Please I need help wiring Leeson motor to Furnas switch
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  1. #1
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    Default Please I need help wiring Leeson motor to Furnas switch

    Hello,
    I recently bought an Atlas Colchester lathe that was a basket case.
    It has a Leeson motor (cat# 100956.00, model# C4C17FBA).
    The motor has 6 wire leads labeled: T1, T2, T3, T4, T5, T8
    For low volt (I assume 110AC):

    CCW L1: T1, T3, T8 L2: T2, T4, T5

    CW L1: T1, T3, T5 L2: T2, T4, T8

    The Drum Switch is a Furnas A-14/A14. It is a 3 position switch with Off in Center position with Forward & Reverse on opposing sides.

    On the bottom of the switch there are 6 terminals A, 1, 2 & B, 3, 4.
    The switch has been wired where: white to A, none to 1, gray to 2, black to B, green to 3, red to 4.


    The internal connections wiring diagram reads:
    Forward: A, 1, 2 B, 3, 4
    Reverse: A, 1, 4 B, 2, 3

    Any help is appreciate but remember you're communicating with the electronics class idiot!

    Keep it simple, PLEASE!

    If in this posting I made any faux pas, please accept my apologies.

    Thank you. Lou


    Here are the motor specs:

    Catalog No 100956.00 Model C4C17FB4G
    Product type AC MOTOR Stock Stock
    Description 1/2HP..1725RPM.48.TEFC.115/208-230V.1PH.60HZ.CONT.NOT.40C.1.15SF.RIGID.GENERAL PURPOSE.C4C17FB4G
    Information shown is for current motor's design View Outline | View Connection
    Engineering Data
    Volts 115 Volts 208-230 Volts
    F.L. Amps 8 F.L. Amps 3.8-4 F.L. Amps
    S. F Amps 8.4 S. F Amps 4.1-4.2 S. F Amps
    RPM 1800 Hertz 60
    HP 1/2 Duty CONTINUOUS TYPE CF
    KW 0.37
    Frame 48 Serv. Factor 1.15 Phase 1
    Max Amb 40 Design O Code L
    Insul Class F Protection NOT Therm.Prot.
    Eff 100% 66 Eff 75% PF 61
    UL Y-(LEESON UL REC) CSA Yes Bearing OPE 6203
    CC Number CE Bearing PE 6203
    Load Type Inverter Type NONE Speed Range NONE
    drumterm.jpgdrumswitch.jpgleeson-wire.jpg

  2. #2
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    The diagram to use is listed on your drum switch schematic. Use the one that says "Condenser Motor 6 Leads 110V"
    The start winding leads that are not labeled in the diagram are T5 & T8 on your motor. You can connect them (T5 & T8) either way. Swap them around to change direction rotation if desired.

    SAF Ω


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