MGE UPS Systems Comet Series Installation And User Manual page 56

Comet 40 - 150 kVA Uninterruptible Power System
4.3 Replacement Parts
4 — 2
The technician or electrician
maintenance on the UPS must be familiar with the indicators,
controls, and operation of the UPS.
a. Isolate and de-energize all Comet UPS equipment for
all maintenance operations. Lock and tag all upstream
circuit breakers during maintenance.
b. Ensure that all equipment is clean and free of dust, dirt,
and debris. The exterior of the UPS enclosure may be
cleaned with a mild solution of soap and water, lightly
applied with a lint-free cloth.
c. Clean/replace the air intake filters, exhaust plates, and
the enclosure interior with a vacuum cleaner.
d. Initiate the start-up procedure, as described in Section III.
e. Test the main operating sequences as applicable to
your installation (see Section III ).
There are no user serviceable parts inside the Comet UPS.
Three levels of replacement parts are available for the
Comet. The three levels are designated A, B, and C. The
level that you should keep on hand for your installation will
vary depending on the type of maintenance planned on site,
and the configuration of your UPS system.
Having the replacement parts on hand will prevent any
unacceptable delays (because of time involved obtaining
spares) during critical periods, such as system start-up. Any
items used during start-up will be replaced by MGE at no
charge. Contact MGE Customer Support Services at 1-800-
438-7373 for specific recommendations. A description of
each level is provided below:
Level Description
A This level of replacement parts consists of consumable
items, specifically power and control fuses. It is
recommended to have these items on hand during
installation of the UPS systems, including initial start-up.
B This level of replacement parts is recommended when
the user can tolerate short-duration UPS down-time to
obtain replacement parts in the event of a major UPS
failure. This level of replacement parts consists of
consumable items, specifically power and control fuses,
fans, and the most critical circuit board assemblies.
C This level of replacement parts is recommended when
the user can tolerate only a minimum of down-time in
the event of a major UPS failure. This level of
replacement parts consists of consumable items,
specifically power and control fuses, fans, and a
significant set of circuit board assemblies.
Maintenance
performing preventive
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