Lincoln Electric INVERTEC SVM129-B Service Manual page 44

F-6
Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
Machine is dead - no output - no
fan - no display.
No output or reduced output the
first time power is applied to the
machine.
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 1-888-935-3877.
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
1. The power switch must be in the
"ON" position.
2. Check the input voltage. Make
sure all three phases are
applied to the machine.
3. With input power removed,
check that the input voltage set-
up switch and jumper "A" (the
reconnect auxiliary jumper) are
in the proper position for the
input voltage being used.
4. With input power removed,
check the continuity of the 4
amp slow blow fuse located on
the reconnect panel.
1. Check input voltages, fuses and
input voltage reconnect proce-
dures. See the Installation
section.
2. If high input voltage (380VAC or
higher) is applied, the capaci-
tors may need conditioning. Let
the "unloaded" machine idle for
30 minutes.
CAUTION
INVERTEC STT
TROUBLESHOOTING GUIDE
RECOMMENDED
COURSE OF ACTION
1. The input power switch (S1)
may be faulty. Check or
replace.
2. Perform the
T1 Auxiliary
Transformer Test.
1. Contact the Lincoln Electric
Service Department. 1-888-935-
3877.
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