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TROUBLESHOOTING & REPAIR
INPUT CONTACTOR TEST (continued)
FIGURE F.1 – INPUT CONTACTOR CONNECTIONS
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TEST PROCEDURE
1.Disconnect the main input supply power to the machine.
2.With the 5/16” nut driver, remove the case top and the reconnect panel cover.
3.Locate the two leads connected to the input contactor coil, #233 and X1 #232 (top). See Figure F.1 for location.
4.Connect an AC voltmeter to the leads.
WARNING
Electric Shock can kill.
•With the input power on, there are high voltages inside the machine. Do not reach into the machine or touch any internal part of the machine while the power is on.
5.Apply the correct voltage to the machine and turn the power switch (S1) ON.
6.Check for 120VAC at the contactor coil leads.
If the 120VAC is NOT present, with the power switch (S1) on, check the power switch (S1) and associated circuitry. See the Wiring Diagram. Also perform the Control
Transformer (T2) Voltage Test.
If the 120VAC is present and the contactor does NOT activate, then the input contactor is faulty. Replace the input contactor.
IDEALARC
LINCOLN ®
ELECTRIC
