Lincoln Electric IM642 IDEALARC DC-600 - Manual (Page 35)

E-7 TROUBLESHOOTING E-7
IDEALARC® DC-600
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln 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 Lincoln
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 out-
put.
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 DC600. 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
feeder.
3. Check for loose welding cable
connections.
RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS
Observe all Safety Guidelines detailed throughout this manual