Clean fire extinguishing system

AR86.10-P-0120A

Clean fire extinguishing system

30.4.09



Removing

1

Switch off ignition

2

Remove covering on left and right of extinguishing agent reservoir

AR86.10-P-0103A

3

Disconnect electrical connector from extinguishing agent tank 1 squib (R42x1) and electrical connector from extinguishing agent tank 2 squib (R42/1x1)

 To prevent the fire extinguishing system from being actuated, first disconnect electrical connector from extinguishing agent tank 1 squib (R42x1) or electrical connector from extinguishing agent tank 2 squib (R42/1x1) as first operation step.

AR86.10-P-0104A



Notes on squib on extinguishing agent tank

AH86.10-P-0001-04A

4

Remove extinguishing agent pressure hoses (3) from extinguishing agent tank 1 (1) and extinguishing agent tank 2 (12)



Notes on aerosol extinguishing agent tank

AH86.10-P-0001-02A

5

Screw compressed air flushing connection (7) for extinguishing agent line to one of the two extinguishing agent pressure hoses (3)

 The compressed air flushing connection (7) for extinguishing lines can be obtained from the fire extinguishing system manufacturer.

6

Connect compressed air hose (8) to compressed air flushing connection (7)

 Do not yet connect the compressed air hose (8) to the compressed air supply, because otherwise the danger exists of particles from the extinguishing agent exit holes (11) in the extinguishing agent lines being blown into the eyes.

Danger!

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.

AS00.00-Z-0010-01A

7

Lift/jack up vehicle

 When lifting the vehicle do not damage fire extinguishing agent lines on fire extinguisher, otherwise this could lead to malfunction of the fire extinguishing system

AR00.60-P-1000G



Clean

8

Connect compressed air hose (8) to compressed air supply and pressurize to approx. 10 bar

 When working on extinguishing agent lines under high pressure, always wear eye protection to protect the eyes from particles blown out.

9

Feel to ensure that air is exiting from extinguishing agent exit holes (11) in extinguishing agent lines over entire length as well as from upper engine compartment spray nozzle (9) and lower engine compartment spray nozzle (10)

 In addition visually inspect the fire extinguishing agent exit holes (11), upper engine compartment spray nozzles (9) and lower engine compartment spray nozzles (10) for contamination from wax preservation agent and underbody protection.

10

Clean clogged extinguishing agent exit holes (11) in extinguishing agent lines

 The clogged extinguishing agent exit holes (11) can be cleaned with a commercially available drill bit ( 2.5 mm).

11

Separate compressed air hose (8) from compressed air supply and remove

12

Remove compressed air connection (7) from extinguishing agent compressed air hose (3)

13

Repeat steps 5 to 11 on second extinguishing agent compressed air hose (3).

14

Blow off engine fire extinguishing system temperature sensor (B65) and rear fire extinguishing system temperature sensor (B65/1) with compressed air.

 The engine fire extinguishing system temperature sensor (B65) and rear fire extinguishing system temperature sensor (B65/1) must be clean, otherwise proper function is the fire extinguishing system is not ensured.



Checking

15

Check function of extinguishing agent reservoir squib 1 (R42) and extinguishing agent reservoir squib 2 (R42/1)

AR86.10-P-0121A

16

Check function of extinguishing agent reservoir pressure monitoring switch 1 (S62/27) and extinguishing agent reservoir pressure monitoring switch 2 (S62/28)

AR86.10-P-0122A

17

Check engine fire extinguishing system temperature sensor (B65) and rear fire extinguishing system temperature sensor (B65/1) for proper function

AR86.10-P-0123A

18

Check extinguishing agent pressure hoses (3) for damage and porous areas

 Always replace damaged extinguishing agent pressure hoses (3) immediately to ensure proper function of the fire extinguishing system.



Remove/install extinguishing agent pressure hose

AR86.10-P-0114A



Install

19

Connect both extinguishing agent pressure hoses (3) to extinguishing agent tank 1 (1) and extinguishing agent tank 2 (12) and tighten

Observe tightening instructions.



Tightening instructions for fire extinguishing system extinguishing agent lines

AR86.10-P-0114-01A



Notes on aerosol extinguishing agent tank

AH86.10-P-0001-02A

20

Disconnect electrical connector from extinguishing agent tank 1 squib (R42x1) and electrical connector from extinguishing agent tank 2 squib (R42/1x1)

 To prevent the fire extinguishing system from being actuated, connect extinguishing agent tank 1 squib electrical connector (R42x1) or extinguishing agent tank 2 squib electrical connector (R42/1x1) as last operation step.

AR86.10-P-0104A



Notes on squib on extinguishing agent tank

AH86.10-P-0001-04A

21

Install covering on left and right of extinguishing agent reservoir.

AR86.10-P-0103A

Danger!

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.

AS00.00-Z-0010-01A

22

Remove vehicle from lifting platform

 When pulling out support arms, ensure that the fire extinguishing lines of the fire extinguishing system are not damaged, otherwise this could lead to malfunction of the fire extinguishing system.