KE NESPACE KA Rectifier Control Unit Operation Manual English R 2016_07 V1_1
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5 - Rectifier Maintenance
5.1 Overview
The purpose of this document is to provide guidelines to test the rectifier and setup
measures to restore the rectifier to normal operation within a shortest possible time
when any fault occurs to the system. Enough field-replaceable spare parts must be
maintained on-hand to prepare for replacement of units or components that may fail in
the field. Even though the fault location and reason are detected under the guidelines of
this Manual, if field repair work is not possible, or a long period of time is needed for
repair, the faulty units should be replaced with a spare one held in reserve. This allows
the system alarm to be cleared quickly and efficiently to minimize technician time and
maximize system up-time.
Note: As this rectifier is powered by AC voltage, it naturally may cause electric shock. If
external battery banks are also used, this battery voltage is fed to the system even
during an AC failure event. Because of the AC and/or DC presence, safety measures
should be taken during rectifier shelf repair and maintainance.
5.2 Periodic Inspection of Rectifier Shelf, Modules, and System
To guarantee effective operation of the system, periodic inspection is required.
Periodic inspection should be carried out once every 6 months.
1) Take care not to block the air ventilation holes with dust, dirt, or other debris.
2) Check the cable connections and tighten as necessary.
3) Check if internal temperature of the site is maintained at the rated levels.
4) Visually check all rectifier operation states and alarm states.
5) Check the equipment rack floor mount is maintained and ensure there is not any
water leakage at or near the installation site for the rectifier system.
5.3 Adding Rectifier Module
To expand the system capacity, rectifier modules are hot-swappable so may be inserted
into vacant slots while the Rectifier Shelf is powered up normally.
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