Penlon AV-S, Service Manual, Page: 82 / 94

7. APPENDIX
APPENDIX 1
Care of Back-up Battery
CAUTION
Damage may occur if the battery is allowed to remain in a discharged
state.
Never discharge the battery to below 10.2 volts.
A. Battery installed in ventilator
The battery must be charged before the machine is released for use
with an 14 hour charge from the ventilator’s internal power supply
(ventilator connected to the mains supply, but not running).
Note that the mains power indicator on the front panel will show a
yellow light during charging.
Subsequently the recharge periods for a battery on a ventilator in
store are similar to those in B, below.
Batteries in machines in normal use will be kept charged by the
internal power supply.
Note that the Low Battery Alarm indicator may be displayed if
automatic recharging is taking place as the ventilator is in use.
B. Battery care/storage requirements.
During storage, batteries will require a periodic recharge, the
frequency of which is determined by the storage temperature,
which must not exceed 50oC (120oF).
Storage Recharge
temperature period
38 to 50oC (100 to 122oF) 1 month
21 to 38oC (70 to 100oC) 3 months
7 to 21oF (45 to 70oF) 6 months
0 to 7oC (32 to 45oF) 9 months
-5 to 0oC (23 to 32oF) 12 months
Duration - recharge until the charge current is less than 25 mA
(typically overnight).
It is recommended that at each charge an updated label is affixed
to the unit to indicate date of the last charge.
C. Disposal of used batteries
Follow all hospital, local, state and federal regulations.
Note
Removal/replacement of battery must only be undertaken by a trained
technician
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