Gast 1423 Series Oilless Vacuum Pumps and Compressors - Manual (Page 3)

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. There are 2 options for this operation.
If Option 1 does not remedy your problem, go on to
Option 2.
Use only Gast recommended flushing solvent or
other non-petroleum based flushing solvent. Do
Not use kerosene or ANY other combustible
solvents to flush product.
Option 1
You will need 2 pipe nipples at least 4 inches long with
1/4” NPT for 0323 and 0523 products, or 3/8” NPT on
one end for 0823 and 1023 products. No nipples are
needed if the unit does not have a muffler box.
1. Remove filter and muffler cap (#9).
2. Remove 5 bolts. Use a small hammer to tap on
muffler box to remove it. Attach pipe nipples
where muffler caps were removed.
3. Start product and add flushing solvent to the inlet
port. If using liquid solvent, pour several
tablespoons directly into the inlet port. If using Gast
recommended spray solvent, spray for 5-10
seconds into inlet port. Place towel over exhaust
to clean up solvent.
4. Plug inlet port for 20-30 seconds. Listen for
changes in the sound of the pump. If pump sounds
smooth, go to next step. If pump does not sound
ike it is running smoothly, installing a Service Kit
will be required (See Service).
5. Release vacuum.
6. Repeat steps 3-5 three or four times.
If Option 1 is not successful, remove the end plate
and examine.
MAINTENANCE
Electrical Shock Hazard
Disconnect electrical power supply cord 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.
Injury Hazard
Product surfaces become very hot during
operation,
allow product surfaces to cool before handling.
Air stream from product may contain solid or
liquid
material that can result in eye or skin damage,
wear proper eye protection.
Flush this product in a well ventilated area.
Failure to follow these instructions can result in
burns, eye injury or other serious injury.
General Maintenance
1. Remove end cap and filters. Inspect filters for
rips,tears, cuts, brittleness and excessive foreign
material.
2. Clean filters if in good condition with
compressed air. Re-inspect for wear conditions.
Set filters aside.
3. Check filter/muffler (#11) for compacted debris. If
debris is present, replace filter/muffler.
4. Check condition of O-ring. It should be soft and
flexible. Replace if it is not.
5. Remove and inspect muffler box. Clean box. Set
box aside. (Not all models have a muffler box.)
6. Check gasket for cracks or tears. Install new
gasket
if any cracks or tears appear. Replace gasket.
7. Replace muffler box.
8. Reinstall filters or install new filters if required.
Reinstall end cap.
It is your responsibility to operate this product at
recommended pressures or vacuum duties and
room ambient temperatures.
Start Up
If motor fails to start or slows down significantly under
load, shut off and disconnect from power supply. Check
that the voltage is correct for motor and that motor is
turning in the proper direction. Vane life will be
drastically reduced if motor is not operating properly.
Vanes can break or be damaged if motor/pump runs in
the wrong direction.
Model numbers ending in “X” have automatic
thermal protectors which protect the motor by
shutting the motor off if it overheats. The motor will
automatically restart once the motor has cooled.
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