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Joined: Wed Dec 24, 2014 1:14 pm

why always at jop setup you have to remove battary cover

Sun Nov 26, 2017 11:30 am

some times when start to work on a320 at any system will requist loss the nuts of battary cover even if the work not related to electric system, why ? it due to static electric.
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Joined: Thu Mar 23, 2017 7:30 pm

Re: why always at jop setup you have to remove battary cover

Fri Dec 01, 2017 7:09 am

The A320 uses NiCad batteries (main batteries are 2x23Ah, IIRC). Removal of the battery cover is to allow inspection of the battery cases (if the charging rate is too high, the cases can swell and even split from heat, allowing alkali (potassium hydroxide) escape ... very bad). I have no clue about simply loosening the case nuts.

When charging, "The battery cover is off during charging to allow visual monitoring and to increase ventilation." ... 00-33A.pdf

Note the FAA caution (Sec. 3, ln 3-5) about batteries charged directly from the DC bus... which is the system used in the A320. p.10

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