Page 42
MAINTENANCE
NOTE: Refer to the SAFETY section of this
manual for important information.
After disconnecting and locking out incoming
power and before performing any maintenance,
it is recommended that a safety ground be
connected to the main power bus (Fig. 53).
After maintenance is complete, perform the
checks in the
CHECK
section of this manual before restoring power.
The following pages detail maintenance
procedures recommended for Toshiba JK
medium voltage controllers.
In general, the
following items should be included on the
maintenance checklist:
Cleaning
Checking and tightening of electrical
connections
Checking of fuses and fuse clips
Proper installation of any removable
barriers
Vacuum contactor maintenance
The information presented here is intended to
cover preventive maintenance only. It does
not cover major rework or repair. The
following MAINTENANCE SHOULD BE
PERFORMED AT LEAST ANNUALLY or more
frequently depending on operating conditions.
GENERAL INSPECTION (Fig. 54)
Thoroughly
clean the equipment,
removing all dust, dirt and other
accumulations. Wipe insulators clean
using a clean, dry cloth. Do not use
petroleum-based solvents or cleaners.
Check for any signs of moisture inside
the enclosure. If there are signs of
dripping water entering the enclosure,
eliminate the source. Thoroughly dry
any insulation which shows signs of
wetness and repeat the dielectric test
procedure given in the
ENERGIZATION CHECK. Replace
insulators, if necessary.
Fig. 53 Attaching Safety Ground
Fig. 54 General Inspection
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
To Next Page
Loading...
