Troubleshooting
32
333013B
Visual Checks
First, check the system for any visible faults or errors to
help isolate whether the spray gun, fluid hose or voltage
isolation system has failed. A voltage probe and meter,
part no. 245277, is helpful for diagnosing voltage prob-
lems and is required for some of the troubleshooting
tests that follow.
1.
Check that all of the air and fluid tubes and hoses
are properly connected.
2.
Check that the voltage isolation system valves and
controls are properly set for operation.
3.
Check that the interior of the isolated enclosure is
clean.
4.
Check that the spray gun and voltage isolation sys-
tem have sufficient air pressure.
5.
Check that the spray gun and voltage isolation sys-
tem have sufficient air pressure.
6.
Check that the gun turbine air (TA) is turned on and
the pressure is set correctly.
7.
Check that the voltage isolation system's enclosure
door is closed and that any safety interlocks are
engaged and working properly.
8.
Make sure the voltage isolation system is in the “iso-
late” mode, where it is isolating the fluid voltage
from ground.
9.
To eliminate air gaps in the fluid column, spray
enough fluid to purge the air out between the volt-
age isolation system and the spray gun. An air gap
in the fluid hose can break the electrical continuity
between the spray gun and the isolated fluid supply
and cause a low voltage reading on a voltage meter
connected to the isolated fluid supply.
10. Check the spray gun cover and barrel for accumu-
lated overspray. Excessive overspray can create a
conductive path back to the grounded gun body.
Install a new gun cover and clean the exterior of the
gun.
11. Inspect the entire system for any visible fluid leak-
age and repair any fluid leaks that are found. Pay
special attention to the following areas:
•
Packing area of the spray gun.
•
Fluid hose: check for leakage or any bulges in
the outer cover, which may indicate an internal
leak.
•
Internal voltage isolation system components
