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11 

 

 

5.4  Replacing the inhalation valve discs 

 

Remove the rubber valve seat (green) 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 (green) 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. 

 

5.7  Replacing the inner mask

 

 

Remove first the inhalation valve seat (green) by pushing it with a finger from the inside of the 
mask (Fig. G). 

 

If equipped with drinking device: remove the mouth piece. 

 

Gently pry open the hole on the fastening ring of the inner mask, using a screwdriver (via the 
inh. valve body opening) until the fastening ring comes off (Fig. R). 

 

Remove the inner mask (Fig. S). 

 

When assembling, insert the notch of the fastening ring into the tip of the exh. valve (Fig. T) and 
press the inner mask into place. 

 

5.8  Cleaning 

 

Mask 

 

Remove

 the filter, valves/discs, drinking device, spectacle frame, speech diaphragm and inner 

mask. 

 

Clean

 the facepiece and components with a damp cloth or sponge, using lukewarm water and 

mild detergent (neutral, pH 6-8) (e.g. washing-up liquid). A brush can be used for stubborn dirt 
(be careful not to scratch the visor). 

 

Do not use

 solvents (e.g. alcohol, acetone, turpentine), hot water or bleaching agents 

(perborate, percarbonate). 

 

Drinking device 

(Fig. U, V, X)

 

 

Remove the mouth piece and wash it separately. 

 

Put water in a bottle. Connect the bottle to the drinking device. Squeeze the bottle and let water 
pass through the drinking device. 

 

Replace the mouth piece when the mask is given to another user. 

 

5.9  Disinfection 

After cleaning, disinfect the inside/faceseal with a disinfection solution (e.g. Scott Trigene), rinse and 
allow to dry. Finally, reassemble the mask. 

Summary of Contents for M98 Small

Page 1: ...Construction 2 Spare parts 3 Date of manufacture 3 Donning and Service 4 Symbols 7 Warranty 7 Instructions for Use ENGLISH 8 5009726 D 05 2010 Mask M98...

Page 2: ...2 1 2 3 5b 6b 8 5a 6a 6c 9 4 7a 7b 7c 10 11 12 5c 13 14 15...

Page 3: ...Inner mask fastening ring Steering valves discs Drinking device Drinking device gasket Bottle cap 9 012687 Speech diaphragm PM 10 012794 Speech channel cover PM 11 012516 Exhalation valve cover 95 12...

Page 4: ...4 4 1 4 2 4 3 4 4 4 5 4 6 4 7 5 2 Fig A Fig B Fig C 4 8...

Page 5: ...5 5 3 Fig D Fig E1 E2 Fig F 5 4 Fig G Fig H Fig J Inner mask disc 5 5 Fig K Fig L Fig M...

Page 6: ...6 5 6 Fig N Fig O Fig P Fig Q 5 7 Fig R Fig S Fig T Fig U Fig V Fig X Speech channel cover 5 8...

Page 7: ...e of purchase by the end user These products are warranted to be free from defects in materials and workmanship at the time of delivery Scott will be under no liability for any defect arising from wil...

Page 8: ...2 3 The filtering device may be used only if the oxygen content of the air is 18 23 vol 2 4 Gas filters do not protect against particles Similarly particle filters do not provide protection against g...

Page 9: ...ess of facepiece rubber parts and visor head harness condition and elasticity that speech diaphragm is in place that exhalation valve is in place and that its cover is properly fastened that inh and e...

Page 10: ...n 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...

Page 11: ...seat green by pushing it with a finger from the inside of the mask Fig G If equipped with drinking device remove the mouth piece Gently pry open the hole on the fastening ring of the inner mask using...

Page 12: ...sposed of according to the filtered substances gases or particles 5 11 Australia and New Zealand For complete national requirements please refer to the standard AS NZS1715 2009 Use Maintenance of Resp...

Page 13: ...g the details below UK Office Keison Products P O Box 2124 Chelmsford Essex CM1 3UP England Tel 44 0 330 088 0560 Fax 44 0 1245 808399 Email sales keison co uk Please note Product designs and specific...

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