Graco 237579 Heat Pump User Manual


 
Operation
6 306287W
Operation
Starting and Adjusting the
Elevator
You must adjust the elevator to ensure that the cover is
supported by the drum.
1. Close all air regulators and air valves.
2. Open the main air bleed valve. Pull up on the air
control valve and let the elevator rise to its full
height. Normal operation requires only a few sec-
onds for air pressure to build up or exhaust, and to
start raising or lowering the elevator.
3. Set a full 200 liter (55 gal.) drum against the elevator
base.
4. With your hands away from the drum and the cover,
push down on the air control valve and lower the
elevator until the cover rests on the lip of the drum.
The support clamp recesses must be tight against
the elevator riser tube.
5. Raise the elevator 1/4 in. (6.4 mm), then tighten the
support clamp screws. This ensures that the cover
rests on the drum lip when the elevator is in the low-
ered position.
6. Before operation, ensure that all fasteners and tube
connections are tightened securely.
NOTE: To increase or decrease the operating speed of
the elevator, loosen the hex nut of the restrictor valve
and turn the valve needle either in or out.
Changing Drums
1. Stop the pump. Close the pump air bleed valve.
2. Pull up on the air control valve to raise the elevator.
3. Remove the empty drum and place the full drum
against the elevator base.
4. Lower the elevator. See Starting and Adjusting
the Elevator.
Moving parts can pinch or amputate your fingers.
When the pump is operating and when raising or
lowering the elevator, keep your fingers and hands
away from the elevator, pump support, drum cover,
and lip of the drum.
Moving parts can pinch or amputate your fingers.
When the pump is operating and when raising or
lowering the elevator, keep your fingers and hands
away from the elevator, pump support, drum cover,
and lip of the drum.
NOTICE
Shortened or recycled drums may cause the pump or
agitator to bottom out in the drum, causing damage.
Contact your fluid supplier to order a standard size
drum.