SEKUR SFERA Serie Manual De Uso Y Mantenimento página 17

5.4 Exhalation valve
5.5 Speech module
5.6 Threaded connector with protection grid
5.7 Head harness with 5 straps
5.8 Neckstrap
5.9 In the Sfera SP/A ASB: backup filter connector.
5.10 Disassembling and reassembling tool of components (available on request).
6. Donning and tightness test
6.1 Use the adjustable buckles to loosen the harness completely (figure 2).
6.2 Loosen the two neck straps of the harness (figure 3).
6.3 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).
6.4 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 both hands (figure 5). In the ideal position
of the harness, the contour of the mask seal is felt to exert a uniform pressure on the face.
6.5 The best way of donning the mask is to adjust the harness straps pulling them perpendicularly to the
mask itself (figure 6).
6.6 After donning the mask and before use, carry out a tightness test by closing the input threaded
connector with the palm of the hand and making sure the mask fits well onto face (figure 7). No air
must be felt passing into the mask while inhaling. This tightness test must be carried out 2-3 times. The
mask can be used only after passing the tightness test. For the SP/A ASB version it is necessary to be
sure that the cover of the filter is correctly inserted before test the fit.
6.7 In order to doff the mask, loosen the straps in the same sequence followed in the donning procedure
(see 6.4). Push the buckles forward with your thumbs (figure 8). Slip off the mask from the chin and
then lift it from the head.
7. Maintenance, cleaning and disinfection
To keep SFERA masks in full working order, it is necessary that maintenance, cleaning and disinfection
procedures are periodically carried out. According to the table here below.
7.1. Inspection and periodic maintenance
The user must ensure that the respiratory protective device is periodically checked as indicated in the user's
manual supplied by the manufacturer.
Operation to be carried out
Cleaning and disinfection
Visual inspection:
• Presence of scratches or cracks on
the visor
• Visible signs of overheating (2)
• Cuts or cracks on the rubber
• Presence and integrity of the
check valves
• Presence and integrity of the
gasket on the threaded connector
• Presence and integrity of the
inhalation and exhalation valves
• Hand pull the head harness and
check integrity
Before Prior After
Release each
for use use
X
17
Every 6 Every year Every 2
use months
X X (1)
X X
Every 6
years years