10
140MMA MINI
duralloy.net.au
9. Troubleshooting & Service
The following operations require the operator has sufficient electrical expertise and
comprehensive Safety knowledge. Proper precautions should be adhered to if
opening the machine case as parts are electrically live!
Common Faults and repair method:
Symptom
Solution
Power indicator does not light, fan does not
turn, no welding output.
1. Make sure the power switch is turned on.
2. Confirm that the power input cable are
connected with electricity.
Symptom
Solution
Inconsistent weld output
1. The current potential is damaged, should
be replaced.
2. faulty connections, such as lead plugs to
be checked.
Power indicator light on & fan operating with
no welding output.
1. Check all connections inside the
machine.
circuit output connections is faulty.
2. the alarm indicator light
(1)that access to protected status
because of overheating, in which case,
To maintain power, so that the
temperature dropped to the machine fan
Reasonable temperature, until light goes
out, you can continue working;
(2)Check the thermal switch is damaged,
such damage, to be Replaced
Earth Clamp overheating
Welding clamp rated current is too small, the
replacement of larger size welding clamp.
Manual welding spatter
Output polarity is incorrect, reverse polarity
