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307674 9
Operation
Prime the Pump
1. See Fig. 2. Remove the spray nozzle from the
gun. See the gun instruction manual.
2. Close all bleed-type air valves (A, N).
3. Close the pump air filter/regulator (B).
4. Close the fluid drain valve (D).
5. Check that all fittings throughout the system are
tightened securely.
6. Connect the air supply line to the pump air inlet.
7. Open the bleed-type air valves (A, N).
8. Hold a metal part of the gun firmly to the side of a
grounded metal pail and hold the trigger open.
9. Open the air filter/regulator (B) until the pump
starts. Run the pump slowly until all air is pushed
out and the system is fully primed. Always use the
lowest pressure necessary to get the desired
results. Higher pressures cause premature tip and
pump wear.
10. Release the gun trigger and lock the trigger safety.
In a circulating system, the pump will run continu-
ously and slow down or speed up on demand, until
the air supply is shut off.
In a direct supply system, with adequate air pres-
sure supplied to the motor, the pump will start and
stop as you open and close the gun.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
11. Relieve the pressure. Install the spray nozzle in
the gun, as explained in the gun manual.
WARNING
COMPONENT RUPTURE HAZARD
To reduce the risk of overpressurizing
your system, which could cause compo-
nent rupture and serious injury, never
exceed 120 psi (8 bar) air supply pressure to the
pump.
12. Use the air filter/regulator (B) to control pump
outlet pressure and pump speed. Always use the
lowest pressure necessary to get the desired
results. Higher pressure causes premature pump
wear.
CAUTION
Do not allow the pump to run dry. It will quickly
accelerate to a high speed, causing damage. If your
pump is running too fast, stop it immediately and
check the fluid supply. If the container is empty and
air has been pumped into the lines, refill the con-
tainer and prime the pump and the lines, or flush and
leave it filled with a compatible solvent. Eliminate all
air from the fluid system.