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Description
5 Gas flow won't
shut off
6 The TIG electrode
has been
contaminated due
to the gas flow
shutting off before
the programmed
POST-FLOW time
has elapsed
Possible Cause
A Weld Mode (STD, SLOPE,
REPEAT or SPOT) was
changed before POST-FLOW
gas time had finished.
B Gas valve is faulty.
C Gas valve jammed open.
D POST-FLOW control is set to
60 sec.
The Weld Process Mode
(STICK, HF TIG or LIFT
TIG) was changed before
POST-FLOW gas time had
finished.
45
Remedy
A Strike an arc to complete the
weld cycle.
OR
Switch machine off then on to
reset solenoid valve sequence.
B Have an Accredited Thermal
Arc Service Agent replace gas
valve.
C Have an Accredited Thermal
Arc Service Agent repair or
replace gas valve.
D Reduce POST-FLOW time.
Do not change Weld Process
Mode before the POST-FLOW
gas time had finished.
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