Bodyguard
®
II Portable Radio Unit
Dräger PSS
®
Merlin
®
31
There is a battery fault condition. Contact Dräger if a fault condition is suspected.
A flashing green LED indicates a full charge. Remove the battery and assemble the battery to the Portable Radio
Unit. See Section A.5.1 on Page 31 for instructions on fitting and removing the battery.
A.4 In Use
A.4.1 Radio Contact (Entry Control Board – Portable Radio Unit)
When the Portable Radio Unit is successfully logged on to an entry Control Board, the green
and red LEDs on the IR Link Unit flash alternately confirming:
A successful radio link with the ECB – flashing green.
A satisfactory charge condition of the radio battery – flashing red.
A.4.2 Evacuation Signal from ECB to Bodyguard
®
When the ECO instigates an evacuation signal, the Bodyguard
®
emits a repeating audible
beep alarm and the running man icon appears in the display.
Acknowledge the evacuation request by pressing the RH button of the Bodyguard
®
(a single
beep is emitted). Immediately release the button and the display will return to the normal
operating screen.
Evacuate immediately to the control point.
A.4.3 Voluntary Withdrawal Signal from Bodyguard
®
to ECB
Press and hold the RH button of the Bodyguard
®
until the radio icon is displayed and then
release the button. The Bodyguard
®
display returns to the normal operating screen.
On acknowledgement from the ECO the Bodyguard
®
emits a short audible alarm, during
which time the radio icon is displayed. When the alarm stops, the Bodyguard
®
display
returns to the normal operating screen.
A.4.4 Loss of Radio Contact (Entry Control Board – Portable Radio Unit)
If there is a loss of radio contact between the ECB and the Portable Radio Unit, the green LED
at the rear of the Bodyguard
®
will stop flashing. The lost communication icon will alternate with the clock icon on the
Bodyguard
®
, accompanied by an audible beep tone. When radio contact is re-established, the Bodyguard
®
returns to the normal
operating mode.
A.5 Service Information
A.5.1 Removing/Fitting the Portable Radio Module Battery
Tools Required
Release Key 3351827
To remove the battery, insert the pins of the release key into the two holes in the base of the radio module. Press the key into
the module until the locking mechanism is released and the battery retracts (approximately 5 mm). Remove the key and then
slide and remove the battery.
Before fitting the charged battery, check that the O-ring seal of the boss is in position and undamaged and that the dovetail
guide of the battery and the radio module are clean and undamaged.
Align the battery in the dovetail guide and slide the battery pack along the guide until an audible click is heard. The green LED
of the IR Link Unit on the rear of the Bodyguard
®
momentarily illuminates indicating satisfactory contact. Correct retention is
indicated when the red indicators are visible in the two release keyholes in the base of the radio module. To further ensure
positive retention, grip the battery and attempt to remove – there must be no movement.
NOTICE
An intermittent short flash off the red LED indicates a low charge condition
of the Portable Radio Unit battery. Fit a fully charged battery.
NOTICE
If the running man icon reappears, press the RH button again. The display will change to the normal operating screen.
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