Prime and Adjust the Pump

NOTICE

The maximum fluid inlet pressure is 15 psi (0.1 MPa,

1.0bar). Damage to the bellows may occur if you exceed this pressure. Do not use another pump or checking device to supply the bellows pump.

1.Lock gun trigger. Remove tip guard and spray tip from gun. Refer to gun manual.

2.Close gun air regulator (D) and pump air regulator

(H) by turning knobs counterclockwise reducing pressure to zero. Close bleed-type air valve (E). Also verify that all drain valves are closed.

3.Check that all fittings throughout system are tight- ened securely.

4.Position pail close to pump. Do not stretch suction hose tight; let it hang to assist fluid flow into pump.

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FIG. 6. Air Controls

Operation

9.In a direct supply system, with the pump and lines primed, and with adequate air pressure and volume supplied, the pump will start and stop as the gun/valve is opened and closed.

10.In a circulating system, the pump runs continuously and speeds up or slows down as the system demands until the air supply is shut off.

11.Use the air regulator to control the pump speed and the fluid pressure. Always use the lowest air pres- sure necessary to get the desired results. Higher pressures cause premature tip/nozzle and pump wear.

NOTICE

Never allow the pump to run dry of the fluid being pumped. A dry pump quickly accelerates to a high speed, possibly damaging itself. If your pump accel- erates quickly, or is running too fast, stop it immedi- ately and check the fluid supply. If the supply container is empty and air has been pumped into the lines, refill the container and prime the pump and the lines with fluid, or flush and leave it filled with a compatible solvent. Be sure to eliminate all air from the fluid system.

Shutdown and Care of the Pump

For a brief shutdown, relieve the pressure, page 14. For a longer shutdown, or overnight, always flush the pump, page 16, and relieve the pressure, page 14.

NOTE: If the overflow chamber (optional accessory) contains fluid, unscrew the bottle (103) and discard. If it has not been used, the bottle can remain attached to the cap.

5.Hold metal part of gun (L) firmly to side of grounded metal pail, unlock trigger, and hold trigger open.

6.Open bleed-type air valve (E). Slowly open the pump air regulator (H) until the pump starts.

7.Cycle pump slowly until all air is pushed out and the pump and hoses are fully primed.

8.Release the gun trigger and engage the trigger lock. Pump should stall against pressure.

To avoid the buildup of static charge, do not rub the plastic bottle with a dry cloth while it is attached to the pump. Remove the bottle to clean, if needed.

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