CSP-HMI-3MD Helicopters, Inc.
MAINTENANCE MANUAL
[ Main Menu ]
[ HMI−3 Book TOC ]
[ Chapter 96 TOC ]
96-05-00
Page 205
Revision 8
The information disclosed herein is proprietary to MD Helicopters, Inc.
Neither this document nor any part hereof may be reproduced or transferred to
other documents or used or disclosed to others for manufacturing or any other
purpose except as specifically authorized in writing by MD Helicopters, Inc.
Copyright © 1999−2016 by MD Helicopters, Inc.
(7). Allow battery to rest for minimum of 1
hour and maximum of 2 hours; adjust
electrolyte level per Battery Servicing
Procedure.
(8). If electrolyte level is adjusted, recon
nect battery to charger and allow
battery to continue charging for 30
minutes.
If battery temperature exceeds
room temperature during initial
charging, battery temperature must be al
lowed to decrease to room temperature be
fore charging second time.
(9). After allowing battery temperature to
decrease to room temperature, repeat
procedures described in steps (2). thru
(8). to cycle battery a second time.
NOTE: When making individual cell voltage
measurements the second time, voltage of
each individual cell must measure within
voltage limits specified in step (5). If voltage
of any individual cell does not measure
within specified voltage limits, cell must be
discarded. Replace defective cell according
to Battery Repair instructions.
(10). Switch charger off and then disconnect
battery from charger.
(11). Tighten cell filler vent caps.
7. Battery Inspection
(Ref. Figure 201)
(1). Ensure all electrical power is OFF.
(2). Remove attaching hardware and
battery from brackets and cover.
Prior to performing follow
ing operations; review Bat
tery Handling and Servicing Precau
tions.
(3). Inspect tops of cells for dust, dirt, white
powder or spewed electrolyte. (For
cleaning instructions refer to Battery
Cleaning.)
(4). Inspect receptacle bus strips, bus bars
and screws for security and evidence of
damage.
(5). Inspect cells for cracks, evidence of
overheating or other physical damage.
Inspect cell bus bars for acid contami
nation. Replace battery if any such
damage is detected.
Electrolyte level inspection
should be accomplished only
when battery has been fully charged and
then allowed to set for a period of 1 to 2
hours after charging. If helicopter has oper
ated for minimum of 1 hour or more of con
tinuous flight, battery may be considered
charged.
(6). Reinstall cover and secure with attach
ing hardware.
8. Battery Cleaning
(1). Check that master switch on instru
ment panel is OFF.
(2). Unlatch and raise pilot compartment
floor left access door; remove cover.
Use care to avoid damaging bat
tery temperature sensing wires
and switch connections during cleaning.
(3). Clean battery in accordance per
manufacturer's instructions (Ref. Sec.
01-00-00).
(4). Reinstall battery cover; lower and latch
floor access door.
9. Battery Electrolyte (Nickel−Cadmium)
Spillage Cleaning
Consumable Materials
(Ref. Section 91−00−00)
Item Nomenclature
N/A Boric acid
Electrolyte is a strong alka
line solution and is harmful
to skin and clothing. Wear protective
clothing that is used exclusively for
servicing nickel-cadmium batteries.
Neutralize and flush electrolyte from
skin or hands as described below.
(1). Where there is evidence of spewed or
spilled battery electrolyte, flush off
surface immediately with water (cold if
CAUTION
WARNING
CAUTION
CAUTION
WARNING
To Next Page
Loading...
