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3.4 Supplying Power to the Device
The device can operate on AC or DC power.
Using AC Power
An AC power cord and power supply is included with the device.
1. Plug the socket end of the power cord into the power supply.
2. Plug the pronged end of the power cord into an electrical outlet that is not controlled by a wall switch.
3. Plug the power supply cord’s connector into the power inlet on the back of the device.
4. Ensure that all connections are secure.
5. There is an accessory clip that can be used to secure the power cord to prevent accidental disconnection. Route
the cords through the clip and secure the clip to the enclosure of the device using the supplied screw, as shown in
these four steps.
1
2
3
4
Note: Some devices have a locking-type power connector. To avoid damage to the connector, when disconnecting
the power cord, pull the connector at its base, not the cord, to disengage the lock.
Using DC Power
The device can operate from a 12 VDC lead acid battery using the Philips Respironics External Battery Cable. This
cable is pre-wired and properly terminated to ensure safe connection of an external battery to the device. Battery
operating time depends on the characteristics of the battery and usage of the device.
Due to a variety of factors, including battery chemistry, age, and use profile, the capacity of the external battery as
shown on the device display is only an estimate of the actual remaining capacity.
Refer to the instructions supplied with the External Battery Cable for detailed information on how to operate the
device using an external battery.
Device Power Source Indicators
There are many power source indicators on the device and the display screen. These indicators are described in
detail below.
AC Power Indicators
When AC power is applied to the device and the airflow is off, the green AC LED indicator on the Start/Stop button
lights. When AC power is applied and the airflow is on, the white AC LED indicator on the Start/Stop button lights.
DC Power Indicators
When DC power is applied to the device, battery symbols will appear on-screen to indicate the battery status. The
shading in the battery icon indicates the power remaining in the battery. Refer to the Display Symbols table in Section
4.9 for information on each battery symbol.