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gh2dl1sm-REV0714 Model GH2 Page 1

PRINCIPLE OF OPERATION

This pump is a 2:1 pressure ratio single acting pump powered by compressed

natural gas. The 2:1 ratio is achieved by simultaneously applying gas pressure

over a single end of each of two pistons connected in series by a shaft. The two

pressurized ends are those most distant from the pumped ﬂuid, with the force from

the gas pressure exerted in the direction of the pumped ﬂuid. The combined force is

transferred through to the single end of the piston nearer to the pumped ﬂuid—the

single piston end having an area equal to one-half that of the two “gas” ends—and

then through a ﬂuid cell to a single pumping diaphragm.

On this single acting pump the suction stroke is independent of all discharge

conditions and requires less gas pressure than the discharge stroke. The suc-

tion stroke is accomplished through a natural gas regulator which pressur-

izes the piston area in the rear cylinder adjacent to the intermediate bracket, while

simultaneously exhausting the other two piston areas: one in the front cylinder, adjacent

to the intermediate bracket, and the other behind the rear cylinder piston, adjacent to

the cap end.

OPERATION

The regulator is factory preset to 30 psi. After the pump is installed and in

operation, the operator should raise or lower the setting until maximum

performance is determined by trial and error. A setting which is too high will result

in excessively rapid and noisy operation, with a loss in performance and eventually

shortened pump life.

The hose assemblies deliver natural gas to the non-wetted portions of the pump,

and care should be taken that they are neither crimped nor cut.

INSTALLATION PROCEDURES

Position the pump as close as possible to the source of the liquid to be pumped.

Avoid long or undersize suction lines and use the minimum number of ﬁttings.

For permanent installation involving rigid piping, install short ﬂexible sections

of hose between the pump and piping. This reduces strains and permits easier

removal of the pump for service when required. Important: The pump must be

installed on a ﬂat, level surface. Use shims as neccessary.

NATURAL GAS SUPPLY

Do not connect the unit to a natural gas supply in excess of 125 PSI (8.61

bars). Install a shutoff valve in the gas supply line to permit removal of the unit for

servicing. When connecting a gas supply of rigid piping, mount a section of ﬂexible

line to the pump to eliminate piping strain. In permanent installations, a gas ﬁlter is

recommended.

FREEZING OR ICING OF EXHAUST

Icing of the gas exhaust can occur under certain conditions of temperature and

humidity on compressed gas power equipment. Icing is more likely to occur at high

discharge pressures.

MAINTENANCE AFTER USE

When the pump is used for materials that tend to settle out or transform from liquid

to solid form, care must be taken after each use or during idle time to remove them

and ﬂush the pump as required to prevent damage. In freezing temperatures the pump

must be completely drained when idle. This model must be tilted to allow the liquid from

the chambers to run out of the discharge port.

In the event of

diaphragm rupture,

pumped material may

enter the air end of

the pump, and be

discharged into the atmosphere. The air

exhaust must be piped to an appropriate

area for safe disposition.

WARNING

Before maintenance

or repair, shut off the

com-pressed air line,

bleed the pressure,

and disconnect the

air line from the pump.

The discharge line may be pressurized

and must be bled of its pressure.

WARNING

Before pump

operation, inspect all

gasketed fasteners

for looseness caused

by gasket creep. Re-

torque loose fasteners to prevent leakage.

Follow recommended torques stated in

this manual.

CAUTION

Read these safety

warnings and

instructions in this

manual completely,

before installation and start-up of the pump.

It is the responsibility of the purchaser to

retain this manual for reference. Failure to

comply with the recommendations stated

in this manual will damage the pump, and

void factory warranty.

Take action to prevent

static sparking. Fire

or explosion can

result, especially

when handling

flammable liquids.

The pump, piping, valves,

containers or other miscellaneous

equipment must be grounded.

WARNING

IMPORTANT

Designed to meet CSA Requirement 2:01 US for Natural Gas Operated Diaphragm Pumps

SERVICE AND OPERATING MANUAL

Model GH2

High Pressure

1:2 ratio Type 1

WARREN RUPP

IDEX AODD, Inc. • A Unit of IDEX Corporation • 800 N. Main St., P.O. Box 1568, Mansﬁeld, Ohio 44901-1568 USA

Telephone (419) 524-8388 • Fax (419) 522-7867 • www.warrenrupp.com

1 2 3 4 5 6 7 8 9

Résumé du contenu

Page 1 - Model GH2

gh2dl1sm-REV0714 Model GH2 Page 1PRINCIPLE OF OPERATIONThis pump is a 2:1 pressure ratio single acting pump powered by compressed natural gas. The

Page 2 - NATURAL GAS VALVE LUBRICATION

Model GH2 Page 2 gh2dl1sm-REV0714CHECK VALVE SERVICINGNeed for inspection or service is usually indicated by poor priming, unstable cycling, reduced

Page 3 - TROUBLE SHOOTING

gh2dl1sm-REV0714 Model GH2 Page 3move back and forth freely. This is most important when the gas supply is lubricated. If a lubricator is used, oil

Page 4

Model GH2 Page 4 gh2dl1sm-REV07141. Pump will not cycleA. Check to make sure the unit has enough pressure to operate and that the gas inlet valve is

Page 5

gh2dl1sm-REV0714 Model GH2 Page 5 ITEM TOTAL NO. PART NUMBER DESCRIPTION RQD. Repair Parts shown in bold face (darker) type are more likel

Page 6 - ITEM TOTAL

Model GH2 Page 6 gh2dl1sm-REV0714 ITEM TOTAL NO. PART NUMBER DESCRIPTION RQD. Repair Parts shown in bold face (darker) type are more likely

Page 7 - ITEM

gh2dl1sm-REV0714 Model GH2 Page 7AVAILABLE REPAIR PART KITSITEM NO. PART NUMBER DESCRIPTION Repair Parts Kit for EH2: 476-048-360 WETTED

Page 8 - Model GH2 Page 8

Model GH2 Page 8 11/04 USE OF Virgin PTFE DIAPHRAGM:When the PTFE diaphragm (item 64) is required, an outer plate

Page 9 - Declaration of Conformity

Signature of authorized personRevision Level: FPrinted name of authorized personDavid RoseberryDate of issueOctober 20, 2005TitleEngineering ManagerDa

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Sandpiper GH2 Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Pompes Sandpiper GH2. SANDPIPER GH2 User Manual Manuel d'utilisatio

Résumé du contenu

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