WP240A-G D U P L E X

AIR COMPRESSORS

This sheet contains maintenance and repair information for the WP240 series of Air Compressors. TheSeries has two electric motor-driven pumps mounted on a common storage tank. This set-up

allows one motor/pump unit to be available for independent standby operation; an automatic alternatingoperation with standby capability; an in-unison operation for faster recovery, depending on systemrequirements.

TABLE OF CONTENTS

MAINTENANCE SCHEDULE . , . . . . . . . . . . . . . . . . . . . - . . . . . . . . I . I Page 2

1. Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2. Draining Tank, Bowl . . . . . . . . . . . . . . . . . . . . . . . . . . . .3. Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4. Filter Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

elief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6. Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7. Pressures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Paragraph 1Paragraph 2Paragraph 3Paragraph 4Paragraph 5Paragraph 6Paragraph 7Paragraph 8

OTINC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6

1. Wrong Oil Pressure (1 HP and Up) . . . . . . . . . . . . . . . . . . . . .2. Oil Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3. Excessive 0il Consumption . . . . . . . . . . . . . . . . . . . . . . . .4. Noisy Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5. Noisy Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6. Noise Not Locatable . . . . . . . . . . . . . . . . . . . . . . . . . . . .7. Won’t Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8. Won’t Pump Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9. Goes Out On Electrical Qverload . . . . . . . . . . . . . . . . . . . . .

10. Excessive Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Paragraph 9Paragraph 10Paragraph 11Paragraph 12Paragraph 13Paragraph 14Paragraph 15Paragraph 16Paragraph 17Paragraph 18

. . . . . . . . . . . . ..I....... . . . . . . . . . . . . . . . . . . . . . . Page9

1. mp Removal and Repair . . . . . . . . . . . . . . . . . . . . . . . . . Paragraph 192, Oil Pump Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . Paragraph 203. Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Paragraph 214. Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Paragraph225. Intake and Exhaust Valves, Unloader . . . . . . . . . , . . . . . . . . Paragraph 236. PRV Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Paragraph 24

DATA TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TSLIST . . ..=.............................

DERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . Page 11

. . . . . . . Page 12

. . . . . . Page 15

ev. 1 l-73.F.L

F o r m N u m b e r 75-7130Commercial DIV.

Annually, lubricate motor in accordance withinstructions on nameplate.

1. Check oil level ( a n and larger).(para. 1)

k and filter bowl. (para. 2)pressure. (para. 7)certain that pumps do build up

to cut out pressure and shut off. (para. 8)

Table I-Compressor equirements.

Compressor bient SAE viscosity OilOWOF

2F80ove 80 F

in water from tank and filter bo4. Check tension of belts. (para. 6)5. Check operation. (para. 8)6. Check safety. (para. 5)

heck filter cartridges. (para. 4)

1. Change intake filters. (para. 3 ) *2. ange3. rvice motors. (para. 1)4. rform remaining 3 months checks.

n the tank by opening the drain cock. (This isl o c in the middle o e tank at one end on both the30 and 80 gallon units. w a few seconds to purge the

rain the pressure regulator filter bowl(s) (1/4-2y opening the cock on the tom of the bowl(s).units have automatic drains. eekly draining is the

usual minimum requirement. owever, the frequency ofdraining depends upon climatic conditions. In humid

necessary. I f this is the485 automatic drain kit.

i r t y operating environment may r e q u i r e t h eperformance of these items more often,checks will uncover any need for more frequentreplacement.

The air cleaner used on the l/4 to 2 compressorsis special ly selected for use on neywell a i rcompressors. To check, remove it from the holder and

-

uincy units use splash lubrication on the 1/4units and pressurized lubrication on 1check oil level, a dipstick is proviboth pumps, remove and wipe othem, then remove for reading. If oil is necessary, it isadded through the dipstick port, Use oil in accordancewith Table I. A high quality non-detergent automotiveoil is satisfactory.

hold a flashlight against the outside. The light from theflashlight should be apparent through the filter whenobserving from the inside of the filter (in brightly litrooms, you may have to shield some of the ambient lightfrom the filter).

The 3 HP units use the uincy Air Maze filter silencerwhich can be checked in the same manner. It is washablea n d c a n b e c l e a n e d i n a s o l v e n t (preferablynon-flammable) or warm soapy water.

In addition to checking oil level, on 1larger, check the oil pressure on the gage.should be in the 10-20 range. h e filter bowl in the l/4 to 2 size is drained by

o change oil, stop both units (it is a good idea toang a warning on the control switch to prevent personal

injury or accidental starting out oil), remove theallow oil to drain

This causes excessive oilnation of the compressed air.

narily, a crankcase n e e d not be flushed, however, ifit is felt necessary, use a non-flammable solvent. (auto parts stores have a supply.)

opening the valve on the bottom. It should be openedonly as long as is required to drain the liquid. Allowingair to blast through may harm the filter element.

The conditions of all filter elements may be checkedby noting the line pressure after the filter andsubtracting this from tank pressure while the system isoperating. The difference should not exceed 15

The 3 units have an automatic drain and requireonly a visual check of the bowl to confirm performance.

SCREW (2)8-32X3/8"RD HD STL

14000229-002SCREW, CARRIAGE

313001 "O" RING

312997 BO

WP240-a

3

Shut off air supply to filter and bleed down unitthrough the drain valve. emove the bowl ring and filterassembly.

owl ring may need a strap wrench to remove butshould only be firmly hand t ightened whenreassembled.) Disassemble filter assembly and replacecartridge.

eassemble, being careful that the bowl seal ring is inthe groove in the cover. Close drain and turn on airsupply slowly, checking for leaks.

To change filter in the 3 P units refer to Figure 2.Shut off air to filter and bleed down housing bymanually operating drain trap. ove wing nut andclamp _ g from housing and re housing and auto.drain. emove knurled nut at bottom of filter andreplace filter. Reassemble, taking care that "O" ring sealon bottom side of cover has not been disturbed. Turn onair slowly, checking for leaks.

Fig. 2.

Safety relief valves are factory set to approximately15 PSI higher than the rated pressure of the compressor.Check each safety relief valve by pulling on the ring tounseat it. MALFUNTIONING VALVES SH

MEDIATELY. Safetyre-relief valves are located next to the pressure switch oron the tank.

ee Fig. 3)

a n d pressure should depress the belt(s) about l/2inch. The belt(s) should be tight enough to preventslipping but no further. Adjust tension by loosening themotor hold-down bolts, moving the motor until tensionis correct, then retightening the bolts. Insure that beltand pulleys for each unit are aligned.

1/2" A P P R X

M O T O RPULLEY

WP230-f

uring the weekly checks, verify that the tankpressure is in the 70-90 PSI range and the PRV pressurefor each unit is at the proper setting.

The three most common ways that uplexCompressors can be used are:

1. On-site or factory wiring permitting individualmanual selection of either pump; leaving the other pumpas a non-automatic backup. See wiring diagram Al.

2. On-site or factory wiring permitting manualselection of pump unit with an automatic backup. Seewiring diagram A2.

n-si te or factory wiring providing automaticion between pumps after each pump cycle with

automatic backup. See wiring diagrams

As a weekly operational check, it is sufficient toconfirm that both compressor pumps do have an offcycle and are not continuously running. The manualalternation systems should be switched over to confirmstartup and off cycle of both pumps.

Every three months the cut in pressure.. pump uptime, cutout pressure, and off time should be measured.It should be below 50% operation (more off time thanon time) and operate approximately from 70PSI. Switch pumps and recheck (switching doneautomatically on some systems).

75-71304

FUSES, FUSED DISCONNECT OR CIRCUIT BREAKERI{ IF SPECIFIED

- - - I -

I . &

3

I

i j i

Mom+

iLATTER

PRESSURE SETTING ONPS- I TO BE APPROX 5 - 10PSI HIGHER THAN PS 2

:OMPRESSOR POWER SUPPLYf- - , -‘-.- F U S E S ,

j 1 SEPARATE POWER ?I-; Z;/JSSCEODNNECT, I CONTROL SUPPLY , ; i 0R CIRCUIT

REAKER

NOTE: INCLUDES

10 AMP FUSED ERAICIRCUIT FOR 120VAUX EQUI PME NT

(NOT SHOWN)

MOTOR STARTERS MUSTBE QUIPPED WITHCONTROL COILS TO MATCH

LEGEND

;;T;,R$ CIRCUIT P R E S S U R E FACTORY WIRING ____

SWITCH #2- W I R I N G B Y C U S T - - -

75-7130-a

mati ernation withage 1485 (for

olatedCircui t

tter method is to keep these figureattached to each unit is handy).

periods (with no change in pressure range) indicate anincrease in air consumption and is always with* creasing pump up time. This could be due to ad

r?~ices or leaks. Increasing pump up time with nochange in the pressure range or off time indicates wear inone or both of the compressor pumps and may warrantcloser observation as it is usually followed with anincrease in oil consumption.

Check backup operation by operating the safety reliefvalve (Paragraph 5). he second pump should cut in

the tank pressure has dropped 5-10 PSI below cut inUFe for the first unit.

If there is a suspicion of wear, theup time should be checked against the value given inTable II. If it differs from the table by more than 10%,then an analysis of the cause should be made accordingto Paragraph 16, and the proper action taken.

This section attempts to minimize the time requiredto isolate the most common complaints and pinpoint themost common causes for them. Honeywell ApplicationsEngineering (Arlington Heights) would appreciatehearing of any problems encountered and not listed.These will be considered for future editions of this sheet,

(1 HP and

il pressure in the 10-20 PSI range is normal. Thereshould be no pressure during “off” cycle.

Check oil level before adjusting pressure. The oilpressure is regulated by a spring loaded ball mounted inthe bearing carrier or in the crankcase near the bearingcarrier. This is on the same side as the dipstick, Springpressure is controlled by an adjusting screw. Turning thescrew inward will increase the pressure.the adjustment lock nut before making any adjustment,and turn adjustment screw slowly until the oil gageregisters approximately 15 lbs. After adjustment hasbeen made, tighten the adjustment screw lock nut.

If you are unable to get sufficient oil pressure, checkthe oil pump(s) and pressure gage(s) by unscrewing thepressure gage(s) until oil seeps around the threads duringoperation of the compressor(s). This indicates that oilpressure is reaching the system, and confirms operationof the pressure gage(s). (The units require oil pressure tooperate intake valve unloaders and allow the unit to

pump. ck of pumping ability is a good indication ofloss of oil pressure.) If oil appears at the threads of thegage, and the oil pressure gage indicates no pressure,suspect that the oil gage may be faulty and replace. If nooil appears at the threads of the oil gage, this is anindication of possible oil pump failure.

If the oil pump must be replaced, see Paragraph 20for removal and repair of oil pump housing. In cases oflow (not zero) pressure, the cause may be excessive wearin the pumping unit. mp up time shouldagainst the table and listen for unusual knocks indicatingworn bearings,

D I P S T I C K I PRESSUREGAGE

OIL INTAKE FILTER(I T O 3 H P O N L Y ) M A Y B EREMOVED FOR CLEANINGAND INSPECTION OFCRANKCASE ACCUMULATION

WP230-J

Fig. 4-Crankcase End View (1 HP Model).

il leaks usually occur around screws and gaskets andusually can be corrected by tightening the screwinvolved or replacing the gasket.

If you are unable to locate the source of the leak,clean the unit as much as possible and sprinkle thesuspect areas with baby powder (being careful not to getpowder into intake). Recheck after several hours and theleak should be located.

Excessive oil on the after cooler pipe or compressorhead usually indicates air leaks. Locate these with soapsolution while the compressor is operating. Theunloaders should also be checked while the compressoris in the ‘“off” cycle as they are pressurized during thattime.

XCESSIVE OIL CONSUMPTION

This is a difficult problem to resolve and thefollowing steps should be taken before any repairs begin.

a .

b.

c..

d.

e .

Confirm the Complaint - Oil at the tank draindoes not necessarily indicate high oil consumption.Since oil is commonly available in quarts, thefollowing is the minimum number of days a quartshould last per unit (assuming 50% or lessoperating cycle).

1/4HP . . . . . . .. OVER YEARl/2 HP . . . . . . . . OVER YEAR3/4 HP . . . . . . . . OVER YEAR1 HP . . . . . . . . . . OVER YEARl-1/2 HP . . . . . . OVER YEAR2 HP . . . . . . . . . . 280 days

. . . . . . . . . . 190 days

Make certain the proper grade of oil is being used(Table I) and the compressors are not beingoverfilled. Over filling always causes high oilconsumption. Oil level should never be above thehigh mark on the dipstick.

Check for leaks.

Check intake filter/piping and crankcase breathervalve(s) for cleanliness and obstructions.

Check for excessive oil pressure or high percentoperation. (Paragraphs 1 and 7.) If afterperforming the above, a unit is still considered anoil consumer with no apparent external cause,then:

Check pump up and cycle pressures against thevalues in Table II. Differences greater than 10%indicate worn parts. (See Paragraph 16 .)

Remove valves and examine piston top. Oil wettedis acceptable but an accumulation of oil indicates adefective pump.

PARAGRAPH 12 - NOISY PUMP

The most common reason for a noisy pump is a looseflywheel or motor pulley. Check these first. Then check:

a. Oil pressure - if low, check pump as described inParagraph 9. Lack of’ oil pressure may have causedbearing damage.

b. Valve assemblies - make certain they are tight.

7 75-7130

c. rist pin or connectin rod bearings - stop pumpand remove belts. pump back and forth acouple of inches, u e flywheel. If knock canbe heard it is probably a bad wrist pin orconnecting rod bushings. o d bushings can beinspected by removing sid plate and rod caps.Another way to check is to remove head andobserve piston while rocking flywheel. istonshould follow movement without play (except attop and bottom dead center where piston willappear to hesitate). Inspect cylinder and head forcarbon build up,

a d main bearings - check for end play byattempting to move flywheel in differentdirections. Listen and feel for any play. End playon the crank shaft can usually be eliminated byremoving one of the shims beneath the bearinghousing on the side opposite of the flywheel. Aslight drag when turned by hand, is proper.

13 -

ost likely cause is a loose motor pully. A lowpitched growl could be an indication of low voltage.

If the noise was slight, lubricate motor in accordancew i t h instructions o n nameplate. f noise disappearsmotor will probably be ok but sho d be watched morecarefully as its life has been shortened by the drybearing. To checkcheck for side play so turn motor byhand, any side plabearings-replace motor. n d play (movement of motorshaft in and out) is common in this type of motor andnot an indication of wear.

Another noise which is not easily traceable is the beltguard. This can be checked by applying hand pressure tothe outside surfaces at different points.

-

If it attempts to start, remove belt and see if motorwill start and run by itself. If motor fails to run, repairor replace motor. If motor appears to run properly itmay still have a defective capacitor (single phase modelsonly). ith the belt(s) removed, try turning pump byhand. It should tur freely. If so, then motor is defectiveor power is bad. echeck both and replace motor if

If pump fails to turn freely, check in

If there is n o attempt to start, make certain power isapplied and fuses installed. Check-out of electrical powerapplication to pump motor will differ with the operationrequirements of each system. See typical wiring diagrams

C. If a voltage tester is available, check forproper power at the motor terminals. If no power, tracew i r i n g to locate problem. (Check first at pressureswitch .)

there is power at motor terminals but unit isng no attempt to start, feel motor. If hot, built in

thermal protectors only) may bedisconnecting motor. and allow motorto cool down. If motor now attempts to start treat asdescribed above. If cold, motor is

-

This section has three categories as follows:

The use of a large screwdriver or similar implement ishandy here. Place the point end against suspected areasand the other against the ear.

FL A

In the 1/2 and 1 /4 sizes: a noise which cannotbe traced to the pump or motor will usually be thecheck valve. (The larger unitThe check valve should be

uns, but tank shows no build ups up, but not completely or takes excessive

itmp slows, stalls, or goes out on overload

supply to eliminate possibility of brokenlines by closing supply valve on tank, Test eachmotor/pump unit separately to determine which unit isat fault. If one unit fails to build up, remove air intake.

f still no success, r lines connected toand up), the unit is running,

oming out of the copper line. If air isming out of line, the unloader pilot

efective. It should be removed, cleaned anThe unloader pilot is at the other ends e e ragraph 23, and parts list forand pilot.

urn off power to both motor-pump units.emove belt from suspect unit and bleed down tank,

Turn pump by hand. If it should turn freely, the motormay be defective. If at do not turn freely, it may be aplugged after cooler tube. sconnect discharge tube andturn pump by hand again. If it now turns freely, check

u tank for obstructions. If still hard to turn,is internal to pump.

-

between pump and tantank, etc).

If this occurs the first time startup, the motorwiring or voltage may be wrong. check these and alsoconfirm that the oil has been added to the compressor.Check for excessive tank pressure.

line leading to themcouple of raps with lunt instrument such as thehandle of a large screw iver or a small hammer, willloosen the cover so it may be lifted off. Carefullyremove the diaphra pose the piston cupwhich operates th h the unit running,manually epress the piston there shouldchange in the intake soun icating the valve is beingheld open. Slowly depressi e piston, you should firstfeel the resistance of the return spring, then the pistonc o n t a c t the Intake valve, thenmove the valve off the seat.can remove this piston cup fur cleaning beneath, ifnecessary .

belt and check motor alone, Turn pump byit should turn freely, f not check as described in

If motor appears to run properly without pump, andturns freely, reconnect pump and run with intaked (cover with hand). If motor and pump now run

properly, a low voltage condition probably exists. Take avoltage reading at the tor terminals while the unit ispumping. (Fractional motors will usually ““growl”with low voltage, a go0 ue to the problem.)

Usually due to omission of vibration pads or an unevenistributiu~~ on the pads. Check this by shutting

off unit and applying your weight to the differente rocking should beoors adjustable levelers

If the source of trouble has still not been located,remove the intake an exhaust valves to inspect for dirtor warpage. The piston to and cylinder walls can beinspected at this time.

elt guards often produce a vibrating noise evenunder normal operating conditions. eadjusting willusually eliminate this.

In some cases, the normal operat ion of thecompressor is consid excessive noise or v i b r a t i o n . Inthese cases a remote a intake, adjustable pads, and airline vibration isolators may be required. Isolators are

eck tank pressure, s in the commercia l warehouse.

If major repair is needed, a Parts List for the pump tobe repaired can be ordered. See Ordering Information.

Shut off power to both units, drain oil from faultyunit, and bleed down tank. emove belt guard, loosenmotor mounts and remove belt(s).

Remove after cooler tube at pump end. If tube istype which wraps around crankshaft, then remove bothends and any hold down straps.

If flywheel is accessible, then remove it at this time;otherwise it can be removed afterward if necessary. Thel/2 HP unit is held on with a keyed shaft and setscrewand will probably need a puller. All others use a splithub and key and can be removed by removing hub boltsand nuts and driving a wedge into split.

e m o v e pump intake filter and the unloader airsupply line (3/4 and up). emove pump hold-down

bolts and remove pump. (CAUTION: If flywheel has notbeen removed, its weight may topple pump when thehold-down bolts are removed.)

hen installing new pump, be sure flywheel is in linewith motor pulley before removing wedge andtightening. NOTE: When removing discharge tubeconnector from old pump, it is recommended that themale coupling on the discharge tube be loosely installedin the connection to prevent its collapse during removal.

e oil pump is factory ground as an assembly, andpartial replacement is not possible. In the event that thepump, or crank bearing which is part of the pump, isdeemed faulty, it should be replaced as a unit. Theassembly is held by four bolts (see Figure 5). Thereplacement is complete with oil gage and can beswitched out in very little time.

r_I-

Fig. 5–Crankcase GroupWP230-k

isconnect electric power loosen motor clampingbolts and slide motor h nit. I f the compressorhas a totally enclosed belt ard, it will have to beremoved. emove and replace belts.held snug against belts when retightenbelt(s) do not have more than 1 icertain motor is square to belts aturn on power. T-4

AS

excessively after being installed; recheck perafter one week.

efore replacing motor, remotor is consid

used, INTAKE VALVE ASSY

n the 1/4 unit, remove the Iwo valve lockingnuts in the head and the valve rts can now be removed

for proper order o freassembly.

a)Eac

h40

mod

el h

as tw

o id

entic

al m

otor

-pum

p u

nits

. Dat

a sp

ecif

ied

is a

ppli

cabl

e to

bot

h un

its.

b)Unlo

ader

sol

enoi

d in

aft

erco

oler

line

.

ARTS LIST

INTAKE FILTERS

Fig. 9-Three-Way Valve Assembly (3/4

QUINCY AIR MAZE INTAKE F

ydraulic Unloader Assembly.

P A V STATION

units use a oneywell PP901 oretailed maintenance and repair

oneywell Sheet No. 75-2558. Tochange the filter elements on all sizes, refer to Paragraph4.

V station used on the 3 HP units is acombination of Pall-Trinity-Micro Corp. filter andNorgren regulator and relief valve.

To perform any maintenance and repair work on thePRV station, first shut off air supply from tank. Then,bleed down system by manually operating the dram(push red button on drain valve).

Quincy Part Numbers

The regulator and relief valve can now be removedand replaced or repaired in place with the appropriaterepair kit (see parts list).

After repairing or replacing, slowly turn air back onchecking for leaks.

7 5 - 7 1 3 013

U N L O A D E R(I HP1 0UiNCI

INTAKE DISCHARGEVALVE VALVEASSEMBLYASSEMBLY

OUINCY I# 2 1 2 9 - X

~

OUINCY#2137-X

H E A D ASM QUINCY #2100-X13P

UNLOADERASSEMBLY

QUINCY PT# 7483 x

INTAKE ASSEMBLYQUINCY P T # 6671XU

DISCHARGE ASSEMBLY WP230-wQUINCY PT # 6670X

WALL MOUNTED

BY CUSTOMER

WP230-y

Item

12345678

9

10

11121314

15

16

Used onodels

Enclosedelt Guard Assy.

Quincy No.

7243X7124X7060X17124X17040X17061X7061X

Filter Element

Relief

ValveValveCage, 30 PSIGage, 200 PSI

racket, Tankracket, Wall

Bracket, PipeStrap, Pipe

16-00

833961541071836432748350

834783468345

0lt

WasherN u t

Notes:

1 -2 - Order from Norgren3 - Obtain Locally4 - Order from Quincy

Notes

1122444

3,43,44444333

15 75-7130

FILTERASS’Y &ELEMENT

(TOP VIEW)

T A N K M O U N T E D

uincy representative or:

Colt IndustriesQuincy Compressor DivisionQuincy, Ill. 62301

WP230 z

ODE%. [ WP240Colt Industries Quincy Compressor Division Quincy, Illinois U S A

[----I

WP 2 4 0 - d

State exact part number, compressor model and serialnumber from nameplate on pump or tank base.

PTM (PALLTRINITY-MICRO) PARTS:

Local distributor or:

Pall-Trinity-Micro CorporationCortland, N.Y. 13045

State exact part number.

NORGREN PARTS:

Local distributor or:

C.A. Norgren CompanyLittletown, Colo. 80120

State exact part number.

HONEYWELL PARTS:

Local Honeywell Office or:

Honeywell, Inc.1500 W. Dundee RoadArlington Heights, Ill. 60004

State part number and compressor model number.

Mechanical devices must be serviced periodically if they are expected to give continued satisfactory performance,

and controls are not an exception. How accurate and how troublefree your control system will be in the years to

come depends largely on the maintenance given it. For best results, all devices in your system should be serviced

at one time.

Time and trouble can be saved by arranging with Honeywell for a maintenance agreement which will guarantee

expert, economical care, and insure maximum life and efficiency from your system,

SALES and SERVICE from oast to Coast.. .A L A B A M A F L O R I D A K E N T U C K Y M O N T A N A Falrbocn

Bi rmingham Coral Gables Lou isv i l l e B i l l i ngs To ledoMemphis

Huntsville J a c k s o n v i l l eN a s h v i l l e

MobiIe Or lando L O U I S I A N A N E B R A S K A Youngs town

A L A S K A Shal imar B a t o n Rouge O m a h aT E X A S

O K L A H O M AMetairie Ok lahoma City

Amal illo

Anchorage T a m p a N E W H A M P S H I R E

Fairbanks G E O R G I A(New Orleans) Manchester T u l s a

Corpus ChristiDa l las

A R I Z O N APhoen ix

A t l a n t aShreveport N E W J E R S E Y

WestfieldO R E G O N

El PasoFort Worth

A R K A N S A SH A W A I I

M A I N E Eugene

Honolu luPortland N E W M E X I C O Portland

Hous ton

AlbuquerqueLubbock

Little RockIDAHO MARYLAND P E N N S Y L V A N I A Odessa

C A L I F O R N I ABeverly Hills

Bo i se LaVale N E W Y O R K Al len town San Antonio

Lutherv i l le ( B a l t i m o r e ) A lbany

El Segundo ILLINOIS AmherstAvoca (Scranton) U T A H

Long Beach Champaign M A S S A C H U S E T T S

BostonB inghamton

Harrisburg

Los Angeles Chicago Long Island CityPhi lade lph ia

Salt Lake City

V I R G I N I A

S a c r a m e n t o Lansing M I C H I G A N RochesterPittsburgh

N o r f o l k

San Diego Peoria Detroit Syracuse P U E R T O R I C O Richmond

San Francisco Rockford G r a n d Rapids White Plains San Juan Roanoke

Sunnyva le I N D I A N A Lans ing W A S H I N G T O NCOLORADO Fort Wayne Saginaw

N O R T H CAROLlNA R H O D E I S L A N DCharlotte

Eng lewood (Denve r )East Providence Mercer I s l and

Ind ianapo l i s

C O N N E C T I C U TMINNESOTA Greensboro

South Bend S O U T H C A R O L I N A(Seattle)

Spokane

Hartford I O W AMinneapo l i s N O R T H D A K O T A Columbia T a c o m a

Milford Bettendorf M lSS lSS lPPIFargo Greenville

W E S T V I R G I N I A

D E L A W A R E (Davenport) Jackson O H I O

Wi lm ing ton Cedar Rapids A k r o nS O U T H D A K O T A Char les ton

M I S S O U R I C i n c i n n a t iSioux Falls

W I S C O N S I NDIST. OF COLUMBIA

Des MoinesKansas City Cleve land T E N N E S S E E

Ar l i ng ton K A N S A S Springfield Co lumbusApp le tonMad ison

McLean W i c h i t a St. LouisCha t tanooga

Day ton Knoxv i l l e Mi lwaukee

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