Lincoln Electric IM669 RED-D-ARC DC-600 - Manual (Page 33)

DC-600 RED-D-ARC
E-5 TROUBLESHOOTING E-5
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Authorized
Field Service Facility.
PROBLEMS
(SYMPTOMS)
Machine has minimum output and
no control.
The machine does not have maxi-
mum weld output.
POSSIBLE
CAUSE
1. If a remote control unit is NOT
connected to the terminal strip
#75, #76, and #77 terminals, or
is not connected to the 14 pin
MS receptacle the LOCAL
/REMOTE SWITCH must be in
the "Local" position.
2. If a remote control cable is con-
nected to terminals #75, #76 and
#77 or is connected to the 14 pin
MS receptacle the leads may be
"shorted" to the positive weld
output.
3. Make certain the Three Phase
input voltage is correct and
matches the machine rating and
the reconnect panel.
1. Check all Three-Phase input
lines at the DC-600. Make sure
input voltages match machine
rating and reconnect panel.
2. Put LOCAL/REMOTE SWITCH
(SW3) in "LOCAL" position. If
problem is solved then check
remote control unit or wire feed-
er.
3. Check for loose welding cable
connections.
RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS
Observe all Safety Guidelines detailed throughout this manual