Service - Graco EnDure Instruction Manual

Service

Pressure Relief Procedure
WARNING
HOT SURFACE AND FLUID HAZARD
The material and equipment will be hot!
To reduce risk of injury, wear eye
protection, gloves and protective clothing
when installing, operating, or servicing this
dispensing system.
SKIN INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. 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 spraying/dispensing
• install or clean the nozzle
• check or service any of the system
equipment
PRESSURIZED FLUID HAZARD
High pressures can cause serious
personal injury. Be sure to open the
dispense valve during system heat-up
to alleviate pressure which might occur in
the system due to material expansion.
14
This procedure describes how to relieve pressure from
the automatic dispense valve. See your supply unit or
system documentation for instructions on relieving
pressure for the entire dispensing system. Use this
procedure whenever you shut off the dispense valve
and before checking or adjusting any part of the system,
to reduce the risk of serious injury.
1. Shut off the material supply.
2. If heated, shut off electrical power to the automatic
dispense valve.
3. Close all self bleeding air supply valves for supply
unit.
4. Have a container ready to catch the drainage, then
bleed off material pressure by actuating the
dispense valve.
5. Shut off air supply to valve.
NOTE: 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 tip retaining nut
or hose end coupling to relieve pressure
gradually, then loosen completely. Then clear
the tip/nozzle or hose.
309376L