Lincoln Electric IM571 RANGER 300 D and 300 DLX - Manual (Page 39)

E-3 TROUBLESHOOTING E-3
RANGER 300 D AND 300 DLX
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 AREAS OF
MISADJUSTMENTS(S)
RECOMMENDED
COURSE OF ACTION
Engine will not idle down to low
speed.
Engine will not go to high idle when
attempting to weld.
Engine will not go to high idle when
using auxiliary power.
Engine will not go to high idle and
circuit breaker CB8 located in engine
compartment is open.
1. Idler switch in High idle position.
2. External load on welder or auxil-
iary power.
3. Faulty wiring or PC board.
1. Poor work lead connection to
work.
2. "Welding Terminals" switch is in
wrong position.
3. Faulty high speed solenoid or
faulty PC board.
1. Auxiliary power load is less than
100 watts.
2. Faulty high speed solenoid or
faulty PC board.
1. Faulty high speed solenoid
1. Set switch to Auto.
2. Remove all external loads.
3. Contact your Local Lincoln Authorized
Field Service Facility for technical
troubleshooting assistance.
1. Make sure work clamp is tightly con-
nected to clean base metal.
2. Set to "Always On" when welding with-
out a welding terminal control cable.
Refer to Operations chapter for proper
use of this switch.
3. Contact your Local Lincoln Authorized
Field Service Facility for technical
troubleshooting assistance.
1. Idler may not respond with less than a
100 watt load. Set idler to "High".
2. Contact your Local Lincoln Authorized
Field Service Facility for technical
troubleshooting assistance.
1. Reset CB8. If it continues to trip, con-
tact your Local Lincoln Authorized
Field Service Facility for technical
troubleshooting assistance.