Appendix 3
476
Issue date: 17 November 2006
67 of 80
UNDERTAKE LEAK TEST
EV
CHECK IN ORDER
P
PYP
22
PRESS
and
HOLD
the Bodyguard
LEFT
button until the
‘return arrow’
icon
appears.
RELEASE
to start the ‘self-check’
sequence.
23
When the ‘leak test’ icon appears
PRESS
the
LEFT
button.
24
The ‘open cylinder’
icon momentarily appears before the
display changes to ‘close cylinder’ and ‘press right’
button
alternating icons.
CLOSE
the cylinder valve and then
PRESS
the
RIGHT
button
to confirm.
25
WAIT
– Stabilisation taking place.
26
‘Leak test timing’
icon appears for approximately one minute.
Bar segments progressively switch off clockwise.
Note:
during the leak test a pressure drop of up to
10
bar is acceptable.
27
On completion, the ‘leak test passed’ icon is displayed.
Note: the ‘breathe down’ sequence should be completed within three minutes
of the
‘
leak test pass’
icon being displayed. The timing out of Bodyguard would
necessitate the leak test being repeated. Re-open the cylinder valve and repeat
testing from EV 22.
28
If the: ‘leak test failed’ icon appears:
PURGE
remaining air by operating additional flow button.
CHECK
cylinder connection and LDV connection to face mask.
UNDERTAKE second leak test
from EV 22
– If test fails again return set to
OSG as defective.
