3
Instruction Booklet
IB48083
Effective August 2014
Vacuum interrupter replacement
SLN018, SL12, SL15, and SJ contactors
EATON
www.eaton.com
22.
Turn the center pole bottle nuts clockwise until they are
0.120 ± 0.005 inches from the pivot plate. This is the overtravel
gap. See
Figure 5
. Lock the bottle nuts with a screwdriver
inserted from the front of the frame molding, turning the screw-
driver counter-clockwise with the blade fitted from a notch in one
bottle nut across to a notch in the other bottle nut. See
Figure 3
.
Figure 5. Closed Contactor
23.
De-energize the coil and remove the power source.
24.
Note and record the length of the kickout springs. Loosen the
set screw that locks the kickout spring adjusting screw, then
loosen the kickout spring adjusting screw until the contacts of
the center pole barely touch, using a volt-ohmeter or test light
as an indicator of touch and open.
otee:
N
Whenever adjusting the kickout spring lever, put your free hand over
the kickout springs as a precaution.
25.
With the contactor in this position and the center contacts just
touching, install and adjust the bottle nuts (and spacing washers)
on the other two poles so that these two poles make contact
simultaneously with the center pole when checked with a meter
or test light. Lock the bottle nuts as before.
26.
Install the hollow screws through the guide bar onto the three
bottle studs.
27.
Tighten the kickout spring adjusting screw back to the original
compressed length of the kickout springs. Check that the arma-
ture rests firmly against its stop on the molded frame. When a
screwdriver is pushed against the bottom end of the armature in
the open position, the armature must not move. If it does, the
kickout springs should be tightened further to push the armature
to a solid position. Re-tighten set-screw. Do not overtighten.
28.
Install control transformer primary fuses (Classic Ampgard).
29.
Install top barrier assembly (Classic Ampgard).
Overtravel
Bottle Nuts
Pivot Plate
