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Operation
3A2799A 5
Operation
Keep the wallet-sized warning card provided with this
gun with the operator at all times. The card contains
important treatment information should an injection
injury occur. Additional cards (part no. 222385) are
available at no charge from Graco.
System Requirements
Pressure drain valves are recommended in the system;
they assist in relieving fluid pressure in the displacement
pump, hose and gun in the event that the gun is clogged
and triggering the gun does not relieve all pressure.
Ground the System
Ground the pump and all other equipment used or
located in the spray area. Check your local electrical
code for detailed grounding instructions for your area
and type of equipment. Follow the grounding instruc-
tions provided in your pump or sprayer manual. Ground
the gun through connection to a properly grounded fluid
hose and pump or sprayer.
Gun Trigger Lock
1. To engage the gun trigger lock, rotate the lock so it
is perpendicular to the gun body. See FIG.1.
2. To disengage the gun trigger lock, push the lock out
and rotate it so it is parallel with the gun body. See
FIG.1.
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Engage the gun trigger lock.
2. Shut off power to the pump.
3. Disengage the gun trigger lock.
4. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun to relieve pressure.
5. Engage the gun trigger lock.
6. Open the system drain valve, having a container
ready to catch the drainage. Observe the pressure
gauge. The gauge reads 0 psi/bar when fully
drained. Close the system drain valve.
7. If you suspect that the spray tip or hose is com-
pletely clogged or that pressure has not been fully
relieved after following the previous steps, very
slowly loosen the tip guard retaining nut or hose end
coupling to relieve pressure gradually. Clean the tip
or hose obstruction.
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Grounding provides an escape wire
for the electric current.
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 the equipment.
FIG. 1: Trigger Lock Positions
Locked
Unlocked
ti19265a