Gast 1534 Series Oilless Vacuum Pumps and Compressors - Manual (Page 3)

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.
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.
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.
It is your responsibility to operate this product at
recommended pressures or vacuum duties and
room ambient temperatures.
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.
OPERATION
Check that all external accessories such as relief
valves and gauges are attached to cover and are not
damaged before re-operating product.
31 and 33 Series Models
1. Remove the inlet filter.
2. Start the unit up and cover the exhaust port with a
cloth (this is to protect you from contact with the
solvent).
3. Spray Gast recommended flushing solvent or any
other non-petroleum based solvent directly into inlet
port for 5-10 seconds.
4. Plug the inlet port for 20-30 seconds to let the unit
pull a vacuum on itself.
5. Release the vacuum and repeat steps 3 and 4
several times or until you hear a change in the sound
of the unit. If no change is noticed, a Service Kit may
need to be installed. (See Service Kit Installation)
32 and 34 Series Models
1. Remove six end plate bolts. (See exploded view)
2. Use a small hammer to carefully tap on end plate to
remove. Use caution when using hammer.
3. Check that vanes are moving freely in and out of
vane slots. Replace vanes if more than 50% of the
vane extends past the vane slot.
4. Remove vanes and clean both sides with a fine
emery cloth. Clean endplate with a fine emery cloth.
5. Flush vanes by spraying with Gast recommended
flushing solvent. Remove all solvent from vanes.
6. Flush body, rotor and endplate by spraying with Gast
recommended flushing solvent. Remove all solvent
from each part.
7. Check body, rotor and end plate for scoring. If each
part is clean and shows no signs of scoring, reinstall
part. If scoring appears, send unit to factory or
replace with new part(s).
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. In the 32 Series
models, filters are inside the pump. After cleaning, dry
with compressed air to make sure all moisture is
removed before replacing filters.
3
MAINTENANCE
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.
Clean this product in a well ventilated area.
Failure to follow these instructions can result in
burns, eye injury or other serious injury.
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.
Do not pump flammable or explosive gases or
use in atmospheres that contain such gases.
Failure to follow these instructions can result in
fire, burns, eye injury or other serious injury.