Replacing The Visor - Spirotek FM9000 Instrucciones Para El Uso

5. Maintenance and storage
5.1 Test for function and leak-tightness
If components have been replaced (visor, valve discs or speech diaphragm), a test for function and leak-
tightness must be carried out with an appropriate test device (e.g. Pro-Tester, code 141080). The test is also
done in case of a mask stored unused for a longer period, and at least once a year.
Check also that the faceblank has maintained its shape, the head harness is reasonably elastic, the visor and
the faceseal are undamaged, and that the valve discs and the speech diaphragm's O-ring are good and well in
position. Damage must be repaired.

5.2 Replacing the visor

The visor is available in polycarbonate or polycarbonate with a chemical-resistant and scratch-proof coating.
The material code is found at the left edge of the visor. Replace visor if damaged, dirty or scratched.
Material code is shown by an arrow:
1 (not in use)
2 hard coated polycarbonate (HC)
3 (not in use)
F polycarbonate (PC)
• Unscrew the screws (Torx 20), loosen the visor frames, and remove the visor (Fig. A)
•
Place a new visor in the faceblank groove (with the marking "UP" on the visor showing upwards). Align the
check marks of the visor and faceblank with each other (Fig. B).
•
Position the visor frames and tighten both screws (Fig. C).
•
Carry out the leak-tightness test (point 5.1).
5.3 Replacing the exhalation valve disc
•
Pull out the valve cover (Fig. D).
•
Separate the disc (yellow) from the valve body (pinch on the edge of the disc) (Fig. E).
• Replace the disc. Press lightly on the tip of the disc to secure a good fit (Fig. F).
5.4 Replacing the inhalation valve discs
•
Remove the rubber valve seat by pushing it with a finger from the inside of the mask (Fig. G).
•
Replace the disc (pass the tail through the central hole to the inside of the mask) (Fig. H).
•
Put the valve seat back to the bottom of the valve body (Fig. J). Do not press too tight (the disc comes
immobilised) because the disc must be free to move.
•
The valve discs of the inner mask are replaced similarly. Make sure that the rubber edge of the inner mask
comes in the valve seat groove.
5.5 Replacing the speech diaphragm
•
Remove the inner mask from around the speech diaphragm (Fig. K).
•
Press the clip to remove the speech diaphragm (Fig. L–M). To make assembly easier, moisten the O-ring
with water. Press the speech diaphragm into place.
•
Insert inner mask into place.
5.6 Replacing the harness buckle
• Press the buckle downwards (Fig. N).
•
Hold the buckle and twist the rubber endpiece through the gap to the other end of the buckle (Fig. O–P)
(the buckle rotates 180°).
• Remove the buckle (Fig. Q).
•
Assemble in reverse order.
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