Combi 7720 Manual de instrucciones descargar pdf (Pagina 21)

XXI. REPAIR TABLE (Continued)

COMPONENT INSTRUCTIONS

LENS REPLACEMENT 1. Remove any cartridges and/or lters from the con-

nectors.

2. Use a 5/32 inch Allen wrench to remove the two

rim screws.

3. Gently separate the rims from the facepiece.

4. Pull the silicone skirt away from the lens.

5. Remove the nozzle cover as described above.

6. Remove the nozzle as described above.

7. Remove the connectors and twin seals as de-

scribed above.

8. Install new twin seals and connectors into the

new lens as described above.

9. Replace the nozzle o-ring and inspect the exhala-

tion valve.

10. Install the nozzle and cover as described above.

11. Place the lens edge inside the lens channel of

the skirt.

12. Knead the skirt until the silicone ts evenly around

the lens edge.

13. Install the rims. Start the screw on one side,

then the other.

CAUTION—Do not pinch the silicone be-

tween the rims.

14. Alternate tightening each screw until rmly tight-

ened. Do not overtighten.

15. Perform a facepiece t check as described in

section VII.

EXHALATION VALVE 1. Remove the nozzle cover as described above.

2. Remove and discard the old exhalation valve.

3. Insert a new valve and pull the valve stem until it

snaps into place.

4. Replace the nozzle cover as described above.

5. Perform a facepiece t check as described in sec-

tion VII.

ACCESSORIES Each modication kit and accessory purchased from

SPERIAN has installation instructions. Use these in-

structions for removing and replacing any accessory.

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Combi 7720 Manual de instrucciones Pagina 21