Zelinsky Group Unix 5000, Инструкция по эксплуатации

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6.1.3 In case of defects found the Mask shall be replaced by a new
one, and the new Mask shall be checked as stated in clause 6.1.2.
6.2 Putting On the Mask
6.2.1 The Mask shall be put on as follows:
– couple the filters to the Mask; to do that, align three grooves
on the filter base respectively with three tongues in the seat of the
inhalation valve with the bayonet on the lateral surfaces of the Mask
visor (it is necessary to align the tongues on the bearing flange of the
seat and the respective elements of filter base) and turn clockwise until
tight (Figure 2, а, b, c);
а б в
1 – the tongue on the bearing flange of the seat;
2 – the tongue on the filter base.
Figure 2 – Coupling the filter to the Mask
– slack the head harness straps up to restraints;
– tie the ends of the head band;
– put the Mask head band on the neck;
– remove the hair from the forehead and temples to prevent from
their getting under the Mask obturator;
– put on the Mask; to do that, take the Mask with two hands by
the cheek straps of the head harness, stretch the straps sideways, fix
the chin in the lower pocket of the sealer obturator and put the head
harness on the head with a movement of the hands upwards and
backwards;
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2