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Operation
312795E 15
Prime and Adjust the 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.
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.
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.
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.
NOTICE
The maximum fluid inlet pressure is 15 psi (0.1 MPa,
1.0 bar). Damage to the bellows may occur if you
exceed this pressure. Do not use another pump or
checking device to supply the bellows pump.
F
IG. 6. Air Controls
D
E
H
ti15364a
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.
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.