Maintenance Instructions; Parts List - Sperian COSMO Instrucciones De Uso

MAINTENANCE INSTRUCTIONS

Except for the changing of the speech diaphragm (14) and the mask connector (7), all maintenance operations can be performed without special tools.
Inhalation valve flap and connector gasket.
The inhalation valve flap (10) and the connector gasket (9) can be replaced by hand. Make sure that the valve (10) is correctly positioned.
Exhalation valve flap ("Negative pressure mask")
•
Unscrew (8) and remove the grid (11) of the mask connector (7).
•
Remove the old flaps (5).
•
Insert the new ones (5) and make sure that they are clean (no dust).
•
Clip and screw grid (11) on the mask connector (7).
Inner mask.
•
Remove the old inner mask (1).
•
Insert the new one (1), positioning the lower part into the groove of the screw (15) while maintaining the speech diaphragm (14).
Mask connector.
•
Remove the inner mask (1).
•
Cut the connector fixing ring (16) with a pair of pincers.
•
Change the connector (7) and make sure the face blank rubber is correctly positioned.
•
Tighten the new connector fixing ring (16) with SPERIAN pliers or possibly with a pair of nippers:
Visor.
•
Remove the neck strap (17).
•
Remove the screws of the visor clamps (3).
•
Slip visor (2) out of the mask by gently pulling away mask rubber ensuring the groove of the mask is clean.
•
Ease new visor (2) into groove and ensure it is correctly positioned all around.
•
Refit clamps, push firmly into position and secure clamp screws and nuts (3).
•
Put neck strap on (17).
Speech diaphragm and O-ring seal.
•
Remove inner mask (1) and sieve of the mask connector (12).
•
Loosen the screw (15) of the speech diaphragm (14) with the SPERIAN special tool.
•
Remove the speech diaphragm (14).
•
Change the O-ring seal (13) and lubricate with silicon grease.
•
Position the speech diaphragm (14) in the box and refasten the screw (15).
•
Put the sieve (12) and the inner mask (1) back into the connector (7).
Head harness.
•
Pull front and side straps of head harness (4) free of the reels (18) while pushing the buckle clips forward.
•
Pull the straps of the new head harness (4) through the reels (18) which you find on the buckles.

PARTS LIST

Item Description
1 Inner mask, black EPDM
1 Inner mask, black silicon
2 PMMA Visor (marked CL2)
2 PMMA visor for chlorine and solvants (marked C)
2 PC Visor (marked CL2)
3 Black visor frame with nuts and screws
4 Head harness with infused rectangle
4 Head harness without infused rectangle
5 Exhalation valve flap
6 Valve seat for inner mask
7 Rd40x1/7" connector assy (marked "R") < 01/2005
7 Rd40x1/7" connector assy (marked "R") > 01/2005
8 M3-10 screw for grid of mask connector
9 Inhalation valve seat for mask connector.
10 Inhalation valve flap
11 Black SPERIAN grid connector < 01/2005 (grid fastened with
two screws)
11 Black SPERIAN grid connector > 01/2005 (grid fastened with
one screw)
12 Sieve for mask connector
13 O-ring for speech diaphragm
14 Speech diaphragm Ø 54
15 M56x2 screw for speech diaphragm
16 Connector fixing ring for mask connector
17 Neck strap with elastic buckles
18 Roller rectangle
19 Valve for inner mask
OPTIONS / ACCESSORIES
P/N
1705611
1705610
1705260
1705263
1705261
1705360
1710019
1710021
1705214
1715069
1705381
1705188
1772580
1705207
1702150
1705224
1705189
1705219
1705211
1705205
1705204
1705235
1710144
1710050
1715070
7
P/N Description
1705277 Key for M56x2 screw for holding speech diaphragm
1022300 Spectacle rims for mask
1772500 Rigid mask case
1779065 EPI-US, 5 litre can
1779061 ALTUSIL oilcan (product for cleaning of visors)
1779502 Pliers for mask connector clamps
1792100 Test bench for air-tightness of mask
1792132 Test bench for air-tightness of mask
1792252 Test bench software 1792132