Lincoln Electric IM10144 POWER WAVE S700 - Manual (Page 42)

E-4 TROUBLESHOOTING E-4
POWER WAVE ® S700
Observe all Safety Guidelines detailed throughout this manual
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
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Input fuses keep blowing, or input
breaker keeps tripping.
Machine will not power up (no lights,
no fan, etc.)
Thermal LED is lit.
Machine won't weld, canʼt get any
output. (CR1 will not pull in.)
1. Make certain that fuses or break-
ers are properly sized.
2. Welding procedure is drawing too
much output current, or duty cycle
is too high.
3. There is internal damage to the
power source.
1. Make certain that the Power
Switch (SW1) is in the “ON" posi-
tion.
2. Fuse F1 (in reconnect area) may
have opened.
3. Input voltage selection made
improperly.
4. Circuit breaker CB1 (on case
back) may have opened.
1. Output rectifier thermostat has
opened. After machine has
cooled, reduce load, duty cycle, or
both.
2. DC Bus PC board thermostat has
opened.
1. Input voltage is too low or too
high.
2. If the Thermal LED is also lit.
3. Primary current limit has been
exceeded. Possible short in out-
put circuit. Turn machine off.
Remove all loads from the output
of the machine. Turn back on.
4. This problem will normally be
accompanied by an error code.
Error codes are displayed as a
series of red and green flashes by
the status light.
1. See Installation section of this
manual for recommended fuse
and breaker sizes.
2. Reduce output current, duty
cycle, or both.
3. Contact an authorized Lincoln
Electric Service facility.
1. Check
2. Replace. Also, check input volt-
age selection.
3. Power down, check input voltage
reconnect according to diagram
on reconnect cover.
4. Reset.
1. Check for material blocking
intake or exhaust louvers.
2. Check for excessive load on
40VDC supply.
1. Make certain that input voltage is
proper, according to the Rating
Plate located on the rear of the
machine.
2. See “Yellow Thermal LED is Lit"
section.
3. If condition persists, turn power
off, and contact an authorized
Lincoln Electric Field Service
facility.
4. See “Troubleshooting the Power
Wave / Power Feed System
Using the Status LED” section of
this text.
Basic Machine Problems
Major physical or electrical damage
is evident when the sheet metal cov-
ers are removed. Contact your local authorized Lincoln Electric Field Service facility for
technical assistance.