INTERSPIRO DIVATOR MKII Manuel utilisateur

Divator MKII Face mask

Instruction manual

Contents

Special points 5

Technical description 6

Face mask 6

Low volume diving visor 6

Breathing valve 7

Breathing valve with positive pressure 7

Usage 8

Preparation 8

Donning 9

Removing the mask 11

Cleaning 12

Daily care: 12

Assembly after cleaning 16

Function test after cleaning 17

Inspection 17

Diving in low water and/or air temperatures 18

1. Breathing valve 18

2. Face mask 19

Repeated dives at air temperatures below +5°C 19

Surface supply (Hose diving) 19

Storage 19

Special points

The full-face masks are intended only for the use stated in this user

manual. Exceptions can be agreed only in writing.

Servicing, cleaning, maintenance and repairs require precise knowl-

edge and observance of the instructions for use in this manual.

Maintenance and repairs must only be carried out using Original

INTERSPIRO parts. Servicing, maintenance and repairs may only

be carried out by specialist personnel. Inspections must be carried

out at regular intervals by specialists and records of these kept. Care

must also be taken that the replacement intervals for the exhalation-

valve disc and the speech cone are adhered to.

INTERSPIRO offers maintenance contracts which via annual check-

ing, maintenance and, if necessary, repair of your breathing appara-

tus and masks guarantees that they are always in working order.

INTERSPIRO is not responsible for maintenance and repairs car-

ried out by third parties. Nor is it responsible for improper handling

or use. The guarantees and warranties by INTERSPIRO specified in

the conditions of sale are not extended by these “special points”.

If it is required to trim the mask to a neutral buoyancy,

weights are available which can be attached to locating lugs

(art. no. 336 190 854) on each side of the visor. See figure.

In addition the visor is closer to the wearer's eyes which

gives the user an increased angle of vision. The low volume

diving visor is suitable for use with any DIVATOR MK II

masks and is available as a retro-fit kit or complete assem-

bly.

LOW VOLUME DIVING VISOR

DIVATOR MK II is fitted with a low volume diving visor. The visor is designed

to minimise the volume of air inside the face mask and so reduce the positive

buoyancy effect. The sides of the visor are mat finished to avoid optical distor-

tions.

Technical description

FACE MASK

The DIVATOR MKII face mask has been tested in accordance with EN 250.EC

Type-examination (Directive93/68/EEC)by SGS Yarsley ICS Ltd,East Grinstead,

West Sussex, RH19 1 ET, UK (Notified body No 0120).

The mask with inner mask is made of rubber and provided with a flat visor. The

mask has holed studs for fitting spectacles. In the connection piece for the breath-

ing valve there is space for a microphone to a diving telephone. (When fitting a

microphone a cover with long screws should be used.)

The rubber head harness has five straps that are tightened and locked by stain-

less steel buckles. The wide and soft sealing edge of the mask is pressed lightly

against the face by the positive pressure and follows the contours of the face

giving an effective seal.

Inhalation and exhalation air will never be mixed because of the separate inha-

lation and exhalation channels. In this way rebreathing of carbon dioxide en-

riched exhaled air is eliminated.

During inhalation air flows from the breathing valve up through the demister

ports over the inside of the visor preventing any condensation from forming, and

on through the non-return valves into the inner mask.

During exhalation the air is expelled to the ambient water through the exhala-

tion valve.

BREATHING VALVE

The breathing valve is of the demand type i.e. air is only supplied during inhala-

tion.

Owing to the balanced valve function the breathing resistance can be kept ex-

tremely low, in spite of variations in the secondary pressure which may occur

e.g. in connection with surface supply diving.

In the inhalation channel there is a one way valve to prevent water from pen-

etrating into the valve mechanism where it could freeze and cause the valve cone

to stick in the open position.

Note! The breathing air shall meet the requirements for breathable

air according to EN 132, Annex A.

Note! It is very important that the breathable air is clean and dry.

Note! Do not use oxygen or oxygen enriched air.

Breathing valve with positive pressure (for use in contaminated water)

The valve is designed to give a slight positive pressure of approximately 200 Pa

(20 mm water column) in the mask. The positive pressure (safety pressure) is

turned on automatically when the user takes his first breath in the mask. This

ensures that there is no way of forgetting to turn on the positive pressure or that

it could become accidentally turned off.

The positive pressure reduces the risk of water inleakage (which is very impor-

tant when diving in contaminated water) and the positive pressure in the mask is

maintained irrespective of the diver's momentary air consumption. But if water

should still have penetrated, the mask is easily drained by pushing the purge

button of the breathing valve.

When the mask is taken off the black lever on the breathing valve should be

turned in against the valve housing. The breathing valve will then be shut off.

Usage

PREPARATION

1. Connect the breathing valve to the

mask by pushing the valve into the

connection piece and by turning it

anti clock-wise so that it grips in

the bayonet coupling.

3. Connect the breathing hose to the

breathing valve and tighten the

union nut by hand.

2. Lock the breathing valve in posi-

tion with the cover which should

be pressed on and the screws tight-

ened by hand. If needed the O-ring

should be lubricated with a thin

layer of lubricant 331 900 269.

DONNING

1. Adjust the pressure equalizer pad

to a position which permits easy

breathing through the nose.

2. Pull out the head harness straps as

far as possible and put on the face

mask

3. Tighten the head harness straps

moderately.

Note! Always pull down the head harness as far as possible at the

back of your head and tighten the lower straps first to counteract the

buoyancy of the mask.

4. If necessary, pressure equalize by

pressing the breathing valve up-

wards.

4. Check the positive pressure by

holding the breath and inserting

two fingers between the sealing

edge and the face; a strong air flow

should be heard.

4. Inhale deeply to turn on the posi-

tive pressure automatically (alter-

natively press lightly on the purge

button, see figure). Stop breathing

and listen for any leakage. If there

is a fitting leakage check that hair

has not come between the mask and

the face and adjust if necessary the

head harness.

REMOVING THE MASK

1. Unlock the buckles and loosen the

head harness.

2. Turn off the positive pressure by

pressing the black lever on the

breathing valve towards the valve

housing. See figure.

3. Remove the mask.

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