Dräger PSS Merlin System User manual

Dräger PSS®Merlin®
Telemetry at your service
Instructions for Use
i

Contents
Dräger PSS®Merlin®3
Contents
1 For Your Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.1 Definitions of Alert Icons . . . . . . . . . . . . . . . . . . . . . .4
1.2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.3 Battery Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.4 Disposal of Electrical and Electronic Equipment . . . .5
1.5 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3 Description and Intended Use . . . . . . . . . . . . . . . .8
3.1 Electronic monitoring system . . . . . . . . . . . . . . . . . .8
3.2 The Entry Control Board . . . . . . . . . . . . . . . . . . . . . .8
3.3 Receiving Information . . . . . . . . . . . . . . . . . . . . . . . .8
3.4 Transmitting Information . . . . . . . . . . . . . . . . . . . . . .9
3.5 Manually Recorded Information . . . . . . . . . . . . . . . .9
4 Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.1 The Entry Control Board Power Supply . . . . . . . . .10
4.2 Charging the Batteries . . . . . . . . . . . . . . . . . . . . . .11
4.3 Charging Procedure – Single Battery . . . . . . . . . . .12
4.4 Charging Procedure – ECB . . . . . . . . . . . . . . . . . .12
4.5 Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.6 Charge condition indicator . . . . . . . . . . . . . . . . . . .12
5 In Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
5.1 Pre-entry Procedure . . . . . . . . . . . . . . . . . . . . . . . .13
5.2 Making Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
5.3 Monitoring Data . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
5.4 Communication from ECB to Electronic Monitoring
System 17
5.5 Communication from Electronic Monitoring System to
ECB 18
5.6 After Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
6 Service Information . . . . . . . . . . . . . . . . . . . . . . . .22
6.1 Setting Time Display . . . . . . . . . . . . . . . . . . . . . . . .22
6.2 Setting Date Display . . . . . . . . . . . . . . . . . . . . . . . .22
6.3 Display Test – ECB . . . . . . . . . . . . . . . . . . . . . . . . .22
6.4 Encoding a Tally . . . . . . . . . . . . . . . . . . . . . . . . . . .23
6.5 Removing/Fitting Battery Packs . . . . . . . . . . . . . . .24
6.6 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
7 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . .25
7.1 Entry Control Board . . . . . . . . . . . . . . . . . . . . . . . .25
7.2 Radio Module (Bodyguard®II only) . . . . . . . . . . . .25
7.3 Merlin®Modem (Bodyguard®7000 only) . . . . . . . .26
7.4 Battery pack charging . . . . . . . . . . . . . . . . . . . . . . .26
7.5 Entry Control Board and Electronic Monitoring System
26
7.6 Connect ECU . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
8 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
8.1 Operating Temperature . . . . . . . . . . . . . . . . . . . . . .28
8.2 Storage Temperature . . . . . . . . . . . . . . . . . . . . . . .28
8.3 Telemetry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Appendix A –Bodyguard®II Portable Radio Unit. . . . . . . . 29
A.1 Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
A.2 Charging the Battery . . . . . . . . . . . . . . . . . . . . . . . .30
A.3 Charging Procedure. . . . . . . . . . . . . . . . . . . . . . . . .30
A.4 In Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
A.5 Service Information . . . . . . . . . . . . . . . . . . . . . . . . .31
Appendix B –Bodyguard®7000 PSS®Merlin®Modem. . . 32
B.1 Tally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
B.2 In Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
B.3 Battery pack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Appendix C –Appendix C – PSS®AirBoss Connect . . . . . 38
C.1 Tally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
C.2 In Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Appendix D –Manual Operation of ECB . . . . . . . . . . . . . . . 39
D.1 In Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
D.2 After Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Appendix E – Propagation . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
E.1 Propagation Factors. . . . . . . . . . . . . . . . . . . . . . . . 41
E.2 Enhancing Transmission . . . . . . . . . . . . . . . . . . . . 43
E.3 Customer Evaluation Trials . . . . . . . . . . . . . . . . . . 45
Appendix F – Additional Entry Control Board Functions . 46
F.1 Retreat Alert. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
F.2 Personal Tally . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
F.3 Serial Number Tally . . . . . . . . . . . . . . . . . . . . . . . . 50
F.4 Tally Write Protection (Pass Code) . . . . . . . . . . . . 50
F.5 Team Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . 51
F.6 Incident Reports. . . . . . . . . . . . . . . . . . . . . . . . . . . 51
F.7 BS 8608 Operation. . . . . . . . . . . . . . . . . . . . . . . . . 52

4Dräger PSS®Merlin®
For Your Safety
1 For Your Safety
This instruction for use for the Dräger PSS®Merlin®Telemetry System must be used with the instructions for use supplied with
the breathing apparatus (BA).
1.1 Definitions of Alert Icons
The following alert icons are used in this document to provide and highlight areas of the associated text that require greater
awareness by the user.Adefinition of the meaning of each icon is as follows:
1.2 General
Use of the equipment requires training and observance of this Instruction for Use together with Instructions for Use supplied
with the associated equipment.
Use the equipment only for the purpose as specified in this Instruction for Use or as confirmed in writing by Dräger.
Only trained competent personnel should inspect and service the equipment at regular intervals and a record kept of such
inspections and service.
Dräger recommends a service contract be obtained from your Dräger branch or Agent.
Contact Dräger for details of Service Contracts and Training Courses.
Notify Dräger if there is a component fault or failure.
Use only original Dräger spare parts for servicing and maintenance, or the proper functioning of the equipment may be
impaired.
Use only Dräger Test Equipment for service and maintenance.
1.3 Battery Safety
The battery safety information applies to all battery packs fitted to the Entry Control Board, and the electronic devices fitted to the
breathing apparatus. Further battery safety information is detailed in the instructions for the battery pack type.
NOTICE
This icon indicates additional information on how to avoid inconveniences when carrying out the instructions described.
CAUTION
This icon indicates a potentially hazardous situation which, if not avoided, could result in physical injury to the user, or
damage to the product. It may also highlight an alert against unsafe practices.
WARNING
This icon indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury to the user.
WARNING
All electronic devices may suffer from a temporary loss of function during high levels of radiation. Following a temporary loss of
function, theEntry ControlBoard(ECB) microprocessorwill reset and record the event as an ‘ECB Reset’ in the datalog. Any
displayed alarm LEDs will be cleared. All previously logged-on electronic monitoring systems will automatically re-logon
and the ECB will resume operation with no loss of function or performance. It should be noted that up to 15 minutes of
datalog events could be deleted.
WARNING
Danger of explosion or fire. Do not remove or install the batteries in an explosive or flammable atmosphere.
Explosion, fire or chemical hazard. Do not expose the batteries to heat sources, do not attempt to recharge any non-
rechargeable battery and do not short out the battery terminals.
Risk of explosion if battery is replaced by an incorrect type. Use only the recommended battery type.
CAUTION
Environmental damage. Dispose of used batteries in accordance with national or local regulations.
i
i
!
!
!
!
!

For Your Safety
Dräger PSS®Merlin®5
1.4 Disposal of Electrical and Electronic Equipment
Electrical and electronic equipment must not be disposed of as household waste. This is indicated by the adjacent
symbol.
The product can be returned to Dräger free of charge. For information please contact the national marketing
organizations or Dräger.
1.5 Trademarks
The following website lists the countries in which the Dräger trademarks are registered: www.draeger.com/trademarks.
The Bluetooth®word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by
Dräger is under license.
The trademarks listed are only registered in certain countries and not necessarily in the country in which this document is
published.
Trademark Trademark owner
Bluetooth Bluetooth SIG, Inc.
Bodyguard Dräger
Merlin Dräger
PSS Dräger

6Dräger PSS®Merlin®
Introduction
2 Introduction
When the decision is taken to use self-contained respiratory protection apparatus (BA) in a life threatening hazardous environment,
it is essential that an effective control procedure is in place to manage, monitor and safeguard the wearer of the equipment.
In the United Kingdom, the Operational Guidance – Breathing Apparatus / Command and Control Procedures (OGBA), together
with the Manual of Firemanship, provide guidance for fire authorities and firefighters in the introduction, application and
management of a risk based approach to the wearing of breathing apparatus.
The Dräger PSS®Merlin®Telemetry System package further enhances and supports these control procedures by providing a
means of remote two-way digital data and alert status communication between the wearer of the self contained respiratory
protection apparatus and an external support control module. To achieve communication the Dräger PSS®Merlin®Telemetry
System modules interface with the electronic system of the breathing apparatus.
It is important to be aware that communication can be affected by a breakdown in the transmission signal due to extremes of
application such as long distance, building construction, below ground structures, etc. Dräger offer repeaters and feeder wires
that enhance the signal effectiveness in harsh environments. Appendix E – on Page 41 provides a basic explanation of signal
propagation and outlines some guidelines to maximise the effectiveness of the system. Contact Dräger for further details.
1 Tally channel slot
2 Audible alert sounder
3 Clear label (marker or slide in label)
4 Remarks panel
5 Label – Board Identification Number
6 Label – Equipment Owner Identification Number (Brigade ID)
7 Clear label (marker or slide-in label)
1541
1
2
Entry Control Board ‒Front
3
4
567

Introduction
Dräger PSS®Merlin®7
1436
Entry Control Board ‒Elements
LCD Time Clock Display Screen
Evacuation Button – All – Red
LED Display – Distress Signal from non logged on device – Red
LCD – Status Display Screen
Information Button
Default – Time of Whistle (TOW) or Time to Whistle (TTW) – Green
LED Display – Low Battery – Amber
LED Display – Battery 1 Fail – Red
LED Display – Battery 2 Fail – Red
Keypad
Backspace Key
Enter Key
LCD – Channel Screen
Single Evacuation/Acknowledgement Button – Red
LED Display – On-line Radio Icon – Green
LED Display – Withdrawal Alert – Amber
LED Display – DSU (Manual) Alarm – Red
LED Display – ADSU (Motion) Alarm – Red
LED Display – Charging – Green
1437
1438
1439
1440

8Dräger PSS®Merlin®
Description and Intended Use
3 Description and Intended Use
3.1 Electronic monitoring system
An electronic monitoring system comprises a monitoring device paired with, or incorporating, a communication device. The
monitoring device provides visual and audible information about the status of a breathing apparatus. The communication device
transmits information from the monitoring device to compatible telemetry systems and other compatible devices, such as head-
up displays.
The following electronic monitoring systems are compatible with the PSS® Merlin® Entry Control Board.
Bodyguard®II plus Portable Radio Unit.
Bodyguard®7000 with PSS®Merlin®Modem.
Connect ECU.
Refer to the following for a full description:
Bodyguard®II – refer to Appendix A – on Page 29.
Bodyguard®7000 – refer to Appendix B – on Page 32.
Connect ECU - refer to PSS AirBoss Connect instructions for use.
3.2 The Entry Control Board
The Dräger PSS®Merlin®Entry Control Board (ECB) is a battery-powered unit incorporating an integral digital radio transmitter
and receiver with associated antenna. The ECB has twelve channel slots each able to accept the encoded tally of an individual
electronic monitoring system. Inserting the tally activates the transmission link monitoring capability between the ECB, and the
electronic monitoring system. The last two channels (11 and 12) are colour-coded blue and are normally allocated as standby
channels for use by an emergency team.
Entry Control Boards are individually programmed with an equipment owner identification number (Brigade ID) and a board
identification number.
The data transmission link (logon) between the Entry Control Board and each breathing apparatus electronic monitoring system
is activated following the insertion of a tally (an electronic key with an embedded encoded transponder) into any of the available
channels of the board. The tally is encoded with the same codes as the corresponding electronic monitoring system.
The ECB identifies the associated electronic monitoring system and an on-line radio icon illuminates (green) continuously,
confirming a successful radio communication link. An individual channel screen defaults to show the actual Time of Whistle
information.
At an incident, the use of the Entry Control Board (ECB) is normally the responsibility of an Entry Control Officer (ECO).The ECO
must ensure that agreed control procedures are in place to manage, monitor and safeguard the wearer of the breathing
apparatus.
To support any possible requirement for incident analysis information, the ECB stores and maintains an event log (datalog) that
can be downloaded to a computer. Contact Dräger for full details of associated software.
For positive and secure support of the ECB at and during an incident a support bracket is available for fitment to a tripod unit.
Contact Dräger for details.
3.3 Receiving Information
The on-line radio icon illuminates (green) at each channel of the ECB indicating satisfactory radio contact with the associated
electronic monitoring system.
The Time of Whistle (TOW) default shown on the individual channel screens is calculated automatically by the ECB by adding
the Time to Whistle (TTW) value transmitted of the electronic monitoring system, to the actual time shown on the real time clock
of the ECB.
The following additional ongoing data is communicated to the ECB every 20 seconds from each logged-on electronic monitoring
system:
Time to Whistle.
Cylinder pressure.

Description and Intended Use
Dräger PSS®Merlin®9
Temperature of the monitoring system (Bodyguard®II and Connect ECU only).
By pressing the information button of the ECB, a controller is able to scroll between Time of Whistle, Time to Whistle, Pressure,
and Temperature. The Time to Whistle information is the default data displayed on the electronic monitoring system.Additionally,
the time elapsed from activating the electronic monitoring system to ‘operational mode’ can be displayed.
The above information is displayed on the individual channel screens of the ECB and the defaults and data sequence can be
configured to meet the requirement of the end user. Contact Dräger for details.
Additional alert status signals received from the electronic monitoring system are:
Automatic Distress Signal Unit (ADSU) alarm signal (motion sensor).
Distress Signal Unit (DSU) manual alarm signal (panic button).
Voluntary withdrawal.
Each of these signals is differentiated and identified on the ECB by separate illuminated icons.
3.4 Transmitting Information
The ECO is able to activate the following transmissions from the Entry Control Board to each logged on electronic monitoring
system combination:
Acknowledgement of a voluntary withdrawal transmission from a electronic monitoring system.
Selective evacuation signal – evacuation command to a single electronic monitoring system.
Evacuate-all signal – simultaneous evacuation command to all logged-on electronic monitoring systems.
3.5 Manually Recorded Information
Adjacent to each of the channel screens is a rectangular panel area (remarks panel). Using a waterproof marker (e.g. chinagraph
pencil), record any relevant data regarding individuals or teams, including location of the wearer, location of the team, team
reference, etc. If required the board can be photographed to provide evidence from an incident.

10 Dräger PSS®Merlin®
Getting Started
4 Getting Started
4.1 The Entry Control Board Power Supply
The battery compartment at the rear of the Entry Control Board provides space for two 7.2 V rechargeable nickel hydride (NiMH)
batteries each running in parallel and providing 3.8 Ah of power. Continuous operating time is a minimum of 8 hours between
recharge.
If necessary the Entry Control Board can be operated with the charging connector in place and connected to an independent
power source.
1 Battery cover
2 Charging connector
3 External antenna connector
4 Data connector
Entry Control Board – Back
1
3
2
4
1543

Getting Started
Dräger PSS®Merlin®11
1 Battery 1
2 Battery 2
3 Gasket
4 Foam insert
4.2 Charging the Batteries
The Entry Control Board is supplied without the batteries charged or fitted. The batteries must be charged before initial use. A
screw-lock connection plug is provided in the recess in the rear panel of the board to charge the batteries when they are
assembled in the board. The batteries can also be charged individually.
Refer to the label attached to the Universal Power Supply (AC) to check that the electrical main supply voltage corresponds to
the specified voltage requirement indicated on the label.
NOTICE
The temperature of the battery is measured by an internal thermistor. To protect the battery, the charging process will stop
if the temperature is below 0 °C or above +45 °C.
Batteries can remain connected to the charger without damage when the charging procedure is complete.
WARNING
Charging units are not approved to the same intrinsic safety standard as is applied to the wearer electronic monitoring
system. Do not attempt to charge batteries underground or in an area designated as, or subject to, an explosion hazard.
Battery Compartment
1
2
3
4
1492
i
i
!

12 Dräger PSS®Merlin®
Getting Started
4.3 Charging Procedure – Single Battery
Connect the plug adaptor of the charging lead to the battery. The green charge LED on the front panel of the battery will
illuminate.
When the LED begins flashing , this indicates:
The battery is fully charged (approximately 14 hours for a fully depleted battery), or
Main charging has been suspended due to the battery temperature (see notice above).
After charging, press and hold the release tab of the connection plug adaptor of the charging lead and remove the plug from
the battery connector. See the Service Information (Section 6.5 on Page 24) for instructions on fitting and removing the
battery.
4.4 Charging Procedure – ECB
Unscrew the protective cap from the charging connection
then connect the screw adaptor of the charging lead.
During charging, the green charging LED on the front
panel illuminates continuously and the status display
changes to indicate the level of charge as shown by a
series of dash/dot elements.
Battery fail LEDs ( or ) will illuminate to identify failure
of a battery or a cable/connection fault. Investigate and
repair as necessary.
A flashing charging LED indicates a full
charge, and the number of dash/dot elements provide an
indication of the level of charge (eight dash/dot elements
indicate 100% charge). Disconnect the screw adaptor of
the charging lead and refit the protective cap.ndividually.
4.5 Sleep mode
When the Entry Control Board is not in use, i.e. sleep mode,
the clock display and the status display at the top of the board
will show the time and date. Both can be reset and a number
of other service functions can be carried out in sleep mode
(refer to Service Information).
It is also possible in sleep mode to display the charge condition
indicator for the batteries. See the following instruction.
4.6 Charge condition indicator
With the ECB in sleep mode, press and hold the
information button . The status display changes to show
the level of charge using dash/dot elements.
Eight elements indicate 100% charge.
Four elements indicate 50% charge.
When the information button is released, the status display reverts to show the date information.
NOTICE
If six or less dash/dot elements are shown at the end of the charge, one or both batteries are in suspect condition. Replace
both batteries.
If necessary the ECB can be operated (telemetry mode) with the charging system connected.
1484
i
i
1441

In Use
Dräger PSS®Merlin®13
5InUse
An Entry Control Officer (ECO) is a competent person nominated to control and monitor an Entry Control Board (ECB) and to
direct and instruct all wearers of breathing apparatus (BA) at an incident.
A safe and secure entry control point (ECP) for the ECB should be established from which the ECO is able to effectively control
the adopted procedures. At this point the ECB can be mounted to a tripod to provide positive support and ease of use at an
incident.
The operational control procedures adopted should be in line with the requirements defined by the user or by national legislation
in the country of use. In the case of professional users, e.g. Fire Brigades, these guidelines are in addition to their own guidelines
for command and control procedures.
The following instructions cover the basic operational procedures and the in-use functional features of the Dräger PSS®Merlin®
Telemetry System.
5.1 Pre-entry Procedure
Put on the breathing apparatus and carry out all functional checks as described in the Instructions for Use for the apparatus.
Activate the electronic monitoring system to operational mode. The red LED on IR Link Unit flashes (Bodyguard®II only).
5.2 Making Contact
5.2.1 Making Contact – Automatic
With the electronic monitoring system activated in operational mode, the wearer of the breathing apparatus passes the
encoded tally to the ECO with the following information written on the tally using a suitable waterproof marker:
The name of the wearer.
The cylinder contents pressure – shown on the electronic monitoring system.
If necessary, the ECO can check that the identification number on the label of the tally corresponds with the number on the
label of the electronic monitoring system. The ECO then writes the following information on the tally using a suitable
waterproof marker:
The actual time-in to the risk area (using the ECB clock).
Where a possibility of a radiation risk may be present, a prior-to-entry dosimeter reading.
The ECO fully inserts the tally into an available channel slot. The following rapid automatic activation and transmission
sequence starts:
1. The ECB immediately wakes up.Adouble sharp beep sounds (only as the first tally is installed).
2. A sensor in the selected channel reads and verifies the identification number in the transponder of the tally.
3. The radio in the ECB transmits a signal to the electronic monitoring system requesting to logon the unit to the ECB.
4. The radio of the electronic monitoring system transmits an acknowledgement signal to the ECB.
5. The ECB receives the logon acknowledgement – the data exchange starts.
6. The TTW value transmitted from the electronic monitoring system is added to the actual time shown on the real time clock to
determine the Time of Whistle (TOW).
7. The ECB starts the time elapsed count (minutes).
NOTICE
When the electronic monitoring system is activated to operational mode, it enters a standby mode, waiting for a signal
from the Entry Control Board (logon request).
NOTICE
If the ECB default setting is Time to Whistle (TTW), the ECO should observe the TTW reading on the electronic monitoring
system and add this time to the time-in, to establish an estimated Time of Whistle (TOW). Record the estimated TOW on the
remarks panel of the relevant channel.
i
i
i
i

14 Dräger PSS®Merlin®
In Use
During the logon sequence the following visual changes take place on the ECB and the
electronic monitoring system:
1. The channel screen momentarily displays the electronic monitoring system identification
number, followed by the time elapsed count (E :00), then changes to the default Time of
Whistle (TOW).
2. The Time to Whistle (TTW) value is shown on the display of the electronic monitoring
system.
3. The on-line radio icon illuminates green continuously, confirming a successful radio link
with the electronic monitoring system.
4. The status display changes from the date to show a series
of dash/dot elements that indicate the charge condition of
the ECB batteries (eight elements indicate 100% charge).
5. The electronic monitoring system indicates an active
communication link. Details are shown in Radio Contact:
Section A.4.1 on Page 31 (Bodyguard®II), Section B.2.1
on Page 33 (Bodyguard®7000) or the instructions for use
(Connect ECU).
The logon procedure can be repeated for up to a further
eleven electronic monitoring system using the remaining
channel slots.
Once fully logged on, the wearer is released for entry to the
risk area.
NOTICE
Ifthechannel screen momentarily showsa fault code (Et) then changes to E :00 display,
the logon has been unsuccessful and initially indicates a defective transponder in the
tally. Refer to Making Contact – Manual (Section 5.2.2 on Page 15).
1502
1450
i
i
1449
1452

In Use
Dräger PSS®Merlin®15
5.2.2 Making Contact ‒Manual
An unsuccessful logon identified by an initial momentary display of the fault code (Et) followed
by the display changing to E :00 (time elapsed count), indicates a probable defective
transponder in the tally (a faulty tally must be reported and replaced as soon as possible). A
single audible beep alarm is emitted until the manual logon is started. Manually logon the
electronic monitoring system to the ECB as follows:
To acknowledge the Et fault code, press the channel evacuation button . The red LED
above the button icon will begin flashing. The status display will change from the date to
show ‘ID 00000’ with the numeric characters flashing.
Enter the electronic monitoring system identification number (written on the label of the
electronic monitoring system or the tally) using the keypad. The numeric characters will
stop flashing and the ID will change from the right as the numbers are entered.
When the number is entered, check again that it corresponds to the number shown on the
label of the tally or the electronic monitoring system. If incorrect, use the backspace key
to delete the incorrect digits and then insert the correct number. Press the key. The
following visual changes take place on the ECB and the electronic monitoring system:
1. The channel screen momentarily displays the electronic monitoring system identification number and then changes to Time
of Whistle (TOW).
2. The Time to Whistle (TTW) value is shown on the display of the electronic monitoring system.
3. The on-line radio icon illuminates green continuously, confirming a successful radio link with the electronic monitoring
system.
4. The electronic monitoring system indicates an active communication link. Details are shown in Radio Contact: Section A.4.1
on Page 31 (Bodyguard®II), Section B.2.1 on Page 33 (Bodyguard®7000) or the instructions for use (Connect ECU).
Once fully logged on, the wearer is released for entry to the risk area.
5.3 Monitoring Data
5.3.1 Entry Control Board
Updated data is received every 20 seconds from each logged-
on electronic monitoring system and is displayed on the
associated channel screen of the ECB. The Time of Whistle
information (as shown) is the standard default data displayed.
The following additional data is available to the controller:
Time to Whistle.
Pressure.
Temperature of the electronic monitoring system
(Bodyguard®II or Connect ECU only).
Time elapsed.
Contact Dräger for details of other data that can be
displayed.
Repeatedly pressing the information button (within 10 seconds of each data change) scrolls between the data options for all
active channels. After 10 seconds, all active channel screens will default back to Time of Whistle. A single sharp beep sounds
each time the key is pressed.
NOTICE
Commence input with the first whole number; ignore any prefixed zeros.
NOTICE
The clock icon illuminates green when a default time display is shown on the channel screens (Time of Whistle or Time
to Whistle).
1453
1454
1455
Example Code
i
i
1452
i
i

16 Dräger PSS®Merlin®
In Use
5.3.2 Time to Whistle
Repeatedly press and release the information button until the status display shows
TTW BG (Time to Whistle of the electronic monitoring system).
All the active channel screens change to show the actual Time to Whistle status for each
of the logged-on electronic monitoring system. After 10 seconds, all the active channel
screens will default to Time of Whistle.
5.3.3 Pressure
Repeatedly press and release the information button until the status display shows
BAR (pressure).
All the active channel screens change to show the actual pressure status for each of the
logged-on electronic monitoring system. After 10 seconds, all the active channel screens
will default to Time of Whistle.
5.3.4 Temperature (Bodyguard®II and Connect ECU only)
Repeatedly press and release the information button until the status display shows
TEMP °C (temperature of the electronic monitoring system).
All the active channel screens change to show the temperature status for each of the
logged-on electronic monitoring system. After 10 seconds, all the active channel screens
will default to Time of Whistle.
5.3.5 Time elapsed
Repeatedly press and release the information button until the status display shows
TIME EL (actual time elapsed since activation of the electronic monitoring system).
All active channel screens change to show the actual time elapsed for each of the logged-on
electronic monitoring system.After 10 seconds, all the active channel screens will default to
Time of Whistle.
5.3.6 Whistle Warning Activation
An audible and visual warning signal is available on the ECB that will alert the ECO of the imminent activation of the whistle
warning of a logged-on electronic monitoring system.
The ECO is also alerted to the actual activation of the whistle warning of the electronic monitoring system.
Both alarms are recognised by a single double-beep and the associated channel screen continuously flashing.
NOTICE
During the commissioning process it is possible to program the first alarm timing to meet customer requirement. Unless
otherwise requested, this first alarm default is 10 minutes before the activation time of the whistle.
1456
1457
1458
1459
i
i

In Use
Dräger PSS®Merlin®17
5.4 Communication from ECB to Electronic Monitoring System
5.4.1 Evacuation Signal – Selective
This procedure allows the ECO to select and signal to a specific logged-on unit, or a
designated number of units (team), to evacuate the risk area and return to the control point.
ECO – Press and hold the selected channel evacuation button until the red LED above the
button begins flashing and a sharp double-beep is emitted, indicating the signal is being
transmitted.
Electronic monitoring system – The selected unit(s) emit a repeating audible beep alarm
and the evacuation symbol is shown on the electronic monitoring system display.
To acknowledge the evacuation request the wearer presses and releases the RH button
of the electronic monitoring system. When the RH button is released, the electronic
monitoring system display returns to the normal operating screen.
ECO – On acknowledgement of the evacuation signal from the wearer, a short trill alarm is activated on the ECB. The red
LED above the channel evacuation button stops flashing and illuminates continuously, indicating that the signal has been
received and acknowledged by the wearer.
5.4.2 Evacuation Signal – All
This procedure allows the ECO to signal to all logged-on units to evacuate the risk area and
return to the control point.
ECO – Press and hold the evacuation (all) button until the red LED to the right of the
button illuminates and begins flashing, and a double sharp beep is emitted. The red LED
above the channel evacuation button of each of the logged-on channels also begins
flashing, indicating the signal is being transmitted.
Electronic monitoring system – All units emit a repeating audible beep alarm and the
evacuation symbol is shown on the electronic monitoring system display.
To acknowledge the evacuation request the wearers press and release the RH button of
the electronic monitoring system. When the RH button is released, the electronic monitoring system display returns to the
normal operating screen.
ECO – On acknowledgement of the evacuation signal from each wearer a short trill alarm is activated on the ECB. The red
LED above the channel evacuation button of each acknowledged channel will stop flashing and illuminate continuously
indicating that the signal has been received and acknowledged by the wearer.
The red LED to the right of the evacuation (all) button flashes until the evacuation request has been acknowledged by
all logged-on units.
NOTICE
The sequence can be repeated as required until the wearer has returned to the control point.
1460
i
i
1462

18 Dräger PSS®Merlin®
In Use
5.5 Communication from Electronic Monitoring System to ECB
5.5.1 Voluntary Withdrawal Signal
Should the wearer of the breathing apparatus make a decision to withdraw from an incident,
a signal can be transmitted to the ECB by pressing and holding the RH button of the electronic
monitoring system until the withdrawal request icon is displayed. On observing the radio icon,
the wearer should release the RH button.
ECB – The voluntary withdrawal icon of the associated channel flashes (amber) and
an intermittent alarm sounds indicating that the signal has been received from the
electronic monitoring system.
ECO – Having been alerted, identifies the wearer and confirms the alarm by pressing the
button of the appropriate channel. The alarm stops, the voluntary withdrawal icon stops
flashing and illuminates continuously indicating that the signal has been received and
acknowledged.
Electronic monitoring system – On acknowledgement from the ECO the electronic
monitoring system emits a short audible alarm, during which time the withdrawal request
icon is displayed. When the alarm stops, the electronic monitoring system display returns
to the normal operating screen.
5.5.2 Automatic Distress Signal Unit (ADSU) – Motion Sensor
Refer also to the Instructions for Use for the electronic monitoring system.
A motion sensor is incorporated in the monitoring device. If movement is not detected for a
period of time, the instrument emits an audible pre-alarm to the wearer (not to the ECB). This
alarm is automatically cancelled if movement is detected within a period of time.
If no movement is detected during the pre-alarm then a higher level main alarm is activated.
The screen of the electronic monitoring system displays the automatic distress alarm icon and
a signal is transmitted to the ECB.
ECB – The motion alarm icon of the associated channel flashes (red) and an
intermittent alarm sounds indicating that the signal has been received from the
Bodyguard®.
ECO – Having been alerted, identifies the wearer and confirms the alarm by pressing the
button of the appropriate channel. The alarm stops, the motion alarm icon stops flashing
and illuminates continuously indicating that the signal has been received and acknowledged.
NOTICE
The sequence can be repeated as many times as required by the wearer.
NOTICE
Recovery procedures should be in line with established guidelines and control
procedures.
1464
i
i
1465
i
i

In Use
Dräger PSS®Merlin®19
5.5.3 Distress Signal Unit (DSU) Manual Alarm – Panic Button
Should the wearer of the breathing apparatus become distressed or require assistance then
pressing the panic button activates the main audible alarm of the electronic monitoring system.
The screen of the electronic monitoring system displays the manual distress alarm icon and a
signal is transmitted to the ECB.
ECB – The distress signal icon of the associated channel flashes (red) and an
intermittent alarm sounds indicating that the signal has been received from the
Bodyguard®.
ECO – Having been alerted, identifies the wearer and confirms the alarm by pressing the
button of the appropriate channel. The alarm stops, the distress signal icon stops flashing
and illuminates continuously indicating that the signal has been received and acknowledged.
Electronic monitoring system – The electronic monitoring system remains in main alarm
condition until cancelled by the wearer.
5.5.4 Loss of Radio Contact (Entry Control Board – Electronic Monitoring System)
If there is a loss of radio contact between the ECB and the electronic monitoring system then the on-line radio icon of the
affected channel of the ECB flashes (green). The electronic monitoring system indicates the communication loss to the wearer
as detailed in Section A.4.4 on Page 31 (Bodyguard®II), Section B.2.4 on Page 33 (Bodyguard®7000) or the instructions for use
(Connect ECU).
During loss of radio contact the following should be noted:
The on-line radio icon of the affected channel of the ECB flashes.
The associated channel screen will not be updated using data transmitted from the electronic monitoring system. Data will
change against real time as follows:
TTW – If the ECB default is Time to Whistle, the channel screen time will count down at one-minute intervals from the time
of loss of radio contact.
TOW – If the ECB default is Time of Whistle the channel screen time will remain at the time shown at the point of loss of
radio contact.
When contact is re-established, the on-line radio icon of the ECB illuminates continuously and the electronic monitoring system
display returns to the normal operating mode. The associated channel screen data are updated at the next data signal
transmission from the electronic monitoring system.
5.6 After Use
All wearers of breathing apparatus that are logged on to an ECB must return to the Entry Control Point (ECP) to ensure that the
log-off procedures are followed. The procedures must be carried out under the supervision and control of the Entry Control Officer
(ECO).
5.6.1 Log Off Procedure
The breathing apparatus is to be shut down by the wearer as described in the After Use section of the Instructions for Use
supplied with the equipment (remove mask, close cylinder valve and fully vent the system). The display of the electronic
monitoring system will indicate zero pressure and zero Time to Whistle. The ECB will emit two short audible beeps and the
associated channel screen of the ECB will flash the Time of Whistle data that will be the same as the time shown on the ECB
clock.
NOTICE
Recovery procedures should be in line with established guidelines and control
procedures.
NOTICE
In case of long communication loss, recovery procedures should be in line with established guidelines and control
procedures.
1466
i
i
i
i

20 Dräger PSS®Merlin®
In Use
At the ECP the ECO identifies the wearer then removes the tally from the associated channel. The ECO records an exit
dosimeter reading if necessary and hands the tally to the wearer. On removing the tally, the channel screen begins to alternate
between the electronic monitoring system identification number and the Time of Whistle data.
The wearer should switch off the electronic monitoring system. A log-off signal will be transmitted from the electronic
monitoring system to the ECB.After up to 20 seconds the channel screen will switch off and the electronic monitoring system
will return to sleep mode.
Repeat the procedure for all logged-on units. The ECB will return to sleep mode when all electronic monitoring system have
been logged off.
5.6.2 Forced Log Off Procedure
If a permanent loss of the communication link has occurred, the ECO shall carry out the following forced log off procedure. This
procedure returns the ECB to sleep mode.
Press and then release the key of the keypad. The status display changes to show
QUIT.
Repeatedly press the or key of the keypad to scroll the display until LOGOFF is
shown and then press the key. The display will change to show CHAN 00 with the
numeric characters flashing.
Enter the channel number to be logged off using one of the following methods:
Press the appropriate numeric keys of the keypad. The numeric characters will stop
flashing and will change from the right as the number is entered.
Press the evacuation button of the appropriate channel. The channel number will be
entered automatically on the display.
Remove the tally, then press the key. The display changes to the selected channel
(e.g. CHAN04) with the no (N) symbol flashing. Use the or key to toggle yes (Y).
When CHAN04 Y is displayed press the key, the display will change to LOGOFF.
Repeat the procedure for any further modules requiring a forced log off.
NOTICE
The electronic monitoring system will remain in operating mode until it is switched off (deactivated).
NOTICE
Following the incident, a faulty tally (that required a manual logon procedure) must be reported and replaced as soon as
possible.
If a permanent loss of the communication link has occurred between the ECB and a logged-on electronic monitoring
system, carry out a forced log off (see Forced Log Off Procedure below).
NOTICE
A single sharp audible beep signal sounds each time a key is pressed.
NOTICE
If the tally has not been removed, the display will not toggle between N and Y.
i
i
i
i
i
i
1467
1468
1469
1471
1472
i
i