CP32 Battery Backup: Power Failure

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CP32 Battery Backup: Power Failure


Southland Perfusion:  Policy and Procedure Guidelines



In the event of a pump failure, two emergency back-up modalities exist. The first choice for emergency backup is operation of the pump by battery power source. These procedures are discussed in detail in the following paragraphs (Table 1). The second choice of backup is manual pump operation utilizing hand crank systems. Emergency backup modalities should be implemented immediately once a pump failure has been recognized by the perfusionist. Backup operation should be continued until the problem has been rectified, pump has been replaced, or patient has been weaned from bypass. Any failed equipment must be removed from service immediately and labeled defective with the time, date, and nature of the problem. A perfusion supervisor should be promptly notified and an incident report should be filled out according to hospital policy and procedures.


A. Jostra Pump

Turn on the master power switch on the console O. Turn on the monitor system switch M on the lower left face of the pump console. Make sure the console is plugged in and confirm that all circuit breakers in the rear of the pump are in the on position. The yellow “C” light indicates the battery is charging . The yellow “B” light means the console is being powered by the backup battery (see the Jostra operator’s manual, battery section). Note, batteries only charge when console base is plugged in and turned on. Turn on the power button for the individual pump head being used (e.g. P1 , P2, etc.). Set the pump mode to Arterial (art) and set the tubing size to the appropriate tubing being used in the arterial raceway .

Warning : Do not cover the console when connected to the mains; restricted air flow may overheat batteries

Jostra Rotaftow system automatically switches to battery operation when the external power supply (mains voltage or Jostra Heart-Lung machine console) is interrupted. If power returns, the Rotaflow system switches back to the external power supply. New, fully charged batteries at 5LPM and normal load will provide approximately 1.5 h of operation.

Battery voltage during battery operation, the status display flashes “BAT XXX” (XXX: current battery voltage) , and the acoustic alarm sounds during battery operation.

1 . 27.4 Y (fully charged battery) >20.0Y. The acoustic alarm can be switched off with the “audio off’ button.

2. 20.0Y greater than 19.0Y. The speed and flow display flashes “LOW BAT” and the acoustic alarm cannot be switched off.

3. 19.0Y. The system switches off.

Warning: When the voltage has sunk to 20.0V, there is only power left for a very short time.

B. Bio-Medicus Battery Backup

The Bio-Medicus console switches automatically to battery backup when alternating current (AC) power is lost. Check all plugs and outlets in the event of loss of AC power. A LED “AC power off’ alarm will illuminate when the console switches to battery mode. An audible alarm will accompany battery operation (do not override this alarm). Several factors affect battery life. A new, fully charged battery at a flow of 3.5-4.5L/min, a Hct of 42%, and 3,500 RPMs will last 29 min, at 3,000RPMs 39min, and at 2,500RPMs 59min. Note that the round metal plug at the rear of the console must remain inserted for battery operation .

C. Sarns 8000 Modular system

After the system has completed its startup tests, check the battery indicators while using AC power. A green indicator light signals that the battery charger is functioning . Both DC indicators should be off, as the battery supply is not being used. The three battery supply indicators should be off, as the battery supply is not in use. When the system begins operating in battery backup, both direct current power supply indicators will light, the battery supply indicator will light green, yellow, and red, and every 2 min a short audible tone will sound. The battery supply indicators are a relative indication of the operating time available to use battery power. Green indicates that the battery supply is charged, yellow indicates that the battery power is dropping, and red indicates a discharged battery. A fully charged battery will operate 2 pumps for 25min or 1 pump for 40min. If possible , decrease the number of devices dependent on the battery to prolong its life. Turn off the light, place the cardioplegia pump in stop mode, etc. Leave the safety monitors on. The battery backup is automatic when AC power is lost.

D. The Abiomed BVS 5000

Internal battery power is automatically activated whenever AC power is interrupted. The battery will last for 1h when fully charged. The BATTERY ON message is displayed whenever battery power is engaged. When operating on battery power and less than 10min of charge remains, BATTERY ON LOW is displayed. If the battery has less than 80% capacity, the BATTERY CHARGING message is displayed .

E. The Heartmate TCI Assist Device Console

The Heartmate console will operate on battery automatically when AC power is interrupted . The message “BATT” appears in the lower right quadrant of the display. Fully charged batteries will operate the console for at least 15 min. This is a conservative rating for battery function. When approximately 10min of power is left, the LO BATT message will appear in the lower right of the display and the audio alarm will sound. To recharge the battery, plug console in and make sure white circuit breaker switch is in AC on position 1.

F. The Datascope System

The system will operate on battery automatically when removed from AC power. When the charge light is illuminated, the battery is charging . If the charge light is flashing, less than 30 min of portable time is available on the battery. The battery on the 90T has approximately 2 h of portable time when the battery is fully charged. Fully depleted batteries will require approximately 24 h for return to full charge. The flashing charge light will remain steady when the batteries are at full charge. A fully charged battery on the system will last approximately 50-95 min. The CS 300 wil1last about 3 h on battery.

G. Thoratec Ventricular Assist Device

Low battery alarms when the module batteries have less than 30 min of power remaining. The AC light (yellow) should always be on unless the console is unplugged from an electrical source during patient transportation or ambulation . The battery light flashes when the console is unplugged from the electrical outlet. Uninterruptable Power Supply (UPS) status panel is displayed on the lower front portion of the console and provides approximately 40 min of battery time. When the UPS is operating during transportation, or power outage, it gives a brief audible signal every few seconds. As discharge of the battery continues, four green battery lights disappear one at a time. A red battery alarm light and continuous audible alarm indicates less than 5 min of UPS battery operation. The UPS AC light should be on unless the UPS is in use.

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