both hands (figure 5). Then pull the front straps. In the ideal position of the
harness, the edge of the mask seal is felt to exert a uniform pressure on the
face.
6.1.5 The best way of donning the mask is to adjust the harness straps pulling them
perpendicularly to the mask itself (figure 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 7a). For
C607 TWIN model only, close both the filter connectors with the palm of the
hands and making sure the mask fits well onto face (figure 7b). 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. The most
effective way to determine the correct tightness of the half mask is to perform the
fit test, both choosing the PPE, both in the donning phase, immediately before
use.
6.1.6 In order to take the mask off, 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 C607 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
Static seal test in negative pressure (3)
and in positive pressure (4) by the user
Tightness test with test equipment
Before release
Prior
for use
each use
X
X
X
23
After
Every 6
Every
use
months
X
X
X
Every 2
Every 6
year
years
years
X (1)
X (1)
X