R-Tech TIG160FPP Operation Instructions Manual page 22

•
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 switch is in 2 way position, the remote foot pedal will not work in the
4- way position, this is for torch switch operation only.
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 too large for process
4 Gas flow may be insufficient, increase gas flow, reduce tungsten stick out from ceramic
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