© 2021, Gast Manufacturing
We reserve the right to make any alterations which may be due to any technical improvements
Printed in the USA
6
Part No. 70-7100 (Rev. A)
MAINTENANCE
WARNING
Electrical Shock Hazard
Disconnect electrical power supply before performing
maintenance on this product.
If product is hard-wired into system, disconnect electrical
power at the circuit breaker or fuse box before
performing maintenance on this product.
Failure to follow these instructions can result in death, fire,
or electrical shock.
WARNING
Injury Hazard
Product surfaces become very hot during operation,
allow product surfaces to cool before handling.
Air stream from the product may contain solid or liquid
material that can result in eye or skin damage, wear proper
eye protection.
Clean this product in a well-ventilated area.
Failure to follow these instructions can result in burns,
eye injury, or other serious injury.
It is your responsibility to:
• Regularly inspect and make necessary repairs to product
in order to maintain proper operation.
• Make sure that pressure is released from product before
starting maintenance.
Check intake and exhaust filters after first 500 hours of
operation . Clean filters and determine how frequently filters
should be checked during future operation . This one procedure
will help to assure the product’s performance and service life .
1 . Disconnect electrical power supply to unit .
2 . Vent all air lines .
3 . Remove filter cover .
4 . Check filter element . Replace filter if element is covered
with contamination or shows signs of increasing differential
pressure .
5 . Reinstall filter element and filter cover .
Check that all external accessories such as relief valves and
gauges are attached to cover and are not damaged before re-
operating product .
SHUT DOWN
It is your responsibility to follow proper shutdown procedures
to prevent product damage. NEVER ADD OIL TO THIS OIL-LESS
PUMP.
Proper shutdown procedures must be followed to prevent
pump damage . Failure to do so may result in premature pump
failure . Gast Manufacturing Rocking Piston Oil-Less Pumps are
constructed of ferrous metals or aluminum which are subject
to rust and corrosion when pumping condensable vapors such
as water . Follow the steps below to assure correct storage and
shutdown between operating periods .
1 . Disconnect plumbing .
2 . Operate product for at least five minutes without plumbing .
3 . Run at maximum vacuum for 10 to 15 minutes .
4 . Repeat step 2 .
5 . Disconnect power supply .
6 . Plug open ports to prevent dirt or other contaminants from
entering product .
SERVICE KIT INSTALLATION
WARNING
Electrical Shock Hazard
Disconnect electrical power supply before performing
maintenance on this product.
If product is hard-wired into system, disconnect electrical
power at the circuit breaker or fuse box before
performing maintenance on this product.
Vent all air lines to release pressure or vacuum.
Failure to follow these instructions can result in death, fire,
or electrical shock.
Gast will NOT guarantee field-rebuilt product performance.
For performance guarantee, the product must be returned to a
Gast Authorized Service Facility.
