[23]
•
Machine keeps overheating - Warning light is lit on machine
Check if fan is running
–
if not
contact R-Tech for repair Check the cooling vents for obstruction, blow out machine with clean
dry low pressure air supply. Check for adequate ventilation around machine
•
Porosity in weld
–
No / low gas at torch tip
Check gas supply from gas bottle Check flow rate
on regulator Check gas hose for restrictions Check for draughts in local area, open doors etc
Replace tig torch
–
may have gas restriction
•
Poor weld penetration
Check condition of earth lead and clamp and ensure clamp is connection
via a clean area on work piece Check condition of tig torch, try other tig torch
Machine stuck on minimum amps when welding although higher amperage has been set
Make sure machine has not been set to 4-way operation as when in this mode when you press
torch switch you get minimum amps and when you let go of switch machine will go to maximum
amps set.
•
When using foot pedal machine is stuck on minimum amps
Make sure 2/4 way selector is in
2 way position, the remote foot pedal will not work in the 4-way position, this is for torch switch
operation only or remote amperage control torch.
•
Arc „Flutters‟ when
TIG welding
1. Tungsten electrode may be too large in diameter for the
current setting. 2. Tungsten not sharp when in DC mode 3. Gas shielding flow may be low or
high, check gas flow , reduce tungsten stick out beyond ceramic 4. Check for leaks in torch & gas
hoses
•
Black areas along weld bead
1. Clean any oily or organic contamination from the work piece 2
Tungsten electrode contaminated. Replace or sharpen 3 Check for leaks or contamination on
gas hoses & connections. 4 Gas flow may be insufficient, Increase gas flow, reduce tungsten
stick out from ceramic
•
Weak HF
–
Poor arc striking
–
welding output normal
1 Check torch and earth connections
–
is torch cable insulation in good condition. 2 Check for leaks or contamination on gas hoses &
connections. 3 Gas flow may be insufficient, increase gas flow, reduce tungsten stick out from
ceramic 4 Keep output cables short as possible
•
HF spark is present at the tungsten electrode but unable to start welding arc, Machine has
normal welding output
1 Tungsten may be contaminated - replace or sharpen 2 The current
may be set too low 3 Tungsten may be to large for process 4 Gas flow may be insufficient,
increase gas flow, reduce tungsten stick out from ceramic
No HF when torch trigger pressed, no blue spark between HF points
Examine and clean HF
points with clean dry low pressure air line HF PCB faulty
–
Contact R-Tech for repair
Summary of Contents for SI-TIG-300
Page 31: ... 28 9 TIG WELDING TORCH DETAILS ...
Page 32: ... 29 ...
Page 33: ... 30 10 ARGON FLOWMETER REGULATOR DETAILS ...
Page 34: ... 31 ...
