Thermal Dynamics A80 CUTMASTER User Manual

CUTMASTER A80
SERVICE 5-4 Manual 0-4985
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. Units internal fuse blown.
4.Faultycomponentsinunit.
1. Turn primary power disconnect switch to ON position.
2.a)Havequaliedpersoncheckprimaryfuses/breakers.
b) Connect unit to known good primary power receptacle
3. a) Replace fuse.
b) If fuse blows again, return to authorized service center for
repair or replacement.
4. Return to authorized service center for repair or replacement.
Faultindicator
ashing,65PSI
indicatorashing
1. INPUT VOLTAGE SELECTION
SWITCH set for incorrect voltage.
2. Primary input voltage problem.
3.Faultycomponentsinunit.
1. Set INPUT VOLTAGE SELECTION SWITCH to match primary
input voltage.
2.Havequaliedpersoncheckprimaryvoltagetoinsureit
meets unit requirements see section 2.05.
3. Return to authorized service center for repair or replacement.
TEMPERATURE
indicator on.
FAULTindicator
ashing.
1.Airow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LEDoff,FAULT
and MIN pressure
indicatorsashing.
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ashing.
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ashing.
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.

Thermal Dynamics A80 CUTMASTER Specifications

General

Brand	Thermal Dynamics
Model	A80 CUTMASTER
Category	Welding System
Language	English