4
M N S - MCC
LO W VO LTAG E M OTO R CO N T R O L C EN T ER
ABB shall not assume any liability for any of the
following:
• Negligent handling of the MNS-MCC (motor
control center) system.
• Insufficient maintenance or non-compliance with
the recommendations presented in this manual
or other documents related to the MCC and its
components.
• Inappropriate repairs or modifications to the
equipment.
• Operation, installation or maintenance of the
equipment by personnel who lack appropriate
training and/or authorization.
• Failure to follow appropriate safety procedures
or use the proper personal protective equipment,
including arc flash, insulating, shielding materials,
and use of insulated tools and test equipment
per the National Electrical Safety Code (ANSI C2)
and Electrical Equipment Maintenance (NFPA
70E).
The examples and diagrams in this manual are
included exclusively for illustrative purposes.
Because many variables and requirements are
associated with each particular installation. ABB
Inc., cannot assume responsibility or liability for
actual use based on the examples and diagrams.
Reproduction of the contents of this manual, in
whole or in part, without written permission of
ABB, Inc., is prohibited.
Safety notices
Read this manual carefully before attempting to
install, operate or maintain this equipment.
Refer to the NEMA ICS 2.3 “Instruction for the
Handling, Installation, Operation, and Maintenance
of Motor control centers” for important safety
information. No information in this manual
supersedes the NEMA standards and codes related
to MCC installation, operation and maintenance.
Keep this manual available for the installation,
operation and maintenance of this equipment.
After installing the equipment, file these
instructions with other instruction books,
drawings and descriptive data for this equipment.
Using these instructions will facilitate proper
equipment maintenance and prolong its useful life.
Install the MCC within the design limitations
described in this manual. This equipment is
designed to operate within the current and voltage
limitations on the main nameplate. Do not use or
install this equipment in applications or systems
using current and/or voltages that exceed its
limits.
Follow your company’s safety procedures.
Do not remove covers, open doors or work on
equipment unless power has been turned off and
all circuits de-energized. All components should be
electrically disconnected by means of a visible
break, securely grounded and locked out, and
tagged in accordance with precautions stated in
ANSI Standard Z244.1 “Control of Hazardous
Energy – Lockout/Tagout and Alternative Methods”
and ISO Standards.
Personnel performing installation, operation or
maintenance work on the equipment should wear
the appropriate personal protective equipment.
Personnel installing, operating or maintaining this
equipment must have thorough knowledge of all
applicable local, regional, industry, governmental,
ISO and OSHA safety procedures. They must also
follow commonly accepted safe working practices
based on the potential hazards involved. Personnel
working in or around this equipment must use
common sense and good judgment regarding the
potential hazards to themselves and other
personnel in the area.
—
Important user information
