Operation
22
333013B
Fluid Voltage Discharge and
Grounding Procedure
NOTE:
An accessory grounding rod, part No. 210084, is
available to discharge any voltage remaining on a sys-
tem component. Contact your Graco distributor to order.
1.
Turn off the turbine air to all spray guns connected
to the isolated fluid supply and wait 30 seconds.
2.
Discharge the voltage at the voltage isolation sys-
tem by following the procedure specified in the volt-
age isolation system instruction manual.
For WB3000:
fully unscrew the door T-handle lock-
ing screw. This will shut off the air to the gun and
trigger the grounding cylinder to discharge any
remaining electrical charge.
3.
Touch the pump, supply pail, and electrode of the
gun with a grounded rod to make sure the voltage
has been discharged. If you see an arc, verify that
the electrostatics are turned off or see
, page 37 or the voltage isolation
system manual for other possible problems.
Resolve the problem before proceeding.
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1.
Follow the
Fluid Voltage Discharge and Ground-
, page 22.
2.
Relieve fluid pressure in the fluid supply and voltage
isolation system as instructed in their instruction
manuals.
3.
Turn off all the air to the spray gun except the cylin-
der air, which triggers the gun.
NOTE:
The air shut-off device must bleed the air out of
the system.
4.
Trigger the gun into a grounded metal waste con-
tainer to relieve the fluid pressure.
5.
Turn off all remaining air supplies to the gun.
6.
Turn off the main air supply by closing the
bleed-type master air valve on the main air supply
line. Leave the valve closed until you are ready to
spray again.
7.
If you suspect the fluid hose or tip is plugged, or that
pressure is not fully relieved after following the steps
above, slowly loosen the fluid hose fitting at the
pump to relieve pressure gradually, then loosen
completely.
Select a Spray Tip
The fluid output and pattern width depend on the size of
the spray tip, the fluid viscosity, and the fluid pressure.
Use the
, page 59, as a
guide for selecting the appropriate spray tip for your
application.
The fluid supply is charged with high voltage until the
voltage is discharged. Contact with the charged
components of the voltage isolation system or spray
gun electrode will cause an electric shock. To avoid
an electric shock, follow the
Discharge and Grounding Procedure
•
whenever you are instructed to discharge the
voltage
•
before cleaning, flushing, or servicing the sys-
tem equipment
•
before approaching the front of the gun
•
or before opening the isolation enclosure for
the isolated fluid supply.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury
from pressurized fluid, such as skin injection and
splashing fluid follow the Pressure Relief Procedure
when you stop spraying and before cleaning,
checking, or servicing the equipment.
