Exhalation valve, S-MASK

1. Disconnect the breathing valve.
2. S-Masks delivered after 2006-05-01:
   Release the locking pin on the left side of the mask (as worn) by first turn the locking pin one half turn (180º) [Picture 1] and then by using your thumb to push the locking pin upwards until it releases the exhalation cover. [Picture 2]
   For older masks:
   It may occur that the locking pin is not turned in to its locked position. In such cases the locking pin can be pushed up without first turning it.
3. For S-Masks with first breath activation push the locking pin on the right hand side (as worn) upwards until it releases the exhalation cover. [Picture 3]
4. Remove the exhalation valve. For ambient air hatch version push down the indicator arm to release the exhalation valve.
5. Wash the exhalation valve in lukewarm water (max. 40°C) with a mild detergent to remove dirt. Check that there are no remnants of dried body fluids.
6. Disinfect exhalation valve following the instruction supplied with the disinfectant.
7. Rinse the exhalation valve carefully with clean water.
8. Let the parts dry.
9. Mount the exhalation valve, beginning at the right hand side (as worn). For version with ambient air hatch, the indicator arm must be pushed down when the exhalation valve is inserted.
10. Mount the locking pin(s). Make sure that the locking pin on the left side (as worn) is turned so that it will be secured in the notch on the mask [Picture 1].
    It is recommended to replace the locking pin with the new version of locking pin with grooved edge (part no. 460 190 374).
11. For version with ambient air hatch, operate the hatch mechanism several times to check the functionality. For version with first breath activation, check that the exhalation valve is firmly secured to the face mask.

Exhalation valve, S-ESA, S-PE and S-N

1. Disconnect the breathing valve.
2. For S-ESA only, unscrew the ESA adapter. [Picture 4]
3. Push at the locking tabs on each side of the exhalation valve cover to release it. [Picture 5]
4. Remove the exhalation valve assembly. [Picture 6]
5. Wash the exhalation valve in lukewarm water (max. 40°C) with a mild detergent to remove dirt. Check that there are no remnants of dried body fluids.
6. Disinfect exhalation valve following the instruction supplied with the disinfectant.
7. Rinse the exhalation valve carefully with clean water.
8. Let the parts dry.
9. Place the pin of the exhalation valve assembly back in the hole in the mask connector. [Picture 6]
10. Place the outer end of the exhalation valve spring in the circular cavity on the inside of the exhalation valve cover. Now move the exhalation valve cover towards the mask and hitch the cover onto the connector by first inserting the upper “hook” of the connector into the middle hole (in the upper part) of the valve cover. Then push the lower part of the valve cover towards the connector until the two locking tabs on both sides lock into position. [Picture 5]
11. For S-ESA only, screw the ESA adapter back in the connector. [Picture 4]

Breathing valve

1. Disconnect the breathing valve.
2. Unscrew the cover of the breathing valve and remove the positive pressure spring. [Picture 7]
   NOTE: S-N is a negative pressure breathing valve and has therefore no positve pressure spring.
3. Unscrew the locking nut of the breathing valve and remove the valve insert. [Picture 8]
4. Clean the cover, locking nut, positive pressure spring and the outside of the diaphragm and diaphragm ring in lukewarm water (max 40°C) and a mild detergent. Wipe the valve housing with a cloth and lukewarm water (max. 40°C) with a mild detergent to remove dirt.
5. Disinfect the inside of the diaphragm and valve housing with a disinfectant. Pour the disinfectant in the valve housing and wobble it around [Picture 9]. Wipe the inside of the exhalation pipe with a cloth and disinfectant.
6. Rinse the cover, locking nut, positive pressure spring and the outside of the diaphragm and diaphragm ring in clean water. Wipe the valve housing with a cloth and clean water.
7. Dry the parts thoroughly. If possible, use low compressed air to dry the inside of the valve housing and diaphragm. Blow carefully to not remove the diaphragm from the housing.
   
   ATTENTION! When cleaning the breathing valve it must be completely dry before it is assembled and put back into service. Remaining water can form ice on vital parts resulting in malfunction of the breathing valve.
   
   
8. Push the diaphragm against the valve housing. Mount the valve insert, ensure that the lever is correctly located between the diaphragm plate and the roller and at 90° to the roller. Screw on the locking nut. [Picture 10 & 11]
9. Place the positive pressure spring on the diaphragm and screw on the cover.
   
   NOTE! S-N is a negative pressure breathing valve and has therefore no positve pressure spring.

ATTENTION! After the extended cleaning and disinfection procedure perform a function test of the mask and breathing valve as described in Interspiro Test Instructions.