Dräger PSS BG 4 RP, Instructions For Use Manual

Page: 68 / 78

68
Maintenance en
4.5.14 Closing the protective cover

When all the tests have been completed successfully, close
the protective cover on the closed-circuit breathing appara-
tus (see chapter 3.3.1 on page 51).
4.6 Inserting or replacing the Bodyguard
battery
The period of use of the battery depends on the following
factors:

Operating time of the Bodyguard

Frequency of alarms

Ambient temperature

Frequency of use of the back lighting
A small amount of energy is consumed even when the
Bodyguard is switched off. Dräger therefore recommends
removing the battery from the Bodyguard when the Bodyguard
is not being used for an extended period.
1. Use a hexagon key (2 mm) to remove the 3 bolts from the
battery compartment cover.
2. Carefully remove the cover.
3. Remove the old battery if necessary.
4. Insert the battery into the Bodyguard. Ensure that the positive
pole is positioned correctly.
5. Insert the cover in the battery compartment.
6. Tighten the 3 bolts with a hexagon key (2 mm; torque:
0.4+0.1 Nm).
The Bodyguard starts the self-test sequence. The Bodyguard
returns to operating mode: The operating mode display
appears once again. The green LED starts to flash.
7. Simultaneously press the right and left hand button until a
short beep sounds.
8. Release the buttons.
The Bodyguard switches off.
4.7 Testing the functional capability of the
Bodyguard
The Bodyguard can be tested as follows without the cylinder
valve having to be opened:
1. Press the left button on the Bodyguard briefly.
The Bodyguard switches itself on and tests all interfaces
and the charge status of the battery.
If the Bodyguard is OK, a pressure of 0 bar and a remaining
period of use of 0 minutes is displayed. The red LEDs flash.
2. Switch off Bodyguard.
Simultaneously press the right and left hand button until a
short beep sounds. The charge status of the battery is dis-
played for approx. 3 seconds. The Bodyguard switches off.
The Bodyguard can display the following results:
WARNING
Only use the approved batteries given on supplement
90 21 716 and on the battery label in the battery
compartment.
Never replace the battery in potentially explosive
areas! Otherwise there is a risk of explosion!
!
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WARNING
After this functional test, the closed-circuit breathing
apparatus must not be used because the cylinder
valve is closed and no oxygen is supplied to the circuit.
Failure to follow this warning could lead to death or
serious injury.
Display on the Bodyguard Meaning
The test has been completed
successfully. The closed-cir-
cuit breathing apparatus can-
not be used, however, as the
compressed oxygen cylinder
is closed.
An error has occurred.
Do not use the closed-circuit
breathing apparatus.
Check once again if the
closed-circuit breathing ap-
paratus functions correctly or
have the device serviced by
Dräger or trained experts.
Battery warning 1
A long warning tone sounds
at the same time.
With normal use of the Body-
guard, the closed-circuit
breathing apparatus remains
fully functional for up to
4 hours. To ensure safe us-
age, the battery should be re-
placed, however.
Battery warning 2
5 short alarm tones sound
and the red LEDs flash at the
same time.
The Bodyguard automatically
powers off and any further
operation is impossible.
The battery must be replaced
before any new operation.
!
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