Air filter
Air filter cover
Maintenance checklist
9 Inspect the water tub and flip lid seal for wear and deterioration.
9 Replace the water tub if any component is leaking or has become cracked, cloudy or pitted.
9 Replace the flip lid seal if cracked or torn.
9 Clean white powder deposits in the water tub by using a solution of one part household vinegar to 10
parts water.
Reassembling and filling the water tub
1. Place the tub lid back onto the base.
2. Clip all four side latches.
3. Fill the water tub with distilled or deionized water up to the maximum water level mark.
4. Return the water tub to the H5i.
5. Close the flip lid ensuring that it clicks into place.
Replacing the air filter
Replace the air filter every six months (or more often if necessary).
1. Remove the air filter cover from the back of the S9 device.
2. Remove and discard the old air filter.
3. Insert a new ResMed air filter
ensuring that it is sitting flat in
the air filter cover.
4. Replace the air filter cover.
Notes:
• Ensure the air filter and air filter
cover are fitted at all times.
• Do not wash the air filter. The air
filter is not washable or reusable.
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