24
Reference DIMENSIONAL CHECKS for breaker position and
spring status.
16.5—Close Coil Plunger
To adjust the close coil plunger gap, Figure 8, lift locktab away
from adjusting nut. Turn adjusting nut until close latch actuator
makes contact with close latch while maintaining the correct
plunger dimension. Bend locktab to secure adjusting nut.
Reference dimensional checks for required dimension and
breaker position and spring status.
16.6—Close Spring Discharge Interlock
THIS INTERLOCK IS FACTORY SET AND SHOULD NOT BE
ROUTINELY ADJUSTED IN THE FIELD. The adjustment for
this interlock is as follows. (See Figure 13).
CAUTION: THIS IS A SAFETY FEATURE
NOT A ROUTINE MAINTENANCE ITEM
Figure 13 Spring Discharge Interlock
The breaker should be open with the closing spring charged.
1. Back off 1/4 inch linkage adjusting screw.
2. While holding roller at 0.995 inch dimension, advance
adjusting screw to just touch interlock lever.
3. Check that spring discharges with roller at 0.561 inch
minimum dimension.
4. Close latch must reset as indicated.
16.7—Negative Interlock
THIS INTERLOCK IS FACTORY-SET AND SHOULD NOT BE
ROUTINELY ADJUSTED IN THE FIELD. The negative interlock
is adjusted with the breaker closed and the closing spring
discharged. (See Figure 23).
1. Hold roller at 0.670 inch from mechanism side plate.
Adjust linkage so the striker just makes contact with
properly adjusted trip linkage.
2. Lock in place with 1/4 inch hardware and rivet.
3. Check that breaker trips with roller at 0.531 inch minimum
dimension.
4. Check that linkage moves freely.
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