Lincoln Electric COOL ARC 24, Operator'S Manual, Page: 14 / 17

English 12 English
Troubleshooting
This Troubleshooting Guide is designed to be used by the machine Owner/Operator. Unauthorized repairs performed on
this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. For
your safety, please observe all safety notes and precautions detailed in the Safety Section of this manual to avoid electrical
shock or danger while troubleshooting this equipment.
WARNING
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the
nearest authorized Technical Service Center or Lincoln Electric for technical troubleshooting assistance before you proceed.
LOCATE PROBLEM
(SYMPTOM).
POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION
Cooler does not
operate. 
Power lead unplugged.

No power at outlet.

Power lead is damaged.

Water lines blocked or crimped.

Leak in gun or water hoses.

Reservoir empty.

Plug in power lead.

Check outlet circuit breaker.

Repair damaged lead or order new lead
set.

Clear blockage in hose. Avoid kinking or
putting sharp bends in water lines.

Repair leak.

Fill reservoir.
Internal water leak.

Hose clamp loose on one of internal
hoses.

Internal hose punctured.

Heat exchanger leaking.

Tighten or replace hose clamp.

Replace punctured hose with new hose.

Replace heat exchanger.
Leak at inlet/outlet
connector block. 
Hose clamp loose.

Tighten hose clamp onto hose.
Torch or gun runs hot.

Unit placed by area of extreme heat.

Low coolant flow.

No coolant flow.

Fan not operating.

Move unit away from hot air.

See Low Coolant Flow Section.

See No Coolant Flow Section.

Reference fan section.
Fan operates but there
is low coolant flow.

Leak in torch/gun or hoses.

Torch/gun or hoses partially obstructed.

Reservoir empty or very low.

Repair leak.

Clear obstruction.

Refill reservoir.
Fan operates but there
is no coolant flow. 
Pump failure.

Pump seized.

Replace pump.

Replace pump.
Pump operates, but
fan does not.

Fan blade contacting heat exchanger.

Fan motor failure.

Replace fan.

Replace fan.
Cooler trips outlet
circuit breaker.

Circuit overloaded.

Cooler electrical component failure.

Check outlet circuit breaker.

Replace suppressor assembly and rectifier
inside of cooler.