12
9. Troubleshooting & SERVICE
The following operations require the operator has sufficient electrical expertise and
comprehensive Safety knowledge, the operator can demonstrate its capacity to be held valid
qualifications and knowledge Documents. Make sure to open the case welding power input cable
has broken.
Common Faults and exclusion method:
Symptom
Solution
Power indicator does not light, fan does not
turn, no welding output.
Make sure the power switch is turned on.
Confirm that the power input cable are
connected with electricity.
Symptom
Solution
Fan switch, or not subject to potential
instability in the welding current control,
current, big, sometimes small
The current potential is damaged, should be
replaced.
Bad connections, such as plug-in to be
checked.
Power indicator light shows the normal fan
rotating normal, no welding output.
Check all connectors inside the machine if
there is bad.
A circuit output connections or bad.
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 Replacement.
Hot welding clamp
Welding clamp rated current is too small, the
replacement of larger size welding clamp.
Manual welding big splash
Output polarity is unreasonable, reversed
output connector
