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4 Test and calibration
4.8 Battery test
4-32
a.
b.
The Centiva/5 Plus internal back up battery has an expected life time of 24 months
under standard operation conditions (10 to 35°C). After 24 months this battery
needs replacement.
Note
When system is operated in extended temperature areas (10 to 40°C), such as
burn units, the expected life time is reduced and battery needs replacement after
12 months.
If in the meantime battery's capacity is doubted, perform the following test to verify
proper battery capacity. A stop watch is needed.
1. Connect AC line supply to Centiva/5 Plus.
2. Turn ON Centiva/5 Plus and wait for the power up test to terminate.
3. Set up Centiva/5 Plus with a breathing system and perform the system test.
4. Start ventilation in default settings (Adult, Bi-Level) with a test lung (according
to section 4.2) connected.
5. Centiva/5 shows the operational screen. Check the battery status line to be
OFF as an indicator for a fully charged battery. If battery status line is active
wait until the battery is fully charged and the battery status indicator is OFF.
6. Turn OFF the AC line supply main switch to disconnect AC supply and start the
stop watch.
7. Centiva/5 Plus operates now on battery only. Be aware that during operation
and discharging the battery a high priority alarm for an empty battery will
appear.
8. Wait until either.
a. operation time is > 30 min
b. or a permanent alarm indicates a watchdog system failure "0036"
"battery empty and no line supply"
c. or Centiva/5 Plus automatically shuts down with a completely discharged
battery and then stop the stop swatch.
9. The operation time shown in the stop watch shall exceed 30 minutes.
a. If battery operation time is > 30 minutes, the battery is OK and can stay
within the Centiva/5 Plus until scheduled replacement has to take place
during standard maintenance.
b. If battery operation time is < 30 minutes perform battery refreshing
process, as described below.
TRM, Centiva/5 Plus, M1047448/CM-922026, rev. 3.50.a of 11/05
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