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TROUBLESHOOTING & REPAIR | ||
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CONTACTOR TEST (CONTINUED)
FIGURE F.3 – CONTACTOR
CONTROL BOX
CONTACTOR
PROCEDURE
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1.Perform the Case Removal Procedure.
2.Remove the 5
3.Apply the correct input voltage
4.Check for the correct voltage at leads 507 and 578 at the contactor. Look for 0VDC when the trigger is open and about 3VDC when it is closed. See wiring diagram.
5.If the 3VDC is missing or low, check the leads and connections between the Contactor and the control board. See the Wiring Diagram. If the leads and connections are ok, the con- trol board may be faulty.
6.If high voltage is seen (Approx. 35 volts) the Contactor coil is open.
7.Normal solenoid coil resistance is 4 ohms.
8.The Contactor can also be checked by dis- connecting the leads and applying 12VDC directly to the terminals. If the solenoid does not activate the solenoid is faulty.
9.If the contactor does not pass all the above tests it needs to be replaced. See contactor removal and replacement procedures.
10. Reassemble the feeder in reverse order.