SanRex SANARG 300AP Operator's Manual page 70

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.
70
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 Service
Agent repair or replace the
gas valve.
C Have an Accredited Service
Agent repair or replace the
gas valve.
D Reduce POST-FLOW time.
Do not change Weld Process
Mode before the POST-
FLOW gas time had finished.