Ransburg Evolver MicroPak Controller A10406 - Manual (Page 25)

TROUBLESHOOTING
Following are some areas to investigate when
high voltage faults occur:
• Dirty atomizer interior or exterior.
• Conductive solvent residue on atomizer
assembly.
• Moisture inside or outside of atomizer body,
causing continuity or partial continuity back
to ground.
• Moisture inside or outside of air lines back
to ground (high humidity).
• Loose connections or defective low voltage
cable.
• Loose or defective ground connections.
• Dump lines not clean or dry leading back
to ground.
• Target not grounded and causing arcing to
ground.
CABLE CONTINUITY
TEST
When problems arise, the Cable Continuity Test
can be performed to help determine whether the
problem is with the Evolver MicroPak controller
or the cable and/or cascade assembly.
MAINTENANCE
† Because this test involves access to the
interior of the Evolver MicroPak controller,
where hazardous voltages may be present,
it should only be performed by qualified elec-
tronics technicians.
W A R N I N G !
To conduct the test, perform the following:
1. Ensure that the controller is disconnected from
the AC source.
2. Using a screwdriver, pry open the 6 screw cov-
ers on the top panel of the controller, remove the
screws, and remove the top panel (see Figure 9).
3. Disconnect connector J3 (see Figure 9) from
the rear of the problem MicroPak unit (1 or 2).
Leave the other end of the Low Voltage Cable
connected to the Evolver Spray Gun.
4. Using an ohmmeter, measure the resistance
values between the wires of MicroPak connector
J3. The readings should be as shown in Table 2.
If any of the readings are significantly outside the
values listed in Table 2, the low voltage cable and/
or cascade should be checked for the cause of
the problem. Otherwise, the cause of the problem
is most likely the controller.
5. Reconnect connector J3 and reattach the cover
panel to the controller.
Evolver MicroPak Controller - Maintenance
Ransburg
22 LN-9622-00.5