Step 1 -Examine the mask system and familiarise yourself with its components.
Step 2 -Disassemble the mask as per User Guide instructions.
Step 3 -Examine the headgear by checking and pulling lightly on its straps.
Step 4 -Examine the elbow inside and out for damage, paying attention to the inner flaps and vent holes.
Step 5 - Examine the frame on both sides for cracks and damage.
Step 6 -Examine the cushion inside and out for tears and damage.
Step 7 - Reassemble the mask as per User Guide instructions.
These instructions are for general information purpose only. For full details consult the user guide.