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Issue date: 17 November 2006
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LFB image 250385
‘B’ test: refit face mask to LDV
20.41
Fit the LDV to the face mask by holding the face mask in one
hand and with the LDV in the other gently push the LDV into
the ESA connection of the face mask. A ‘click’
must
be heard.
Test the connection by gently twisting and pulling the LDV
away from the face mask, it should remain secure.
’B’ test: cylinder replacement
20.42
Check the reducer cylinder connection ‘O’ ring and the anti-
vibration ‘O’ ring are in place and not damaged.
20.43
Check the reducer cylinder connection thread is free from dirt and not damaged.
‘B’ test: Inspect the replacement cylinder
20.44
Examine the cylinder:
(a)
Carry out cylinder acceptance test (for detail see section 14 for SDBA and section 16 for
EDBA).
(b)
Replace the cylinder cover (for detail see section 14 for SDBA and section 16 for EDBA).
(c)
Fit the cylinder (for detail see section 14 for SDBA and section 16 for EDBA)
(d)
The cylinder should now be held secure with no movement. Ensure cylinder cover is
correctly fitted (including the anti-entanglement straps).
’B’ test: set reduced volume mode, do not use after date, confirm BA set
I.D. and test ADSU
20.45
Press the
left
button of the Bodyguard unit. The unit will emit a single audible
‘bleep’, and then the ‘self-check’ sequence will start (see image right).
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The initial short first display (see image right).
20.47
Quickly changes to the full ‘LCD check’ icon (see image right).
20.48
The display backlight will momentarily illuminate and the blue, red, and single
green
LEDs in the lower display cluster will also momentarily illuminate (see
image right).
Note: during each sequence the outer radial segments will initially illuminate
and then begin to switch off clockwise.
20.49
When all the segments have switched off, the display will change to ‘leak test’ icon
(see image right).
