16
3 Blown or missing fuses on
mains input.
Fan runs normally at power
up – No output from machine
Check for proper input
voltages as per rating plate.
As Above
Fan runs –No output form
machine and the overheat
warning light on control panel
is lit.
Welding application may have
exceeded recommended duty
cycle. Allow the unit to run
until fans cools the welder and
the light goes out.
As Above
Fan runs – Machine does not
respond to torch switch.
The torch switch is faulty.
Check for continuity on torch
trigger wires or replace torch.
If torch is working then
suspect PCB failure or broken
wiring.
As Above
Problems
Symptoms
Rec. Course of action
Machine regularly overheats
– warning light on front panel
lit. Fan runs but machine has
no output
1 Welding application may
exceed recommended duty
cycle – Reduce the duty cycle
of job.
2 Dirt and dust may have
clogged the cooling vents.
Blow out machine with dry,
clean low pressure air.
3 Air vents may be blocked
due to inadequate clearance
around machine
If all recommended areas of
fault have been checked and
problem persists, Contact
R-Tech Welding for repair.
MIG Weld Problems
No gas flow when torch
switch activated. Machine has
output and fan runs. A click
can be heard indicating gas
solenoid is operating
1 Gas supply is empty or
turned off
2 Flow regulator may be set
too low
3 Gas hose may be pinched
4 Gas pipe blocked. Blow out
with low pressure air line
If all recommended areas of
fault have been checked and
problem persists, Contact
R-Tech Welding for repair.
Poor weld penetration
Check condition of earth lead
& clamp and make sure it is
fitted to clean area on
bench/workpiece.
If all recommended areas of
fault have been checked and
problem persists, Contact
R-Tech Welding for repair.
Porosity in weld
Check gas flow from torch tip,
if you cant get enough gas
flow, adjust gas regulator flow
if bottle has gas check torch
for gas restriction – try
replacing torch
If all recommended areas of
fault have been checked and
problem persists, Contact
R-Tech Welding for repair.
