Chapter 6
BATTERY OPERATION AND MAINTENANCE
BATTERY OPERATION AND MAINTENANCE
The Infusomat® Space is equipped with the latest NiMH-battery. It has an operating lifetime of 4 hours at 100 ml/h when new. For optimal treatment of the battery, the device is equipped with protection against overcharge and deep depletion. The battery pack is charged by the pump during connection to mains. When disconnected from mains or in case of power failure, the pump automatically switches to battery power.
Note: Prior to a longer storage of the pump (> 0,5 months) the battery pack must be completely charged and then removed from the pump. Before changing the battery, always disconnect the pump from the patient and switch off the device.
The battery status indicator is a trend display (low, medium, high). For more detailed information on the current battery capacity (operating time in hours and minutes) please refer to menu item “Batt. Cap.” in the Status Menu of the Infusomat® Space.
Important information for battery self-check:
If the battery symbol is blinking during mains operation, the battery is either discharged or has a reduced capacity. In this case, the pump should not be disconnected from mains. If it is necessary to disconnect the pump from mains power for urgent reasons, the user should check to ensure if the battery capacity is sufficient for the proposed use. When the battery symbol blinks permanently (>1h), the battery must be checked by a technician and replaced if necessary.
Directions for optimal battery use:
The actual battery life may vary due to
• ambient temperature
• varying load (e.g. frequent boluses).
The optimal life time of a battery pack will only be reached if it's completely discharged from time to time. A maintenance mode which conducts this battery maintenance is built in. This function should be activated once a month. Furthermore:
• If possible, only charge the battery if it has been completely discharged.
•
If a battery, which is not completely discharged, is charged several times, its capacity can be reduced. Its original capacity can be reached again if the battery is completely discharged and then recharged.
•
Under normal temperature conditions a battery can be charged and discharged approx. 500 times before its lifetime decreases.
•
When the pump is not connected to mains power the battery discharges itself slowly. This can occur even when the pump is not operating. The original capacity will only be reached after several cycles of charging and discharging.
• The battery operating time only can be realized if the pump operates continuously with a fully charged battery at room temperature. The display of the battery operating time on the pump is an approximate value based on the current delivery rate. If the battery is aged it may differ from the actual achievable operating time.
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Chapter 6
BATTERY OPERATION AND MAINTENANCE
Caution: Batteries may explode or leak if they are opened or incinerated. Consider disposal directions!
Battery maintenance:
To accurately balance the battery capacity a cyclical battery maintenance is necessary.
The pump asks the user to perform a battery maintenance every 30 days. The battery maintenance mode detects a possible capacity loss (e.g. through ageing of the battery pack) and then the capacity/running time will be calculated anew. After a longer storage time or a longer operation without battery maintenance it can happen that the battery pre-alarm time can no longer be maintained. In this case it is necessary to perform a battery maintenance.
To initiate the discharge process the message „Battery maintenance“ and the k -key will be displayed after switching the pump off. By pressing k and u the discharge process will start. The process is interrupted by switching the pump on again. IIf the battery maintenance is to be continued a new activation is necessary. After completely discharging the battery it will be completely charged again. The total duration of the battery maintenance process takes approx. twelve hours.
Caution: Please take into account that, if the battery maintenance has not been completed there is a possibility of a reduced battery operating time.
