Dräger PSS 7000 Reference Guide

Extended Duration Breathing Apparatus (EDBA) Instructor Reference Guide - February 2018, Version 1.0
@
NARU_Education
www.narueducationcentre.org.uk
DRÄGER (PSS) 7000
1.0
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BAI GUIDE
N A R U E D U C AT I O N C E N T R E
15
The Automatic Distress Signal Unit (ADSU)
will sound if no motion detected for
21 – 25 secs. The sound increases in
volume, and backlight flashes. If motion
is sensed within a further 8 secs alarm is
reset, if no motion is sensed, full alarm
is activated and a high-pitched audible
alarm emitted with two blue, and red
LEDs flashing intermittently.
The Distress Signal Unit (DSU) can be
manually activated when a wearer
requires assistance and is operated by
pressing the yellow distress alarm button
on the front of the Bodyguard
®
.
Incorporates electronic high pressure
warning whistle.
Power packs are available as either a
pack containing 5 replaceable 1.5 Volt
AA batteries, or as a single
rechargeable 7.2 Volt Lithium Polymer
battery pack.
Comfort light (green) must be flashing
to show that the ADSU is in operational
mode.
Blue light flashing means telemetry
has been established.
A short high pressure (HP) hose,
routed from the HP sensor housing
of the pressure transmitter unit,
connects to the HP outlet of the
pressure reducer of the SCBA.
Yellow marking band indicates
telemetry enabled.
Dual High Pressure Port - Fitted to this
port is the unique dual function hose
assembly that incorporates the in-line
whistle warning unit, (high pressure
activated - medium pressure operated),
and a high pressure (HP) contents gauge
for the monitoring of the air pressure in
the compressed air cylinder. The hose
construction, although appearing similar
to MP hoses, differs in its internal
construction. Inside the outer EPDM
rubber hose assembly is a fine bore
copper capillary tube that is coil wound
around a multi-strand length of
phosphor bronze wire. The capillary tube
and wire are then brazed to each of the
end fittings of the capillary tube assembly.
High pressure air flows through the bore
of the capillary tube to the pressure gauge
and not through the rubber hose.
Constructed as part of the dual pressure
hose assembly, and located at base of the
pressure gauge, is the in-line whistle
warning unit (WWU). The WWU provides an
audible alarm signal that begins sounding
when the available air remaining in the
compressed air cylinder has reduced to a
pre-set pressure. The released air enters
the bore of the rubber hose (via the dual
pressure port) and activates the in-line
whistle warning unit. The pre-set pressure
setting of the WWU may be adjusted by the
user to meet special requirements.

Dräger PSS 7000 Specifications

General

Type	Self-Contained Breathing Apparatus (SCBA)
Application	Firefighting, industrial
Cylinder Pressure	300 bar
Approvals	EN 137
Air Capacity	6.8 L
Working Pressure	300 bar
Standards	EN 137