Lincoln Electric MAGNUM IM438-B - Manual (Page 27)

E-3 TROUBLESHOOTING E-3
MAGNUM COOLER 10-I & 20-I
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
Leak at inlet/outlet connector
block.
Torch or gun runs hot.
Fan operates but there is low
coolant flow.
Fan operates but there is no
coolant flow.
a. Loose connector fitting.
b. Hose clamp loose.
a. Unit placed by area of extreme
heat.
b. Low coolant flow.
c. No coolant flow.
d. Fan not operating.
e. Heat exchanger clogged.
a. Leak in torch/gun or hoses.
b. Torch/gun or hoses partially
obstructed.
c. Reservoir empty or very low.
d. DC+ or DC- connection loose
on rectifier bridge.
e. Pressure low (pump motor fail-
ing).
f. One or more pump stages
have failed.
a. Pump motor failure.
b. Pump head seized (bearing
failure).
a. Tighten connector nut. (5/8-18
left hand thread).
b. Tighten hose clamp onto hose.
a. Move unit away from hot air.
b. See Low Coolant Flow
Section.
c. See No Coolant Flow Section.
d. Reference fan section.
e. Clean heat exchanger.
a. Repair leak.
b. Clear obstruction.
c. Refill reservoir.
d. Secure DC+ or DC- connec-
tors on rectifier bridge.
e. Replace pump motor.
f. Repair the pump with S20095-
1 or S20095-3 Pump
Replacement Kit or S20095-2
Pump Rebuild Kit.
a. Replace pump motor.
b. Replace pump head with
S20095-1 or S20095-3 Pump
Replacement Kit.