Arcmaster 200 ac/dc – Tweco 200 ACDC Arcmaster(April2006) User Manual
Page 56
ARCMASTER 200 AC/DC
10-8
April 13, 2006
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 Thermal
Arc Service Agent repair or
replace the gas valve.
C Gas valve jammed open.
C Have an accredited Thermal
Arc Service Agent 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