Gast 20R Series - Manual (Page 4)

OPERATION
Injury Hazard
Install proper safety guards as needed.
Keep fingers and objects away from openings and
rotating parts.
When provided, motor terminal covers must be in
place for safe operation.
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.
Wear hearing protection. Sound level from motor
may exceed 70 dBA.
Failure to follow these instructions can result in
burns, eye injury or other serious injury.
W ARNING
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. Check the plug, cord
and switch for damage. The thermal protection switch,
if so equipped, may have tripped (if resettable thermal
overload, the motor can restart after cooling).
It is your responsibility to operate this product at
recommended pressures or vacuum duties and room
ambient temperatures. Do not start against a vacuum
or pressure load.
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 are released
from product before starting maintenance.
MAINTENANCE
Ꮨ
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.
Electrical Shock Hazard
W ARNING
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.
WARNING
Check that all external accessories such as relief valves
and gauges are attached to cover and are not damaged
before re-operating product.
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 productʼs
performance and service life.
1. Correct voltage to the unit.
2. Intake filters - clean or replace.
3. Valves - check for damage or contamination, clean or
replace if needed (use a water soluable cleaner only).
4. Piston Cup - check for damage or wear; replace
cylinder and/or cup assembly if needed.
SHUTDOWN PROCEDURES
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 should not be used to pump
condensable vapors such as water. Follow the steps
below to assure correct storage and shutdown between
operating periods.
1. Disconnect plumbing for storage.
2. Operate product for at least 5 minutes without
plumbing.
3. Disconnect power supply.
4. Plug open ports to prevent dirt or other
contaminants from entering product during storage.