Graco Inc. 247550 Manuel D’Utilisation

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Operation
312585E
9
Operation
Pressure Relief Procedure
1.
Engage the trigger lock.
2.
Close the bleed-type master air valve to shutoff the 
pump.
3.
Disengage the trigger lock.
4.
Hold a metal part of the gun firmly to a grounded 
metal pail. Trigger the gun to relieve pressure.
5.
Engage the trigger lock.
6.
Open all fluid drain valves in the system, having a 
waste container ready to catch drainage. Leave the 
drain valve(s) open until you are ready to spray 
again.
7.
If you suspect the spray tip or hose is clogged or 
that pressure has not been fully relieved after follow-
ing the steps above, VERY SLOWLY loosen the tip 
guard retaining nut or hose end coupling to relieve 
pressure gradually, then loosen completely. Clear 
the hose or tip obstruction.
Cleaning Solutions
Prepare the cleaning solution according to the manufac-
turer’s instructions. Be sure to observe all warnings. If 
you are using powdered cleaners, mix them thoroughly 
in a separate pail before adding them to a supply drum. 
Undissolved powders are extremely abrasive and may 
damage pump parts.
Flushing
Hold a metal part of the gun/valve firmly to the side of a 
grounded metal pail and use the lowest possible fluid 
pressure during flushing.
Trapped air can cause the pump to cycle unexpectedly, 
which could result in serious injury from splashing or 
moving parts.
Wear appropriate protective clothing, such as water-
proof outerwear and eye goggles, according to the 
cleaner manufacturer’s recommendations. Cleaning 
chemicals may be toxic, and cause serious irritation to 
your eyes or skin.
To reduce the risk of fluid injection injury, static spark-
ing, or splashing, relieve the pressure, and remove the 
spray tip (spray guns only) before flushing.