28
18. Reassembly the battery
CAUTION:
Incorrect assembly harms the airworthiness of the battery and will
result in additional repair work. Use always the battery components
in accordance with the corresponding IPL.
• Fit the main connector into the battery case (if replaced)
•
Fit the thermostat harness assembly connector into the battery case
• Place the liners, the cells and dummy cells, packing pieces and
heater mats (if any) into the original positions of the battery case
according to the IPL
• Tighten the lower pole nuts with an calibrated torque wrench
according to the torque in table 1 of section 1.6.2
• Place intercell links on cells terminals
• If shown on the IPL, place the intercell links fixed to the thermostat
assembly on the terminals of the corresponding cells
• Place spring washers on the intercell links and screw upper nuts
on the pole threads
• Tighten the upper pole nuts using an calibrated torque wrench with
the torque issued in table 1 of section 1.6.2.
19. Refit the lid and test the insulation resistance as described in Task 8.3
20. Remove the lid.
21. Connect the battery to the charge/discharge unit.
22. Remove the vents.
23. Test the vent’s response pressure as detailed in Task 8.5.
24. Charge the battery for 8 hours at 0.2*I
1
as shown in Appendix 2
– commissioning charge.
Adjust the electrolyte level 15 minutes before the end of charge.
25. Stand the battery for 1 hour.
26.Discharge the 24V battery at I
1
to 20V
REQUIREMENT: The voltage of each cell after 48 minutes must be equal
/ greater than 1 Volt.
NOTE: If the discharge at the I
1
rate is not feasible, select a different
rate and criteria from the table below.
Record the cell voltages at the corresponding time indicated in column
2 in the log book.
Discharge current rate Time (min) cell voltage
reading
Voltage requirement
for cells (V)
0.2*I
1
240 ≥1.0
0.4*I
1
120 ≥1.0
0.6*I
1
80 ≥1.0
0.8*I
1
60 ≥1.0
I
1
48 ≥1.0
The document reference is online, please check the correspondence between the online documentation and the printed version.
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