Instruction Booklet IB48083
Effective August 2014
Vacuum interrupter replacement
SLN018, SL12, SL15, and SJ contactors
Figure 1. Open Contactor
DANGER—HAZARDOUS VOLTAGE
READ AND UNDERSTAND THESE INSTRUCTIONS
BEFORE ATTEMPTING REPLACEMENT OF VACUUM
INTERRUPTERS. THIS EQUIPMENT SHALL BE
INSTALLED AND SERVICED ONLY BY QUALIFIED
ELECTRICAL PERSONNEL. A QUALIFIED PERSON IS ONE
WHO IS FAMILIAR WITH THE CONSTRUCTION AND
OPERATION OF THIS EQUIPMENT AND WHO IS AWARE
OF THE HAZARDS INVOLVED.
Vacuum interrupter
subassembly replacement
If it becomes necessary to replace vacuum
interrupters, proceed as follows:
1.
De-energize the contactor. Remove to a
workbench.
2.
Remove the top barrier assembly
(four hex-head bolts, Classic Ampgard
T
only).
3.
Unbolt the shunts on the line side of the
bottles. See
Figure 2
.
Figure 2.
Crossbar
Pivot Plate
Bottle Stud
Bottle Nuts
Contact Spring
Line Terminal
Shunt
VI Bottle
VI Brace
Load Terminal
Bottle Bolt
Armature
Magnet
Operating Coil
Control Board
Kickout Spring Lever
Adjustment Screw
Kickout Spring Lever
Kickout Springs
