Appendix 4
476
Issue date: 17 November 2006
76 of 80
EV
CHECK IN ORDER
P
NYP
46
BREATHE
steadily until the air is exhausted (0
bar displayed) and the face mask collapses onto
your face.
47
CONTINUE HOLDING BREATH
for approximately
8 seconds
whilst slowly
moving your head up, down and side-to-side to ensure the face mask is not
leaking inwardly (negative pressure).
This will be noted by the face mask failing to remain ‘sucked down’ onto your face.
48
After
8 seconds
,
BREATHE OUT SLIGHTLY
, release sliding buckles and remove the face
mask.
CHECK
the operation of radio interface equipment if fitted.
49
EXTEND
straps,
WIPE
the face mask seal and inner mask with a damp PALTECH wipe.
CHECK
and ensure the two inner mask non-return valves are still in place and are seated
correctly.
RESTOW
the face mask in the face mask bag.
Note: do not attach neck loop retaining stud.
50
FILL OUT
the BA tally (enter rounded down pressure noted at EV 44).
ENSURE
that printed details on the BA tally are clear and enter rank and name.
51
CHECK
operation of BA set retaining bracket and adjust height if
appropriate.
CONNECT
charging lead.
REPLACE
BA set and ensure that the BA set is being charged (indicated
by
green
LED on rechargeable battery pack and Bodyguard displaying
‘battery charging’ icon).
ENSURE
retaining bracket holds the BA set is securely.
52
PLACE
BA tally into entry control board (ECB).
ENSURE
signal is achieved (
green
and
blue
LEDs illuminated on Bodyguard
and ‘telemetry signal radio’ icon displayed on ECB).
53
REPLACE
Bodyguard key.
CHECK
that the Bodyguard returns to the ‘battery charging’ icon.
54
CHECK
if available, that the spare cylinder is correctly stowed and is within the hydraulic test
date.
Note: EDBA, check station stock.
55
COMPLETE
the BA log book (enter pressure recorded at the cylinder contents check EV
26).
Note: if there is a leak as a result of the ‘breathe down’ sequence above the wearer should repeat the ‘B’
test ‘breathe down’ sequence from EV 36 above, paying particular attention to correctly fitting the face
mask onto the face and the adjustment of the head harness. The straps should not be over tightened.
F6187 (January 2020, version 8)
