Allen-Bradley 1512B, User Manual

Page: 104 / 108

104 Rockwell Automation Publication 1500-UM055I-EN-P - December 2021
Appendix D Integrated Protective Maintenance Grounding Device
Maintenance
The IPMG device is virtually maintenance free. All contacts are lubricated in
the factory at the time of shipment. General annual inspections should include
that the main drive line operates smoothly and does not stick or bind due to
possible misalignment that is caused by the mechanical interlocks and
interfacing to the main contactor and isolation switch. The grounding
(earthing) process is achieved through the movable blades and the fixed
terminal points within the frame of the IPMG device. Verify that these
connections are intact and that the flexible grounding conductors, are
attached to the common shaft of the IPMG device, and are not broken,
distressed, or frayed.
Spare Parts
Spare Parts
Part Part No.
Replacement auxiliary switch (two form C contacts) PN-125139
Operating handle PN-612406
Nyogel 759G/760G contact lubricant 80158-357-51