Tweco VAF4 Transmig - Manual (Page 65)

TRANSMIG VAF4
Manual 0-5231 4-1 SERVICE
SECTION 4: SErvICE
4.01 Cleaning The Unit
Periodically, clean the inside of the wire feeder and
feedhead assembly by using a vacuum cleaner or clean,
dry compressed air of not more than 25 psi (172 kPa)
pressure. After cleaning the unit, check all electrical
components for loose or faulty connections and correct
if necessary.
4.02 Cleaning The Feed rolls
Clean the grooves on the lower feed roll frequently.
This cleaning operation can be done by using a small
wire brush. Also, wipe off or clean the grooves on the
upper bearing roll. After cleaning the feed rolls, tighten
the feed roll retaining knobs accordingly.
4.03 System Maintenance
The user has been given a visual tool in the feed moni-
tor display. Use the feed monitor display in determin-
ing when a new contact tip, liner, and/or wire guide is
needed.
4.04 Troubleshooting Guide
NOTE
Refer to the Connection Diagram in the Ap-
pendix chapter of this manual for graphical
assistance in disassembling and trouble-
shooting the wire feeder.
Scope
The troubleshooting guide is intended to be used by
qualified service technicians. The troubleshooting guide
contains information which can be used to diagnose
and correct unsatisfactory operation or failure of the
various components of the wire feeder. Each symptom
of trouble is followed by a list of probable causes and
the procedure necessary to correct the problem.
Safety
To ensure safe operation and service, read this entire
manual before attempting to service or repair this ma-
chine. The service technician may be asked to check
voltage levels while the machine is turned ON. To assure
safety, use care and follow all instructions accordingly.