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Operation
14 313255F
Wet Cup
Before starting, fill wet cup 1/3 full with Graco Throat
Seal Liquid (TSL) or compatible solvent.
Prime the Pump
1. See FIG. 1. Lock gun trigger. Remove tip guard and
spray tip from gun (H). Refer to gun manual.
2. Close gun air regulator (T) and pump air regulator
(X) by turning knobs counterclockwise reducing
pressure to zero. Close bleed-type air valve (U).
Also verify that all drain valves are closed.
3. Connect air line to bleed type air valve (U).
4. Check that all fittings throughout system are tight-
ened securely.
5. Position pail close to pump. Suction hose is about
4 ft (1.2 m) long. Do not stretch hose tight; let it hang
to assist fluid flow into pump.
6. Hold metal part of gun (H) firmly to side of grounded
metal pail, unlock trigger, and hold trigger open.
7. Units with runaway protection only: enable the
prime/flush function by pushing the prime/flush but-
ton on the DataTrak.
8. Open bleed-type air valve (U). Slowly turn pump air
regulator (X) clockwise, increasing pressure until
pump starts.
9. Cycle pump slowly until all air is pushed out and
pump and hoses are fully primed.
10. Units with runaway protection only: disable the
prime/flush function by pushing the prime/flush but-
ton on the DataTrak.
11. Release gun trigger and lock trigger safety. Pump
should stall against pressure.
Install the Spray Tip
Follow Pressure Relief Procedure, page 13. 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 pressure.
Use the Spray Tip Selection Chart in your gun instruc-
tion manual as a guide for selecting an appropriate
spray tip for your application.
FIG. 5. Wet Cup
ti11927a
Wet
Cup