gala gar SMART MIG 500 MP Manuel D'instruction page 24

SSFDG
SMART MIG 500 MP
9. TROUBLESHOOTING
WARNING: The following operation requires sufficient professional knowledge on electric
aspect and comprehensive safety knowledge. Operators should be holders of valid
qualification certificates which can prove their skills and knowledge. Make sure the input cable
of the machine is cut off from the electricity utility before uncovering the welding machine
Common Malfunction Analysis and Solution:
Malfunction phenomena
The overheating LED is on.
There is no response when
pushing the gun trigger, and the
protection LED is off.
Wire feeder feeds wire when
pushing the gun trigger to feed
gas, but there is no output
current, and the protection LED
is off.
There is output current when
pushing the gun trigger to feed
gas, but the wire feeder does
not feed wire.
Welding can be carried out
when pushing the gun trigger,
but the voltage cannot be
adjusted. The no-load voltage is
too high.
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1. Check the welding current and welding time. Refer to the manual, and
operate according to the requirement.
2. Check the running status of the fan when welding. If the fan does not
work, check if the power supply of the fan is 230V: If the power supply
is normal, check the fan; if the power supply is abnormal, check the
connecting cable of the power supply.
3. Replace the thermal switch if it is damaged.
1. Check if the power LED is on, and if the digital meter shines.
2. Check if the gun trigger is in good contact, and check the welding torch
3. Check the wire feeder for good connection.
1. Check if the power cord connected to the workpiece is in good contact.
2. Check if the quick plug is connected to correct quick socket.
3. Check if the wire feeder is well connected.
4. Check the welding torch for damage.
5. The control PCB PK-94 inside the machine fails.
1. Check the wire feeder for clogging or damage.
2. Check the contact tip of welding torch for clogging or damage.
3. The wire feed board PK-93 fails.
1. Check if control cable of the wire feeder is in good condition.
2. The control PCB inside the machine fails.
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Solution
for good connection.
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