Thermal Dynamics A80 User Manual

A80
SERVICE 0-4985
5-4
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 Specifications

General

Brand	Thermal Dynamics
Model	A80
Category	Cutter
Language	English