Lincoln Electric CLASSIC IM514-A - Manual (Page 23)

E-5 TROUBLESHOOTING E-5
CLASSIC I
LINCOLN
ELECTRIC ELECTRIC
®
Observe all Safety Guidelines detailed througout 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
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
RECOMMENDED
COURSE OF ACTION
13. Unable to strike an arc.
14. Engine runs irregularly.
15. Engine fails to pick up speed
when arc is struck.
a. Idle speed screw is misadjusted.
a. Carburetor set too lean.
b. Carburetor Deicing Kit in wrong
configuration.
a. Idle speed is set too low so idler
fails to operate when arc is
struck. Adjust low idle speed
screw for 1000-1050.
a. Adjust carburetor adjusting screw
so engine will run smoothly at
idle speed. *
b. Carburetor Deicing Kit per
instructions on pages B2 and B3.
a. Check the idler.
* See engine manual. * * Flashing the fields.
Flashing the exciter field consists of passing current through the fields using an external source of 6 to 125 volts
of DC power from a storage battery or DC generator. If using a DC generator, keep the generator turned off
except when actually applying the flashing current. To flash the fields:
1. Turn the welder off. Raise one exciter brush off the commutator.
2. On Lincoln welders, attach the positive lead from the external DC source to the right hand brushholder.
3. Carefully holding an insulated section of the negative lead from the DC source, touch its lug or clamp to the
left hand brushholder for five seconds. Pull it away quickly to minimize arcing.
Remove the lead from the right hand brushholder, replace the brush on the commutator, start the welder and the
generator voltage should build up.