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I N S TA L L AT I O N , O P ER AT I O N S A N D M A I N T EN A N C E M A N UA L
A well-planned and executed maintenance program
will ensure uptime, extend equipment life and
reduce overall costs. Routine maintenance is less
costly than the emergency repairs and parts
typically required to correct unexpected equipment
failures.
For information on the mechanical and electrical
life of components included in the MCC, refer to the
individual product documentation.
ABB offers a range of preventive maintenance
services and programs. ABB can also provide ABB-
trained expert technicians and give you fast access
to OEM parts. Contact your ABB representative for
more information.
General safety instructions
Danger:
Maintenance work on this equipment
should only be performed by qualified personnel
wearing proper personal protective equipment.
• Always use an appropriate voltage-sensing device
to confirm that the power is off prior to installing
or working with the MCC.
• National and international standards for the
installation, operation and maintenance of
electrical equipment specify that your facility
must be in clean and orderly condition.
• When performing any work on the MCC,
maintenance staff must comply with the relevant
safety regulations and standards. That includes
both national and international safety rules (e.g.
NFPA 70E, regulations for the operation of power
installations) and any specific maintenance
instructions for the installed devices.
—
Maintenance
Lock out/Tag out
The MCC provides the ability to padlock the
operating handle of a unit in the OFF position to
prevent changing the status or position of a unit.
Up to three padlocks can be used. Follow your local
authority having jurisdiction and/or facility’s
procedures for properly locking out / tagging out
equipment during maintenance.
Tighten unit control and power terminals
Recommended Interval: Perform annually or based
on your local maintenance schedule. Using the
proper tool for each connection, verify the
tightness of all control and power terminals
within the units. While tightening the terminals, be
alert for any signs of heat damage, which indicates
potential problems or loose connection. Heat
generated by inadequate terminal torque is one of
the leading causes of equipment malfunction and
failure. When heat damage is observed, it typically
indicates damage to the component requiring
repair or replacement.
Remove/Insert withdrawable units
You may need to withdraw or remove a unit for
repair, update or testing.. Even with a unit removed,
the IP20- compliant design of the multi-function
wall helps to prevent unintended contact with
energized areas. However, it is still possible to
intentionally insert your fingers or accidentally
make contact with energized areas with tools.
If the unit will be removed for an extended period
of time (>2 hours), it’s advisable to replace it with
another unit or to temporarily enclose the hole
where the unit was removed with a maintenance
door.
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