Filter
Top Products
Maintenance
30 333309E
Wet Cup
The wet cup helps to provide consistent lubrication for
the pump packings and to keep exposed rod from being
coated with dried paint. To maintain the wet cup:
1. Fill the wet cup one-half full with Graco Throat Seal
Liquid (TSL).
2. Maintain level daily.
Fluid Pressure Relief Valves
The fluid pressure relief valves are used to prevent
pumps from generating pressures higher than they sys-
tem rated pressure. If an overpressure situation occurs
the valve will open and discharge fluid from the bottom
relief port. Do not modify, remove, or plug the pressure
relief valve.
Refer to separate relief valve manual for additional
details. See Related Manuals, page 3.
Lubrication
An accessory air line lubricator provides automatic air
motor lubrication. For daily, manual lubrication:
1. Disconnect the regulator
2. Place about 15 drops of light machine oil in the
pump air inlet
3. Reconnect the regulator.
4. Turn on the air supply to blow oil into the motor.
Storage and Extended
Shutdown
Water or moist air can cause material residue in ball
checks and packings to cure.
• Never leave the pump filled with water or air.
• After normal flushing, flush the pump again with
mineral spirits or oil-based solvent; relieve the pres-
sure; and leave the mineral spirits in the pump.
Materials that cure when exposed to air may defeat
the ability of the pressure relief valve to relieve an
overpressure condition, resulting in burst
components and serious injury
NOTICE
Before flushing stop the pump at the bottom of its
stroke to keep fluid from drying on the exposed dis-
placement rod and damaging throat packings.