3. Added electrical test before repair
SAFT
COMPONENT MAINTENANCE MANUAL
1606-l
The first test charge can be unsatisfactory if the electrolyte level is
too low in some cells (the level is not adjusted until the end of this
charge). If you find defects, do a second test:
- Charge the battery (Refer to one of the procedures given in
"DESCRIPTION AND OPERATION", paragraph 2.A (21, for a fully discharged
battery). At the end of the total charge time, continue to charge at
1.6 amps for 5 more hours. Regularly write the voltage and temperature
of the cells.
The temperature of the cells that have damaged separators increases
very much and continuously. The voltage of these cells continuously
decreases to less than 1.50 volt.
NOTE: When you charge the battery more than necessary, you decrease the
life of the cells. Thus, do this special test only if:
- A battery malfunction occurred in the aircraft
- Defects were found during shop maintenance.
- Adjust the electrolyte level during the last one of the 5 last hours
of charge.
- Discharge at 16 amps down to 20 volts.
After this test, discard the defective cells:
- Cells with a voltage of less than 1.50 volt at the end of the charge
(precision 0.5%).
- Cells with a voltage that decreases to less than 1 volt before one
hour of discharge (during the last test discharge).
- Short-circuited cells (zero volt).
24-39-06
Page 602
Apr 01/92
The document reference is online, please check the correspondence between the online documentation and the printed version.
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