24
Instruction Book
IB02707112E
August 2015
50/75VCPW-VSR
Breaker To Vacuum Starter Replacement Unit
EATON CORPORATION www.eaton.com
Figurt 6.17. Sto Gap Btowttn RNlltr Btaring and Cam oN
.5mm (.020”)
4. Install four 8mm x 1.25 bolts 16mm long, with lock and flat
washers through the bottom of the contactor base plate into the
latch base plate, do not tighten at this time.
5. With contactor energized, place a 0.5mm (0.020 in.) feeler gage
between roller bearing and rotating cam on lath assembly, see
Figure 6.17
WARNING
FOLLOW NECESSARY PRECAUTIONS INCLUDING INSURING THAT ALL
TRANSFORMERS ARE PROPERLY ISOLATED BEFORE APPLYING POWER TO
CONTACTOR COIL. IF VOLTAGE IS BACK FED INTO A TRANSFORMER, HIGH
VOLTAGE WILL BE GENERATED ON THE TRANSFORMER PRIMARY. HIGH
VOLTAGE CAN CAUSE SERIOUS INJURY OR DEATH.
6. Apply force to latch assembly, sliding cam towards roller bearing,
and tighten four mounting bolts through contactor baseplate. Torque
to 200 in-lb (22.6 N-m).
7. Release the latch by depressing the latch release tab on the latch
assembly. Refer to Figure 6.17.
WARNING
WHEN RELEASING THE LATCH SEVERAL PARTS OF THE CONTACTOR WILL
MOVE WITH CONSIDERABLE FORCE. USE CAUTION TO INSURE FINGERS
ARE NOT PINCHED AS THE CONTACTOR IS FORCED OPEN BY THE RETURN
SPRING.
8. Route the two control wires from the full bridge diode across the
main coils, connecting them to the main coil control wires with tie
straps, and terminate them at terminals 7 & 8 on the control board.
