Masks C607 Twin; Masks C607 Selecta; Operating Principles; Mask Components - DPI Sekur C607 Serie Manuel D'utilisation Et D'entretien

3.1

Masks C607 TWIN

In addition to all the markings listed above, the marking "C607 TWIN" is present on the
inner half mask.
3.2

Masks C607 SELECTA

In addition to all the markings listed above, the marking "C607 SELECTA" is present on
the threaded connector.
4

Operating principles

The air inhaled through the inhalation valve in the connecting piece is fed into the mask
and flows in the inner side of the visor thus preventing misting. The air enters the inner
mask through the check valves and after use by operator, is exhaled through two
exhalation valves. The operation of a positive pressure respiratory protection device
connected to the masks, for the models that contain the letters SP/A, is made possible
by the exhalation valve equipped with positive pressure spring. Thanks to the above
valve, the air pressure inside the mask is always above the surrounding air pressure, thus
allowing a very high safety level.
5

Mask components

The whole manual refers to the figures that are present at the end of the manual itself.
C607 masks are made up by the following components (figure 1):
5.1 Faceblank
5.2 Inner mask with check valves
5.3 Panoramic visor
5.4 Exhalation valve
5.5 Speech module
5.6 Threaded connector
5.7 Filter connector for C607 TWIN model only
5.8 Head harness with 5 straps
5.9 Neckstrap for C607 E, C607 CL3, C607 SP/A, C607 SP/A ESA, C607 SP/A ATEX,
C607 SP/A TP, C607 TP models only
5.10 Hood for C607 MD model only
6

Donning and tightness test

6.1 Modelli C607 E, C607 CL3, C607 SP/A, C607 SELECTA, C607 TWIN, C607 SP/A
ESA, C607 SP/A ATEX, C607 SP/A TP, C607 TP, C607 MD
6.1.1 Use the adjustable buckles to loosen the harness completely (figure 2)
6.1.2 Loosen the two neck straps of the harness (figure 3).
6.1.3 Place the mask in front of the face holding it by the back of the neck harness,
place the chin in the appropriate groove in the mask and put the harness over
the head (figure 4).
6.1.4 Pull the straps back in the sequence "Neck", "Temple" and "Front". The neck and
temple straps of the harness should be pulled back preferably in pairs and using
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