Pressure Relief Procedure; Trigger Lock - Graco 249514 Operation And Parts Manual

Pressure Relief Procedure

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
hot pressurized fluid, such as skin injection or
splashing fluid, follow the Pressure Relief Procedure
when you stop spraying and before cleaning,
checking, or servicing the equipment.
To help prevent serious injury from burns, do not
touch hot fluid dispensing from the gun.
NOTE: The dispense gun is intended to be used with
materials that are solid and at room temperature. The
following procedure can only be performed when the
system is hot.
1. Fully release gun trigger and engage gun trigger
lock.
2. Shut off fluid supply pump.
3. Hold a metal part of the gun firmly to the side of a
grounded metal waste container. Disengage the
gun trigger lock, then trigger the gun.
8
4. Fully release the gun trigger and engage the gun
5. Open the pump drain valve. Triggering the gun to
6. If you suspect pressure has not been fully relieved

Trigger Lock

Always engage the trigger lock when you stop spraying
to prevent the gun from being triggered accidentally by
hand or if dropped or bumped.
To engage the trigger lock, release the gun trigger and
rotate the lock downward.
Trigger Lock
Engaged
To disengage the trigger lock, rotate the lock upward.
Trigger Lock
Disengaged
trigger lock.
relieve pressure may not be sufficient. Have a
container ready to catch drainage.
due to the dispense gun being clogged:
a. VERY SLOWLY loosen the end coupling from
the dispense gun to relieve pressure gradually.
b. Loosen the coupling completely.
c. Clear the obstruction in the dispense gun.
Trigger Lock
Engaged
Trigger Lock
Disengaged
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