Operation; Model 207-279; Model 223-634 - Graco J Series Instructions-Parts List Manual

WARNING
Follow the Pressure Relief Procedure on page 8
before checking or repairing the ram or any other
part of the system and when shutting down the
system.
Keep hands and fingers away from the ram plate,
fluid pump inlet, and lip of the fluid container when
raising or lowering the ram to reduce the risk of
pinching or amputating hands or fingers.
Before Pumping Fluid
1. Turn the director valve knob (17) to OFF. Close the
ram air regulator and main air control valve.
2. Turn the director valve knob to UP. Open the main air
control valve and ram air regulator until the ram starts
to move upward. Let the ram rise to its full height.
3. Set a full drum of fluid on the ram base, slide it back
against the tube stop, and center it under the ram
plate. See the Typical Installation on page 4 and the
Accessories section for drum clamps (J) that center,
hold, and properly align the drum with the ram. Then
remove the drum cover and smooth the surface of
the fluid with a straightedge.
NOTE: Do not use drums that have side bungs or large
dents with this ram. Rough bung openings or
large dents will damage the wipers or stop the
ram plate, resulting in a runaway pump.
4. Turn the director valve knob to the DOWN position
and lower the ram until the ram plate is just ready to
enter the drum, then turn the valve to OFF. Reposi-
tion the drum so the wipers will not hit the drum lip,
then open the vent valve (23) on the ram plate.
14
17
14
17
Fig 3

OPERATION

Ram Air Controls
(Model 207–279)
Ram Air Controls
(Model 223–634)
5. Turn the director valve knob to the DOWN position,
lower the ram plate until all air is forced out and fluid
comes out of the vent opening. Then turn the director
valve knob to OFF and close the vent valve (23).
6. Set the air pressure to the ram at 50 psi (4 bar). Turn
the director valve knob to the DOWN position. Start
the pump (open the bleed–type master air valve and
fluid dispensing valve). Let the pump run until the
system is primed and all air is forced out. Close the
bleed–type master air valve or fluid dispensing valve
to stop the pump.
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 de-
creased.
How to Use the Ram
1. To pump fluid from the drum, turn the director valve
knob to the DOWN position and start the pump. Al-
ways use the lowest air pressure possible to both the
pump and ram.
2. To change drums, stop the pump and turn the air di-
rector valve knob to UP. Push the air assist valve but-
ton (14) in and hold until the ram plate clears the top
of the drum. When the ram reaches its maximum
height, remove the empty drum and put a full drum in
its place. Follow the procedure under "Before Pump-
ing Fluid", at left.
Shutdown
1. Turn the director valve knob (17) to OFF .
2. Shut off the air supply to the ram and pump and follow
the Pressure Relief Procedure on page 8.
23
Ram Plate and Vent Valve
(Model 207–279 Shown)