4. OPERATING GUIDE - DISCHARGING
4.7
TEST COMPLETION AND ANALYSIS
The CA-1550 automatically completes the test with the set parameters. However,
it may be required to measure the individual cell voltages for nickel-cadmium
batteries during the test (see section 4.7.2).
I.
WAIT FOR DISCHARGE TEST TO AUTOMATICALLY
COMPLETE
During the test the battery voltage, discharge current, and elapsed
discharge times are displayed. The voltage will continuously decrease while the
current remains constant. The test completes when either the set
discharge time or the low cutoff voltage has been reached. An audible alarm
sounds and the displays freeze at their final values.
J.
1. IF TEST PASSED
The green Accept lamp illuminates. This
indicates the discharge has continued
through the duration of the set discharge time
(the red LED on the timer is off) without the
cutoff voltage being reached. The battery is
usually fit for service, after complete
recharge. See 4.7.1 and 4.7.2 for respective
battery type.
2. IF TEST FAILED
The Reject lamp illuminates if the discharge
has been discontinued because the cutoff
voltage has been reached before the
completion of the set discharge time. The red
LED on the timer remains on, but the time is
frozen at the elapsed time at which the test
failed. The battery is in need of reconditioning or
must be rejected for aircraft service. Refer to the
battery manufacturer's maintenance
manual on how to proceed.
4.7.1
LEAD-ACID BATTERY
If the lead-acid battery has been accepted by the CA-1550 discharge test it has
successfully completed the capacity test.
CA-1550 CHARGER / ANALYZER - OPERATING MANUAL LI-4159-CML Rev A
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