Bodyguard
®
7000
Electronic monitoring system
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3.7 Product marking and symbols
3.7.1 Serial number
The product serial number is marked on the pressure module and user
interface in the format BRMY-1234 MM/YY, where MM/YY are the month
and year of manufacture. The pressure module has an additional 5-digit
suffix which is the serial number of the internal HUD transmitter unit.
3.7.2 LCD screen symbols
4 Operation
4.1 Preparation for use
NOTICE
The LCD screen has an external sacrificial screen which is a removable
clear screen. The sacrificial screen might be fitted with a thin flexible
protective covering. Remove this thin covering before first use. Do not
remove the sacrificial screen.
1. Carry out a visual inspection (see section 6.2).
2. Assemble and prepare the breathing apparatus for use as described
in the product instructions for use.
– When instructed to carry out functional testing of the breathing
apparatus, carry out the Bodyguard
®
7000 functional testing (see
3. Put on the breathing apparatus as described in the product
instructions for use.
– When the cylinder valve is opened, the self-test and start-up
sequences run and then the system adopts the active mode.
4. DSU automatic distress alarm:
– Tally version: remove the tally to activate the motion sensor.
– Button version: remove the tally if the motion sensor is required.
4.2 During
use
4.2.1 User functions
All electronic devices could suffer a temporary loss of function if
subjected to high levels of RF radiation. The system operates with no
loss of performance or function once the RF radiation has been removed.
– Regularly check the LCD screen to confirm the cylinder pressure and
TTW.
– Cylinder pressure and TTW are indicated digitally on the normal
operating screen (Fig. 3). Approximate cylinder pressure is also
indicated by the radial segments on the screen.
Fig. 3
Normal operating screen
– To call for emergency help or assistance, press the manual alarm
button .
– To illuminate the screen backlight, press and quickly release the left-
hand or right-hand button.
– Pressing the right-hand button also scrolls any stored user ID
information.
4.2.2 Alarms and status messages
WARNING
Users should be in a safe area before the EOST alarm and mechanical
whistle commence.
►
Evacuate to a safe area immediately if warnings commence during an
operation.
– The green LED on the user interface flashes every second to indicate
active mode.
– If the motion sensor pre-alarm activates, and is not required, move
the user interface to cancel the alarm. Do not use the buttons to
switch off the pre-alarm.
– If the motion sensor full alarm activates, cancel the alarm as follows:
– Tally version: fit the tally. With the tally fitted, the system is not in
active mode. It is in a non-operational mode and there is no
display of time to whistle.
– Button version: simultaneously press and hold the left-hand and
right-hand buttons until the alarm stops.
– If a low battery or battery error displays, an alarm tone sounds
every 9 seconds.
– When a low battery is first indicated, it is possible to safely use the
breathing apparatus for up to 2 hours. However, Dräger strongly
recommend replacing the batteries or recharging the power pack
at the first opportunity (see section 6.5).
– If a battery error displays, evacuate to a safe area immediately.
4.2.3 Alarm patterns
Pre-alarm pattern
An increasing-volume 3-tone alarm is emitted from the user interface,
and the LCD screen backlight flashes.
Full alarm pattern
A high-pitched repeating alarm tone is emitted from the user interface,
and the red and blue LEDs on the user interface flash.
– Symbol
displays during automatic distress alarms.
– Symbol displays during manual distress alarms.
EOST alarm pattern
An intermittent high-pitched alarm is emitted from the user interface. The
red and blue LEDs on the user interface flash, and a sector on the left of
the LCD screen flashes red. The mechanical whistle on the breathing
apparatus also commences at approximately the same time.
4.2.4 Telemetry and retreat alert
The symbols used during telemetry (PSS
®
Merlin
®
) and retreat alert
operations are shown in section 3.7.2.
– See section 4.5.5 for a description of retreat alert operation and
symbols.
– See the PSS
®
Merlin
®
instructions for use for a description of
telemetry operation and symbols.
4.3 After
use
WARNING
Removing the breathing apparatus in a hazardous breathing environment
is unsafe.
►
Do not remove the breathing apparatus until in a safe breathing
environment.
1. Remove the breathing apparatus as described in the instructions for
use supplied with the breathing apparatus.
2. Switch off the electronic system (see section 4.4.5).
3. Carry out the after use tasks detailed in the maintenance table (see
4.4 Basic operating functions
4.4.1 Self-test and start-up sequences
The system switches on when the power pack is fitted, when the left-
hand button is pressed, when the tally is removed, or when the
pneumatic system is pressurized. Each time it switches on (with or
without an air cylinder fitted), the self-test and start-up sequences run.
4.4.2 Self-test
During the self-test, alarm tones sound, the LEDs and screen flash, and
the start-up sequence runs.
– If the system passes the self-test, it adopts the active mode (see
– If the system fails the self-test, one of the following faults is indicated.
– The screen displays a cross and a fault code. Note the fault
code and contact Dräger.
– The screen displays a low battery or battery error and
switches off. See troubleshooting (section 5) for remedy actions.
4.4.3 Start-up sequence
The start-up sequence provides information and options for the user each
time the system switches on. The sequence is configurable using the
Dräger PC Link (see section 3.3.1), and only the pre-configured options
and information are shown during start-up.
Default start-up sequence
The start-up sequence shown in this section is the default setting for
Bodyguard
®
7000.
1. The wait symbol and then pass symbol displays as the system
performs the self-test.
2. The cylinder type symbol or displays and the selected cylinder
type is shown. If more than one cylinder type is stored in the system
memory, the user can select the required cylinder from the available
options (see section 4.5.3).
3. Electronic leak test displays to allow the user to check the
breathing apparatus pneumatic system for leaks (see section 6.3.1).
4. Motion sensor activated
or deactivated displays to indicate the
status of the motion sensor of the automatic distress alarm.
Other configurable start-up options
– User ID allows information about the wearer to be uploaded from a
user ID card to the system memory (see section 4.5.2).
– Battery condition indicates the charge state of the power pack
using the radial segments on the user interface screen. Battery
condition is also referred to as the “fuel gauge”.
– Quiet alarm allows the user to select reduced volume alarms for
operating inside a restricted space such as a chemical protective suit
or a repair workshop (see section 4.5.4).
4.4.4 Active mode
Active mode is the main operating mode of the electronic monitoring
system. When the system is in active mode, the electronic monitoring
and warning functions are operational. Active mode is indicated by the
following.
– The normal operating screen (Fig. 3) displays on the user interface.
– The green LED on the user interface flashes every second.
If the tally is still fitted in a tally version, the system is not in active
mode. It is in a non-operational mode: TTW is not displayed on the LCD
screen, but cylinder pressure is displayed.
4.4.5 Switching off the electronic system
The system cannot be switched off unless the cylinder pressure indicated
on the user interface is below a preset value. Close the cylinder valve
and fully vent the pneumatic system before attempting to switch off.
Tally version
– After normal use with the tally removed: refit the tally.
– If the system was activated with the tally fitted (during functional
testing for example): press and hold the left-hand button until the
return symbol momentarily displays, then immediately release the
button.
Button version
– Press and hold the right-hand and left-hand buttons until the display
clears, then immediately release the buttons. If the tally was removed,
refit the tally.
4.5 Additional start-up and operating functions
4.5.1 General
The functions in this section are only available if they are pre-configured
in the system. More information about configurable settings and features
is in section 3.3.1.
4.5.2 User ID (scrolling data)
Information about the wearer (e.g. user name, brigade name, and station
number) can be uploaded from a user ID card to the system memory.
Once information is stored, pressing the right-hand button during use
scrolls the information across the screen. The scroll speed is configurable
using the Dräger PC Link (see section 3.3.1).
Uploading information from a user ID card
1. Hold the user ID card on to the back of the user interface, directly
behind the screen.
2. Press the left-hand button to activate the start-up sequence.
3. When the user ID symbol displays, press the left-hand button
before all of the radial segments extinguish.
– The screen briefly illuminates, and the system uploads data from
the user ID card to the system memory.
– When the data upload is complete, the tick symbol displays.
4. Press and release the right-hand button to check that the uploaded
data is correct.
– The user ID scrolls from right to left across the screen.
5. Repeat the procedure if the information is incomplete or inaccurate.
6. Switch off the electronic system (see section 4.4.5) if necessary.
4.5.3 Cylinder selection
If more than one cylinder type is stored in the system memory, the user
can select the required cylinder type during start-up as follows.
1. Press the left-hand button to activate the start-up sequence.
2. When the cylinder type symbol or displays, press the left-hand
button before the radial segments extinguish.
– The screen displays the next stored cylinder type and the radial
segments extinguish clockwise.
– The cylinder size and pressure alternate on screen (Fig. 4 shows
a 9.0 litre, 300 bar cylinder).
Fig. 4
Cylinder selection screen
3. Before the radial segments extinguish, press the right-hand button to
scroll between the stored cylinder types.
4. When the required cylinder type displays, immediately press the left-
hand button to confirm selection.
– The start-up sequence restarts, and the selected cylinder type is
shown during the sequence.
5. Switch off the electronic system (see section 4.4.5) if necessary.
4.5.4 Quiet alarm
Quiet alarm allows the user to select reduced volume alarms for
operating inside a restricted space such as a chemical protective suit or a
repair workshop. Select quiet alarm as follows.
1. Press the left-hand button to activate the start-up sequence.
2. When the quiet alarm symbol displays, press the right-hand button
before the radial segments extinguish.
– The alarm volume is reduced for the current operation only. The
system automatically resets to full alarm volume when it is
switched off.
General symbols
Low battery
Press right-hand button
Battery or charging error
Wait
Battery charged
Leak test timing
Low cylinder pressure
Leak test pass / vent system
Manual distress alarm
Leak test fail
Automatic distress alarm
User ID
Passed or complete
Cylinder type – Single
Failed or cancelled
Cylinder type – Double
Perform leak test
Reset or return
Open valve
Quiet alarm
Close valve
PC Link mode
Telemetry symbols
Active communication
Fault
Lost communication
Evacuate
Voluntary withdrawal
Retreat alert symbols
TTR
Arrival point
Retreat
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bar
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