Eaton Cooper Power NR Series, Инструкция по техническому обслуживанию

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Moving contact arm assembly
To replace the moving contact arm assembly proceed as
follows:
1. Detach both opening springs from toggle link (Figure 8).
2. Pull back latch lever assembly and remove C-ring which
secures the toggle link to the bell crank lever.
ote: N The latch assembly can be held back with a
screwdriver as shown in Figure 9.
3. Remove the pivot pin attaching the contact arm
assembly to the side plates of the contact box.
4. Remove the contact arm assembly.
5. Reassemble the new contact arm assembly, which
includes the moving contact bar, to the contact box.
Figure 11. Contact structure removed from head
mechanism.
Figure 8. Components of toggle mechanism assembly.
Opening Springs
C-Ring
Latch Lever
Hex Head Machine
Screws
Toggle link
Bell Crank
Lever
Figure 9. Holding back latch lever with screwdriver.
Screwdriver
Contact Arm
Assembly
Moving
Contact Bar
Measure
1/16 "
Support Arm
Operating Link
Figure 10. Contact engagement adjustment (stationary
contact removed to show measuring point).
8 TYPE NR OIL SWITCH MAINTENANCE INSTRUCTIONS MN230001EN February 2016