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5D SERIES MINIATURE PUMP

OPERATION and MAINTENANCE

INSTRUCTION MANUAL

Contents:

General Information, Installation...........1

Operation, Wiring, and

Maintenance Inspection........................2

Exploded View and Parts Ordering

Information............................................3

Troubleshooting, and

Service Facilities...................................4

70-2500 G446BPL (Rev. C)

This is the hazard alert symbol: m When you see

this symbol be aware that personal injury or

property damage is possible. The hazard is

explained in the text following the symbol.

Read the information carefully before proceeding.

The following is an explaination of the three dif-

ferent types of hazards:

mDANGER Severe personal injury or death

will occur if hazard is ignored.

mWARNING Severe personal injury or death

can occur if hazard is ignored.

mCAUTION Minor injury or property damage

can occur if hazard is ignored.

GENERAL INFORMATION

mDANGER To prevent explosive hazard, do not

pump combustible liquids or

gases, or operate the pump in an

atmosphere containing them. Use

only in a well ventilated area.

m CAUTION Required ambient temperature is

-10 F to 150 F. For operation at

temperatures outside this range,

consult the factory.

Performance is reduced by lower atmospheric

pressure at high altitudes. Consult a Gast dis-

tributor for details. Never lubricate this oil-less

pump. The sealed bearings are grease-packed.

The service life of the diaphragm and valve will be

reduced by petroleum or hydrocarbon products.

INSTALLATION

mWARNING Beware of any exposed movable

parts. Proper guards should be in

place to prevent severe personal

injury.

mCAUTION Do not block the flow of cooling air

over the pump in any way.

MOUNTING

To reduce noise and vibration use shock mounts

or a vibration-isolated mounting surface. Do not

block the flow of cooling air over the unit in any

way.

PLUMBING

To prevent air flow restriction, use pipes and

fittings of the same size or larger than the barbed

ports. Note that the ports are not designed to

support plumbing.

KEEP THIS DOCUMENT FOR FUTURE REFERENCE

1 2 3 4

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Pagina 1 - INSTRUCTION MANUAL

5D SERIES MINIATURE PUMPOPERATION and MAINTENANCEINSTRUCTION MANUALContents:General Information, Installation...1Operation, Wiring, andMainten

Pagina 2

RELIEF VALVES AND GAUGESInstall gauges in the lines to monitor per-formance. A relief valve can be installed at theinlet or outlet, or both. Consult

Pagina 3 - DC WIRING

MAINTENANCE conti.-Place the valve in the valve plate pocket so thatthe holes in the valve fit over the correct pins inthe valve plate.-Assemble the h

Pagina 4 - TROUBLESHOOTING GUIDE

SYMPTOM POSSIBLE CAUSE POINT TO CHECK REMEDYWon’t Start•Electrical Connection•Dirty Muffler•Wrong/Low Voltage•Pressure/Vacuum onHead•Ensure electrical

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