If you are using a nasal mask, try to keep your mouth closed during treatment. Air leaks from your mouth can decrease the effectiveness of your treatment. If mouth leaks are a problem, a full face mask or chin strap may help. Contact your clinician or equipment supplier for further details. If you are using a full face mask and you have problems trying to get a comfortable mask fit, contact your clinician or equipment supplier. You may benefit from a different size or style of mask. Anything special I should do before putting the mask on? Before wearing your mask, wash your face to remove excess facial oils. This will allow a better fit and prolong the life of the mask cushion. Do not use moisturiser when wearing a mask. My mouth feels dry during treatment—what can I do? You may experience dryness of the nose, mouth, and/or throat during the course of treatment, especially during winter. In many cases, a humidifier may resolve this discomfort. Contact your clinician for advice. My nose is irritated during treatment—what can I do? You may experience sneezing and/or a runny or blocked nose during the first few weeks of treatment. In many cases, nasal irritation can be resolved with a humidifier. Consult your clinician or equipment supplier for advice. Can I travel with the S8 Lightweight II? Your S8 Lightweight II has an internal power supply that enables it to operate in other countries. It will operate on power supplies of 100–240V and 50/60Hz. No special adjustment is necessary, but you will require an approved power cord for the region in which you are using the device. Please consult the medical services department of your carrier if you intend to use your S8 Lightweight II on an aircraft. The S8 Lightweight II complies with US FCC Part 15, Class B requirements. Note: Do not use your S8 Lightweight II while the aircraft is taking off or landing. Can I use my S8 Lightweight II if mains (AC) power is not available? A DC-12 converter is available to connect the S8 Lightweight II to a 12V or 24V DC power source. Contact your clinician for details. CAUTION ! The device should not be connected to both AC and DC power sources simultaneously. Troubleshooting If there is a problem, try the following suggestions. If the problem cannot be solved, contact your equipment supplier or ResMed. Do not attempt to open the device. Problem/Possible Cause Solution No display Power is not connected. Ensure the power cable is connected and the power switch (if available) is on. Displays error message: Exxxx Call Service (where xxxxdefines an error) or MOTOR FAULT Call Serviceor UPLOAD LANGUAGES Call Service or DATA LOST Call Service Component failure. Call service. Troubleshooting Insufficient air delivered from S8 Lightweight II Ramp Time is in use. Air filter is dirty. Air tubing is kinked or punctured. Air tubing is not connected properly. Mask and headgear are not positioned correctly. Cap(s) are missing from access port on mask. Pressure required for treatment may have changed. Wait for air pressure to build up or change ramp time. Replace air filter. Straighten or replace tubing. Check air tubing. Adjust position of mask and headgear. Replace cap(s). See your clinician to adjust the pressure. The following message is displayed on the LCD after you try to update settings or copy data to the Data Card: Card Error Remove Card Data Card is not inserted correctly. The Data Card is only partly inserted. You may have removed the Data Card before settings were copied to the S8 Lightweight II. The card is not a ResScan Data Card. Check that you are inserting the Data Card into the Data Card slot with the arrow facing up, while the S8 Lightweight II is switched on and not delivering therapy (standby mode). Ensure that the Data Card is inserted into the Data Card slot as far as it will go. Reinsert the Data Card and wait for the Settings Success Remove Card message to appear on the LCD. Only use a ResScan Data Card. The following message is displayed on the LCD after you try to update settings or copy data to the Data Card: Settings Invalid Remove Card The identification details on Contact your clinician immediately. the Data Card do not match the identification details on your device. The following message is displayed on the LCD after you try to update settings or copy data to the Data Card: Settings Error Remove Card There is a data error on the Contact your clinician immediately. Data Card. The following message is NOT displayed on the LCD after you try to update the settings using the Data Card: Settings Success Remove Card The settings were not Contact your clinician immediately. updated. Technical Specifications . Operating pressure range 4 to 20 cm H2O Dimensions (H x W x D) 112 mm x 164 mm x 145 mm Weight 1.3 kg Power Supply • Input range for S8 Lightweight II with HumidAire 4i:100–240V, 50/60Hz; 110V, 400Hz; 2.5A < 140VA (110W) (maximum power consumption). Instantaneous peak power consumption <340VA. • Refer to the DC-12 ...