Power-Style™ QED-2 Switchboards
Section 7—Maintaining the Switchboard
40
© 1988–2018 Schneider Electric All Rights Reserved
80043-055-13
ENGLISH
Section 7—Maintaining the Switchboard
Periodic maintenance of the switchboard includes cleaning, lubrication, and exercising
component parts. The interval between maintenance checks can vary depending upon
the amount of usage and environmental conditions of each installation. The maximum
recommended inspection interval is one year. This definition for periodic maintenance
applies throughout this manual, unless otherwise noted.
Always inspect the switchboard after a fault. (Refer to “Section 8—
Adverse Circumstances”, beginning on page 48). Service bulletins for the various
disconnecting and overcurrent devices mounted in the switchboard are available
through your local Schneider Electric representative.
General Inspection and Cleaning
1. Vacuum the switchboard interior to remove any dirt or dust deposits. Wipe all bus
bars, insulators, cables, etc., with a clean, dry, lint-free cloth.
2. Check the switchboard interior carefully for moisture, condensation build-up, or
signs of any previous wetness. Moisture can cause insulation failures and rapid
oxidation of current-carrying parts. Inspect all conduit entrances and cracks
between the enclosure panels for dripping leaks. Condensation in conduits can be
a source of moisture and must not be allowed to drip onto live parts or insulating
material. Take the necessary steps to eliminate the moisture and seal off all leaks.
3. Inspect the switchboard for any signs of overheating. Discoloration and flaking
of insulation or metal parts are indications of overheating.
NOTE:
If overheating occurs, be sure that all conditions that caused the
overheating have been corrected. Loose or contaminated connections can
cause overheating.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Inspect and perform preventive maintenance only on switchboards and
equipment that has been de-energized and electrically isolated (unless
otherwise specified). This helps ensure that accidental contact cannot be made
with energized parts.
• Follow safety-related work practices as described in NFPA 70E, Part II
at all times.
Failure to follow these instructions will result in death or serious injury.
NOTICE
CONTAMINATION HAZARD
• Do not use an air hose to blow out the switchboard. Dust can settle inside
relays and overcurrent devices, causing overheating and improper operation.
• Do not allow paint, chemicals, or petroleum-based solvents to contact plastics
or insulating materials.
Failure to follow these instructions can result in equipment damage.
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