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Rockwell Automation Publication 2100-IN012G-EN-P - August 2016
Chapter 9
Maintenance
Inspect the Units for Signs of Overheating
1. If there are no signs of overheating and thermal infrared tests indicate
service is not necessary, document the units as acceptable.
Use this information for reviewing the mean time to maintenance for
preventative maintenance for the specific facility.
2. If there are no signs of overheating, but thermal infrared tests indicate
service is required, check the power connections for proper torque.
a. On disconnect switches, service the knife blades with a Scotch-Brite
cleansing pad.
b. Remove all hardened grease.
Take care not to distort the disconnect jaw (stationary contact).
c. Lubricate with a fine film of NO-OX-ID (catalog number 2100H-
N18 for a 0.47 L (1 pt) can, or catalog number 2100H-N18T for a
29.5 ml (1 oz) tube).
If the disconnect is subject to environmental conditions causing
chronic tarnishing, it can be necessary to determine if there is an
incompatibility in the plating material, for example, hydrogen sulfide
and silver plating.
On fuses and fuse clips, service by polishing with a Scotch-Brite
cleansing pad. Do not lubricate the fuses or the fuse clips.
3. If overheating has occurred as indicated by severe tarnishing, infrared
test results, crystallization of insulation on conductors, discoloration of
the components, darkening of the molding materials, brittle conductor
insulation, or deformation and melting of parts, replace the components
that are suspect.
For more information contact, Rockwell Automation LV MCC Technical
Support at 1.440.646.5800 and follow the prompts to Allen-Bradley > Low
Voltage Motor Control Centers > Post Shipment Support.
ATTENTION:
To service the units, make sure that the MCC remote power
sources are disconnected and that the respective disconnects are locked in
the OFF/O position.
If servicing a plug-in unit, remove it from the MCC to facilitate servicing. Refer to
of this publication for unit removal guidelines.
When plugging units back in, refer to CENTERLINE 2100 Motor Control Centers
(MCC) Units with Vertical Operating Handles Installation Instructions,
publication
, and CENTERLINE 2100 Motor Control Center (MCC)
Units with Horizontal Operating Handles Installation Instructions, publication