Transmig 210, 250, 310, 330
Page 30 of 31 DOC No: MIGTRN0001
Date: 14/09/98 Issue No: 2
Power Source Problems (continued)
FAULT CAUSE REMEDY
6 Wire feeds when the torch
trigger switch is depressed
but arc can not be
established.
Poor or no work lead
contact.
Clean work clamp area and
ensure good electrical contact.
7 Mains supply voltage is
ON and contactor in the
Power Source operates but
wire does not feed when the
torch trigger switch is
depressed.
TWECO Torch has been
damaged internally, trigger
wires are making contact
with welding power cable.
Have an Accredited CIGWELD
Service Agent repair torch &
replace PCB.
8 Jerky wire feed A Worn or dirty contact tip A Replace
B Worn feed roll. B Replace
C Excessive back tension
from wire reel hub.
C Reduce brake tension on spool
hub
D Worn, kinked or dirty
conduit liner
D Clean or replace conduit liner
9 No gas flow A Gas hose is cut. A Replace or repair.
B Gas passage contains
impurities.
B Disconnect gas hose from the
rear of Power Source or wire-
feeder then raise gas pressure
and blow out impurities.
C Gas regulator turned off. C Turn on.
10 Gas flow continues after
the torch trigger switch has
been released.
Gas valve has jammed open
due to impurities in the gas
or the gas line.
Have an Accredited CIGWELD
Service Agent repair or replace
gas valve.
