Pressure Relief Procedure - Graco Therm-O-Flow 20 Instructions - Parts Manual

Operation

Pressure Relief Procedure

Follow the Pressure Relief Procedure
Whenever you see this symbol.
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
equipment.
NOTE: If using a different dispense applicator, see the
applicator manual for pressure relief instructions.
1. Engage the trigger lock.
F . 25: Engaged
IG
2. Close the system Main Air Slider Valve (CA).
34
3. Set the Ram Director Valve (CC) to the neutral
position.
4. Disengage the trigger lock.
F . 26: Disengaged
IG
5. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun to relieve pressure.
6. Engage the trigger lock.
7. 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 dispense
again.
8. If you suspect the tip or hose is clogged or that
pressure has not been fully relieved after following
the steps above, VERY SLOWLY loosen hose end
CA
coupling to relieve pressure gradually, then loosen
completely. Clear hose or tip obstruction.
CC
334129S