Tweco Fabricator 141i Operating Manual - Manual (Page 88)

Fabricator 141i
TROUBLE SHOOTING AND SERVICE 5-2 Manual 0-5145
FAULT CAUSE REMEDY
6 Inconsistent wire feed. A Fouled contact tip. A Replace Velocity contact tip if
necessary.
B Drive roll tension not tight enough. B Tighten drive roll tension.
C Worn feed roll.
C Replace.
D Excessive brake tension on wire
reel hub.
D Reduce brake tension on spool hub
E Worn, kinked or dirty conduit liner. E Clean or replace conduit liner
7 No gas flow in MIG mode. A Gas hose is damaged. A Replace or repair.
B Gas passage contains debris. B Disconnect gas hose from the rear
of Power Source and blow out
debris.
C Shielding gas cylinder valve shut
off.
C Turn on the cylinder.
D Flowmeter/ Regulator turned off. D Turn on flowmeter/ regulator.
E Empty gas cylinder. E Replace gas cylinder.
8 Gas flow continues after
the torch trigger switch has
been released (MIG mode).
Gas valve has jammed open due to
debris in the gas or the gas line.
Have an accredited Tweco service
provider repair or replace gas valve.
9 Power indicator will not
illuminate and welding arc
cannot be established.
The Electricity supply is inad-
equate.
Ensure that the Electricity Supply
voltage is within 95-140 VAC.
10 TIG electrode melts when
arc is struck.
TIG Torch is connected to the (+)
polarity terminal.
Connect the TIG Torch to the (-)
polarity terminal.
11 Arc flutters during TIG
welding.
Tungsten electrode is too large for
the welding current.
Select the correct size of tungsten
electrode. Refer to Table 4-7.
Table 5-1