Symptoms, Troubleshooting & repair, Caution – Lincoln Electric IDEALARC R3R-500 User Manual
Page 38
TROUBLESHOOTING & REPAIR
F-4
F-4
IDEALARC R3R
Observe Safety Guidelines
TROUBLESHOOTING GUIDE
detailed in the beginning of this manual.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
216-383-2531 or 1-800-833-9353.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS
Major physical or electrical dam-
age is evident when the sheet
metal cover(s) are removed.
1. Contact your local authorized
Lincoln Electric Field Service
Facility for technical assistance.
1. Contact the Lincoln Electric
Service Department, 216-383-
2531 or 1-800-833-9353
(WELD).
Machine is dead – no output – no
fan – no pilot light.
1. Make sure that the input power
switch is in the “ON” position.
2. Check the three-phase input
voltage at the machine. Input
voltage must match the rating
plate and the reconnect panel.
3. Check for blown or missing
fuses in the input lines.
1. Check the input power switch
(S1) for proper operation. See
the Wiring Diagram.
2. Check the leads associated
with the power switch (S1) and
the control transformer (T2) for
loose or faulty connections.
See the Wiring Diagram.
The machine is dead - not output -
no fan - the pilot light is on. The
amber temperature light is NOT on.
1. Check the three-phase voltage
at the machine. Input voltage
must match the rating plate and
the reconnect panel.
2. Check for blown or missing
fuses in the input lines.
1. Perform the Input Contactor
2. Check the associated leads for
loose or faulty connections
between the input contactor
(CR1), the reconnect panel and
the main transformer. See the
Wiring Diagram.