Graco 253597 Manual De Usuario
Operation
4
311717E
Operation
Pressure Relief Procedure
1.
Engage trigger lock.
2.
Air-Powered Pumps only: Close the bleed-type
master air valve.
master air valve.
Hydraulic-Powered Pumps only: Close the hydraulic
supply line valve first, then the return line valve.
supply line valve first, then the return line valve.
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.
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
drain valve(s) open until you are ready to spray
again.
waste container ready to catch drainage. Leave
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 tip
guard retaining nut or hose end coupling to relieve
pressure gradually, then loosen completely. Clear
hose or tip obstruction.
that pressure has not been fully relieved after follow-
ing the steps above, VERY SLOWLY loosen tip
guard retaining nut or hose end coupling to relieve
pressure gradually, then loosen completely. Clear
hose or tip obstruction.
CAUTION
Hydraulic-Powered Pumps only: When shutting down
the hydraulic system, always shut off the hydraulic
supply line shutoff valve first, and then the return line
shutoff valve to prevent overpressurizing the motor or
its seals. When starting the hydraulic system, open
the return line shutoff valve first.
the hydraulic system, always shut off the hydraulic
supply line shutoff valve first, and then the return line
shutoff valve to prevent overpressurizing the motor or
its seals. When starting the hydraulic system, open
the return line shutoff valve first.