pdsm350ss series - beaconmedaes · 2021. 3. 19. · instruction manual pdsm350ss series 1 - safety...

Instruction Manual

PDSM350SS SeriesTHIS BOOKLET, WHICH CONTAINS PROPRIETARY INFORMATION OF BEACONMEDÆS, IS PROVIDED TO THE PURCHASER SOLELY FOR USE IN CONJUNCTION WITH PRESSURE DIFFERENTIAL SWITCHOVER MANIFOLDS – LIQUID CYLINDERS – GASEOUS SERVICE (PDSM350SS SERIES).

GAS MANIFOLD SYSTEMS

DELIVERY PRESSURE

OUTLET PRESSUREADJUSTMENT

LEFT BANK PRESSURE

RIGHT BANK PRESSURE

Important

These instructions are for experienced operators who know the general principles and safety precau-tions to be observed in handling compressed gases. If you are not certain you fully understand the safety precautions for handling gases, we urge you to obtain and read the Material Safety Data Sheet (MSDS) for each gas being used.

Do not permit untrained persons to install, operate, or maintain these manifolds. Do not attempt to install or operate these manifolds until you have read and fully understand these instructions. If you do not fully understand these instructions, contact BeaconMedæs.

Be sure this information reaches the operator. Your supplier has extra copies.

Part No. 1

Instruction Manual

PDSM350SS Series

1 - Safety PrecautionsProtect yourself and others. Read and understand the following instructions before attempting to use this equipment. Failure to understand and follow these instructions could result in serious personal injury and/or damage to equipment. Because of the many potential hazards associated with gases, read the Material Safety Data Sheet for each gas you will be using.

• Know and understand the physical and chemical properties of the gas being detected.

• Observe general precautions for the use of gases.

• Observe safety precautions for the gas being used.

• Read and follow precautions on cylinder labels.

• Never use these manifolds with gases not compatible with the materials of construction. The use of gases not com-patible with the materials of construction may cause damage to equipment or injury to personnel.

• Many gases can cause asphyxiation by displacing oxygen in the atmosphere. Make certain the area where these manifolds are operated is well ventilated. Provide a device to warn personnel of oxygen depletion in the work area.

• Use this equipment only in well ventilated areas. Vent gases to the outside atmosphere, and in an area away from personnel. Be sure that venting and disposal methods are in accordance with Federal, State, Provincial and local requirements. Locate and construct vent lines to prevent condensation or gas accumulation. Be sure the vent outlet cannot be obstructed by rain, snow, ice, insects, birds, etc.

• Relief devices should be installed and properly vented in all gas handling systems to protect against equipment failure and overpressurization.

• Never connect this equipment to a supply source having a pressure greater than the maximum rated pressure. Refer totheProductSpecificationsformaximuminletpressures.

• Never permit oil, grease, or other combustible materials to come in contact with cylinders, manifolds, and connections. Oil and grease may react and ignite when in contact with some gases – particularly oxygen and nitrous oxide.

• Cylinder, header, and master valves should always be opened very s-l-o-w-l-y. Heat of recompression may ignite combustible materials.

• Flexible hoses should never be kinked, twisted, or bent into a radius smaller than 3 inches. Mistreatment may cause theflexiblehosestoburst.

• Do not apply heat. Some materials may react and ignite while in contact with some gases – particularly oxygen and nitrous oxide.

• Cylinders should always be secured with racks, chains, or straps. Unrestrained cylinders may fall over and damage or break off the cylinder valve which may propel the cylinder with great force.

• Oxygen manifolds and cylinders should be grounded. Static discharges and lightning may ignite materials in an oxy-genatmosphere,creatingafireorexplosiveforce.

• Welding should not be performed near nitrous oxide piping. Excessive heat may cause the gas to dissociate, creating an explosive force.

• Do not use leak test solution that contains ammonia. Solutions containing ammonia may cause brass tubing to crack.

• Always use oxygen compatible leak test solution on oxygen or nitrous oxide service equipment.

2 Part No.

Instruction Manual

PDSM350SS Series

C Common OSHA Occupational Safety & Health AdministrationCGA Compressed Gas Association PSIG Pounds per Square Inch GaugeFT-LBS Foot-Pounds SCFH Standard Cubic Feet per HourIN-LBS Inch-Pounds VAC Voltage, Alternating CurrentN/C Normally Closed VDC Voltage, Direct CurrentN/O Normally Open PCB Printed Circuit BoardNPT National Pipe Taper

3 - Disclaimer

BeaconMedæs shall not be liable for errors contained herein or incidental or consequential damages in connection with providing this manual or the use of material in this manual.

4 - Manufacturer Statement

The information contained in this instruction booklet has been compiled by BeaconMedæs, from what it be-lieves are authoritative sources, and is offered solely as a convenience to its customers. While BeaconMedæs believes that this information is accurate and factual as of the date printed, the information, including design specifications,issubjecttochangewithoutpriornotice.

5 - Introduction

BeaconMedæs manifold systems are cleaned, tested and prepared for the indicated gas service and are built following National Fire Protection Association and Compressed Gas Association guidelines. The manifold con-sists of a manifold box and two supply bank headers, one service and one reserve supply, to provide an un-interruptedsupplyofgasforthespecificgasapplication.Themanifoldboxisdesignedandbuiltwithfeaturesproviding automatic switchover from the depleted “Service” supply bank to the “Reserve” supply. Pressure gauges, optional alarm signal connections and lights show system status and alert the need to replace deplet-ed cylinders. Features of the automatic system include an adjustable line regulator, hoses with check valves, rigid wall-mounted headers and complete mounting hardware.

2 - Abbreviations

3Part No.

Instruction Manual

PDSM350SS Series6 - DescriptionThe PDSM350SS Series Pressure Differential Switchover Manifolds are designed to provide a continuous sup-ply of gases from liquid cylinders (gas withdrawal). The system automatically changes from a depleted bank of cylinders in service to the full reserve bank without an interruption of gas supply. A simple rotation of the primary bank knob resets the unit once the depleted bank of cylinders has been replaced. The standard outlet regulator maintains a constant line pressure, even during the switchover process.OPTIONAL ALARMInternal pressure switches, two normal pressure green lights, a low bank pressure red light and a buzzer indi-cate low bank pressure and the need to replace depleted cylinders.

4 Part No.

150 PSI RELIEF VALVE

(1/2” M.NPTGAS OUTLET(1/2” F.NPT)

OPTIONALALARM BOX

ALARM BOXPOWER

TRANSFORMER

400 PSI THERMAL EXPANSION RELIEF VALVE(1/4” M.NPT)

ALARM BOX CABLE (48-INCH LONG)

DELIVERY PRESSURE GAUGE (0-200 PSI)

DELIVERY PRESSURE ADJUSTMENT KNOB

PRIORITY BANK SELECTOR

SUPPLY BANK PRESSURE GAUGE (0-400 PSI)

ALL STAINLESS STEEL FLEXIBLE HOSE (60-INCH LONG)


DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE

NORMALPRESSURE

NORMALPRESSURE

Empty When Not Lit

Empty When Not Lit

LOW PRESSURE ALARM

SILENCE

LEFTBANK

RIGHTBANK

ALARM BOX FOR TWO CYLINDER BANKS

Instruction Manual

PDSM350SS Series6 - Ordering Information

PDSM350SS

Gas Inscribe

Inscribe

Inscribe

Inscribe

Inscribe

ArgonCarbon DioxideNitrogenOxygen

CGA 580CGA 320CGA 350CGA 540

No. of CylindersMust be an even number to have the same quantity of cylinders per side (2 cyl. each side = 4)

OptionsOutside InstallationUltra High Purity Cleaning

3RUHP

Installation HardwareWall mount bracketFloor Stand

WMFS

Hoses & PigtailsTefloncorehoseThermoplastic hoseAll stainless steel hoseRigid copper pigtailRigid stainless steel pigtail

TCHNCHSSHRCPSSP

Alarm Box InscribeManifold with alarm boxManifold without alarm box

ABLeave Blank

8 - General InstructionsManifolds should be installed in accordance with guidelines stated by the National Fire Protection Association, the Compressed Gas Association, OSHA, and all applicable local codes. The carbon dioxide and nitrous oxide manifolds should not be placed in a location where the temperature will exceed 120°F (49°C) or fall below 20°F (-7°C). The manifolds for all other gases should not be placed in a location where the temperature will exceed 120°F (49°C) or fall below –20°F (-29°C). A manifold placed in an open location should be protected against weather conditions. During winter, protect the manifold from ice and snow. In summer, shade the manifold and cylinders from continuous exposure to direct rays of the sun. The manifold should be located in a clean, well ventilated area which is free of oil and combustible materials.Leave all protective covers in place until their removal is required for installation. This precaution will keep moisture and debris from the piping interior, avoiding operational problems.All safety relief valves should be piped/vented to an outside location.

5Part No.

Instruction Manual

PDSM350SS Series

Gas Refer to Part Matrix NumberMaximum Inlet Pressure 350 PSIGFlow Cv = 0.06Operating Temperature -40oF to 100oFPressure Gauge Size 2-1/2” DialInlet Connection GasSpecificCGAConnection(RefertoPartNumberMatrix)Outlet Connection ½” F.NPTAudible and Visual Alarm Optional (Refer to Alarm Box Instruction Manual)Header ½” Nominal Pipe Size (0.840” Outside Pipe Diameter)Power Requirement Optional Alarm Box: 110 VAC, 1 Amp. (power outlet)Flexible Hose Length Liquid Cylinders: 60 inches or 72 inches

9 - Specifications

Inlet Pressure Gauge 0-400 psig (Standard)0-600 psig (for High Pressure Liquid Cylinder Models)

Outlet Pressure Gauge 0-200 psig (Standard)0-600 psig (for High Pressure Liquid Cylinder Models)

Outlet Pressure Range 10-100 psigSwitchover Pressure 110-120 psig (Approx.)Economizer 200 psigAlarm Set Point (Both Banks) 125 psig Decreasing (Approx.)Pressure Relief Valve 150 psig

10 - Specifications

The above mentioned settings will vary depending upon which PDSM Series Automatic Switchover manifold is purchased. Thespecificsettingsofeachpieceofpurchasedequipmentareindicatedontheirrespectivenametags.

6 Part No.

Instruction Manual

PDSM350SS Series

11 - Dimensions

16”

7”

14”

25-3/4”

35-3/4”

40-3/4”


DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE

7Part No.

Instruction Manual

PDSM350SS Series

12 - Standard & Custom ConfigurationsName TagEach piece of equipment bears a nametag telling you important information about:• Gas service• Alarm set points• Pressure settings• Year of manufacture• Model numberFlexible HosesFlexible hose/rigid pigtails selection is critical to get the best performance from your manifold. Weofferfivetypesofhoses:• Thermoplastic Hoses• TeflonCoreHoses• Stainless Steel Hoses• Copper Rigid Pigtails• Stainless Steel Rigid PigtailsFor additional safety, stainless steel hoses are available with:• Armor guardAs a standard feature, each hose has:• A check valve in the CGA nippleFinally, we offer three cylinder hose connections (all CGA / gas related)• Standard CGA nut & nipple• Quick connects (zip nuts)• Hand tight nuts

13 - Oxygen Service Equipment

All oxygen service equipment made by BeaconMedaæs is cleaned as per the requirements of CGA G-4.1-1996.TheflexiblehosesinstalledonoxygenservicedischargingstationsareTefloncore,stainlesssteeloverbraid with brass end connections. Also available for oxygen service are copper rigid pigtails with brass end

CAUTIONRemove all protective caps prior to assembly.

The protective cap may ignite due to heat of recompression in an oxygen system.

8 Part No.

Instruction Manual

PDSM350SS Series

14 - Installation

The PDSM350SS Series Manifolds come standard with two header bars. The cylinders are con-nectedtotheheaderbarsviahosesorrigidpigtails.Thefirststepistoinstallthemanifoldbox.Thesecondstepistoinstalltheheaderbars.Unlessotherwisespecified,thehosesarefactoryinstalledtothe header bars.

1. MANIFOLD BOX Securely mount the mounting bracket to a wall or stand. The manifold box should be located such that the headers

areatapproximately64inchesfromthefloor.

2. Screw the mounting bracket to the supporting wall.

Recommended Screw Types(to be supplied by the installer)

Wood Screws

Drywall Screws with Self-Drilling Drywall Anchors

Self TappingMetal Screws

1/4” Ø are requiredSCREW

SCREW

SCREW

SCREW

9Part No.

FLOOR

64”

DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


Instruction Manual

PDSM350SS Series

3. Align the manifold box with the mounting bracket. The two upper knurled nuts should easily slide into their corre-sponding slot on the mounting bracket. Then the stud should swiftly insert itself into its corresponding hole located on the lower part of the mounting bracket. Return the washer and the mounting nut to the threaded stud so that the control box is permanently mounted to its corresponding bracket.

THREADED

STUD

KNURLED NUTKNURLED NUT

1. HEADER BARS Align the headers to the union on each side of the manifold box. Using a level, mark the placement of the mounting

brackets while maintaining a horizontal plane.

10 Part No.

MANIFOLD BOX

SPIRIT LEVELHEADER BAR

DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE

GAS MANIFOLD SYSTEMSNORMAL

PRESSURENORMAL

PRESSURE

Empty When Not Lit

Empty When Not Lit

LOW PRESSURE ALARM

SILENCE

LEFTBANK

RIGHTBANK

ALARM BOX FOR TWO CYLINDER BANKS

Instruction Manual

PDSM350SS Series

2. Drill a hole in the supporting wall or stand. By using the proper screws (provided by installer), fasten the mounting bracket to the wall or stand.

U-Bolt

Header PipeBracketWasherNut

Recommended Screw Types(to be supplied by the installer)

Wood Screws

Drywall Screws with Self-Drilling Drywall Anchors

Self TappingMetal Screws

1/4” Ø are required

3. The mechanical connection between the header bars and their respective inlets to the manifold box is compression type.

DELIVERY PRESSURE


LEFT BANK PRESSURERIGHT BANK

PRESSURE

DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE

GAS MANIFOLD SYSTEMSGAS MANIFOLD SYSTEMSTIGHTEN FIRMLY BY HAND

TIGHTEN 1/8 TO 1/4 TURN MAX

HOLDFig. A Fig. B

The connection between the header bars and their respective inlets to the manifold box are compression type (aka Swagelok type connection). Although the header bars have been shipped separate from the manifold box, the two header-to-manifold-inlet connections have been made and tested at the factory. That means, the compression nuts have been pre-swaged. Please follow carefully the following simple installation instructions:

Fig. A - The compression nut must be very easy to tighten by hand. You should be able to make at least two turns be-forethenutstops.Ifthenutisgrindingorisdifficulttoturnbyhand.Theheaderbarisprobablynotlinedupproperlyor there is debris in the connection. Resolve the situation and re-make the connection.

Fig. B - Once you have tightened the compression nut properly to its corresponding male body, using a pipe wrench tighten the compression nut to the body (about 1/8 to a ¼ of a turn maximum). Again, this connection has been pre-swagedsodonotovertighten(thatwilldamagethefittingspermanently).Whentighteningthenut,useasecondpipewrenchtoholdthefittingonthemanifoldsideasshownontheschematicabove.

TECHNICAL TIP - How to Repair a Leaky Compression FittingThefirstthingtodowhenacompressionfittingisleakingistode-pressurizetheassembly,disassemblethejoint,and,witha

cleanedpapertowelorrag,wipeoutanydebristhatwouldbelocatedbetweenthefemalefittingandthetubestub.Then,remakethatjointbytighteningtheconnectionfirstbyhandandthenusingpipewrenches.Re-pressurizetheconduitandcheckforleaks

withasoapysolution.Re-tightenifnecessarywithnopressure.Nevertightenacompressionfittingunderpressure.

11Part No.

15 - Plumbing

Instruction Manual

PDSM350SS Series

Inhighpuritypipinginstallations,thequalityoftubingandfittingsareofparamountimportance.Therefore,thepipinginstaller should be familiar with and experienced in such critical applications. Hereunder is a list of important points to consider:• Privilegestainlesssteeltubingovercopper,andcopperoversofttubingsuchasTeflonornylon.• Always verify material compatibility with the service gas.• A good piping network is always protected against overpressure with a safety (pressure) relief valve.• Always pipe the safety relief valves to a safe location.• A valve (ball type or diaphragm type) should be installed near the PDSM Series outlet line regulator.• The best type of valve you can install is the diaphragm valve. They have a much better external leak rate than ball

valves.• If you have to install a ball valve, select an instrument ball valve and avoid using medical ball valves.PIPING THE PRESSURE RELIEF VALVES

There are three (3) pressure relief valves on a PDSM350SS manifold: one per header bar and one at the manifold outlet. These three pressure relief valves can be manifolded together to a common vent pipe. The following design and installation criteria shall be followed:

• The size of the piping connected directly to the pressure relief valve shall not be smaller than the size of the pressure relief valve itself. If we take the example below, the header bar PRV’s are ¼” M.NPT. The piping shall not be smaller than ¼” NPS. Similarly, the manifold outlet PRV is ½” M.NPT. The vent piping directly connected to this ½” M.NPT shall not be smaller than ½” NPS.

• Themainventpipecollectingtheindividualventpipesshallnotcreatebackfloworbackpressure.Therefore,itcannotbesmallerthan the total surface area of all piping connected to it. In our example, we have two (2) 1/4” NPS pipes and one (1) ½” NPS con-nected to the main vent pipe. The main vent pipe should not be smaller than ¾” NPS or should be preferably 1” NPS.

• Vent gases to the outside atmosphere and in an area away from personnel.• Be sure that venting and disposal methods are in accordance with Federal, State, Provincial and local requirements.• Locate and construct vent lines to prevent condensation or gas accumulation.• Be sure the vent outlet cannot be obstructed by rain, snow, ice, insects, birds, etc.• Do not inter-connect vent lines; if more than one vent is needed, use separate lines.• Vent pipe discharge outlets shall be far away from any building air intake louvers so that the vented gas does not return into the

building air supply.• If the vent piping is brazed, only high temperature melting point brazing material shall be used (therefore soldering is prohibited).• The piping material(s) shall be compatible with the gases being vented.• IT IS EXTREMELY IMPORTANT TO INSTALL UNIONS WHEN PIPING THE PRESSURE RELIEF VALVES.

12 Part No.

HEADER BAR PRV1/4” M.NPT

UNION

REDUCEROUTLET PRV1/2” M.NPT

UNION

UNION

REDUCER

OU

TSID

E W

ALL

VENT TOA SAFE

LOCATION

DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


Instruction Manual

PDSM350SS Series

DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


Step 1Remove female connectorfrom the tube stub adaptor

Step 2Install the process pipe to

the female connector

Step 3Install this new assembly to

the tube stub adaptor

Step 4Tighten by hand the compression nut

until you can’t turn it anymore

HOLD TIGHTEN

1/8-1/4 TURN


DELIVERY PRESSURE

LEFT BANK PRESSURE


RIGHT BANK PRESSURE

Step 5Using two wrenches, tighten the nut for about 1/8-turn to ¼-turn only.

PIPING THE MANIFOLD GAS SERVICE OUTLETThe manifold outlet is ½” F.NPT. It consists of two parts making a union: a tube stub adaptor and a female connector. This connection has been pre-swaged and pressure tested at the factory. The gas service piping can be connected directly to the manifold outlet as described below.

13Part No.

Instruction Manual

PDSM350SS Series

Source Valve Installation - The PDSM350SS does not come standard with an outlet valve (aka source valve). We strongly recommend to install a source valve directly to the manifold outlet. As mentioned previously in this manual, the best possible valve you can use as an outlet valve is a diaphragm valve. Should you decide to go with a ball valve, we recommend two (2) installation sce-narios:• GOOD: High purity ball valve connected directly to the manifold union• BETTER: A TIK Series Tie–In Kit also connected directly to the manifold union.

Outlet (Source) Valve Installation

BV2000 SeriesHigh Purity Ball valve

HIGH PURITY VALVE(Sold Separately)

MANIFOLD OUTLET(1/2” F.NPT) THIS IS A UNION

(Compression Fitting) MANIFOLD OUTLET(1/2” F.NPT) THIS IS A UNION

(Compression Fitting)

HIGH PURITYTIE-IN-KIT

TIK SERIESHigh Purity Tie-In Kit

GOOD BEST

TO P

RO

CE

SS

TO P

RO

CE

SS

DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


14 Part No.

LIQUID CYLINDER FLOW DIAGRAM

WHAT’S IMPORTANT TO KNOWInternal Vaporizer The internal vaporizer can convert cryogenic liquid to gas up to 350 SCF over a period of 60 minutes. For carbon dioxide, this vaporizing capacity is 100 SCF. If you overshoot the internal vaporizer capacity, cryogenic liquid will come out of the gas use valve (instead of gas).Gas Use Valve The gas vaporized by the internal vaporizer comes out from the gas use valve.Pressure Control Valve The end user must open valve 3 to allow the liquid cylinder to properly regulate its internal pressure.Internal Pressure If you have two (2) liquid cylinders manifolded together and each liquid cylinder is isolated by a check valve (which is the case for most manifolds). Both liquid cylinders will have different pressure and, therefore, they will not empty equally.

Instruction Manual

PDSM350SS Series

The goal of this section is not to explain how a liquid cylinder works but to give you enough informa-tion as to how to take full advantage of your PDSM350SS manifold. Below is some basic information as to how a liquid cylinder works.

16 - Possible Configurations

EXTERNAL COMPONENTS OF A TYPICAL LIQUID CYLINDER

1. Gas Use Valve Used for gas withdrawal2. Liquid Valve Used for cryogenic liquid withdrawal operations3. Pressure Control Valve Used to isolate (on/off) the pressure control regulator4. Vent Valve Used to vent pressure5. Pressure Control Manifold Used to automatically maintain pressure6. Pressure Gauge Indicates cylinder pressure7.* Combination Regulator MCR Used to automatically maintain pressure8. Pressure Relief Valve Used to limit pressure in the liquid cylinder9. Liquid Level Gauge Used to approximate the liquid contents of the liquid cylinder* Economizer Depending upon the liquid cylinder model, 7 is a combination of a pressure build regulator

and an economizer.

15Part No.

Instruction Manual

PDSM350SS SeriesSETUP NO. 1 – ONE LIQUID CYLINDER PER SIDE IS CONNECTED DIRECTLY TO THE MANIFOLD

DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


Connect Hoseto “Gas Use” Valveof Liquid Cylinder


350 SCFH 350 SCFHMax. Max.

GA

S

GA

S• It is the most common way of connecting liquid cylinders to the manifold.• Themaximumflowislimitedbythevaporizingcapacityoftheinternalvaporizeroftheliquidcylinder(350SCFHinthiscase).• The total storage capacity of this set up is one liquid cylinder per side.

SETUP NO. 2 – TWO OR MORE LIQUID CYLINDERS PER SIDE ARE CONNECTED DIRECTLY TO THE MANIFOLD (NO PRESSURE EQUALIZER HOSES)

DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE

GAS MANIFOLD SYSTEMS350 SCFHMax.

350 SCFHMax.

GA

S

GA

S

GA

S

GA

S



• It is a very common setup.• Evenifthereareseveralliquidcylindersconnectedtothemanifold.Themaximumflowisstilllimitedbythevaporizingcapacityof

each internal vaporizer of the liquid cylinder (350 SCFH in this case). It is extremely unlikely to have two liquid cylinders connected together at the exact same pressure and we can only assume that only one liquid cylinder will empty at a time.

• The total storage capacity of this set up is equal to the amount of liquid cylinders X their net content.

16 Part No.

Instruction Manual

PDSM350SS SeriesSETUP NO. 3 – TWO OR MORE LIQUID CYLINDERS PER SIDE ARE CONNECTED DIRECTLY TO THE MANIFOLD (WITH PRESSURE EQUALIZER HOSES)

DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


This hose is connectedto the “Vent” valve ofeach liquid cylinder

(both cylinders have nowthe same pressure)

This hose is connectedto the “Vent” valve ofeach liquid cylinder

(both cylinders have nowthe same pressure)

PRESSUREEQUALIZER

HOSE

PRESSUREEQUALIZER

HOSE

700 SCFHMax.Max.700 SCFH

GA

S

GA

S

GA

S

GA

S



• Thissetupshouldbeusedwhereanincreasedflowisrequiredevenforashortperiodoftime.• By connecting both gaseous head spaces together with a hose, both liquid cylinders have equal pressure (hence pressure equal-

izer hose). Because both liquid cylinders have the same pressure, both liquid cylinders are dispensing gas at the same time. Therefore,themaximumflowisequaltotheinternalvaporizercapacityofeachliquidcylinder(inourexample350SCFHvaporiz-ing capacity X 2 liquid cylinders = 750 SCFH total).

• The total storage capacity of this set up is equal to the amount of liquid cylinders X their net content.

17Part No.

Instruction Manual

PDSM350SS Series

DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE



CRYOGENICLIQUID

CRYOGENICLIQUID

EXTERNALVAPORIZERS


Theflowisnowlimited by the

vaporizer capacity

Theflowisnowlimited by the

vaporizer capacity

GA

S

GA

S

SETUP NO. 4 – ONE OR MORE LIQUID CYLINDERS PER SIDE ARE CONNECTED TO EXTERNAL VAPORIZERS

• Thissetupshouldbeusedwheremaximumflowisrequiredevenforashortperiodoftime.• In this example, we assume that external vaporizers have a vaporizing capacity of 1500 SCFH.• Cryogenic liquids convert to their gaseous state at a ratio of at least 750:1. That means 1 cu. ft. of liquid nitrogen equals to 750 cu.

ft. at normal temperature and pressure.• Withthissetup,theflowiseitherlimitedbytheexternalvaporizercapacityorbythemaximumflowcapacityofthemanifolditself.• The pressure of each bank is controlled by the pressure build regulator of each liquid cylinder.• The storage capacity is limited by the number of liquid cylinders connected to each bank (side).

CAUTIONCareshouldbeexercisedwhenbendingflexiblehosestoconnectthemtocylinders.

18 Part No.

Instruction Manual

PDSM350SS Series

* The switchover regulator is the one mounted with the throw lever. The throw lever is the priority bank selector located at the front of the manifold box.

17 - Theory of Operation

Pipeline Pressure Relief Valve

Delivery Pressure Gauge

Pipeline (Delivery) Pressure Regulator

Optional Pressure Switch for the Alarm Box

InletPressure Gauge

PresetRegulator

SwitchoverRegulator*

Economizer

Thermal Expansion Pressure Relief Valve

Cap for Future Expansion

Flexible Hose

CGA Nut & Nipple withIntegral Check Valve

Union

Outlet Port(1/2” F.NPT)

The automatic switchover manifold consists of a manifold box and two supply bank headers (one service and one reserve supply)toprovideanuninterruptedsupplyofgasforthespecificgasapplication.

The cylinder bank that supplies the piping system is known as the “Service” supply while the cylinder bank on standby is referredtoasthe“Reserve”supply.Gasflowsfromthecylinderthroughthepigtails,checkvalves,headers,andshut-offvalves into the left and right inlets of the control section.The PDSM Series manifolds feature optional vent valves which permit the venting of air that may have entered the system when a cylinder is replaced.

Gasflowsintothemanifoldboxandtothebankinletpressuregaugesviatubinglocatedontheleftandrightinletblocks.Thegasontherightbankflowsfromtherightbankinletblockintotheswitchoverregulatorwhilegasfromtheleftbankflowsintothefixedpressureregulator(thisregulatorislocatedinsidethemanifoldboxandcannotbeseenwiththecoveron).

Pressureisregulatedbythefixedregulatorandtheswitchoverregulatortothepressuresnotedintheadjustmentspeci-ficationtableofthismanual.Thefixedpressureregulatorissetmidwaybetweenthemaximumandminimumsettingsof the switchover regulator. The position of the primary bank selector handle (which is the switchover regulator handle) determines which bank is in service. When the primary bank selector handle is rotated clockwise (handle pointing right) theswitchoverregulatorsettingishigherthanthefixed-pressureregulatorsetting.Therefore,therightbankwillbein“Service” and the left bank will be in “Reserve.” When the regulator knob is rotated counterclockwise (handle pointing to theleft),theswitchoverregulatorsettingislowerthanthefixedpressureregulatorsetting.Therefore,theleftbankwillbein “Service.”

17Part No.

Instruction Manual

PDSM350SS Series

DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


DELIVERY PRESSURE


LEFT BANK PRESSURE

RIGHT BANK PRESSURE


PRIORITY: LEFT BANKRotate the lever counterclockwise to

draw gas from the left side first.The gas will come from that side first until the cylinder is depleted. The gas will then come from the right side even if the lever is still pointing to the left. Rotate the leverto the right side to make it the side you

want to draw gas from first.

PRIORITY: RIGHT BANKWhen the lever is pointing

to the right, the gas will comefrom the right bank until the

cylinder is depleted.

Whenthegaspressureontherightbankdropstothesetpressureofthefixed-pressureregulator,theleftbankwillstarttoflow.Con-versely,whentheprimarybankselectorhandleisrotatedcounterclockwise(pointingleft)thefixed-pressureregulatorsettingishigherthantheswitchoverregulatorsetpressure.Thereforegaswillflowfromtheleftbank.Whenrotatingtheprimarybankselectorhandleyouarealteringthepressuresettingoftheswitchoverregulatoraboveorbelowthefixed-pressureregulatorsetting.Iftheknobisnotrotated all of the way until it stops the manifold will not function correctly. The line pressure regulator further reduces the pressure to the finalpressuredeliveredtothegaspipingsystem.Thegasflowsfromthelineregulatoroutlettothepipelinedistributionsystem.

Liquid cylinder pressures for each bank are indicated on the two lower pressure gauges located on the manifold box. The “Service” sup-ply is indicated by the position of the control knob. The pipeline delivery pressure is indicated by the pressure gauge located at the top and middle portion of the manifold box.

After replacing empty cylinders and opening the liquid cylinder valves, the operator should then turn the priority bank selector knob to the opposite cylinder bank. This will make the partially used “Reserve” bank the “Service” supply and the newly installed cylinders will become the “Reserve” supply.

ABOUT THE ECONOMIZERThe PDSM350SS comes standard with two built-in economizer circuits.

BENEFITThe economizer’s purpose is to minimize product loss on the reserve bank. When the liquid cylinder on the reserve bank reaches 200 PSI. The economizer opens and the gas bypasses the primary regulators and feeds directly the line regulator until the pressure drops below 200 PSI.

IT COULD BE MISLEADINGEnd users sometimes notice that both banks are depleting at the same time thinking. That’s because the economizer uses the “reserve” bank as much “in use” bank. This is a clear indication that your gas consumption is too low to be fed by liquid cylinders.

NOISEBoth economizers are set to open at 200 PSI. When the economizer throttles around 200 PSI, the enonomizer may make some noise. This is a normal but temporary situation. The noise will stop as soon as the pressure of the reserve liquid cylinder drops under 200 PSI.

20 Part No.

Instruction Manual

PDSM350SS Series17 - Theory of Operation

1. ConnecttheliquidcylinderstotheflexiblehoseswiththeCGAnut/nippleendconnectionsprovided.

CAUTIONFlexible hoses containing check valves can be pressurized with system pressure only up to the check valve seat.Thethreadedjointsontheflexiblehose,includingtheCGAconnection,willnotbepressurizedwiththe

process gas.

2. Use the process gas to leak test and purge the system.3. Stand to the side of the manifold box and slowly open the “gas use” valve of each liquid cylinder (both

banks).4. On the manifold box, open the line regulator by turning the pressure adjusting knob clockwise until the de-

sired pressure is indicated on the outlet gauge.5. With cylinders connected, but with the cylinder valves closed, leak test all connections with either a soap

solution or a gas leak detector such as Snoop®.6. Turnthebankselectorhandletothedesiredprimaryside.Thiswillallowgastoflowfromthatsidefirst.7. Vent the system to atmospheric pressure. On the PDSM Series, close the line regulator by turning the knob

counterclockwise until it reaches the stop or until the knob turns with no resistance.

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Instruction Manual

PDSM350SS Series19 - Start Up and Checking Procedures1. Turn the primary bank selector handle to the right until you reach the end. S-L-O-W-L-Y open the right “gas use” liquid

cylinder valve (turn counter-clockwise to open). The right bank pressure gauge should show the full pressure of the right liquid cylinder bank. If your unit is equipped with an alarm box, the right bank green “Normal Pressure” light will turn on. If the green light is not illuminated, open the pressure build regulator valve of the liquid cylinder (it may take several minutes before the pressure builds up inside the liquid cylinder). At that point, because the left bank is still un-pressurized, the red light should still be illuminated.

2. S-L-O-W-L-Y open the “gas use” valve of the left liquid cylinder. The left bank pressure gauge will show the full pres-sure of the left cylinder bank. The left bank green “Normal Pressure” light will turn on. If the green light is not illumi-nated, open the pressure build regulator valve of the liquid cylinder (it may take several minutes before the pressure builds up inside the liquid cylinder). Both banks are now pressurized and the red light should be extinguished.

3. Createaslightflowofgasinthedeliverypipelinesystem.Closetherightliquidcylinder“gasuse”valvetosimulateadepleting right bank. Observe the following:

The right bank gauge pressure slowly falls and the manifold box automatically switches over to the left bank when the pressure reaches the switchover set pressure. Observe the following:

• Deliverypressureremainsconstant. • Green“NormalPressure”lightisturnedoff. • Red“LowPressure”lightturnson. • Buzzerturnson. • Anyremotealarmsshouldbeactivatedatthistime.4. S-L-O-W-L-Y re-open the right bank “gas use” cylinder valve. Observe the following: • Rightbankpressuregaugereturnstofullpressure. • Green“NormalPressure”lightturnson. • Red“LowPressure”lightturnsoff. • Buzzershutsoff. • Anyremotealarmsshouldbecancelled.

5. Turn the primary bank selector handle to the left and repeat steps 3 and 4 of the procedure to simulate an empty left bank.

20 - Cylinder Replacement

1. Shut off all valves on the depleted liquid cylinder(s).

2. S-L-O-W-L-Yloosenandremovetheflexiblehoseconnectionsfromthedepletedliquidcylinder(s).

3. Remove the depleted liquid cylinder(s).

4. With the valve outlet pointed away from you or anyone else, slowly open each liquid cylinder “gas use” valve slightly to blow out any dirt or contaminants which may have become lodged in the liquid cylinder valve.

5. Place and secure the full liquid cylinder(s) into position using chains, belts, or cylinder stands as required.

6. Connecttheflexiblehose(s)totheliquidcylinder“gasuse”valve(s)andtightenwithawrench. DO NOT OVERTIGHTEN.

7. S-L-O-W-L-Y turn each liquid cylinder “gas use” valve until each cylinder is fully open.

8. If the manifold is equipped with the optional alarm box, observe the following conditions: • Thered”LowPressure”lightturnsoff,andthegreen“NormalPressure”lightturnson.

9. The manifold supply bank is now replenished. Turn the primary bank selector handle to the opposite bank to indicate the service bank. This will place the new cylinders in “reserve.”

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Instruction Manual

PDSM350SS Series21 - Line Pressure AdjustmentThe delivery line pressure (top and center pressure gauge) can be increased by turning the line regulator knob, located in the middle of the control panel, clockwise, or decreased by turning the line regulatorknobcounterclockwise.Todecreasethepipelinepressure,theoperatormustcreateaflowdownstream of the line regulator.

22 - General Maintenance

CAUTIONDo not use leak test solution that contains ammonia.

Solutions containing ammonia may cause brass tubing to crack.

1. Main control section a) On a daily basis, maintain a record of the line pressure b) On a monthly basis: 1) Check regulators and valves for external leakage. 2) Check valves for closure ability c) On an annual basis: 1) Check relief valve pressures 2) Check regulator seats

2. Manifold header a) On a daily basis, observe nitrous oxide and carbon dioxide systems for cylinder frosting and surface condensation.

Should excessive condensation or frosting occur it may be necessary to increase the manifold capacity. b) On a monthly basis: 1) Inspect valves for proper closure. 2)Checkcylinderflexiblehosesforcleanliness,flexibility,wear,leakage,andthreaddamage.Replacedamaged flexiblehosesimmediately.

3) Inspect flexible hoses check valves for closure ability. c) Every 4 years 1)Replaceallflexiblehoses

23 - Shutdown

WARNINGHazardous gases must be discharged into a safety vent. Be sure to use a venting procedure that is

environmentally acceptable and complies with Federal, State, Provincial and local requirements.

1. Close all cylinder valves.

2. Vent the system pressure to 0 psig. If a hazardous gas is used, purge the entire system with clean, dry nitrogen gas. Continue purging until the hazardous gas level in the system is below the TLV for the gas.

3. Close all system valves by turning the knobs fully clockwise.

4. On the PDSM Series, close the line regulator by turning the knob counterclockwise until it reaches the stop.

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Instruction Manual

PDSM350SS Series

24 - Troubleshooting

SYMPTOM PROBABLE CAUSE REMEDY OR CHECKLOSS OF CYLINDER CONTENTSAudible or inaudible gas leakage(Unknown Origin)

Leakage at manifold piping connection

Leakage in downstream piping system

Leakage at cylinder valve

Gauge leaks

Regulator leaks

Tighten, reseal or replace

Repair as necessary

Replace cylinder

Reseal or replace

Repair or replaceVenting at relief valves Line regulator setting too high

Overpressure due to creeping or faulty regulation by primary regulator

Overpressure due to creeping or faulty regulation by line regulator

Regulator freeze-up (nitrous oxide or carbon dioxide)

Setdeliverypressuretospecifications

Replace regulator seat and nozzle components

Replace regulator seat and nozzle components

Reducetheflowdemandorincreasethe number of supply cylinders. Tighten bonnet.

Gas leakage around regulator body or bonnet

Loose bonnet

Diaphragm leak on regulator

Tighten bonnet

Replace regulatorGas leakage around valve stem on master valve

Valve diaphragm leaks

Faulty valve

Tighten nut

Repair or replace valve

24 Part No.

Instruction Manual

PDSM350SS Series

SYMPTOM PROBABLE CAUSE REMEDY OR CHECKLOSS OF RESERVE BANK CONTENTSBoth banks feeding

Opposite bank feeding

Fixed-pressure regulator seat leak

Fixed-pressure regulator set to open at too high a pressure

Flow demand too high

Faulty primary regulator and/or fixed-pressureregulator

Replace regulator

Adjust intermediate regulator perspecifications

Reduceflowdemand

Replace regulator

Premature switchover to reserve bank


Leaks in the manifold system

Reduceflowdemand

Leak test, tighten, reseal or replace fittingsasnecessary

No switchover Fixed pressure regulator set to open at too high a pressure

Closed cylinder or shutoff valves

Fixed-pressure regulator defectiveEmpty reserve bank cylinder

Adjust intermediate regulatorperspecifications

Open Valves

Replace or repair regulatorReplace cylinder

PIPELINE DISTRIBUTIONPipeline not at desired pressure

Requiredgasflownotavailable

Line regulator not set correctly

Line regulator not set correctly


Readjust line pressure regulator

Readjust line pressure regulator

Consult factory

25 - Repairs

If the manifold or any part of the switchover leaks or malfunctions, take it out of service immediately. Repairs should be made only by BeaconMedæs with the special tools, test equipment and trained personnel required to make a safe repair. Tampering with switchover manifolds voids the warranty. Please contact BeaconMedæs to arrange for any necessary repairs.Repairs to switchover manifolds done after the initial warranty period has expired are chargeable to the cus-tomer. Upon receipt at the factory, the switchover manifolds will be inspected and you will be contacted with a repair cost estimate. No item will be repaired until approval is received. There will be an evaluation charge assessed for equipment not repaired. All repairs should be arranged through your BeaconMedæs supplier.NOTE: All equipment being returned must be purged of all hazardous materials using a clean, dry inert gas (e.g. Dry Nitrogen) prior to return.

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Instruction Manual

PDSM350SS Series27 - Warning

Our equipment is primarily intended for use in compressed gas systems. BeaconMedæs products are de-signed for use by persons technically trained in the proper use and safe handling of gas delivery systems. Due to the high pressure and hazardous gases employed in these processes, misapplication could result in injury or death. BeaconMedæs expressly warns against the sale to, or use of our products by, anyone other than pro-fessionally trained personnel. Do not use this equipment where pressures and temperatures can exceed those listedunderthe«Specifications»section.Through misuse, age, or malfunction, components used with inert, combustible, corrosive, toxic, or oxidizing gases can fail in various modes. The system designer is warned to consider the failure modes of all component parts used with the above mentioned gases and to provide adequate safeguards to prevent personal injury or damage to equipment in the event of such failure modes. Adequate safeguards can be, but are not limited to: •Pressurereliefdevicesadequatelypipedtoasafelocation; •Gasdetectiondevicesconnectedtoaproperwarningaudibleandvisualalarm; •Automaticshutoffvalvesand/ormanualshutoffvalveswithanemergencystoppushbutton; •Self-containedbreathingapparatus; •Pipelinepurgesystemwithinertgas; •Fireextinguishersand/orautomaticsprinklers.System designers must provide a warning to end users in the systems instructional manual if protection against a failure mode cannot be adequately provided for. It should be recognized that warnings are valid for any equipment, regardless of manufacturer, and are not restricted to equipment manufactured by BeaconMedæs. BeaconMedæs’s reputation for equipment quality performance is well established. We feel we have the additional obligation to provide information or warnings to customers to assist them in applying our equipment in a reasonable and safe manner.

28 - Design Changes

In line with our commitment to continuous improvement, BeaconMedæs reserves the right to make design modificationsordiscontinuemanufactureofanyequipmentwithoutpriornotice.

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Instruction Manual

PDSM350SS SeriesTrademarks used in our instruction manual include:Buna-N,Delrin,Kalrez,Teflon,Tefzel.Vespel,VitonandViton-A are trademarks of E.I. DuPont de Nemours & CompanyMonel is a trademark of Inco Alloys International, Inc.Kynar is a trademark of Atochem North America, Inc.Snoop is a trademark of Nupro CompanySwagelok is a trademark of Crawford Fitting CompanyHastelloy is a trademark of Union Carbide CorporationVCR is trademark of Cajon Company

LIMITED WARRANTYWARRANTY: The Seller expressly warrants that the products manufactured by it will be free from defects in material, workmanship and title at the date of shipment. This warranty is exclusive and is IN LIEU OF ALL IMPLIED OR STATUTORY WARRANTIES (INCLUDING WITHOUT LIMITATION, WARRANTIES AS TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR ARISING FROM COURSE OF DEALING OF USAGE OR TRADE) or any other express or implied warranties or representations. All claims under this warranty must be made in writing and delivered to the seller prior to the expiration of 1 year from the date of shipment from the factory, or be barred. Upon receipt of a timely claim, the seller shall inspect the item or items claimed to be defective, and seller shall, at its option, modify, repair, or replace free of charge, any item or items which the seller determines to have been defective at the time of shipment from the factory, excluding normal wear and tear. Inspection must be performed at the seller’s plant and in such event, freight for return-ing items to the plant shall be paid by Buyer. Seller shall have no responsibility if such item hasbeenimproperlystored,installed,operated,maintained,modifiedand/orrepairedbyanorganization other than the seller. Adjustment for products not manufactured by Seller shall be made to the extent of any warranty of the manufacturer or supplier thereof. The foregoing shall be the Seller’s sole and exclusive liability and buyer’s sole and exclusive remedy for any breach of warranty or for any other claim based on any defect in, or non-performance of, the products whether based on breach of contract or in tort, including negligence or strict liability.

BeaconMedæs1800 Overview DriveRock Hill, SC 29730 USATel.: 888.4MEDGAS (463.3427)www.beaconmedæs.com

Printed in U.S.A.November 2013

Instruction Manual: IM-PDSM350SS-3098

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