Tweco 181i Fabricator - Manual (Page 87)

Fabricator 181i
Manual 0-5191 5-5 TROUBLE SHOOTING AND SERVICE
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.
To clean the Welding Power Source, open the enclosure and use a vacuum cleaner to remove any accumulated
dirt, metal filings, slag and loose material. Keep the shunt and lead screw surfaces clean as accumulated foreign
material may reduce the welders output welding current.
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.