906-0731-01 Rev. J ZOLL Portable Critical Care Ventilator 5-9Internal Battery Change/InsertionTools needed:Phillips HeadScrewdriverWarning! Before attempting to replace the battery pack (ZOLL PN 703-0731-01), make sure thatexternal power is disconnected and the unit’s Power Switch is set to “OFF”.Procedure:Remove the four (4) 6-32 x 5/16 Phillips Pan Head screwslocated at the bottom of the unit. This will release theBattery Pack Compartment Cover and expose the BatteryPack and its integral mounting bracket.Remove the four (4) 6-32 x 2 1/4 Phillips Pan Head screws thathold the Battery Pack and its integral mounting bracket to theunit’s Lower Case.The unit’s Battery Pack is wired to a mating plug-and-socketconnector that remains electrically attached to the unit. Thismating connector includes a locking latch.While holding the Battery Pack in one hand, pinch theconnector plug locking latch while pulling outward. Thiswill release the plug from its mating socket and free theBattery Pack.Replace the old Battery Pack with a new Battery Pack.Align the plug, then insert the Battery Pack into its mating socket. The plug and socket arekeyed to protect against misconnection.Momentarily turn the unit’s POWER switch to its “ON”position to confirm operating power. A DISCONNECT Alarmwill sound.Turn the unit’s POWER switch to its “OFF” position.Secure the Battery Pack with its integral mounting bracket tothe unit’s Lower Case using the four (4) 6-32 x 2 1/4 Phillips Pan Head screws.Warning! Make sure that none of the Battery Pack wires get pinched between the bracket andcase enclosure.Align the Battery Pack Compartment Cover and secure it with the four (4) 6-32 x 5/16 PhillipsPan Head screws.Momentarily turn the unit’s POWER switch to its “ON” position to confirm operating power.A DISCONNECT Alarm will sound. Verify the charge status of the new Battery Pack. Turn theunit’s POWER switch to its “OFF” position. If required, place the unit on charge.