2
This is the hazard alert symbol:
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. 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:
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DANGER
Severe personal injury or death will
occur if hazard is ignored.
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WARNING
Severe personal injury or death can
occur if hazard is ignored.
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CAUTION
Minor injury or property damage can
occur if hazard is ignored.
GENERAL INFORMATION
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DANGER
Do not pump flammable or explosive
gases or operate the unit in an
atmosphere containing them. Use only
in a well-ventilated area.
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CAUTION
Required ambient temperature is 0˚ to
40˚C (32˚F to 100˚F). For operation at
higher temperatures, consult the factory.
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CAUTION
All electrical products generate heat. Do
not touch unit during operation or until it
has cooled.
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CAUTION
Do not block flow of cooling air over unit
in any way.
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CAUTION
Do not operate units above recommended
pressure or vacuum duties. To do so will
damage unit.
This rotary unit is a precision product, with specified clearances
of only .002" at top and .0025"-.0035" at ends of rotor. Vanes
compensate for their own wear and should supply 5,000
-15,000 hours of operation, depending upon application.
Remember that it is designed for pumping only clean, dry air.
Protect it against entry of dirt and excessive moisture.
INSTALLATION
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WARNING
Disconnect power source before installing
and/or servicing. Failure to do so could result
in electrical shock, personal injury or death.
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WARNING
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.
To reduce noise and vibration use shock mounts, or a
vibration-isolated mounting surface that will not resonate.
Plumbing
To prevent flow restriction, use pipe and fittings that are
same size as or larger than threaded ports. Note that ports
are not designed to support plumbing.
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WARNING
Improper wiring can result in electric shock.
All power to motor must be de-energized
and disconnected before servicing.
Wiring
Refer to motor nameplate for wiring diagram. Building
must conform to all required safety codes. Check that
voltage at power outlet agrees with motor nameplate.
Lubrication
Proper lubrication is necessary for normal service life. Vanes
ride on a film of oil that fills clearances and provides a seal.
Gast lubricating oil is available in convenient quart containers
from the factory or Gast representatives (order part #AD220).
A high-detergent 10-wt. automotive engine oil may be used.
In locations over 100˚F, use high-detergent 20-wt. oil.
Oil is automatically metered during unit operation, but oil
supply in siphon jar must be monitored and replenished as
needed. Refer to exploded view. Keep jar filled to fill line on
jar. Temperatures, operating vacuum and/or pressure, and
oil level determines lubrication rate.
Moisture Trap
Moisture, either liquid or vapor, will damage unit.
Install a trap if moisture could be drawn into unit.
OPERATION
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WARNING
Solid or liquid material exiting unit can
cause eye or skin damage. Keep away
from air stream.
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WARNING
Some models are equipped with glass jars.
If an alternate material is not used, proper
measures should be taken to guard against
fragmenting of breaking of glass. If hazard
is ignored severe personal injury or death
can occur.
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CAUTION
Do not allow corrosive gases or particulate
material to enter unit. Water vapor, oil-based
contaminants,
or other liquids must be
filtered out. Contact the factory when using in
an application other than air.
Performance is reduced by lower atmospheric pressure
at high altitudes. Consult a Gast distributor for details.
Performance Parameters
20" Hg Max. Vacuum (27" intermittent*)
1.3 CFM open flow.
20 PSI Max. Pressure (25 PSI intermittent*)
1.3 CFM open flow.
Intermittent duty is defined as: 10 minutes or less ON,
and 10 minutes or more OFF.
