SSppeenncceerr SSOOHH,, 44BBOOHH && 44BBOOBB MMuullttiissttaaggeeCCeennttrriiffuuggaall BBlloowweerrss

IImmppoorrttaannttRReeaadd aanndd bbeeccoommee ffaammiilliiaarr wwiitthh tthhiiss mmaannuuaall pprriioorr ttoo iinnssttaalllliinngg yyoouurr SSppeenncceerr bblloowweerr.. FFoolllloowwiinngg tthhee iinnssttrruuccttiioonnss ddeettaaiilleeddhheerree wwiillll hheellpp yyoouu rreeaalliizzee iittss ffuullll ppootteennttiiaall ooff eeffffiicciieenntt sseerrvviiccee aanndd eexxtteennddeedd lliiffeessppaann.. DDaammaaggee rreessuullttiinngg ffrroomm ffaaiilluurree ttoo ffoolllloowwccoorrrreecctt pprroocceedduurree wwiillll vvooiidd tthhee wwaarrrraannttyy..

TThhee SSppeenncceerr TTuurrbbiinnee CCoommppaannyy Windsor, Connecticut 06095 FFoorrmm AAAA1155..44

SSeerriiaall NNoo::

MMooddeell NNoo::

SOH Standard Overhung

4BOB Four-Bearing Outboard

4BOH Four-Bearing Overhung

OOppeerraattiinngg aanndd MMaaiinntteennaannccee MMaannuuaall

CCoonntteennttss PageII IInnttrroodduuccttiioonn

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Product Description . . . . . . . . . . . . . . . . . . . . . . . . . .3

IIII LLiimmiitteedd WWaarrrraannttyy . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

IIIIII SSaaffeettyy PPrreeccaauuttiioonnss && OOppeerraattiinngg GGuuiiddeelliinneess . . . . . . .3IIVV HHaannddlliinngg aanndd SSttoorraaggee

. . . . . . . . . . . . . . . . . . . . . . . . .4Lifting and Moving . . . . . . . . . . . . . . . . . . . . . . . . . . .4Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

VV IInnssttaallllaattiioonn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Blower Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41. Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42. Flexible Connectors . . . . . . . . . . . . . . . . . . . . . . .43. Butterfly Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . .54. Filters, Silencers and Filter Silencers . . . . . . . . . .55. Check Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56. Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57. Coupling Alignment . . . . . . . . . . . . . . . . . . . . . . . .58. Shaft Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79. Motor Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . .7

VVII OOppeerraattiioonn aanndd AAddjjuussttmmeennttss . . . . . . . . . . . . . . . . . . . .7Startup Precautions . . . . . . . . . . . . . . . . . . . . . . . . . .7Blower Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Surge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Normal Operating Limits . . . . . . . . . . . . . . . . . . . . . .8Periodic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . .8Parallel Installation . . . . . . . . . . . . . . . . . . . . . . . . . . .8

VVIIII LLuubbrriiccaattiioonn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Motor Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Blower Bearings, 4BOH & 4BOB . . . . . . . . . . . . . . . .8Flexible Couplings, 4BOH & 4BOB . . . . . . . . . . . . . .9

VVIIIIII MMaaiinntteennaannccee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . .9Equipment Service . . . . . . . . . . . . . . . . . . . . . . . . . . .9Material Safety Data Sheets . . . . . . . . . . . . . . . . . . .9Emergency Service . . . . . . . . . . . . . . . . . . . . . . . . . .9Service and Operating Assistance . . . . . . . . . . . . . . .9SOH Diagram and Recommended Spare Parts . . .10SOH Disassembly/Reassembly Instructions . . . . . .114BOH Diagram and Recommended Spare Parts . .124BOH Disassembly/Reassembly Instructions . . . . .134BOB Diagram and Recommended Spare Parts . . .144BOB Disassembly/Reassembly Instructions . . . . .15

IIXX TTrroouubblleesshhoooottiinngg GGuuiiddee . . . . . . . . . . . . . . . . . . . . . . .16

Insufficient Air or Gas . . . . . . . . . . . . . . . . . . . . . . . .16Machine Noisy . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17Machine Vibrating . . . . . . . . . . . . . . . . . . . . . . . . . . .17Motor Hot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

II.. IInnttrroodduuccttiioonnWelcome as a Spencer customer and owner of a new centrifugalblower. Your blower incorporates exclusive Spencer engineeringtechnology, based on more than a century of leadership in blowerdesign and manufacture.This manual contains the information you need for handling,installing, operating and maintaining your new equipment correctly,to ensure trouble-free operation and long service life. Pleaseread it thoroughly. Illustrations and instructions contained hereapply to three series of blowers; Standard Overhung (SOH),Four Bearing Overhung (4BOH) and Four Bearing Outboard(4BOB). If you need assistance in determining which model youhave, please consult your Spencer Representative.Your Spencer Representative will also answer any questions youmay have about the procedures or recommendations presentedin this manual. The Spencer Service and Engineering Departmentscan provide assistance as well.

Be sure the machine model number and serial number are cor-rectly recorded in the boxes on the front cover of this manual.These numbers may be found on the nameplate (see samplesbelow) located on the machine housing.Having this information easily accessible will expedite partsorders and other communication with the factory. To serve yourmaintenance and repair needs promptly, Spencer maintains alarge inventory of parts for all blower models.

22

PPrroodduucctt DDeessccrriippttiioonnThese Spencer blowers are multistage centrifugal units whichhandle air and other gases, working either as blowers orexhausters. They increase the pressure of the incoming air orgas by guiding it from one stage to the next through diffusers.They are centrifugal because the flow through the blower isturned perpendicular to the axis of rotation.

The most prevalent Spencer blower configuration is the stan-dard overhung type which has all the impellers mounted directlyon an extended motor shaft.

The four-bearing overhung blower uses a standard shaft motorand an overhung impeller design. The rotating blower assemblyis supported by a rigid ball bearing bracket and shaft, which isconnected to the motor via a flexible coupling.In four-bearing outboard blowers, the impellers are mounted ona shaft supported between two outboard bearings and driven bya standard shaft motor through a flexible coupling.

IIII.. LLiimmiitteedd WWaarrrraannttyyWe warrant that this product will be free from defects in materialand workmanship for a period of 18 months from date of ship-ment or 12 months from date of startup, whichever comes first.Within the warranty period, we shall repair or replace, F.O.B.our Factory, such products that are determined by us to bedefective.

This warranty will not apply to any product which has been sub-jected to misuse, negligence or accident, or misapplied orimproperly installed. This warranty will not apply to any productwhich has been disassembled, repaired or otherwise altered byany persons not authorized by the Spencer Service Department. The guarantees of the motor, control and component manufac-turers govern the extent of our guarantee on such equipment.Warranty work on motors, controls and components must beauthorized by Spencer and must be performed in an authorizedshop as designated by the motor, control and component man-ufacturers. The Spencer Turbine Company reserves the right toinvoice all expenses incurred when repairs are made in the fieldat the specific request of a customer. For complete warrantyinformation, refer to Form 706, Spencer's Terms and Conditionsof Sales.

IIllll.. SSaaffeettyy PPrreeccaauuttiioonnssaanndd OOppeerraattiinnggGGuuiiddeelliinneess

Read and follow all instructions in this manual. If you haveany questions, consult your Spencer Representative.

Use appropriately rated lifting equipment for installation,removal or disassembly of heavy components.

Remove inlet and discharge covers, silica gel bags and crat-ing materials prior to blower installation.

Inspect all openings for tools and foreign matter before con-necting accessories or piping.

Perform all installing and operating procedures with care,following sound practices to avoid accidents and damage.

Avoid climbing on or over the blower; use proper staging andladders for exterior machine access.

Be sure isolation pads are placed beneath the blower. Seepage 4.

Install flexible connectors on inlet and discharge flanges toisolate piping loads from the blower.

Ensure that piping, machine guards and accessories such asfilters or valves are properly installed and fastened.

Install a filter on the inlet when the blower is used in pressureservice and keep it clean.

Allow only qualified electricians to work on electrical equipment.

Lock electrical circuits open and tag them during servicing ofequipment.

Align the coupling as instructed on page 5 (4BOH and 4BOBblowers only). Then remove alignment tools and replacecoupling guard before restarting blower.

Turn the blower shaft by hand to verify free rotation withoutrubbing or noise.

Check motor rotation as instructed on page 7. Do not operate the blower where there is an ambient temper-

ature above 104F (40C), unless it has been designed forsuch conditions.

Operate blower with sufficient restriction at all times (via con-nected piping system or throttled butterfly valve) to avoidmotor overloading.

Do not allow blower operation in surge (unstable low flow) ordamage may result.

Rotate shaft of stored or inactive blowers a few times byhand every week.

Use only genuine Spencer parts for repairs and service.

33

Standard Overhung Design

44

IIVV.. HHaannddlliinngg aannddSSttoorraaggee

Each Spencer blower is carefully balanced and tested at thefactory. For optimum performance, it must be handled with careduring unloading and installation.Check the shipment for damage upon arrival; file any claimswith the shipper and notify Spencer.

LLiiffttiinngg aanndd MMoovviinnggMoving of this equipment is the customers responsibility andshould be performed or directed by experienced riggers usingaccepted rigging practices and safety precautions. The blower/motor assembly can be lifted and relocated with a forklift, over-head crane or hoist. Always use lifting equipment rated for theloads involved.

CCAAUUTTIIOONN:: DDoo nnoott ll ii ff tt tthhee bblloowweerr bbyy ii ttss sshhaafftt oorr bbeeaarriinngghhoouuss iinngg;; uussee tthhee ffuurrnn iisshheedd ll ii ff tt iinngg eeyyeess oorr sslloottss iinn tthheebblloowweerr bbaassee..

SSttoorraaggeeIf a blower is stored for an extended period before use orbetween uses, protect it from dampness, dirt and vibration.Suspend bags of silica gel desiccant in the inlet and discharge.Cover the entire blower if possible or at least cover the inlet anddischarge openings to keep out foreign matter. Rotate the blow-er shaft a few times by hand every week, keeping a log.CCAAUUTTIIOONN:: FFaaii lluurree ttoo ccoommppllyy wwii tthh tthhee rreeqquuiirreedd ss ttoorraaggeepprroovviissiioonnss,, iinncclluuddiinngg wweeeekkllyy sshhaafftt rroottaattiioonnss,, wwii llll vvooiidd tthheewwaarrrraannttyy..

UUnnppaacckkiinngg1. Uncrate the blower, saving all literature, boxes and parts. 2. Remove inlet and discharge protective caps and all packing

materials.

3. Use the packing slip to check off and confirm the presenceof all ordered components.

4. Read any instructional and warning labels on the machinebefore installation and operation.

VV.. IInnssttaallllaattiioonnNOTE: If any problems are encountered during installation orstartup, consult your local Spencer Representative.

LLooccaattiioonnCCAAUUTTIIOONN:: DDoo nnoott llooccaattee bblloowweerr oorr ccoonnttrroollss wwhheerree tthheeyy wwiillllbbee ssuubbjjeecctt ttoo aammbbiieenntt tteemmppeerraattuurreess aabboovvee 110044FF ((4400CC))dduurr iinngg ooppeerraatt iioonn,, uunnlleessss ssppeecciiaall llyy eeqquuiippppeedd ffoorr hhiigghheerrtteemmppeerraattuurreess..

Spencer blowers may be installed outdoors, preferably undercover, or indoors. When choosing an indoor location, be surethere is sufficient ventilation to allow unrestricted airflow to theblower. In addition, it is advisable to leave several feet of spacearound the blower and motor for ease of servicing. Inaccessibilitycan prove costly.

Consideration should be given to the noise generated by thisequipment and its contribution to the ambient noise level.Optional noise reduction accessories include blower housingsound attenuation jackets, filter silencers or silencers for theblower inlet and/or discharge, and silencers for the motor.NOTE: Duct noise attenuation is a customer responsibility.

FFoouunnddaattiioonnA level concrete pad is recommended, although any flat levelsurface that can support the machine weight is satisfactory. Theblower base should be placed level on the furnished isolationpads or equivalent. Each pad must be shimmed, if necessary,to ensure that it is carrying its share of the load. If lag bolts andnuts are used to restrain the blower, hand-tighten only.NOTE: Spencer does not recommend grouting of machines.

BBlloowweerr SSeettuuppCCAAUUTTIIOONN:: MMaakkee ssuurree bblloowweerr iinnlleett aanndd ddiisscchhaarrggee ppoorrttss aarreeuunnoobbssttrruucctteedd bbeeffoorree ccoonnnneeccttiinngg ppiippiinngg ttoo bblloowweerr..

11.. PPiippiinnggAll piping connected to the blower should be of ample size tominimize frictional loss. All system joints must be airtight; leakypipes waste air and power.

All piping must be properly aligned and supported to avoidstress on the blower and restrained to prevent movement awayfrom the blower caused by air pressure. Flexible connectorsmust be used to connect piping to the blower.NOTE: The diagram above shows the proper orientation of apiping elbow in-line with the blower shaft. The butterfly valveshould have its shaft at right angles to the blower shaft and thevalve should open as indicated (counterclockwise in this exam-ple). These steps will assure uniform loading of the blowersfirst stage.

11"" IIssoollaattiioonn PPaadd(shim if necessary)

IInnlleett

DDiisscchhaarrggee

CChheecckkVVaallvvee

FFlleexxiibblleeCCoonnnneeccttoorrss

BBuutttteerrffllyyVVaallvvee

55

22.. FFlleexxiibbllee CCoonnnneeccttoorrssCCAAUUTTIIOONN:: CCoonnnneecctteedd ppiippiinngg mmuusstt nnoott ttoouucchh tthhee bblloowweerr..UUssee fflleexxiibbllee ccoonnnneeccttoorrss ((eexxppaannssiioonn jjooiinnttss oorr rruubbbbeerr sslleeeevveess))oonn bbootthh tthhee iinnlleett aanndd ddiisscchhaarrggee ttoo ccrreeaattee aann iissoollaattiinngg ggaappbbeettwweeeenn bblloowweerr aanndd ppiippiinngg..

33.. BBuutttteerrffllyy VVaallvveeTo regulate (throttle) blower volume and/or pressure, a butterflyvalve may be installedpreferably on the inlet. A valve mayalso be installed on the discharge as an isolation valve.

44.. FFiilltteerrss,, SSiilleenncceerrss aanndd FFiilltteerr SSiilleenncceerrssSpencer blowers will accept a filter or filter silencer, typically onthe inlet, and a silencer, typically on the discharge. Inlet filtrationis recommended for pressure applications.

55.. CChheecckk VVaallvveeCCAAUUTTIIOONN:: AA cchheecckk vvaallvvee mmuusstt bbee iinnssttaalllleedd iinn tthhee ddiisscchhaarrggeelliinnee ((ddoowwnnssttrreeaamm ooff aannyy bbllooww--ooffff lliinnee)) ooff eeaacchh bblloowweerr ooppeerr--aattiinngg iinn ppaarraalllleell,, oorr iinn tthhee iinnlleett lliinnee ((uuppssttrreeaamm ooff aannyy bblleeeeddll iinnee)) ooff eeaacchh vvaaccuuuumm pprroodduucceerr ooppeerraattiinngg iinn ppaarraall lleell ttoopprreevveenntt rreevveerrssee ffllooww tthhrroouugghh iiddllee uunniittss..Orient the check valve during installation to equalize loading onthe valve shutters. Usually, the hinge post of the check valveshould be installed perpendicular to the blower shaft. If thecheck valve is installed in a horizontal piping line, position thevalve shaft vertically. Make sure the internal moving parts canmove freely.

66.. EElleeccttrriiccaallNOTE: All wiring and electrical adjustments or installations mustbe done by a qualified electrician in accordance with theNational Electrical Code and local codes.CCAAUUTTIIOONN:: TThhee eelleeccttrr iiccaall sseerrvv iiccee aatt tthhee iinnssttaall llaatt iioonn ssii tteemmuusstt ssuuppppllyy tthhee vvoollttaaggee ssttaammppeedd oonn tthhee mmoottoorr nnaammeeppllaattee..OOppeerraattiioonn aatt aann iinnccoorrrreecctt vvoollttaaggee mmaayy ddaammaaggee tthhee mmoottoorraanndd vvooiidd iittss wwaarrrraannttyy..

In making electrical connections, follow the wiring instructionsfurnished. Wire and fuses should be of ample capacity toensure that proper voltage is maintained at the motor terminalswhile starting and running. It is important that proper startingequipment is used. The starters should have thermal overloadprotection as well as true low-voltage protection.EElleeccttrriiccaall AAcccceessssoorriieess.. The following optional safety acces-sories are available from Spencer. For copies of the productbulletins listed, contact your Spencer Representative orwww.spencerturbine.com.

Load Control Safety Switch (LCSS)Bult. No. TDS-223 Electronic Modulating Bleed Control (EMBC) Bult. No.

TDS-224 Bearing Temperature Monitor Control (BTMC) Bult. No.

TDS-222 Standard Blower Safety Control Panels (LCSS, BTMC and

VM, Vibration Monitor)Bult. No. TDS-237 and TDS-236NOTE: Use of a BTMC, vibration monitor and an LCSS orEMBC may be advisable in crucial or unattended applications,anywhere there are wide load fluctuations or where machinesare operating at high pressure or vacuum.

Both the LCSS and EMBC are designed to prevent a blower orvacuum producer from operating in a low load (surge) condition.77.. CCoouupplliinngg AAlliiggnnmmeenntt,, 44BBOOHH && 44BBOOBBThe coupling on this machine was carefully aligned at the factoryand the coupling halves and shell(s) marked to indicate opti-mum relative position. However, transportation may havecaused coupling misalignment.CCAAUUTTIIOONN:: CChheecckk tthhee mmoottoorr aanndd bblloowweerr sshhaaffttss ffoorr mmiissaalliiggnn--mmeenntt aanndd ccaarreeffuullllyy rreeaalliiggnn tthheemm iiff nneecceessssaarryy aafftteerr iinnssttaall llaa--tt ii oonn aanndd bbeeff oorree ss ttaarr tt uupp ,, aass mmiissaall iiggnnmmeenn tt ccaann ccaauusseeddeesstt rruucctt ii vvee vv iibbrraatt iioonn.. CCoouuppll iinngg aall iiggnnmmeenn tt sshhoouulldd bbeerreecchheecckkeedd aaggaaiinn aafftteerr aann hhoouurr ss ooppeerraattiioonn.. FFiinnaall aalliiggnnmmeennttsshhoouulldd bbee mmaaddee aatt aavveerraaggee ooppeerraattiinngg tteemmppeerraattuurree.. AAfftteerreeaacchh aalliiggnnmmeenntt cchheecckk,, aadddd lluubbrriiccaanntt ppeerr iinnssttrruuccttiioonnss aannddrreeppllaaccee ccoouupplliinngg gguuaarrdd..WWAARRNNIINNGG:: DDIISSCCOONNNNEECCTT AANNDD LLOOCCKK OOUUTT EELLEECCTTRRIICCAALLPPOOWWEERR BBEEFFOORREE PPEERRFFOORRMMIINNGG AALLIIGGNNMMEENNTT..

On certain blowers, the coupling is disassembled after factoryalignment and marking. The coupling halves are specially pro-tected against the elements during shipping. Prior to startup,assemble the coupling, align keyways using factory markingsand lubricate as instructed.

Coupling alignment lines up the motor shaft and blower shaft inhorizontal and vertical planes. It also ensures an adequateclearance (gap) between the two coupling halves. Only quali-fied personnel should attempt to align a coupling. If problemsarise, contact Spencer or your Spencer Representative.SSiieerr BBaatthh GGeeaarr--TTyyppee CCoouuppll iinnggss,, manufactured to our rigidspecifications, are most commonly supplied with Spencerequipment.

SSiieerr BBaatthh HHuubb ttoo HHuubbCCoouupplliinngg SSiizzee,, iinn.. GGaapp,, iinn..

7/8 1/81-1/2 1/82 1/82-1/2 1/43 1/43-1/2 1/44 1/44-1/2 1/45 1/4

Remove one snap ring and slide the sleeve off the hub halves.Using a feeler gage, verify that the gap between the couplinghalves agrees with this table.CCAAUUTTIIOONN:: SSoommee mmoottoorr sshhaaffttss aarree sspprriinngg--llooaaddeedd aaxxiiaallllyy.. BBeeccaarreeffuull wwhheenn uussiinngg tthhee ffeeeelleerr ggaaggee ttoo aavvooiidd ccoommpprreessssiinnggtthhee sshhaafftt aanndd ddiissttuurrbbiinngg tthhee nnoorrmmaall aatt--rreesstt ppoossiittiioonn..MMaacchhiinneerryy SSoofftt FFoooottImperfections or unevenness between the machine base andany foot of the motor or blower creates a condition known assoft foot, which may be parallel or angular. If uncorrected, softfoot leads to increased stress and high vibration. Although boththe motor and blower feet were preset at the factory, each footmust be checked for soft foot prior to alignment. Any vertical orangular soft foot that exceeds .003 is excessive and must becorrected.

66

LLaasseerr AAlliiggnnmmeenntt TTeecchhnniiqquuee ((RReeccoommmmeennddeedd))Laser systems have significant advantages such as reducedmaintenance costs and energy consumption; prolonged life forbearings, seals and couplings; decreased bearing temperaturesand lower vibration levels. Many laser systems also identify andmeasure soft foot conditions.

NOTE: Consult an alignment specialist if laser equipment is notavailable.

RReevveerrssee IInnddiiccaattoorr MMeetthhoodd ((PPeerrmmiissssiibbllee))This method may be done electronically following the instru-ment manufacturers instructions or by means of dial indicatorsas follows:

1. Reinstall the coupling sleeve, seal and snap ring.2. Clamp dial indicators on shafts 180 apart as shown.3. Place indicator probes on opposite shafts as shown.

4. Rotate both shafts simultaneously in the correct operatingdirection, taking readings at 90 intervals.

5. Adjust motor to achieve parallel and angular alignment. Ifquestions arise, contact the Spencer Service Department.

SSttrraaiigghhtteeddggee MMeetthhoodd ((PPeerrmmiissssiibbllee))1. Remove old lubricant and clean the hub teeth.

2. Set a machine shop quality straightedge across the couplinghubs (at the root diameter of the gear teeth).

3. Adjust the motor so the straightedge is evenly supportedbetween the coupling hubs at the 3, 6, 9 and 12 oclockpositions.

4. Using a feeler gage, measure the clearance between thecoupling hubs at the 3, 6, 9 and 12 oclock positions.

5. Adjust the motor so the gap is identical at all four positionsand in accord with the table of hub to hub gaps.

CCoouupplliinngg AAlliiggnnmmeenntt wwiitthh SSlleeeevvee BBeeaarriinngg MMoottoorrss

CCAAUUTTIIOONN:: CCoommpplleettee tthhee ffoo ll lloowwiinngg pprroocceedduurreess bbeeffoorreeaatttteemmppttiinngg ccoouupplliinngg aalliiggnnmmeenntt wwiitthh sslleeeevvee bbeeaarriinngg mmoottoorrss..Use a flange-type gear coupling for both 1800 and 3600 RPMmotors. Do not use a sleeve-type coupling.Sleeve bearing motors have a specified end play. End play limitsand the magnetic center (where motor will run) should bescribed on the shaft by the manufacturer.

Use the following procedure to align a sleeve bearing motorwith a blower.

1. Make sure the motor shaft is level.

2. Position the motor so that when the rotor is pushed towardthe blower as far as it will go, there will 0.030" clearancebetween the ends of the motor and blower shafts (or thealignment faces on the coupling hubs).

3. Proceed with coupling alignment using the appropriateinstructions.

AAlliiggnnmmeenntt TTiippss Make sure the blower is level before alignment. Mark the axial location of the motor before alignment as a

reference point to be sure it does not move.

Avoid disturbing any factory-installed shims unless they areto be replaced.

Do soft foot corrections first; loosen all mounting bolts beforecorrecting any foot.

During the final vertical adjustment of the motor, work onone side at a time, loosening the jack bolts first so the motordoes not move laterally as mounting bolts are loosened.

Use the smallest shim that will slide over the mounting bolts. Minimize the number of shims. One thick shim and 2-3 thin

shims are usually satisfactory.

Remove all traces of dirt or contaminants from shims andmachine parts.

Use stainless steel shims only.

Never reuse shims.

CCAAUUTTIIOONN:: AAfftteerr eeaacchh aalliiggnnmmeenntt cchheecckk,, aadddd ccoouupplliinngg lluubbrrii--ccaanntt iiff rreeqquuiirreedd..WWAARRNNIINNGG:: RREEPPLLAACCEE TTHHEE CCOOUUPPLLIINNGG GGUUAARRDD BBEEFFOORREERREESSTTAARRTTIINNGG TTHHEE BBLLOOWWEERR..

Blower Shaft Motor Shaft

Blower Shaft Motor Shaft

Straightedge

StraightedgeFeeler Gage

MotorShaft

77

88.. SShhaafftt SSeeaallss ((44BBOOBB BBlloowweerrss && GGaassBBoooosstteerrss))

Shaft seals at both the inlet and discharge ends minimize leakageof gas into or out of the blower. Packing boxes are standard for4BOB blowers. Packing boxes, carbon ring seals and mechanicalseals may be used on gas boosters. Consult Spencer Form DDor applicable manufacturers instructions.

99.. MMoottoorr RRoottaattiioonnThe motor must be wired correctly to rotate the blower in theright direction. A rotation arrow is located on the blower housing.Bump or jog the start button and observe the direction of rotation

of the motor shaft. This movement must agree with the rotationarrow. If the rotation is incorrect, the motor wiring must bechanged.This diagram shows the available discharge positions, viewedfrom the intake end, and the direction of blower rotation associatedwith each discharge position.

VVII.. OOppeerraattiioonn aannddAAddjjuussttmmeennttss

SSttaarrttuupp PPrreeccaauuttiioonnssBefore operating a new blower for the first time, review itsinstallation and setup to be sure that no steps have been over-looked.

11.. IInnssttaallllaattiioonn CChheecckk LLiisstt Is there any damage from transportation or installation? Is the machine level?

Have all packing, shipping materials and tools been removed? Is the inlet filter in place?

Are isolation pads in place?

Is the piping connected and supported? Are flexible connectors in place between blower and piping? Are safety guards in place?

22.. AAddjjuussttmmeenntt CChheecckkss Is the coupling aligned within tolerances and lubricated?

(4BOB & 4BOH blowers only)33.. OOppeerraattiioonnaall CChheecckkss Is the throttling valve closed or properly positioned? Do the blower shaft and driver spin freely?

Is the isolation valve (if any) open? Is the system ready for air or gas delivery? Has motor rotation been checked?

Are motor and electrical accessories properly wired?

Is the control panel energized? Have maintenance and operations personnel been notified?CCAAUUTTIIOONN:: TThhiiss bblloowweerr mmuusstt hhaavvee aaddeeqquuaattee ssyysstteemm rreessiiss--ttaannccee aatt aallll ttiimmeess ttoo aavvooiidd ooppeerraattiioonn aatt oorr nneeaarr ffrreeee ddeelliivveerryy((wwiiddee ooppeenn)).. IItt iiss ttyyppiiccaall llyy iimmppoosseedd bbyy tthhee pprroocceessss aannddssuupppplleemmeenntteedd wwiitthh aa tthhrroottttlliinngg vvaallvvee.. RRuunnnniinngg tthhee bblloowweerroovveerrllooaaddeedd wwiillll ddaammaaggee tthhee mmoottoorr..

BBlloowweerr SSttaarrttuuppWith the system connected and the throttling valve closed, turnthe blower on. Quickly assess the current draw of the motor.Adjust the system load or throttling valve until the desired flowis reached, being careful not to operate in surge or to exceedthe full-rated motor capacity. Initially, blowers will temporarilydevelop more differential pressure and take more power. Checkfinal settings after operating temperature is achieved, typicallyafter one-half hour. If the throttling valve is not fully open whenthe motor capacity has been reached, it should be fixed at thispoint to prevent further opening and possible overloading of themotor.

Packing Box Carbon Ring

Mechanical Seal

88

SSuurrggeeCCAAUUTTIIOONN:: DDoo nnoott ooppeerraattee bblloowweerr iinn ssuurrggee ((uunnssttaabbllee lloowwffllooww rraannggee)).. DDaammaaggee ttoo bblloowweerr ccaauusseedd bbyy ooppeerraattiinngg iinnssuurrggee iiss nnoott ccoovveerreedd bbyy SSppeenncceerr wwaarrrraannttyy..A blower in surge produces a rush or pulsating rhythmic airsound caused when airflow into or out of the blower is restricted.In addition to its characteristic noise, surge may be detected bypower or pressure fluctuations. Surge is destructive because itis accompanied by excessive temperatures and aerodynamicforces that will ultimately cause mechanical failure. A surge condi-tion is simply eliminated by increasing the airflow either into thesystem or to a bypass or vent. Various surge control devicesare also available from Spencersee page 5.NOTE: If a blower surges violently at startup, avoid recurrencesby leaving the throttling valve open at or near its normal operatingposition.

NNoorrmmaall OOppeerraattiinngg LLiimmiittssNOTE: Use of a Spencer bearing temperature monitor andvibration monitor is recommended to alert personnel to bloweroperation outside the following limits. Vibration should not exceed 1.5 mils @ 3500 rpm, 1.8 mils @

2900 rpm or 3.0 mils @ 1750 rpm at each bearing housing.All of these speeds have a velocity limit of 0.275 in/sec.

Follow the motor manufacturers recommendations for maxi-mum motor bearing and winding temperatures.

Blower bearing temperatures should not exceed the followingvalues at the bearing housing surface.

SSeerriieess IInnlleett EEnndd DDiisscchhaarrggee EEnnddFF ((CC)) FF ((CC))

4BOH 150 (66) 150 (66)4BOB 165 (74) 150 (66)

If abnormal operation is detected, shut the blower down andrefer to the Troubleshooting Guide in the back of this manual orcontact Spencer.

PPeerriiooddiicc OOppeerraattiioonnCCAAUUTTIIOONN:: AAllll bblloowweerrss sshhoouulldd bbee ooppeerraatteedd ppeerriiooddiiccaallllyy..In multiple blower installations, periodically rotate each blowerfrom standby to operating status.

PPaarraalllleell IInnssttaallllaattiioonnCCAAUUTTIIOONN:: AA cchheecckk vvaallvvee mmuusstt bbee iinnssttaalllleedd iinn tthhee ddiisscchhaarrggeelliinnee ooff eeaacchh bblloowweerr oorr iinnlleett ooff eeaacchh vvaaccuuuumm pprroodduucceerr ooppeerr--aattiinngg iinn ppaarraalllleell ttoo pprreevveenntt rreevveerrssee ffllooww tthhrroouugghh iiddllee uunniittss..CCAAUUTTIIOONN:: DDoo nnoott ooppeerraattee cceennttrrii ffuuggaall bblloowweerrss iinn ppaarraall lleellwwiitthh ppoossiitt iivvee ddiissppllaacceemmeenntt bblloowweerrss.. SSuucchh ooppeerraattiioonn mmaayyddaammaaggee tthhee cceennttrriiffuuggaall bblloowweerrss aanndd wwiillll vvooiidd tthhee wwaarrrraannttyy..When operating two or more blowers in parallel (typically identicalblowers), each must carry its share of the load. The currentreadings of all motors should be approximately the same. Itmay be necessary to adjust the individual throttling valve stopsto attain similar readings.

VVIIII.. LLuubbrriiccaattiioonnWWAARRNNIINNGG:: DDIISSCCOONNNNEECCTT AANNDD LLOOCCKK OOUUTT EELLEECCTTRRIICCAALLPPOOWWEERR BBEEFFOORREE PPEERRFFOORRMMIINNGG LLUUBBRRIICCAATTIIOONN..

MMoottoorr BBeeaarriinnggssFollow the motor manufacturers recommendations. Somemotors are equipped with sealed bearings not intended forrelubrication; these motors have no grease or drain plugs.

BBlloowweerr BBeeaarriinnggss ((44BBOOHH && 44BBOOBB))4BOH and 4BOB blowers are equipped with deep-groove ballbearings designed to carry the thrust and radial loads. Thesebearings are packed at the factory with sufficient grease for1500 to 8000 hours of continuous operation prior to relubrication.Lubrication prior to blower operation is not recommended andshould not be attempted.If, however, the blower has been stored for three months or longer,remove the bearing caps and check for moisture or hard grease.Discard any hard or dry grease and relubricate if necessary.An average lubrication interval should be established based onexisting conditions. Several factors affect the frequency oflubrication:

1. Operating temperature of the bearing2. Indoor or outdoor blower location

3. Clean or dusty conditions4. Ambient temperature

5. Predicted duty cycle

6. Bearing size and speedUnder actual operating conditions, the ideal lubrication intervalof 8000 hours should be adjusted according to the followingtable.

NOTE: The higher limit of each range shown is for small bearings(#308 and smaller); the lower limit is for large sizes. This tableis only a guide. An extremely dirty atmosphere could decreasethe lubrication interval as much as 50%.

OOppeerraattiinngg CCoonnddiittiioonn LLuubbrriiccaattiioonn IInntteerrvvaal

I 1. 120150F bearing temp. 40006000 hours2. Indoor installation3. Clean atmosphere4. 40100F ambient temp.5. Continuous operation

II Same conditions as I except 60008000 hoursintermittent operation

Ill 1. 120155F bearing temp. 30005000 hours2. Outdoor installation3. All atmospheres4. 0104F ambient temp. 5. Continuous operation

IV Same conditions as Ill except 50007000 hoursintermittent operation

99

LLuubbrriiccaattiioonn PPrroocceedduurreeCCAAUUTTIIOONN:: KKeeeepp tthhee ggrreeaassee cclleeaann aanndd mmaaiinnttaaiinn cclleeaannlliinneessssttoo aavvooiidd bbeeaarriinngg ccoonnttaammiinnaattiioonn aanndd ddaammaaggee..NOTE: More bearing failures are caused by overgreasing thanlack of lubricant. Always add grease sparingly.CCAAUUTTIIOONN:: UUssee CChheevvrroonn SSRRII ##22 ggrreeaassee.. IInntteerrmmiixxiinngg iinnccoommppaatt--iibbllee ggrreeaasseess oorr uussiinngg aannyy ootthheerr ttyyppee mmaayy rreessuulltt iinn bbeeaarriinnggffaaiilluurree wwhhiicchh iiss nnoott ccoovveerreedd uunnddeerr tthhee SSppeenncceerr wwaarrrraannttyy..

CChheevvrroonn SSRRII ##22 GGrreeaassee SSppeecciiffiiccaattiioonnssGrade or consistency...............................................................#2Thickener .......................................................................polyureaASTM Dropping Point ........................................................480FWork Penetration...................................................................270Base Oil Viscosity ..........................................600 SUS @ 100FColor..........................................................................Blue-Green

To lubricate blower bearings, use the following procedure:1. Shut down the machine.2. Remove guards as necessary.3. Inject the recommended grease using a grease gun. The

proper amount of grease will vary with bearing size.4. Reinstall guards and restart blower.LLuubbrr iiccaatt iioonn ooff rreeppllaacceemmeenntt bbeeaarr iinnggss ((44BBOOHH && 44BBOOBB))..Before installing, butter both sides of replacement bearings byforcing grease into each side until it is flush with the race. Foroutboard tandem bearing installation, follow procedures packedwith each new bearing set.

FFlleexxiibbllee CCoouupplliinnggss,, 44BBOOHH && 44BBOOBBGear-type couplings must contain lubricant at all times. Theyare lubricated at the factory with Texaco Code 1912 couplinggrease and should be relubricated with identical or compatiblegrease every six months.Two coupling lubrication ports are located 180 apart. Removethe setscrew lube plugs from both ports. Install a grease fittingin one port and rotate the coupling until the grease fitting isangled upward 45. Pump grease in until clean grease flows outof the opposite port. Remove the grease fitting, wipe off excessgrease, then replace and tighten the lube plugs.CCoouupplliinngg HHaallff RReemmoovvaallGear-type couplings generally require application of heat anduse of a puller to remove.

VVIIIIII.. MMaaiinntteennaanncceeWWAARRNNIINNGG:: DDIISSCCOONNNNEECCTT AANNDD LLOOCCKK OOUUTT EELLEECCTTRRIICCAALLPPOOWWEERR BBEEFFOORREE PPEERRFFOORRMMIINNGG MMAAIINNTTEENNAANNCCEE..

RReeppllaacceemmeenntt PPaarrttssRefer to the appropriate blower diagram in this manual forreplacement part names and numbers. When ordering parts,provide full information about your Spencer equipment. Be surewhen reading nameplates that you obtain the correct informationand record it on the cover of this manual for reference whenordering parts.

Remember, the more complete your information, the quicker yourorder will be processed. Incomplete information will result inunnecessary delays and expense through callbacks. When indoubt, consult the Spencer Parts Department for further infor-mation.

When ordering parts, furnish the following: Serial number and model number. Motor horsepower.

Blower housing diameter. Part nomenclaturerefer to the applicable diagram and

locate the needed item by its number and name.

(When ordering impellers and deflectors) Letter designationfor the specific components, obtained from the diagram.

Form number of this manualAA15.

EEqquuiippmmeenntt SSeerrvviicceeSpencer provides prompt, courteous factory and field servicefor all its machines. To determine the nature of the disorder andthe best way to correct it, service personnel will be dispatchedto your location. We typically request a Purchase Order prior tosending service personnel; however we will proceed on verbalorders in an emergency.Once a full evaluation of the equipment has been performed byour service personnel, you will be advised if the service work iscovered by the Spencer warranty. For out-of-warranty services,please note that we accept Visa and MasterCard charges aswell as other forms of payment.

NOTE: Spencer products returned to the factory must be sentfreight prepaid and accompanied by a Return Service Order(RSO) issued by the Spencer Service Department after wereceive your Purchase Order. Service costs will be quoted afterinspection and the work will be performed upon written accep-tance of the quotation.

MMaatteerriiaall SSaaffeettyy DDaattaa SShheeeettssSpencer is committed to ensuring the safety of its employees. IfSpencer equipment has been exposed to potentially hazardouscontaminants or if Spencer service personnel could be exposedto a potentially hazardous field environment, a Material SafetyData Sheet (MSDS) is required (a) prior to dispatching Spencerservice personnel or (b) before receipt of any equipment forfactory service. If special precautions are necessary to work onthe equipment, contact the Spencer Service Manager.

EEmmeerrggeennccyy SSeerrvviicceeEmergency service calls after normal working hours are routedthrough our voice mail system at 1-800-232-4321 and aSpencer service representative will return your call promptly.

SSeerrvviiccee aanndd OOppeerraattiinngg AAssssiissttaanncceeSpencer Representatives are always available to help cus-tomers achieve maximum equipment performance and reliability.Likewise, Spencer service personnel will provide onsite instructionduring field service calls in the proper procedures to avoid arecurrence of the problem encountered.

1100

NNootteess::1. Although three impellers and two deflectors are shown in

this typical drawing, the number in your machine may varydepending on its design criteria.

2. The impellers are equipped with tapered bushing hubs asillustrated or a split clamped hub.

3. When ordering replacement parts, refer to page 9.

IItteemm NNuummbbeerr NNoommeennccllaattuurree1 Motor2 Division head packing4 Rope packing8 Impellers9 Interstage packing12 End head gasket15 Drive end motor bearing19 Opposite drive end motor bearing

SSccrreeeenneedd iitteemmss aarree rreeccoommmmeennddeedd ssppaarree ppaarrttss

11 MMoottoorr aanndd SShhaafftt AAsssseemmbbllyy22 DDiivviissiioonn HHeeaadd PPaacckkiinngg22AA DDiivviissiioonn HHeeaadd PPaacckkiinngg PPllaattee33 DDiivviissiioonn HHeeaadd ((NNoott aavvaaiillaabbllee aass sseeppaarraattee

IItteemm))44 RRooppee PPaacckkiinngg ffoorr DDeefflleeccttoorr55 EEnndd HHeeaadd BBoollttss66 EEnndd HHeeaadd77 DDeefflleeccttoorr ((AA,, BB,, eettcc..))88 IImmppeelllleerrss ((AA,, BB,, eettcc..))99 IInntteerrssttaaggee DDeefflleeccttoorr PPaacckkiinngg99AA CCeenntteerr DDeefflleeccttoorr PPllaatteess ((nnoorrmmaallllyy nnoott

ffuurrnniisshheedd oonn 3300"" oorr ssmmaalllleerr mmaacchhiinneess))1100 SSpplliitt CCllaammppeedd HHuubb oorr TTaappeerreedd BBuusshhiinngg HHuubb

((PPaarrtt ooff IImmppeelllleerr AAsssseemmbbllyy))1122 EEnndd HHeeaadd GGaasskkeett1133 FFeeeett1144 SSppaacceerrss1155 DDrriivvee EEnndd MMoottoorr BBeeaarriinngg1166 HHoouussiinngg1177 MMoottoorr BBaassee1188 MMoottoorr HHoolldd--DDoowwnn BBoollttss1199 OOppppoossiittee DDrriivvee EEnndd MMoottoorr BBeeaarriinngg

**FFeelltt oonn AAddjjuussttaabbllee DDiisscchhaarrggee TTyyppee

TTyyppiiccaall MMuullttiissttaaggee SSttaannddaarrdd OOvveerrhhuunngg TTyyppee ((SSOOHH))

IInnttaakkee

DDiisscchhaarrggee

**

1111

DDiissaasssseemmbbllyy aanndd RReeaasssseemmbbllyyIInnssttrruuccttiioonnss,, SSOOHHWWAARRNNIINNGG:: DDIISSCCOONNNNEECCTT AANNDD LLOOCCKK OOUUTT EELLEECCTTRRIICCAALLPPOOWWEERR BBEEFFOORREE PPEERRFFOORRMMIINNGG MMAAIINNTTEENNAANNCCEE..CCAAUUTTIIOONN:: PPaarrttss mmuusstt bbee rreeaasssseemmbblleedd iinn eexxaaccttllyy tthhee ssaammeerreellaattiivvee ppoossiittiioonnss.. TThheerreeffoorree,, iitt IIss rreeccoommmmeennddeedd tthhaatt eeaacchhppaarrtt bbee mmaarrkkeedd aass iitt iiss rreemmoovveedd ffrroomm tthhee mmaacchhiinnee ttoo ffaacciillii--ttaattee llaatteerr rreeaasssseemmbbllyy.. IItt iiss eessppeecciiaall llyy iimmppoorrttaanntt tthhaatt tthheellooccaattiioonn ooff eeaacchh iimmppeell lleerr,, aass wweellll aass ii ttss ppoossiitt iioonn oonn tthheesshhaafftt,, bbee mmaarrkkeedd..

When ordering replacement impellers and deflectors, refer tothe Notes on accompanying illustration.DDiissaasssseemmbbllyy

1. Remove End Head Bolts (5) and End Head (6).2. Mark the motor shaft and impeller (8) hub with an arbitrary

12 oclock reference point. Remove the first stage impeller(8A) and mark it for reference during reassembly.

3. Check axial position of each deflector (7) at four radialpoints with reference to end of housing and record for refer-ence when reassembling unit.

4. Remove spacer (14A) holding rope packing (4) in place.Mark spacer for reference during reassembly.

5. Remove rope packing (4) holding deflector in place. Removedeflector (7A). Mark for reference during reassembly.

6. Proceed to remove remaining stages in the same way,marking each component to insure proper reassembly.Note: Division Head (3) cannot be removed.

7. Unbolt division head packing plate (2A) and slide packingplate and packing (2) back on the shaft.

8. Remove motor mounting bolts and slide motor (1) back.RReeaasssseemmbbllyy

1. Place the division head packing plate (2A) and packing (2)on the shaft. If for any reason the packing (2) is damaged,replace it. Install the motor (1) in the housing in its originalposition. Be sure that the shaft is centered in the housing.Assemble the packing (2) and packing plate (2A) to thedivision head.

2. Run the motor (1) to check for vibration. If excessive vibrationis present, check the shaft for runout.

3. Place the first impeller (8C) on the shaft up against the divisionhead (3). Mark the shaft approximately 1/8" out and with-draw the impeller to this point. This will insure a clearanceof 1/8" behind the impeller. Tighten the hub securely.

4. Inspect the interstage packing (9), if applicable, on deflector(7B) and replace if damaged.

5. Place deflector (7B) back tightly against the stops in thecasing. Install the rope packing (4) firmly into the groove,using a suitable tool.

6. Install the next impeller (8B) on the shaft up against thedeflector (7B). Mark the shaft approximately 1/8" out andwithdraw the impeller to this point. Tighten the hub securely.

7. Install the spacer (14B) into the housing. Make sure spacerand deflector (7B) are pressed back tightly and at a uni-form distance from the end of the casing at four points.

8. Proceed in a like manner with remaining impellers, spacersand deflectors.

9. Reassemble the end head (6) to the housing using a newendhead gasket (12).

BBaallaanncciinnggEach machine is fully tested before leaving the Spencer factoryto be sure vibrations, if any, are well within specifications for thisparticular machine. However, rough handling during shipmentor improper disassembly and reassembly of a machine canupset its balance and/or result in excess vibration.If there is any vibration due to an unbalanced condition afterassembly, use the following procedure.After running at operating speed and when at rest, mark posi-tion of end impeller hub on shaft. Loosen bolts or screws holdingimpeller on shaft. Rotate impeller 90 on shaft. Retighten boltsor screws. Run machine again at operating speed and checkvibration. Repeat this process until the best position is locatedfor the impeller on the shaft so that there is no vibration in themachine.

NOTE: In the event of problems following repair procedures,contact the Spencer Service Department or your SpencerRepresentative, describing the nature of the difficulty. Also furnishthe machine serial number.

1122

SSccrreeeenneedd iitteemmss aarree rreeccoommmmeennddeedd ssppaarree ppaarrttss

IItteemm NNuummbbeerr NNoommeennccllaattuurree1 Flexible coupling5 Coupling end bearing5A Blower end bearing6 Division head packing10 Impellers14 Interstage deflector packing16 End head gasket18 Rope packing21 Drive end motor bearing23 Opposite drive end motor bearing

11 FFlleexxiibbllee CCoouupplliinngg22 CCoouupplliinngg GGuuaarrdd33 BBeeaarriinngg BBrraacckkeett LLuubbrriiccaattiioonn FFiittttiinngg44 DDiivviissiioonn HHeeaadd55 CCoouupplliinngg EEnndd BBeeaarriinngg55AA BBlloowweerr EEnndd BBeeaarriinngg66 DDiivviissiioonn HHeeaadd PPaacckkiinngg66AA DDiivviissiioonn HHeeaadd PPaacckkiinngg PPllaattee77 BBeeaarriinngg BBrraacckkeett88 EEnndd HHeeaadd BBoollttss99 DDeefflleeccttoorrss ((AA,, BB,, eettcc..))1100 IImmppeelllleerrss ((AA,, BB,, CC,, eettcc..))1111 EEnndd HHeeaadd AAsssseemmbbllyy1122 IImmppeelllleerr BBoollttss ((oorr SSccrreewwss))1133 SShhaafftt1144 IInntteerrssttaaggee DDeefflleeccttoorr PPaacckkiinngg1144AA CCeenntteerr DDeefflleeccttoorr PPllaatteess ((NNoorrmmaallllyy nnoott

ffuurrnniisshheedd oonn 3300"" oorr ssmmaalllleerr mmaacchhiinneess))1155 SSppaacceerrss1166 EEnndd HHeeaadd GGaasskkeett1177 FFeeeett1188 RRooppee PPaacckkiinngg ffoorr DDeefflleeccttoorr1199 HHoouussiinngg2200 BBaassee ffoorr BBeeaarriinngg aanndd MMoottoorr2211 DDrriivvee EEnndd MMoottoorr BBeeaarriinngg2222 MMoottoorr2233 OOppppoossiittee DDrriivvee EEnndd MMoottoorr BBeeaarriinngg

**NNoott aavvaaiillaabbllee aass aa sseeppaarraattee iitteemm

TTyyppiiccaall FFoouurr--BBeeaarriinngg OOvveerrhhuunngg TTyyppee ((44BBOOHH))DDiisscchhaarrggee

IInnttaakkee

**

NNootteess::1. Although three impellers and two deflectors are shown in this

typical drawing, the number in your machine may varydepending on its design criteria.

2. The impellers are equipped with a split clamped hub asillustrated, tapered bushing hubs or keyed hubs.

3. When ordering replacement parts, refer to page 9.

1133

DDiissaasssseemmbbllyy aanndd RReeaasssseemmbbllyyIInnssttrruuccttiioonnss,, 44BBOOHHWWAARRNNIINNGG:: DDIISSCCOONNNNEECCTT AANNDD LLOOCCKK OOUUTT EELLEECCTTRRIICCAALLPPOOWWEERR BBEEFFOORREE PPEERRFFOORRMMIINNGG MMAAIINNTTEENNAANNCCEE..CCAAUUTTIIOONN:: PPaarrttss mmuusstt bbee rreeaasssseemmbblleedd iinn eexxaaccttllyy tthhee ssaammeerreellaattiivvee ppoossiittiioonn.. TThheerreeffoorree,, iitt iiss rreeccoommmmeennddeedd tthhaatt eeaacchh ppaarrttbbee ttaaggggeedd aass iitt iiss rreemmoovveedd ffrroomm tthhee mmaacchhiinnee ttoo ffaacciilliittaattee llaatteerrrreeaasssseemmbbllyy.. ii tt iiss eessppeecciiaall llyy iimmppoorrttaanntt tthhaatt tthhee llooccaattiioonn ooffeeaacchh iimmppeelllleerr,, aass wweellll aass iittss ppoossiittiioonn oonn tthhee sshhaafftt,, bbee mmaarrkkeedd..

When ordering replacement impellers and deflectors, refer tonotes on accompanying illustrations.DDiissaasssseemmbbllyy

1. Remove End Head Bolts (8) and End Head (11).2. On other than keyed construction, mark the shaft (13) and

impeller (10) hub with an arbitrary 12 oclock reference point.Remove the first stage impeller (10A) and mark it for refer-ence during reassembly. On keyed construction, removesnap ring. Remove impeller (10A) and its hub spacer and anyshims, marking them for replacement in their proper position.

3. Check axial position of each deflector (9) at four radial pointswith reference to end of housing and record for referencewhen reassembling unit.

4. Remove spacer (15) holding rope packing (18) in place.Mark spacer for reference during reassembly.

5. Remove rope packing (18) holding deflector in place.Remove deflector (9). Mark for reference during reassembly.

6. Proceed to remove remaining stages in the same way,marking each component to insure proper reassembly.

Note: Division Head (4) cannot be removed.7. Rotate the blower shaft (13) so that the keyway is in the 12

oclock position. Mark the motor shaft and coupling hub toshow the corresponding 12 oclock position. Remove snapring on blower side of coupling (1) and slide coupling sleeveback.

8. Remove motor mounting bolts and slide motor (23) back.Identify and secure individual motor shim packs under eachmotor foot for reassembly.

9. Unbolt division head packing plate (6A) and slide packingplate and packing (6) back on the shaft.

10. Mark the blower end and coupling ends of the bracket (7) forreference. Remove bearing bracket hold-down bolts andslide bracket/shaft assembly out of the housing.

11. Using heat and a puller, remove the coupling hub from theshaft.

12. Unbolt the bearing caps and remove. These caps are NOTidentical so label the coupling end and blower end capsclearly. Remove the bearings (5 & 5A) from the shaft.Remove the shaft from the bracket.

RReeaasssseemmbbllyy

1. Assemble the shaft (13) in the bracket with new bearings (5& 5A) and grease. Assemble the caps, being careful to placethe correct cap on each end.

2. Using heat, assemble the coupling hub on the shaft (13).3. Place the division head packing plate (6A) and packing (6)

on the shaft. If for any reason the packing (6) is damaged,

replace it. Install the bracket/shaft assembly into the housingin its original position. Be sure that the shaft is centered inthe housing. Assemble the packing (6) and packing plate(6A) to the division head.

4. Move the motor (23) back into its original position. Insure anadequate gap between the coupling hubs. Align the motor(23) to the blower shaft (13) following the instructions onpage 5 of this manual.

5. Rotate the blower shaft to the 12 oclock position and alignthe corresponding mark on the motor coupling hub. Recouplethe motor (23) to the shaft (13) and run the assembly tocheck for vibration. If excessive vibration is present, checkthe shaft (13) for runout.

6. On keyed construction, the impellers (10), spacers andshims are reassembled in precise reverse order of their dis-assembly. Verify clearance at each stage. On other thankeyed construction, place the first impeller (10C) on the shaftup against the division head (4). Mark the shaft (13) approxi-mately 1/8 behind the impeller and withdraw the impeller tothis point. This will insure a clearance of 1/8 behind theimpeller. Tighten the hub securely.

7. Inspect the interstage packing (14A), if applicable, ondeflector (9B) and replace if damaged.

8. Place deflector (9B) back tightly against the stops in thecasing. Install the rope packing (18) firmly into the groove,using a suitable tool.

9. Install the next impeller (10B) on the shaft up against thedeflector (9B). Mark the shaft approximately 1/8 out andwithdraw the impeller to this point. Tighten the hub securely.

10. Install the spacer (15) into the housing. Make sure spacerand deflector (9B) are pressed back tightly and at a uniformdistance from the end of the housing at four points.

11. Proceed in a like manner with remaining impellers, spacersand deflectors.

12. Reassemble the end head (11) to the housing using a newend head gasket (16).

BBaallaanncciinnggEach machine is fully tested before leaving the Spencer factoryto be sure vibrations, if any, are well within specifications for thatparticular machine. However, rough handling during shipment orimproper disassembly and reassembly of a machine can upset itsbalance and/or result in excess vibration.If there is any excessive vibration due to an unbalanced conditionafter assembly, use the following procedure:1. Check coupling for misalignment. If realignment does not

correct the vibration, change the relative position of machineshaft and motor shaft in increments of 90 until the smoothestposition is found.

2. If vibration persists, shut the blower down. Mark the positionof end impeller hub on the shaft. Loosen bolts or screwssecuring the impeller. Rotate impeller 90 on shaft. Retightenimpeller. Run machine again at operating speed, and checkfor vibration. Repeat this process until the best position islocated for impeller on shaft so that there is no vibration inthe machine.

NOTE: In the event of problems following repair procedures,contact the Spencer Service Department or your SpencerRepresentative, describing the nature of the difficulty. Also furnishthe machine serial number.

DDiisscchhaarrggee IInnttaakkee

NNootteess::1. Although eight impellers and seven deflectors are shown in

this typical drawing, the number in your machine may varydepending on its design criteria.

2. The impellers are equipped with keyed hubs as illustratedor split clamped hubs shown below.

3. When ordering replacement parts, refer to page 9.

SSccrreeeenneedd iitteemmss aarree rreeccoommmmeennddeedd ssppaarree ppaarrttss

11 MMoottoorr22 DDrriivvee EEnndd MMoottoorr BBeeaarriinngg33 FFlleexxiibbllee CCoouupplliinngg44 CCoouupplliinngg GGuuaarrdd66 IInnbbooaarrdd BBeeaarriinngg LLuubbrriiccaattiioonn FFiittttiinngg77 DDiivviissiioonn HHeeaadd88 IInnbbooaarrdd BBeeaarriinngg CCaapp FFrroonntt88AA IInnbbooaarrdd BBeeaarriinngg CCaapp RReeaarr99 HHeeaatt FFaann GGuuaarrdd1100 RRooppee PPaacckkiinngg ffoorr DDeefflleeccttoorrss1111 DDeefflleeccttoorrss ((AA,, BB,, CC,, eettcc..))1122 EEnndd HHeeaadd BBoollttss1133 IInnttaakkee SSppiirraall1133AA GGrreeaassee DDrraaiinn1144 EEnndd HHeeaadd AAsssseemmbbllyy1155 OOuuttbbooaarrdd BBeeaarriinngg NNuutt aanndd WWaasshheerr1166 OOuuttbbooaarrdd BBeeaarriinngg LLuubbrriiccaattiioonn

FFiittttiinngg

2255AA CCeenntteerr DDeefflleeccttoorr PPllaatteess2266 HHaallff DDeefflleeccttoorr2277 SSppaacceerrss2288 FFeeeett2299 IImmppeelllleerrss ((AA,, BB,, CC,, eettcc..)) 3311 HHeeaatt FFaann3322 DDiivviissiioonn HHeeaadd PPaacckkiinngg3322AA DDiivviissiioonn HHeeaadd PPaacckkiinngg PPllaattee3333 IInnbbooaarrdd BBeeaarriinngg BBrraacckkeett3344 IInnbbooaarrdd BBeeaarriinngg3355 IInnbbooaarrdd SShhaafftt LLoocckkiinngg NNuutt aanndd

WWaasshheerr3366 CCoommmmoonn BBaassee3377 OOppppoossiittee DDrriivvee EEnndd MMoottoorr

BBeeaarriinngg

**NNoott aavvaaiillaabbllee aass aa sseeppaarraattee iitteemm

1144

Itteemm NNuummbbeerr NNoommeennccllaattuurree2 Drive end motor bearing3 Flexible coupling10 Rope packing18 Thrust washer18A Outboard bearing(s)20 End head packing22 End head gasket25 Interstage deflector packing29 Impellers32 Division head packing34 Inboard bearing37 Opposite drive end motor bearing

Metallic packing (if equipped with packing box, see page 7)

Alternate internal construction of a four bearingoutboard blower with split clamped hubs.

TTyyppiiccaall FFoouurr--BBeeaarriinngg OOuuttbbooaarrdd TTyyppee ((44BBOOBB))

1177 OOuuttbbooaarrdd BBeeaarriinngg CCaapp1177AA OOuuttbbooaarrdd BBeeaarriinngg HHoouussiinngg1188 TThhrruusstt WWaasshheerr ((wwhheerree aapppplliiccaabbllee)) 1188AA OOuuttbbooaarrdd BBeeaarriinngg((ss)) 1199 OOuuttbbooaarrdd BBeeaarriinngg BBrraacckkeett1199AA HHoouussiinngg LLoocckkiinngg BBoolltt aanndd NNuutt2200 EEnndd HHeeaadd PPaacckkiinngg ((wwhheerree

aapppplliiccaabbllee)) 2200AA EEnndd HHeeaadd PPaacckkiinngg PPllaattee2211 BBrraacckkeett BBoollttss2222 EEnndd HHeeaadd GGaasskkeett2233 HHoouussiinngg2244 SShhaafftt aanndd KKeeyyss2244AA IImmppeelllleerr AAsssseemmbbllyy LLoocckk NNuuttss ((22))

aanndd WWaasshheerr ((11)) 2244BB SShhaafftt SSlleeeevveess ((TTwwoo;; oonnee kkeeyyeedd)) 2255 IInntteerrssttaaggee DDeefflleeccttoorr PPaacckkiinngg

**

DDiissaasssseemmbbllyy aanndd RReeaasssseemmbbllyyIInnssttrruuccttiioonnss,, 44BBOOBBWWAARRNNIINNGG:: DDIISSCCOONNNNEECCTT AANNDD LLOOCCKK OOUUTT EELLEECCTTRRIICCAALLPPOOWWEERR BBEEFFOORREE PPEERRFFOORRMMIINNGG MMAAIINNTTEENNAANNCCEE..CCAAUUTTIIOONN:: PPaarrttss mmuusstt bbee rreeaasssseemmbblleedd iinn eexxaaccttllyy tthhee ssaammeerreellaattiivvee ppoossiittiioonnss.. TThheerreeffoorree,, iitt iiss rreeccoommmmeennddeedd tthhaatt eeaacchhppaarrtt bbee mmaarrkkeedd aass iitt iiss rreemmoovveedd ffrroomm tthhee mmaacchhiinnee ttoo ffaacciillii--ttaattee llaatteerr rreeaasssseemmbbllyy.. ii tt iiss eessppeecciiaall llyy iimmppoorrttaanntt tthhaatt tthheellooccaattiioonn ooff eeaacchh iimmppeelllleerr,, aass wweellll aass ii ttss ppoossiitt iioonn oonn tthheesshhaafftt,, bbee mmaarrkkeedd..

When ordering replacement impellers and deflectors, refer toNotes on accompanying illustrations.CCAAUUTTIIOONN:: MMoosstt ffoouurr--bbeeaarriinngg oouuttbbooaarrdd mmaacchhiinneess hhaavvee aadduupplleexx ((ttaannddeemm)) bbeeaarriinngg aasssseemmbbllyy.. TThheessee bbeeaarriinnggss aarree aavvaaiill--aabbllee oonnllyy ffrroomm SSppeenncceerr aass aa ccuussttoomm--mmaattcchheedd sseett ooff ttwwoo:: oonneebbeeaarriinngg ffoorr tthhrruusstt aanndd oonnee bbeeaarriinngg ffoorr rraaddiiaall llooaadd.. TThheesseebbeeaarriinnggss aarree nnoott iinntteerrcchhaannggeeaabbllee wwiitthh ccoommmmeerrcciiaallllyy aavvaaiillaabblleebbeeaarriinnggss ccaarrrryyiinngg tthhee ssaammee ppaarrtt nnuummbbeerr;; tthheeyy ccaann oonnllyy bbeeuusseedd IInn mmaattcchheedd sseettss aass ffuurrnniisshheedd bbyy TThhee SSppeenncceerr TTuurrbbiinneeCCoommppaannyy.. FFoorr bbeesstt rreessuullttss,, ffoollllooww iinnssttrruuccttiioonnss eenncclloosseedd wwiitthheeaacchh mmaattcchheedd sseett ooff bbeeaarriinnggss..DDiissaasssseemmbbllyy && RReeaasssseemmbbllyy

1. Remove packing plate nuts from packing plate (32 and 20)on each end of machine. Slide both packing plates andpacking (32 and 20) on shaft away from heads. Remove allpacking from packing box when applicable (38 & 39).

2. Remove snap ring and back off coupling sleeve. Check gapbetween coupling hubs. See coupling manufacturersinstructions for other than Sier Bath.

3. Measure distance B from outboard bearing bracket (19) tooutboard bearing cap (17). Remove bolts in thrust assemblyhousing cap.

4. Remove lock nut (15) and washer from end of shaft, andloosen bolt (19A) binding housing in bracket.

5. Remove bracket bolts (21). Using puller, remove completethrust assembly and bearings.

6. Remove bolts on end head, holding flat ring and end head tohousing. (Use a chain hoist if available to hold head whileremoving bolts). After removal of end head, keep shaftsupported while removing internal parts.

7. Remove intake spiral (13) after marking position to insurecorrect reassembly. See note (A).

8. Remove rope packing (10) and half deflector (26).9. On other than keyed construction, measure distance from

impeller hub to any step or shoulder on shaft and mark forreassembly. On stacked and keyed construction, removenuts and washers (24A) and shaft sleeves (24B). Removeimpeller (29) and its hub spacer, number or mark them forreplacement in their proper position. See note (B) followingparagraphs.

10. Check axial position of each deflector at 4 radial points withreference to end of housing and record.

11. Remove spacer (27) holding rope packing in place. Numberor mark for replacement.

12. Remove rope packing holding deflector in place. Then pullor work deflector (11) out of housing. Number or mark forreplacement.

13. Proceed to remove the remaining stages in the same way,numbering or marking all impellers, spacers, deflectors, etc.,to insure proper replacement.

14. Check deflector stops for damage.15. Reassemble in reverse order, replacing end head gasket

(22) and any worn packing (32, 10, 25, 20).TToo CChhaannggee tthhee IInnbbooaarrdd BBeeaarriinngg ((MMoottoorr EEnndd ooff tthhee MMaacchhiinnee))1. Remove snap ring and back off coupling sleeve.2. Check gap on coupling hubs.3. Loosen and remove motor bolts, and slide motor back.

4. Remove coupling hub from machine shaft.5. Remove packing plate nuts from packing plate (32 and 20)

on each end of machine. Slide both the packing plates andpacking (32 and 20) on the shaft away from the heads.Remove all packing from packing box where applicable.

6. Remove bolts on both caps (8 and 8A) on three-arm bearingbracket (33).

7. Slide front cap off shaft, and push back cap away from bracket.8. Remove bolts holding inboard bracket in position while

supporting end of shaft.9. Slide inboard bracket off bearing.10. Remove locknut, washers, and bearing.11. Replace bearing and parts in their proper order.Realign coupling and check the hub before and after boltingmotor in place (Refer to page 5).NNootteess::

(A) Upon reassembly, with all internal parts installed, the intakespiral edge should project slightly beyond end of housing so thatend head will hold all stationary parts in position.

(B) On stacked and keyed impeller construction, the first nutinstalled is tightened with a spanner wrench, then loosened onefull turn to allow for impeller hub expansion. The second nut isbrought up to the first nut with the lockwasher in between. Locknut in position with washer tabs.BBaallaanncciinnggEach machine is fully tested before leaving the Spencer factoryto be sure vibration, if any, is within specifications for the partic-ular machine. However, rough handling during shipment orimproper disassembly and reassembly of a machine can upsetits balance and result in excess vibrations.

When a machine is being disassembled for repairs, mark theparts as they are removed. There should be no vibration whenthey are reassembled in the same order.

However, if impellers are being replaced or there is any vibrationdue to an unbalanced condition after assembly, use the followingprocedure:

If there is any vibration or unbalance, the coupling should bechecked first for misalignment. If realignment does not correct theimbalance, rotate coupling hubs or machine shaft and motorshaft in 90 increments until minimal vibration is obtained.

NOTE: In the event of problems following repair procedures,contact the Spencer Service Department or your SpencerRepresentative, describing the nature of the difficulty. Alsofurnish the machine serial number.

1155

1166

PPRROOBBLLEEMM PPoossssiibbllee CCaauussee CCoorrrreeccttiivvee AAccttiioonn

IInnddiiccaattiioonn:: llooww pprreessssuurree//vvaaccuuuumm aass ddeetteerrmmiinneedd bbyy ggaauuggee mmeeaassuurreemmeenntt oorr pprroocceessss

Incorrect rotation. Change motor leads to correct rotation. Air or gas lines too small, causing Increase line sizes or install machine with higher output

excessive friction loss. pressure. Machine reassembled incorrectly in field. Disassemble machine and reassemble correctly. Valves in line not fully open or check Open valves or inspect check valve.

valve improperly installed. Inlet, discharge or piping system Remove obstructions, clean filter.

partially blocked. High inlet temperature. Position inlet in a cooler area. Low inlet pressure. Check inlet for obstructions or install machine with higher

discharge pressure. Machine not running at design speed. Refer to motor manufacturers instructions; check motor

speed; check voltage connections. Low gas density or specific gravity. Check gas analysis and increase density or install

machine designed for prevailing conditions. Machine air passages clogged. Disassemble, clean and inspect all parts. Impellers damaged by explosion, Replace impellers.

abrasion or vibration. Inlet spiral has rotated, partially blocking Rotate spiral to correct position and pin or clamp in

inlet (4BOB only). position. Pressure or vacuum gauge inaccurate. Calibrate gauge; always use a U tube manometer for

checking pressure and/or vacuum.IInnddiiccaattiioonn:: mmaacchhiinnee ddeessiiggnn ccaappaacciittyy ttoooo ssmmaallll ffoorr tthhee ssyysstteemm

System requirements incorrectly calculated Install larger volume or lower pressure machine to handleby customer. system requirements.

System leaks or too many openings. Locate and repair leaks; reduce number of openings.

IInnddiiccaattiioonn:: mmeeaassuurriinngg ggaass oorr aaiirrffllooww iinnccoorrrreeccttllyy

Flowmeters calibrated incorrectly. Calibrate flowmeters; use proper orifice for meter (check with flowmeter manufacturer).

No means of measurement available. Obtain and install flowmeter.

IInnddiiccaattiioonn:: mmaacchhiinnee mmaallffuunnccttiioonn bbeeaarriinngg wwhhiinniinngg oorr ggrroowwlliinngg

Too much grease, bearings hot. Remove excess grease. Check bearing temperature; refer to lubrication instructions in this manual.

Too little grease, bearings dry. Grease according to instructions. Bearing failure. Replace bearing(s). Bearing retainers worn. Replace bearing(s). Bearing turning on shaft, retaining nut loose. Tighten nut, check for damage. Bearing turning in housing, housing worn. Replace housing and bearing. Bearing replaced incorrectly, particularly in Follow installation instructions carefully; check bearing,

tandem assembly (e.g., angled, cramped shaft and housing dimensions.or reversed).

Bearing(s) overloadedtoo much thrust Replace bearing(s); reduce thrust by lowering air or gasdue to high density air or gas. density; install smaller impellers or install machine

designed for application conditions.

IIXX.. TTrroouubblleesshhoooottiinngg GGuuiiddee

IINNSSUUFFFFIICCIIEENNTTAAIIRR OORR GGAASSTTHHRROOUUGGHHSSYYSSTTEEMM

MMAACCHHIINNEENNOOIISSYY

1177

IIXX.. TTrroouubblleesshhoooottiinngg GGuuiiddee (cont.)PPRROOBBLLEEMM PPoossssiibbllee CCaauussee CCoorrrreeccttiivvee AAccttiioonn

IInnddiiccaattiioonn:: mmaacchhiinnee mmaallffuunnccttiioonn iinntteerrnnaall nnooiissee

Impellers and/or deflectors worn due to age Correct abrasive conditions if present; replace impellersor abrasion from dirty air or gas.and/or deflectors.

Impeller(s) hitting after customer reassembly Reassemble according to instructions, tighten impellers.and/or impeller(s) slipping shaft due to heat Bleed air at low flow to reduce heat. Change inletor excessive inlet pressure. conditions if necessary.

Machine in surge (see page 8). Increase airflow. Keyed hubs rattling on startup. Normal condition (loose when cold, tight at operating

temperature). Machine running rough, out of balance. Rebalance and/or clean machine (see next topic

Machine Vibrating). Deflector packings rubbing on shaft or Ignore if audible only when machine is turned by hand. If

impeller hub (will seat themselves if new). otherwise audible, replace packings. Motor not aligned in housing (SOH) Reassemble and carefully align shaft and motor.

causing impeller to hit. Coupling misaligned and/or out of grease Check alignment; check coupling for wear and replace if

(4BOH & 4BOB). necessary; relubricate according to instructions. Foreign material in machine. Disassemble machine, inspect and clean. Reassemble

and consider installing filter to prevent clogging.

IInnddiiccaattiioonn:: mmoottoorr mmaallffuunnccttiioonn

Abnormal hum or whine. Check motor manufacturers instructions; check voltagesupply and connections.

Low voltage, motor not up to speed. Correct improper voltage. High voltage (causes noise and burnout). Correct improper voltage. Bearing noise. See previous instructions for blower bearings. Loose part in motor. Tighten, repair or replace (check motor manufacturer). Low frequency. Correct improper frequency. IInnddiiccaattiioonn:: mmeecchhaanniiccaall ffaauulltt

Material buildup on impellers. Clean impellers, install inlet filter to prevent further buildup. Shaft bent. Consult Spencer Service Department. Bearing failure. Replace bearing(s). Unbalanced replacement motor installed. Balance motor. Impeller failure. Replace impeller(s). Motor not aligned in housing (SOH & 4BOH), Align motor, realign shaft.

impeller rubbing. Coupling misaligned (4BOH & 4BOB). Align coupling. Inlet and/or discharge piping connected Install flexible connectors at inlet and discharge.

to machine without flexible connector,causing torque or stress on housing.

Machine bolted down, causing Remove bolts, use dowel pins or set in guide channels. misalignment.

Bearing(s) cramped due to improper fit. Check bearings, shaft and housing, correct bearing fit. Piping not adequately supported. Anchor piping properly beyond flexible connector. Incorrect motor voltage, causing assembly Check voltage and wiring connections, correct voltage.

to operate at improper speed.

MMAACCHHIINNEENNOOIISSYY

MMAACCHHIINNEEVVIIBBRRAATTIINNGG

1188

IIXX.. TTrroouubblleesshhoooottiinngg GGuuiiddee (cont.)PPRROOBBLLEEMM PPoossssiibbllee CCaauussee CCoorrrreeccttiivvee AAccttiioonn

IInnddiiccaattiioonn:: mmeecchhaanniiccaall ffaauulltt ((ccoonntt..))

Packing box(es) too tight, too loose, wrong Adjust, relubricate or replace packing; align box(es).packing, packing dried or worn out, out ofalignment.

Mechanical seals misaligned, broken or Realign or replace seals or parts.worn out.

Solids or liquids passing through machine. Disassemble, inspect and clean machine; install inletfilter to prevent further contamination.

Soft foot on motor or blower. See page 5. Machine in surge (see page 8). Increase airflow. Stacked impeller hub nuts too tight. Loosen hub nuts 1/2 turn. Belts on belt drive machine loose, slapping. Tighten belts to proper tension. Harmonic pulsation from gasoline Change engine speed to remove pulsation.

engine driver. Machine not on solid foundation. Reinforce foundation.

MMOOTTOORR HHOOTT ((CChheecckk wwiitthh ssuurrffaaccee tthheerrmmoommeetteerr;; ccoonnssuulltt SSppeenncceerr SSeerrvviiccee DDeeppaarrttmmeenntt ffoorr aassssiissttaannccee)) Ambient temperature too high for insu- Cool motor or replace with motor having proper insulation.

lation class. Incorrect voltage. Change to correct voltage. Incorrect cycle. Change to correct cycle. Electrical short-circuit insulation failure. Repair or replace motor. Motor overloaded, too much air Check for system leaks, throttle back butterfly valve,

passing through blower. install larger motor. Unbalanced voltage supply (gas boosters Check power company for correction.

only).

MMAACCHHIINNEEVVIIBBRRAATTIINNGG

1199

CCuussttoommeerr MMaaiinntteennaannccee LLooggDATE PROCEDURE COMMENTS INITIALS

Blowers & Vacuum Systems with an Engineering EdgeTThhee TTuurrbbiinnee CCoommppaannyy,, 660000 DDaayy HHiillll RRooaadd,, WWiinnddssoorr,, CCTT 0066009955--44770066

TEL 800-232-4321 860-688-8361 FAX 860-688-0098 www.spencerturbine.com

PPrroodduuccttss && SSeerrvviicceess

IInndduussttrriiaallllyy rraatteedd pprroodduuccttss ooffffeerriinnggeeffffeeccttiivvee ssoolluuttiioonnss ffoorr aaiirr aanndd ggaass mmoovviinngg pprroobblleemmss:: Multistage centrifugal blowers Single stage centrifugal blowers Gas boosters & hermetic gas boosters Regenerative blowers Positive displacement blowers & packages Modular central vacuum systems Mobile or stationary integrated vac uum

systems Dust collectors and separators Custom-engineered products with special

materials for extreme tempera tures and pressures

CCoommpplleemmeennttaarryy aacccceessssoorriieess wwiitthh ssiinnggllee ssoouurrccee ccoonnvveenniieennccee aanndd ccoommppaattiibbiilliittyy:: Electrical control panels, including UL and

CUL Listed standard and cus tom designs

Dissolved oxygen control systems Comprehensive selection of tubing, fit tings,

vacuum hose, valves and tools Valves, gauges, couplings, shrink

sleeves, vibration isolators and other system components

CCoommpprreehheennssiivvee eennggiinneeeerriinngg aannddootthheerr ccuussttoommeerr ssuuppppoorrtt sseerrvviicceess:: The industrys largest complement of

technical specialists in air and gas moving technology

Worldwide parts and service organization Application research and testing facility

WWoorrllddwwiiddee oorrggaanniizzaattiioonn ooff ssaalleess rreepprreesseennttaattiivveess aanndd ddiissttrriibbuuttoorrss ooffffeerriinngg:: Product selection, installation and op eration

assistance Comprehensive system design services Follow-up services and troubleshooting

FFoorr tthhee nnaammee aanndd tteelleepphhoonnee nnuummbbeerr ooff yyoouurr llooccaall SSppeenncceerr RReepprreesseennttaattiivvee,, ccaallll 11--880000--223322--44332211

oorr eemmaaiill mmaarrkkeettiinngg@@ssppeenncceerr--aaiirr..ccoomm

Form AA15.4 Copyright 2012 The Spencer Turbine Company 041012KBAPrinted in the U.S.A.

Spencer Corporate Headquarters and Manufacturing Plant, Windsor, CT USA

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