Tweco 141i Fabricator - Manual (Page 90)

Fabricator 141i
TROUBLE SHOOTING AND SERVICE 5-4 Manual 0-5145
5.03 Cleaning the Welding Power Source
WARNING
There are dangerous voltage and power levels present inside this product. Do not attempt to open or
repair unless you are a qualified electrical tradesperson. Disconnect the Welding Power Source from
the Electricity Supply Voltage before disassembling.
5.04 Cleaning the Feed Rolls
Clean the grooves in the drive rolls frequently. This can be done by using a small wire brush. Also wipe off, or
clean the grooves on the upper feed roll. After cleaning, tighten the feed roll retaining knobs.
CAUTION
Do not use compressed air to clean the Welding Power Source. Compressed air can force metal particles
to lodge between live electrical parts and earthed metal parts within the Welding Power Source. This
may result in arcing between this parts and their eventual failure.
5.05 Volt-Ampere Curves
Voltage-Amperage Curves shows maximum voltage and amperage output capabilities of welding power source.
Curves of other settings fall between curves shown.
Welding Current (Amps)
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Output V
oltage (V
olts)
0
30
50
40
60
20
10
MIG (GMAW/ FCAW)
STICK (SMAW)
TIG (GTAW)
Fabricator 141i
Art # A-11807
Figure 5-1: Fabricator 141i Volt-Ampere Curves