Lincoln Electric PIPELINER 200 - Manual (Page 84)

DC EXCITER TEST (CONTINUED)
TROUBLESHOOTING & REPAIR F-14 F-14
PIPELINER® 200
SERIES COIL CONNECTION
POINT (NEGATIVE)
POSITIVE
FIGURE F.1 – 120VDC RECEPTACLE
TEST PROCEDURE
1. Turn off the engine and remove all external loads
to the welder terminals and auxiliary receptacle.
MOVING PARTS can injure.
• Remove guards only when necessary
to perform service, and replace them
when the service requiring their
removal is complete.
• Keep hands, hair, clothing and tools away from V-
belts, gears, fans, and all other moving parts when
starting, operating, or repairing equipment.
• If fan guards are missing from a machine, obtain
replacements from a Lincoln Distributor. (See Parts
List.) Always use greatest care when working near
moving parts.
2. Start the engine and put the idler switch in the HIGH
idle position.
3. Using the volt/ohmmeter, carefully check the DC
voltage at the 120V receptacle. (Observe proper
polarity. The large slot of the receptacle is negative.
See Figure F.1.) Normal voltage is 125 - 135VDC,
no load, with the engine at the high idle speed of
1600 RPM. If the voltage is normal, the DC exciter
is functioning correctly. If the voltage is low or not
present, proceed to the next step.
WARNING
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