This table lists air pressure ranges needed to provide the ASTRO with the
volume of air that falls within the required range of 170-250 ltr/min according
to the EN 271 approval.
Make sure you understand the table below, before using the helmet.
1.
Air Source
2.
Breathing Tube
Assembly
3.
Air Supply
Hose
4.
Supply
Hose
Length
5.
Max
Number of
Sections
6.
Pressure
Range
(bar)
Portable or
Stationary
Compressor
Flow
Control Valve
2527000
10
20
30
40
50
60
1
1
2
2
3
3
1,30
1,45
1,50
1,65
1,75
1,90
Set the air pressure at the point of attachment to the pressure setting
specified in column 6 for your breathing tube assembly, hose length and
amount of hose sections. Make sure the air is flowing through your helmet
and the flow control valve is in the MIN (closed) position as in Fig. 3.2 Page
21 when setting the pressure.
BREATHING AIR PRESSURE TABLE
LOW FLOW INDICATOR
ATTENZIONE !
DO NOT SET THE AIR PRESSURE WITH THE FLOW CONTROL VALVE
IN THE MAX. POSITION (OPEN), AS THIS INCREASES NOISE LEVELS.
ALWAYS WEAR EARPLUGS WHEN WEARING THIS HELMET.
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