Model 6 Motor Control Centers 80459-641-01E
Section 11—Troubleshooting 10/2012
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ENGLISH
Section 11—Troubleshooting
The following table lists problems encountered with MCCs, their causes,
and remedies. This table is of a general nature and covers only the main
causes of problems.
Misapplication of a device can result in serious problems; however, rather
than list this cause repeatedly below, note that misapplication is a major
cause of motor control problems and must always be questioned when a
device is not functioning properly.
Actual physical damage or broken parts can usually be quickly located and
replaced. Damage caused by water or flood conditions requires special
treatment. Contact your Schneider Electric field sales representative.
NOTE: Damaged, arc-rated MCCs must be inspected, repaired, and
re-qualified by Schneider Electric Services personnel to maintain the arc
containment ratings.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe
electrical work practices. See NFPA 70E or CSA Z462.
• This equipment must only be installed and serviced by qualified
electrical personnel.
• Turn off all power supplying this equipment before working on or inside
equipment.
• Always use a properly rated voltage sensing device to confirm power is
off.
• Replace all devices, doors, and covers before turning on power to this
equipment.
Failure to follow this instruction will result in death or serious injury.