Dräger PSS BG 4 plus User Manual

Description
Dräger PSS BG 4 plus 7
The following information is displayed on the Sentinel in
normal mode (operating mode display):
1 Oxygen pressure, analog
2 Oxygen pressure, digital
3 Remaining period of use up to the beginning of the first re-
sidual pressure warning in minutes
The Sentinel issues the following warnings:
 first residual pressure warning
The warning sounds at 700 psi to 870 psi/50 bar to 60 bar
accordingto the relevant country-specific settings. When
this warning sounds, approx. 75 % of the oxygen has been
used up. The Sentinel issues an intermittent tone for
30 seconds and the red LEDs flash continuously.
 second residual pressure warning
When this warning sounds, approx. 95 % of the oxygen
has been used up. The Sentinel issues an intermittent tone
continuously and the red LEDs flash continuously.
 low pressure warning
When the device is put into operation and the cylinder is
closed, the Sentinel issues an intermittent tone and the
"Open cylinder valve" symbol appears on the display.
The Sentinel can function as an automatic distress signal unit
and issue an alarm when the wearer is no longer moving:
When the wearer starts operation and the function key is
removed from the Sentinel, the motion sensor is activated. The
"Motion sensor activated" symbol is displayed briefly
(see chapter 2.6 on page 9). If no further motion is detected,
a pre-alarm sounds after approx. 25 seconds. If any
movement is detected within the following approx. 10 seconds,
the pre-alarm is cancelled. If no motion is detected, the main
alarm sounds. The main alarm can be acknowledged as
follows:
 The function key is re-inserted.
 Both buttons on the Sentinel are pressed.
The apparatus wearer can trigger an emergency signal using
the yellow panic button if the wearer cannot retreat from the
hazard area.
The left button can be used to switch on the backlight for
5 seconds.
The ambient temperature can be displayed using the right
button.
The Sentinel has an infrared PC interface. Optional Windows
software is available to use the infrared interface for the
following functions:
 Custom configuration of the Sentinel
 Export of all parameters from the Sentinel
2.3 Intended use
The closed-circuit breathing apparatus supplies breathing air
for approx. 4 hours, thus making it unnecessary for the wearer
to breathe polluted ambient air lacking in oxygen. It is used by
the fire services and for appropriate missions in underground
and open-cast mines, as well as in industry.
2.4 Limitations on use
2.4.1 General cautions and limitations
The closed-circuit breathing apparatus must never be used for
diving.
2.4.2 NIOSH cautions and limitations
The cautions and limitations are also listed on the approval
label, please refer to chapter 10 on page 34.
J - Failure to properly use and maintain this product could
result in injury or death.
M - All approved respirators shall be selected, fitted, used,
and maintained in accordance with MSHA, OSHA, and
other applicable regulations.
N - Never substitute, modify, add, or omit parts. Use only
exact replacement parts in the configuration as
specified by the manufacturer.
O - Refer to User´s Instructions, and/or maintenance
manuals for information on use and maintenance of
these respirators.
S - Special or critical user´s instructions and/or specific use
limitations apply. Refer to User´s Instructions before
donning.
35321728.eps
psi
1
3
2
NOTICE
Short-term full submersion of the apparatus under
water (e.g. when crossing a water hole in a mine) does
not result in impairing the correct functioning of the
closed-circuit breathing apparatus.
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Draeger Training 11/16 rev 1

Dräger PSS BG 4 plus Specifications

General

Brand	Dräger
Model	PSS BG 4 plus
Category	Diving Instrument
Language	English