Hawker F20/4H1C-R Operating And Maintenance Manual page 29

27. Allow the battery to soak to room temperature, which can take up
to 8 hours
28. Recharge the battery using either 28.1, or 28.2 or 28.3
• Adjust the electrolyte level at a current of 0.2*I
minutes prior to end of the charge methods, 28.1, 28.2, and 28.3
• Afterwards measure the voltage on each cell prior to the end of
charge at 0.2*I
1.
Requirement: cell voltage shall be ≥ 1.56 V.
• Record cells end of charge voltages in the logbook.
ATTENTION:
• Don't charge the battery with currents higher than I
• If you can't fully supervise, don't use method described in 28.3.
28.1 IUI charge – method (Appendix 1).
• Charge the battery at I until voltage has increased to 1.55V times
1
number of cells and charge for 2 hours at 0.2*I
• After about 1 hour charge, check that battery has reached the
voltage level to switch the charge current to 0.2*I
28.2 I charge method (Appendix 2).
• Charge the fully discharged battery for seven hours at 0.2*I
28.3 II charge method (Appendix 3)
• Charge the fully discharged battery with parameters selected from
the table below and afterwards charge for two hours at 0.2*I
• Check battery current switching to 0.2*I
presented in the table below.
current
0.4*I
1
0.6*I
1
0.8*I
1
29. Measure the electrolyte density on cells in accordance with
Task 8.4.
30. Refit the vents on the cells between 1 hour and not later than 24
hours after charge.
31. Refit the lid on the battery case.
32. Measure the insulation resistance in accordance with Task 8.3
Requirement: Insulation resistance ≥10 MΩ.
33. Release the battery to service, or if required in accordance with
Task 3.3.
The document reference is online, please check the correspondence between the online documentation and the printed version.
15 minutes to 10
1
1
1
.
1
at the stage 1(max) time
1
Stage 1 time (max)
180
120
90
.
1
1
If less than 10 MΩ, remove the lid and allow the battery to stand
for 24 hours in a dry ventilated environment.
29