Graco 239731 Manual De Usuario

Follow the Pressure Relief Procedure whenever 
you see this symbol.

1.

Close the air regulators.

2.

Close the supply pump’s bleed-type master air valve 
(required in this system).

3.

Open the dispensing valve until pressure is fully 
relieved.

If you suspect that the dispensing valve, extensions, or 
grease fitting coupler is clogged, or that pressure has 
not been fully relieved after following the steps above, 
VERY SLOWLY loosen the coupler or hose end coupling 
and relieve pressure gradually, then loosen completely 
and clear the clog.

Open the bleed-type master air valve. Open the dis-
pensing valve and slowly open the air regulator until the 
pump is running smoothly. After all the air is purged, 
close the dispensing valve. The pump starts and stops 
as the valve is opened and closed.

Use the air regulator (E) to control the pump speed and 
fluid pressure. See F

. 2. Always use the lowest pres-

sure necessary to obtain the desired results.

When done using the pump for the day, always follow 
the Pressure Relief Procedure at left.

This equipment stays pressurized until pressure is 
manually relieved. To help prevent serious injury from 
pressurized fluid, such as skin injection, splashing 
fluid and moving parts, follow the Pressure Relief 
Procedure when you stop spraying and before 
cleaning, checking, or servicing the equipment.

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