Nidec LSA 52.3 - New Varnish Application; Terminal Box; Spare Parts

Electric Power Generation
Installation and maintenance
5382 en - 2022.11 / h
LSA 52.3 / LSA 53.2 / LSA 54.2
Industrial Range Alternators
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5.12 NEW VARNISH APPLICATION
CAUTION:
A NEW VARNISH APPLICATION SHOULD ONLY BE
CONSIDERED IF IT IS ABSOLUTELY NECESSARY. A
NEW APPLICATION OF VARNISH MADE ON A COIL
WHICH IS STILL DIRTY OR NOT PERFECTLY DRY CAN
RESULT IN A DEFINITIVE LOSS OF INSULATION.
5.13 TERMINAL BOX
CAUTION:
DAMPER PADS SHOULD BE CHECKED
PERIODICALLY AND REPLACED EVERY FIVE YEARS.
CAUTION:
BEFORE ANY INTERVENTION ON THE ALTERNATOR,
MAKE SURE THAT STARTING CAN NOT BE
ACTIVATED BY ANY MANUAL OR AUTOMATIC
SYSTEM.
CHECK THAT ALL LOCKS ARE ACTIVE AND FOLLOW
SITE SAFETY PROCEDURES.
Damper pads must not show any cracks. If a crack is
detected, or if the replacement period has come to term,
change the pads for new ones.
Change of pads:
Lift the terminal box using the jack screw (item “2”).
Loosen the 8 M10 screws (item “1”).
Remove the block from the pad assembly (item “3”).
Remove the M10 nut from the damper pad (item “4”) to
remove the lower plate.
Unscrew the damper pad from the top plate.
Mount a new damper pad (part ref: 13 160 700 015) on the
upper plate and rest the lower plate with its nut M10 (item “4”).
Place the damper block between the terminal box and the
stator bracket (item “5”) and fit the screws (item “1”). Do not
tighten to torque at this stage.
Loosen the jack screw (item “2”) so as to obtain a clearance
at the end of the screw on the order of 5 mm.
Tighten all fastening screws (8 screws on each damper block;
item ‘1’) to their nominal torque (according to Chapter 5.6.1).
The four damper pads (one at each corner of the terminal
box) must be changed at the same time.
5.14 SPARE PARTS
LSA 52.3
LSA 53.2
LSA 54.2
Emergency kit
AREP/PMG
5178320 5084565 5084580
Single-bearing kit 5084681
Two-bearing kit 5084677
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