Gast 1550 series, 3040 Series, 0204 series, 0440 series, 0740 Series Operation And Maintenance Manual
70-480 G405PL (Rev C)
OIL-LESS ROTARY VANE
VACUUM PUMP AND COMPRESSOR
OPERATION AND MAINTENANCE MANUAL
CONTENTS
General Information, Installation and Operation........................................................................................ 2
Inspection and Maintenance ....................................................................................................................... 3
1550 / 3040 Series Exploded View and Parts Ordering Information ......................................................... 4
0204 / 0440 / 0740 Series Exploded View and Parts Ordering Information .............................................. 5
Service Kit Installation and Service Facilities............................................................................................ 6
KEEP THIS DOCUMENT FOR FUTURE REFERENCE
1
This is the hazard alert symbol: 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 explanation of the three different
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
This pump is only to be used for the purpose of pumping
air and under no circumstances be used with any other
gases. The pump must not be used for the pumping of
fluids, particles, solids or any substance mixed with air,
particularly combustible substances likely to cause
explosions.
mDANGER
Do not pump flammable or explosive
gases, or operate the unit in an
atmosphere containing them.
mCAUTION The exhaust air of this pump can become
very hot. Do not direct exhaust air
towards property that is temperature
sensitive.
mCAUTION The pump is designed for air only. Do not
allow corrosive gases or particulate
material to enter the pump. Water vapor,
oil-based contaminants, or other liquids
must be filtered out.
Ambient temperature should not exceed 40°C (104°F).
For operation at higher temperatures, consult the factory.
Performance is reduced by lower atmospheric pressure
found at high altitudes. Consult a Gast distributor for
details.
Never lubricate this oil-less air pump. The sealed bearings are grease packed, and the service life of the carbon
vanes will be reduced by petroleum or hydrocarbon
products.
INSTALLATION
mWARNING To avoid risk of electrocution do not use
this product in an area where it could
come in contact with water or other
liquids. If exposed to the elements it must
be weather protected.
mWARNING Beware of any exposed movable parts.
Proper guards should be in place to
prevent severe personal injury of death.
mCAUTION Do not block the flow of cooling air over
the pump in any way.
Mounting the Pump
The pump may be installed in any orientation as long as
the flow of cool, ambient air over the pump is not
blocked. To reduce noise and vibration, mount to a stable,
rigid operating surface.
Plumbing
To prevent air flow restriction, use pipe and fittings that
are the same size or larger than the threaded ports of the
pump. The ports are marked “IN” and “OUT”. Be sure to
remove port plugs before operating unit.
Accessories
Intake and exhaust filters are external to the pump and
will provide adequate filtration for most applications.
Check filters periodically and replace when necessary.
Consult a Gast representative for additional filter recommendations. Install relief valves and gauges at the inlet or
outlet, or both, to monitor performance. Check valves
may be required to prevent backstreaming through the
pump.
Wiring
mWARNING Incorrect wiring can result in electric
shock. Wiring must conform to all
required safety codes and be installed by
a qualified person. Grounding is required.
All power to the motor must be deenergized and disconnected before
servicing.
Electric Motor Control
The motor must be protected against short circuit, overload and excessive temperature rise. Fuses, motor
protective switches and thermal protective switches
provide the necessary protection in these circumstances.
Fuses only serve as a short circuit protection of the motor
(wiring fault), not as a protection against overload. Fuses
in the incoming line should be chosen so as to be able to
withstand the starting current of the motor. Motor starters,
incorporating thermal magnetic overload, or circuit
breakers protect the motor from overload or reduced
voltage conditions. Selection of the correct overload
setting is required to provide the best possible protection.
Refer to the motor starter manufacturer’s
recommendations.
Electric Motor Connection
Refer to the motor name plate for wiring diagram. Be
sure that all dual-voltage motors are wired according to
your power source. If the motor fails to start or slows
down under load, shut the pump off and unplug it. Check
that the supply voltage agrees with the motor name plate.
Be sure the 3-phase motor turns in the proper direction of
rotation after installation. Turning in the wrong direction
will drastically reduce vane life.
2
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