55
freedom of movement of the head. In the case of a demand valve with plug in
connection to the mask, bring it close to the inhalation connector driving with the
fingers of the left hand and insert the demand valve into the connector of the
mask. Then press very gently until you hear a double click. Rotate the demand
valve with respect to the connector of the mask and pull it out in order to verify
the correct insertion.
On the first of inhalation, winning a slight initial depression that will not be
repeated in following breaths, the demand valve will automatically commute from
stand-‐by to positive pressure mode by allowing the wearing with no waste of air.
Run a few breaths of varying intensity to thoroughly check the regular and smooth
operation of the unit.
11
Use
After scrupulously having carried out the preliminary operations described so far,
you can start the intervention with prescription to interrupt it, and move away
from the contaminated area, in the following cases:
•
if the warning device starts to whistle,
•
if you notice any abnormality in the functioning of the apparatus,
•
if you feel excessive panting or feeling unwell.
Below is a table showing the average air consumption in various situations for an
individual of medium body size. Recall that these values will be much more
confirmed or reduced, even significantly, as the operator will be trained and,
therefore, capable of self-‐control of his emotional state in the course of the
intervention.
Intensity of the physical activity
Air consumption (l/min)
Rest
10
Light work
10/20
Medium work
20/40
Heavy work
40/60
During the operation check frequently the pressure gauge to assess the remaining
air autonomy.
For models DIABLO INDUSTRIAL “Ex”, DIABLO ADVANCED “Ex” and DIABLO
INDUSTRIAL PIZ “Ex” it is required that users of the SCBA, at any stage of the
operation, wear antistatic clothing and footwear and use non-‐sparking tools.
12
Doffing the device
Do not stop using the SCBA, and consequently the breathing of the air contained
in it, until you are sure you have definitely reached an area with breathable air.
Once you reach a safe area loosen the straps of the harness of the mask and
remove it by passing it over your head. Switch the demand valve in stand-‐by
mode, by pressing the red button at the bottom, without removing it from the
mask to prevent contaminants from entering inside. Open the belt buckle of your
belt, the chest buckle and loosen the shoulder buckles. Doff the unit and lay it
gently on the ground without dropping it. Close the cylinder valve and
EN
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