SHUTDOWN PROCEDURES
It is your responsibility to follow proper shutdown
procedures to prevent product damage.
4
It is your responsibility to:
• Regularly inspect and make necessary repairs to
product in order to maintain proper operation.
• Make sure that pressure and vacuum is released
from product before starting maintenance.
Flushing
Flushing this product to remove excessive dirt, foreign
particles, moisture or oil that occurs in the operating
environment will help to maintain proper vane
performance. If your pump is not getting the vacuum or
pressure level expected, flushing is required. Vanes will
stick when dirty and may cause pump to be noisy or
inefficient.
Use only Gast recommended Flushing Solvent or other
non-petroleum based flushing solvent. Do Not use
kerosene or ANY other combustible solvent to flush
product.
Check that all external accessories such as relief valves
and gauges are attached to cover and are not damaged
before re-operating product.
1. Disconnect electrical power supply.
2. Release all pressure and vacuum from pump.
3. Remove all accessories at the inlet and exhaust
ports.
4. Remove filter.
5. Start product. Place towel over exhaust port to
clean up solvent. If using liquid solvent, pour
several tablespoons directly into inlet port. If using
Gast recommended Flushing Solvent, spray solvent
for 5-10 seconds into inlet port.
6. Block the inlet port and draw a deep vacuum for
15-20 seconds. Release the vacuum.
7. Listen for changes in the sound of the motor. If
motor sounds smooth, go to next step. If motor
does not sound like it is running smoothly, repeat
steps 5 and 6 until you can hear a difference in the
operating sound of the pump.
8. Start the pump and let it run for 1 minute, then turn
pump off.
9. Replace all accessories at the inlet and exhaust
ports.
10. Replace filter before resuming operation.
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.
Clean filters when necessary by removing and washing
in a solvent or soap and water. After cleaning, dry with
compressed air to make sure all moisture is removed
before replacing filters.
Failure to do so may result in premature pump failure.
The Gast Manufacturing lubricated Vacuum Pumps and
Compressors 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 5 minutes without
plumbing.
3. Cover inlet port (vacuum side) and run pump for 1-3
minutes. Shut the pump down under vacuum.
4. This unit requires lubrication. Refill oil reservoir to
proper level before storage.
5. Be sure to plug open ports so dirt and other
contaminants do not enter the unit. It is now ready
for shutdown.
(12 pages)
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