Ransburg MICROPAK A11789 Service Manual page 24

MicroPak Controller - Maintenance
T T T T T roubleshooting Guide (Cont.) roubleshooting Guide (Cont.) roubleshooting Guide (Cont.) roubleshooting Guide (Cont.)
roubleshooting Guide (Cont.)
General Problem General Problem
General Problem General Problem General Problem
No kV Output at No kV Output at No kV Output at
No kV Output at No kV Output at
Spray Gun and HV Spray Gun and HV Spray Gun and HV Spray Gun and HV Spray Gun and HV
ON Indicator (red ON Indicator (red ON Indicator (red
ON Indicator (red ON Indicator (red
LED) is not Lit LED) is not Lit
LED) is not Lit LED) is not Lit LED) is not Lit
Power Supply Power Supply
Power Supply Power Supply Power Supply
Overloads Overloads Overloads Overloads Overloads
Excessively Excessively Excessively
Excessively Excessively
High Voltage on all High Voltage on all
High Voltage on all High Voltage on all High Voltage on all
the time the time the time the time the time
Component not Component not Component not Component not Component not
working, but kV working, but kV working, but kV working, but kV working, but kV
Output OK Output OK
Output OK Output OK Output OK
2 1 2 1 2 1
2 1 2 1
Possible Causes Possible Causes
Possible Causes Possible Causes Possible Causes
1. Improper interlock connection.
2. High voltage ready condition
not activated.
3. High Voltage On input not
activated.
4. Defective MicroPak Control
Unit.
1. Parts are too close to the
spray gun.
2. Overload setpoint set too
sensitive.
3. Defective spray gun or cable.
4. Defective MicroPak Control
Unit.
1. Ready input is active and
dipswitch SW3-3 is off.
1. Wiring to/from component
loose or broken.
2. Defective component.
Corrective Action Corrective Action
Corrective Action Corrective Action Corrective Action
1. Ensure interlock connection is connected to ground
through a jumper or voltage free contact as detailed
in the "Installation" section of this manual.
2. Activate the high voltage ready input or set
dipswitch 3-3 to the OFF position.
3. Supply 24VDC to the High Voltage On input or if in
manual mode, move the High Voltage Enable
switch to the ON position.
4. If none of the suggestions above resolves the
issue, replace the LECU5004-31 MicroPak Control
Unit.
1. Ensure sufficient distance between spray gun and
parts.
2. Increase the μA setpoint using the μA Adjust
Knob, process board potentiometer R21, or the
0-10VDC over-current setpoint input.
3. Perform a Cable Continuity Test. If proper readings
are not obtained, check cable or spray gun for
cause (see current "Spray Gun" service manual).
4. If none of the suggestions above resolves the
issue, replace the LECU5004-31 MicroPak Control
Unit.
1. Disable ready input or turn dipswitch SW3-3 off.
1. Repair loose or broken wire.
2. Replace component.
CP-06-01