Rockwell Automation CENTERLINE Motor Control Center Servicing Flooded Equipment User Manual

Instructions

CENTERLINE® Motor Control Centers
Servicing Water Damaged Equipment

ATTENTION

!

Water-damaged Rockwell Automation electronic and electro-mechanical products normally are
presumed to be beyond repair. Damage can result from immersion, submersion or exposure to
excessive moisture brought about through flooding, fire fighting activities, hurricanes, sewage
overflows, and the like. Due to potential problems with water-borne sediments and contaminants,
damage to insulating materials, and rust and corrosion to metal parts, users should replace the
affected products in total or take other action as described in the following table:

Type Examples Required Action

Electronic products Programmable controllers, I/O

cards, drives, video displays

Normally
non-repairable
electro-mechanical
products

Normally repairable
electro-mechanical
products

Mechanical products Metal cabinets and enclosures,

Push buttons, relays, small
contactors, limit switches

Motors, large contactors,
starters

sheaves, couplings, bushings,
belts, gear reducers and
mounted bearings

Remove product from service and scrap or
discard.

Remove product from service and scrap or
discard.

Product may be repairable in some instances,
as determined by Rockwell Automation on a
case-by-case basis. Otherwise, remove
product from service and scrap or discard.

Return the product to service only following
proper cleaning, re-lubrication, repair or
replacement of any damaged components,
and inspection. Where applicable, qualified
personnel should conduct appropriate
electrical insulation resistance testing to
ensure that products and associated field
wiring are free from short circuits and
grounds.

On a normal for-fee basis, users should forward affected repairable products to an appropriate
Rockwell Automation service and repair facility for evaluation, assessment of repair costs, and
possible reconditioning following the Company's regular factory repair or remanufacturing
procedures. Users should call their local Rockwell Automation office or applicable authorized
product distributor for assistance in locating an appropriate service and repair facility and to receive
an estimate of applicable inspection and repair charges.

Users should scrap or discard all affected non-repairable products and components in a way that
eliminates the possibility of their reuse by anyone, as well as in compliance with applicable
hazardous waste and environmental laws and regulations.

Users should assume that water-immersed Rockwell Automation equipment has been damaged, and
Rockwell Automation cannot warrant or take responsibility for any damaged equipment, regardless
of its original manufacturer's warranty. Products subsequently repaired or reconditioned by
Rockwell Automation will be warranted in accordance with the Company's then current published
repair warranty.

For further important safety information refer to the NEMA publication entitled “Guidelines of
Handling Water-Damaged Electrical Equipment.”
www.nema.org/stds/water-damaged.cfm#download

1 Publication 2100-IN063A-EN-E—October 2005

2 CENTERLINE® Motor Control Centers Servicing Water Damaged Equipment

Introduction

Instructions

The intent of this publication is to provide guidance for servicing Bulletin
2100 CENTERLINE Motor Control Centers that have been water damaged.
It is the general recommendation of Rockwell Automation that water damaged
equipment be replaced. However, in the event the user chooses to put the
water damaged equipment back into service, this publication provides
guidance restoring the motor control center.

Water damaged equipment is assumed to have been damaged.
Therefore, Rockwell Automation cannot warrant the product or take
responsibility for repaired damaged equipment.

Motor Control Center Units

Motor control devices and components are assumed to have been water
logged and damaged.
Due to potential problems because of sediments left in the components,
contaminated insulating materials and rust or corrosion to metal parts, it is
necessary to replace the items in total. Thus, plug-in unit inserts must be
replaced with new units. Water logged frame mounted controller sections must
be replaced with a new frame mounted controller sections.

Motor Control Center Sections

It is recommended that water damaged motor control center sections be
replaced. However, should the decision be made to restore the motor control
center sections, follow the steps outlined below.

For assistance ordering replacement MCC units and section, contact Rockwell
Automation or your local Allen-Bradley distributor.

ATTENTION

To prevent injury or death to personnel servicing equipment,
make sure that the motor control center remote power
source(s) is disconnected and the respective disconnect(s) is
locked in the OFF/O position.

!

1. Remove all water damaged plug-in units and properly discard. (For
removal of units, refer to the Installing and Removing Plug-in Units section
of CENTERLINE Motor Control Center Instruction Manual,
publication number 2100-IN012x-EN-P.)

Publication 2100-IN063A-EN-E—October 2005

2. Open doors, remove covers and disassemble motor control center to
permit access to the horizontal and vertical bus.

CENTERLINE® Motor Control Centers Servicing Water Damaged Equipment 3

3. Wash down (hose down under moderate pressure) the motor control
center and the various parts with clean water. Do not use any cleaning

solvents.

4. Dry out the motor control center. It is recommended that heated dry air

be used. The temperature of the air should not exceed 85

o

(approximately 190

F).

o

C

Additional assistance is available from service companies that specialize
in airing and drying out water damaged equipment.

5. Reassemble the motor control center after it has been thoroughly dried
out. For additional assistance in reassembling the motor control center,
contact Rockwell Automation Global Manufacturing Solutions to
arrange for field service or others who specialize in water damaged
equipment restoration or replacement. Contact the Low Voltage Motor
Control Center Post Shipment Support for replacement parts.

6. Conduct an electrical bus insulation resistance test to make sure the
motor control center and field wiring are free from short circuits and
grounds. Conduct this test using an insulation resistance tester (megger)
with a potential of 500-1000 volts.

This test should be conducted phase-to-phase, phase-to-ground and
when applicable, phase-to-neutral. Typical insulation resistance values
are 50 megohms or greater. Next, check the field wiring; for example,
motor cables and/or incoming line cables.

NOTE: The insulation resistance values are affected by dampness
which may cause a considerably lower insulation resistance reading. If
this is the case and insulation resistance values are below one megohm,
it is recommended that the equipment be dried out a second time. Dry
out the motor cables by injecting a low voltage current. When the
equipment is dry, repeat the insulation resistance test. The minimum
accepted value for insulation resistance is one megohm.

7. Install the replacement plug-in units. (For installation of units, refer to
the Installing and Removing Plug-in Units section of CENTERLINE Motor
Control Center Instruction Manual, publication number
2100-IN012x-EN-P.)

Publication 2100-IN063A-EN-E—October 2005

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Publication 2100-IN063A-EN-E—October 20054 Copyright © 2005 Rockwell Automation, Inc. Printed in the U.S.A.