Installing the Air Filters
CauTion: A properly installed, undamaged gray foam filter is required for proper operation.
The device uses a gray foam filter that is washable and reusable, and a white ultra-fine filter that is disposable. The
reusable filter screens out normal household dust and pollens, while the ultra-fine filter provides more complete
filtration of very fine particles. The gray reusable filter must be in place at all times when the device is operating. The
ultra-fine filter is recommended for people who are sensitive to tobacco smoke or other small particles.
The reusable gray foam filter is supplied with the device. A disposable ultra-fine filter may also be included. If your
filter is not already installed when you receive your device, you must at least install the reusable gray foam filter
before using the device. To install the filter(s):
1. If you are using the white disposable ultra-fine filter, insert it into the filter area first, mesh-side facing in, towards the device.
2. Insert the required gray foam filter into the filter area after the ultra-fine filter.
note: If you are not using the white disposable filter, simply insert the gray foam filter into the filter area.
Connecting the Breathing Circuit
To use the system, you will need the following accessories in order to assemble the recommended circuit:
• Respironics interface (nasal mask or full face mask) with integrated exhalation port, or Respironics interface with a
separate exhalation device (such as the Whisper Swivel II)
WaRninG: If you are using a full face mask (a mask covering both your mouth and your nose), the mask must be
equipped with a safety (entrainment) valve.
• Respironics 22 mm flexible tubing, 1.83 m (6 ft.) (optional Respironics 15 mm tubing for compatible devices)
• Respironics headgear (for the mask)
WaRninG: If the device is used by multiple persons (such as rental devices), a low-resistance, main flow bacteria filter
should be installed in-line between the device and the circuit tubing to prevent contamination.
To connect your breathing circuit to the device, complete the following steps:
1. Connect the flexible tubing to the air outlet on the side of the device.
WaRninG: If you are using the optional Respironics 15 mm tubing, the device tubing type setting must be set to 15. If
your device does not have the tubing type setting, you must use the Respironics 22 mm tubing.
note: If required, connect a bacteria filter to the device air outlet, and then connect the flexible tubing to the
outlet of the bacteria filter.
note: When using the bacteria filter, the device performance may be affected. However, the device will remain
functional and deliver therapy.
2. Connect the tubing to the mask. Refer to the instructions that came with your mask.
3. Attach the headgear to the mask if necessary. Refer to the instructions that came with your headgear.
Where to Place the Device
Place the device on a firm, flat surface somewhere within easy reach of where you will use it at a level lower than your
sleeping position. Make sure the filter area on the back of the device is not blocked by bedding, curtains, or other items.
Air must flow freely around the device for the system to work properly. Make sure the device is away from any heating
or cooling equipment (e.g., forced air vents, radiators, air conditioners).
CauTion: Do not place the device directly onto carpet, fabric, or other flammable materials.
CauTion: Do not place the device in or on any container that can collect or hold water.
Supplying AC Power to the Device
CauTion: Condensation may damage the device. If this device has been exposed to either very hot or very cold
temperatures, allow it to adjust to room temperature (operating temperature) before starting therapy. Do not
operate the device outside of the operating temperature range shown in the Specifications.
WaRninG: Be sure to route the power cord to the outlet in a way that will prevent the cord from being tripped
over or interfered with by chairs or other furniture.
WaRninG: This device is activated when the power cord is connected.
IMPORTANT: If you are using your device with a humidifier, refer to the instructions included with your
humidifier for details on how to power the device and humidifier.