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308302
Operation
Pressure Relief Procedure
WARNING
PRESSURIZED EQUIPMENT HAZARD
The system pressure must be manually relieved to
prevent the system from starting or spraying acci-
dentally. To reduce the risk of an injury from acci-
dental spray from the gun, splashing fluid, or
moving parts, follow the Pressure Relief Proce-
dure whenever you:
D
are instructed to relieve the pressure,
D
stop spraying,
D
check or service any of the system equipment,
D
or install or clean the spray nozzle.
1.
Shut off the dispensing valve.
2.
Shut off the bleed-type master air valve (required
in your system), on the main air line.
3.
Close the bleed-type master air valve (supplied
with your pump).
4.
Trigger the dispensing valve to relieve pressure.
If you suspect that the dispensing valve, nozzle, or
hose is completely clogged, or that pressure has not
been fully relieved after following the steps above, very
slowly open the pump bleeder valve, having a contain-
er ready to catch the drainage. Leave the pump bleed-
er valve open until you are ready to dispense again.
Very slowly loosen the hose end coupling and relieve
pressure gradually, then loosen completely. Now clear
the nozzle or hose.
WARNING
Keep hands and fingers away from the priming
piston and pump intake during operation and
whenever the pump is charged with air. During
operation, the priming piston extends beyond the
intake housing to pull material into the pump, and
can severely injure or amputate a hand or finger
caught between it and the intake housing. Always
follow the Pressure Relief Procedure at left
before clearing, cleaning, flushing, or servicing any
part of the pump.
The air motor piston and fluid piston (located inside
the air motor cylinder and coupling) also move
when air is supplied to the motor. Do not place your
hand or fingers into the air motor coupling cavity
while the pump is operating.
As the ram is raised and lowered, the wiper plate,
ram tubes, and pump mounting bracket move. To
reduce the risk of pinching or amputation of fingers,
keep you hands away from the wiper plate, lip of
the fluid can, pump bracket, and ram tubes while
the pump is operating.
To reduce the risk of serious injury and damage to
equipment, do not shut off the air supply to the ram
when the ram is raised. Doing so will cause the
pump to fall uncontrolled to the bottom.
