CUTMASTER 102
Manual 0-4998
SERVICE
5-5
5.05 Basic Troubleshooting Guide
WARNING
There are extremely dangerous voltage and power levels present inside this unit. Do not attempt to diagnose or repair
unless you have had training in power electronics measurement and troubleshooting techniques.
Problem - Symptom Possible Cause
Recommended Action
ON / OFF Switch
is ON but the A/C
Indicator does not
light
1. Primary power disconnect is in
OFF position.
2. Primary fuses / breakers are
blown or tripped.
3. Faulty components in unit.
1. Turn primary power disconnect switch to ON position.
2. a) Have qualified person check primary fuses / breakers.
b) Connect unit to known good primary power receptacle
3. Return to authorized service center for repair or replacement.
FAULT indicator
flashing, 65 PSI
indicator flashing.
Fan MOT 1 is ON.
1. INPUT VOLTAGE SELECTION
SWITCH set for incorrect voltage.
2. Primary input voltage problem.
3. Faulty components in unit.
1. Turn OFF power to unit then set INPUT VOLTAGE SELECTION
SWITCH to match primary input voltage.
2. Have qualified person check primary voltage to insure it
meets unit requirements see section 2.04.
3. Return to authorized service center for repair or replacement.
TEMPERATURE
indicator ON. FAULT
indicator flashing.
1. Air flow through or around the
unit is obstructed.
2. Duty cycle of the unit has been
exceeded
3. Failed components in unit
1. Refer to clearance information – section 2.04
2. Allow unit to cool.
3. Return to authorized service center for repair or replacement.
GAS indicator OFF,
FAULT and MIN
pressure indicators
flashing.
1. Gas supply not connected to
unit.
2. Gas supply not turned ON.
3. Gas supply pressure too low.
4. AIR PRESSURE CONTROL
regulator set too low.
5. Failed components in unit.
1. Connect gas supply to unit.
2. Turn gas supply ON.
3. Set air supply inlet pressure to unit to 120 psi.
4. Adjust regulator to set air pressure - see section 4.02.
5. Return to authorized service center for repair or replacement.
FAULT and 70 PSI
indicators flashing.
After 20 seconds fan
MOT 1 turns ON.
1. Shield Cup loose.
2. Torch not properly connected to
power supply.
3. Problem in torch and leads PIP
circuit.
4. Failed components in unit.
1. Hand tighten the shield cup until it is snug.
2. Insure torch ATC is securely fastened to unit.
3. Replace torch and leads or return to authorized service center
for repair or replacement.
4. Return to authorized service center for repair or replacement.
FAULT and 75 PSI
indicators flashing.
1. Start signal is active when ON/
OFF SWITCH is turned to ON
position.
2. Problem in the torch and leads
switch circuit.
3. Failed components in unit.
1. Start can be active for one of the following:
• Hand torch switch held closed
• Hand pendant switch held closed
• CNC START signal is active low
Release the START signal source
2. Replace torch and leads or return to authorized service center
for repair or replacement.
3. Return to authorized service center for repair or replacement.
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