Ransburg 9040 Classic Power Supply _NO2 Gun 76657-14, -142 - Manual (Page 21)

CP-97-03.6
TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE
Figure 9: Troubleshooting Guide (Continued on Next Page) Figure 9: Troubleshooting Guide (Continued on Next Page) Figure 9: Troubleshooting Guide (Continued on Next Page) Figure 9: Troubleshooting Guide (Continued on Next Page) Figure 9: Troubleshooting Guide (Continued on Next Page)
General Problem General Problem General Problem General Problem General Problem Possible Cause Possible Cause Possible Cause Possible Cause Possible Cause Solution Solution Solution Solution Solution
AC Power ON Indicator AC Power ON Indicator AC Power ON Indicator AC Power ON Indicator AC Power ON Indicator
(Green LED) Does Not
(Green LED) Does Not (Green LED) Does Not (Green LED) Does Not (Green LED) Does Not
Light When ON/OFF
Light When ON/OFF Light When ON/OFF Light When ON/OFF Light When ON/OFF
Switch Is On
Switch Is On Switch Is On Switch Is On Switch Is On
Motor Rotating, But No Motor Rotating, But No Motor Rotating, But No Motor Rotating, But No Motor Rotating, But No
Or Low kV Output At
Or Low kV Output At Or Low kV Output At Or Low kV Output At Or Low kV Output At
Spray Gun
Spray Gun Spray Gun Spray Gun Spray Gun
1. Front panel fuse 1FU or
PC Board fuse F2
defective
2. Connector 7PL or 9PL not
properly plugged into main
PC board
3. Improper input line voltage
4. Improper exhaust fan or
conveyor interlock
connections
5. Defective ON/OFF switch
1SW
6. Defective power supply
1SUP
7. Defective LED display
board
1. Connector 6PL or 1PL not
properly plugged in to
respective locations
2. Defective spray gun or
high voltage cable
3. Loose or broken wire in
power supply
4. Main PC board defective
5. Defective high voltage
multiplier
1. Replace defective fuse.
2. Properly attach connector.
3. Ensure voltage across terminals L1 and N of
terminal block 1TB is between 90 and 264
VAC.
4. Correct connection so that voltage across
terminals L2 and N of 1TB is between 90 and
264 VAC.
5. Voltage across terminals 1A and 2A of ON/OFF
switch 1SW should be between 90 and 264
VAC. If not, replace switch 1SW.
6. Voltage across terminals 2 and 3 of plug 7PL on
main PC board should be 18 VDC. If not,
replace power supply 1SUP.
7. If all other functions of power supply are normal,
replace LED display board.
1. Properly attach connector.
2. Perform a Current Output Test on the power
supply. If proper readings are obtained, check
cable or spray gun for cause. (See Spray Gun’s
Service Manual.)
3. Check all wiring connections for integrity.
Repair wiring as needed.
4. Disconnect 1PL from high voltage multiplier
and plug in to LTST5000 Tester. If improper
readings are obtained, replace main PC board.
5. Disconnect HV cable from power supply. If
problem is still present, connect LTST5000
Tester to 1PL and test. If results of test are
okay, replace high voltage multiplier.
9040 Classic for the No. 2 Process Handgun - Maintenance
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