Graco Inc. 7900HD Manual Do Utilizador
Startup
8
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8.
Hold gun against grounded metal flushing pail. Trig-
ger gun and increase fluid pressure slowly until
pump runs smoothly.
ger gun and increase fluid pressure slowly until
pump runs smoothly.
Inspect fittings for leaks. Do not stop leaks with your
hand or a rag! If leaks occur, turn sprayer OFF
immediately. Perform Pressure Relief Procedure
steps 1-3, page 5. Tighten leaky fittings. Repeat
Startup procedure steps 1 - 5. If no leaks, continue
to trigger gun until system is thoroughly flushed.
Proceed to step 6.
hand or a rag! If leaks occur, turn sprayer OFF
immediately. Perform Pressure Relief Procedure
steps 1-3, page 5. Tighten leaky fittings. Repeat
Startup procedure steps 1 - 5. If no leaks, continue
to trigger gun until system is thoroughly flushed.
Proceed to step 6.
9.
Place siphon tube in material pail.
10. Trigger gun again into flushing fluid pail until mate-
rial appears.
Switch Guard Assembly
1.
Put trigger safety ON. Insert SwitchTip. Insert seat
and OneSeal
™
.
2.
Insert SwitchTip.
3.
Screw assembly onto gun. Tighten.
Spray
1.
Spray test pattern. Increase pressure to eliminate
heavy edges. Use smaller tip size if pressure adjust-
ment can not eliminate heavy edges.
heavy edges. Use smaller tip size if pressure adjust-
ment can not eliminate heavy edges.
2.
Hold gun perpendicular, 10-12 in. (25-30 cm) from
surface. Spray back and forth. Overlap by 50%. Trig-
ger gun after moving and release before stopping.
surface. Spray back and forth. Overlap by 50%. Trig-
ger gun after moving and release before stopping.
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