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Prime the Pump
1. See Fig. 3. Remove the tip guard and spray tip
from the gun (106). Refer to the gun manual.
2. Close the gun air filter/regulator (J), pump air
regulator (G), and bleed-type air valves (B, E).
3. Close the fluid drain valve (F).
4. Connect the air line (A) to the air inlet swivel (K).
5. Check that all fittings throughout the system are
tightened securely.
6. Position the drum (L) close to the pump. The
suction hose (30) is 6 ft (1.8 m) long. Do not
stretch the hose tight; let it hang as shown in Fig.
3, to assist fluid flow into the pump.
7. Place the pump suction tube (33) into the drum.
On carbon steel models, screw the bung adapter
(34) into the drum's bung hole. Adjust the suction
tube so it is about 1/2 in. (13 mm) off the bottom of
the drum, then tighten the thumbscrew.
8. Hold a metal part of the gun (106) firmly to the side
of a grounded metal pail and hold the trigger open.
9. Open the bleed-type air valves (B, E) and the gun
air filter/regulator (J). Slowly open the pump air
regulator (G) until the pump starts.
Operation
10. Cycle the pump slowly until all air is pushed out
and the pump and hoses are fully primed.
11. Release the gun trigger and lock the trigger safety.
The pump should stall against pressure.
12. If the pump fails to prime properly, open the drain
valve (F). Use the drain valve as a priming valve
until the fluid flows from the valve. Close the valve.
NOTE: When changing fluid containers with the hose
and gun already primed, open the drain valve (F) to
help prime the pump and vent air before it enters the
hose. Close the drain valve when all air is eliminated.
Install the Spray Tip
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 11.
Relieve the pressure. Install the spray tip and tip guard
as explained in your separate gun manual, supplied.
The fluid output and pattern width depend on the size
of the spray tip, the fluid viscosity, and the fluid pres-
sure. Use the Spray Tip Selection Chart in your gun
instruction manual as a guide for selecting an
appropriate spray tip for your application.
WARNING
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