Maintenance, Archive, Routine preventive – Ransburg 9040 Classic HV Power Supply 76447 User Manual

Page 24: Troubleshooting

CP-97-02.5

MAINTENANCE

ROUTINE PREVENTIVE

MAINTENANCE

In general, little maintenance is necessary to
ensure proper operation. However, it is important
to keep the interior of the unit clean and free from
moisture or foreign material. For this reason the
following must be done:

1. Keep the exterior of the unit free from dust
accumulation.

2. Always clean the exterior prior to opening the
cabinet door.

3. Open the cabinet door only to perform
maintenance or repair.

4. If the power supply end of the high voltage
cable becomes dirty, clean the end of the cable
with a suitable, clean, non-polar solvent and apply
a light coat of dielectric grease. On a yearly basis,
check to ensure that the dielectric oil (70863-00) is
covering the electrical contact point in the high
voltage tube. If not, add oil as needed.

TROUBLESHOOTING

PC Board T

PC Board Test Jumper

est Jumper

To assist in testing and troubleshooting, a jumper
(JP4) has been incorporated on the 9040 PC
Board. By covering (shorting) both terminals, the
high voltage on relay is triggered. Thus, for testing
and troubleshooting, high voltage output can be

obtained without the need to trigger the spray
applicator or user supplied control device. Just
remember to reposition the jumper after testing, so
that it covers only one terminal or the high voltage
will stay on all the time. (See Figure 7 for location
of test jumper JP4.)

Ground T

Ground Test Procedure

est Procedure

Equipment Required:

Equipment Required:
- Ohmmeter (to measure resistance)

If shocks or sparks are noticed at any point in the
spray system, immediately turn off the power
supply and check the complete system for proper
grounding. Proper grounding of the spray applicator
system can be verified as follows:

1. Ensure that the clamp of the 14 AWG ground
wire assembly is connected to true earth ground.
The resistance between the clamp and a known
earth ground should read less than 25 ohms.

Figure 7: Main PC Board

Squirting 70863-00 dielectric oil down

the HV tube significantly reduces corona
discharge that can cause deterioration of
the HV connection components.

N O T E

If JP4 is left covering (shorting) both

terminals, high voltage will be on whenever
AC power is turned on. This could be
hazardous in some applications.

C A U T I O N

!!!!!

9040 Classic for REA & M90 Systems - Operation

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