Prime/Flush; Start Up And Adjust Pump - Graco Check-Mate P40LCS Instructions Manual

Prime/Flush

Prime/Flush
The pump is tested with lightweight oil, which is left
in to protect the pump parts. If the fluid you are
using may be contaminated by the oil, flush it out
with a compatible solvent before using the pump.
Flush with a fluid that is compatible with the fluid you are
pumping and with the wetted parts in your system.
Check with your fluid manufacturer or supplier for rec-
ommended flushing fluids and flushing frequency.
Always flush the pump before fluid dries on the displace-
ment rod.
CAUTION
Never leave water or water-based fluid in a carbon
steel pump overnight. If you are pumping a
water-based fluid, flush with water first. Then flush
with a rust inhibitor, such as mineral spirits. Relieve
pressure, but leave rust inhibitor in pump to protect
parts from corrosion.
1. Follow Pressure Relief Procedure on page 11.
2. Remove the spray tip/nozzle from the gun/valve.
3. Hold a metal part of the gun/valve firmly to the side
of a grounded metal pail.
4. Start the pump. Always use the lowest possible fluid
pressure when flushing.
5. Trigger the gun/valve.
6. Flush the system until clear solvent flows from the
gun/valve.
7. Relieve the pressure.
12

Start Up and Adjust Pump

Keep hands and fingers away from the priming piston
during operation and whenever the pump is charged
with air. The priming piston extends beyond the intake
housing to pull material into the pump and can ampu-
tate a hand or finger caught between it and the intake
housing. Follow the Pressure Relief Procedure on
page 11 before checking, clearing, or cleaning the
priming piston.
1. Supply fluid to the pump, per the requirements of
your system.
2. Be sure the pump air regulator is closed. Then set
the ram down air regulator to about 50 psi (3.5 bar).
Set the director valve to DOWN.
F . 7
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3. Reduce the air motor regulator pressure and open
the air motor slider valve.
4. Hold a metal part of the gun/valve firmly to the side
of a grounded metal pail and hold the trigger open.
5. Adjust air motor regulator until the pump starts.
6. Cycle the pump slowly until all air is pushed out and
the pump and hoses are fully primed.
Air Motor Regulator
Ram Director Valve
Ram Air Regulator
ti10438a
312376A