SWP ARC120 User Manual

10
Please note: In the event of a fault with this inverter welding machine, only qualied technicians
are authorised to undertake repairs.
Troubleshooting
Fault Symptoms Reason
No output from machine, O.C. Light not lit, internal fan
not working
1. Possible failure of voltage input. Consult an authorised
technician.
2. Possible failure of power supply. Check plug and power
cable for damage.
No output from machine, O.C. Light not lit, internal fan
not working, machine suddenly halts operation
1. Possible failure of power supply. Check plug and power
cable for damage.
2. The machine is in temporary shut down mode due to
over heating. Wait a few minutes for machine to cool
down and it will automatically re-start.
3. Power supply input is faulty. Check plug and power
cable for damage.
4. The machine is in temporary shut down mode due to
constantly being switched on and o. Unplug the machine
and wait 5 minutes before re-starting.
5. 24 volt relay board may be defective. Consult an
authorised technician for a replacement.
6. The top PCB is not receiving power. Consult an
authorised technician.
No output from machine, O.C. Light not lit, internal fan
is working
1. Possible loose connection in machine. Consult an
authorised technician.
2. Possible failure of Control Module / Drive Circuit /
Drive Module. Consult an authorised technician for a
replacement if necessary.
3. Possible failure of MOSFET / Transformers / Rectier
Diode / Internal connections. Consult an authorised
technician for a replacement if necessary.
No output from machine, O.C. Light is lit
1. The machine is in temporary shut down mode due to
over heating. Wait a few minutes for machine to cool
down and it will automatically re-start.
2. The machine is in temporary shut down mode due to
excess current.
3. Possible function failure of inverter machine. Unplug the
machine and perform the following checks:
a) If the fault indicator is on MOSFET the top PCB is
possibly faulty.
b) If the fault indicator is o there could be damage to
center PCB / possible damage to secondary rectier of
transformer.
c) Possible damage to feedback circuit.
Consult an authorised technician.

SWP ARC120 Specifications

General

Brand	SWP
Model	ARC120
Category	Inverter
Language	English