CIGWELD TRANSTIG 300 AC/DC, Service Manual, Page: 54 / 134

TRANSTIG 300 AC/DC SERVICE MANUAL
10-8 June 30, 2008
Description Possible Cause Remedy
5 Gas flow won’t
shut OFF.
A Weld Mode (
STD
,
SLOPE
,
REPEAT
or
SPOT
) was changed
before POST-FLOW gas time
had finished.
A Strike an arc to complete the
weld cycle.
OR
Switch machine OFF then ON to
reset solenoid valve sequence.
B Gas valve is faulty. B Have an accredited Cigweld
Service Provider repair or
replace the gas valve.
C Gas valve jammed open. C Have an accredited Cigweld
Service Provider repair or
replace the gas valve.
D POST-FLOW control is set
to 60 sec.
D Reduce POST-FLOW time.
6 The TIG electrode has
been contaminated
due to the gas flow
shutting OFF before
the programmed
POST-FLOW
time
has elapsed.
The Weld Process Mode
(STICK, HF TIG or LIFT TIG) was
changed before
POST-FLOW
gas
time had finished.
Do not change Weld Process
Mode before the
POST-FLOW
gas time had finished.
Table 10-3 (continued): Power Source Problems