Graco 253017 Instructions-Parts List Manual page 10

Starting and Adjusting the Pump
1. Be sure the pump air regulator (G) is closed. Then
set the ram air regulator (T) to about 3.5 bar (50
psi). Set the director valve (U) to DOWN.
See Fig. 7.
2. Start the pump as explained in the separate pump
instruction manual.
3. Keep the director valve (U) set to DOWN while the
pump is operating.
NOTE: Increase air pressure to the ram if the pump
does not prime properly with heavier fluids. If fluid is
forced out around the top wiper, ram pressure is too
high and the air pressure should be decreased.
Changing Drums
WARNING
MOVING PARTS HAZARD
Moving parts can pinch or amputate your
fingers. When the pump is operating and
when raising or lowering the ram, keep
your fingers and hands away from the pump intake,
wiper plate, and lip of the drum.
1. Stop the pump. Close the pump air bleed
valve (H).
10 306934
Operation
2. Before raising wiper plate, locate push button on
air release valve (V) .
3. Set director valve (U) to UP to raise wiper plate. At
the same time, carefully equalize pressure in drum
by operating air release valve.
4. Raise wiper plate until it is completely out of drum.
5. Remove empty drum.
6. Inspect wiper plate and, if necessary, remove any
remaining material or material build-up.
7. Place full drum on ram base.
8. Lower the ram and adjust the position of the drum
relative to the wiper plate, as explained under
"Starting and Adjusting the Ram" on page 9.
Shutdown and Care of the Pump
1. Set the director valve (U) to neutral.
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 9.
2. Relieve the pressure.
3. Follow the pump shutdown instructions in your
separate pump manual.
WARNING