Operation; Pressure Relief Procedure - Graco A Series Instructions-Parts List Manual

Operation

Pressure Relief Procedure

INJECTION HAZARD
Fluid under high pressure can be injected through
the skin and cause serious injury. To reduce the risk
of an injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure whenever
you:
• are instructed to relieve the pressure
• stop dispensing
• check or service any of the system equipment
• install or clean the fluid nozzles
1. Fully release gun trigger to set safety latch.
2. Disconnect power source.
308124H
3. Hold metal part of gun firmly to side of a grounded
metal waste container. Disengage the safety latch
by pushing latch in while gun is triggered to relieve
fluid pressure.
4. Fully release gun trigger to set safety latch.
5. Open pump drain valve to help relieve fluid pressure
in pump, hose and gun. Triggering gun to relieve
pressure may not be sufficient. Have container
ready to catch drainage.
6. Leave drain valve open until you are ready to dis-
pense again.
If you suspect that the nozzle or hose is completely
clogged or that pressure has not been fully relieved after
following the steps above, very slowly loosen the hose
end coupling and relieve pressure gradually, then loosen
completely. Now clear the nozzle or hose obstruction.
Operation
5