Rockwell Automation Publication 1500-UM055I-EN-P - December 2021
65
Chapter 4 Maintenance
Figure 59 - Isolation Switch Defeater
3. Phase 3 (far right linkage) must be measured for overall travel.
All three phases share the same main actuating shaft but the Phase 3 is the
easiest to measure.
Figure 60 - Isolation Switch Linkage Assembly Location
4. Rest the customer-supplied digital protractor on the bottom of the
isolation switch linkage assembly.
The angle of the linkage must be 180º or slightly higher, with a tolerance of
0/
+6 degrees
.
Closed position
Open position
Isolation Switch
Operating
Handle
Isolation
Switch
Defeater
Isolation Switch Linkage
Assembly (Phase 3)
If a digital protractor is unavailable, lay a straight edge
against the bottom of the steel lever on the operating shaft
to check for parallel alignment of the red link.
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Страница 74: ...74 Rockwell Automation Publication 1500 UM055I EN P December 2021 Chapter 4 Maintenance Notes...
Страница 76: ...76 Rockwell Automation Publication 1500 UM055I EN P December 2021 Chapter 5 Spare Parts Notes...
Страница 106: ...106 Rockwell Automation Publication 1500 UM055I EN P December 2021 Appendix E History of Changes Notes...