Publication 2100-IN012C-EN-P - April 2009 95
Maintenance Chapter 9
Save all parts for reinstallation.
2. Remove the line guard from the disconnect.
3. For access to the disconnect's stationary contacts, remove the arc
hood.
4. Generously apply the NO-OX-ID compound (sufficient enough
to cover with a noticeable film) to both sides of the movable
contact blades and to the adjacent insides stationary contacts
and the hinge.
5. Reinstall the arc hood that was removed in step 3
.
6. Reinstall the line guard cover that was removed in step 2
.
7. If the lubricated disconnect switch is housed in a plug-in unit,
reinstall the unit.
For installation of unit, refer to Installing Units with Vertical
Operating Handles, publication 2100-IN014
.
If the unit requires lubrication because of corrosion (for example, a
sulfuric environment), replacing the unit disconnect may be required
to avoid overheating conditions. Lubrication may temporarily resolve
overheating, however replacing the disconnect switch would be the
ideal, long-term solution.
Use Thermal Infrared or
Other Temperature
Measurement Techniques
for Preventive Maintenance
Use the following procedure when using thermal infrared or other
temperature measurement techniques as part of a periodic
preventative maintenance program on CENTERLINE 2100 Low Voltage
MCCs.
ATTENTION
Temperature measuring techniques are often performed with
the units fully energized and the doors and covers open.
Use extreme caution when performing these measurements so
that energized parts are not shorted.
If care is not taken, electrical shock, severe injury or death will
result.
When working on or near energized electrical equipment,
follow established electrical safety-related work practices.
Refer to NFPA 70E Standard for Electrical Safety in the
Workplace.
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