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Note: The following instructions are
for the FM4 headtop and breathing
hoses. These instructions must be
used alongside the Operating and
Maintenance Instructions for the chosen
PAPR.
PRE-USE CHECKS
Note: The life of a headtop has many
factors that make it difficult to predict
service life. Therefore the headtop
should be inspected carefully before
and after each use to ensure that it has
not become damaged. As a guideline
we would anticipate that the FM4 used
indoors and for 'occasional' use would
have a service life of five years, provided
that the equipment is stored and
maintained correctly.
HOSES
Inspect the breathing hose for any signs
of creasing and ensure that it is not torn
Ensure that both ends of the breathing
hose are free from dirt or debris
For a Spirit hose check that the grey
locking collar on the breathing hose
female connector works correctly and
is free from damage, ensure that the
witness marks are aligned with the
opening in the black collar and ready
to place over the air outlet on the Spirit
blower
For a TPOWER/Proflow hose check that
the 'O' ring is in place and in good
condition
FM4
HEADTOP
Check the head harness for signs of
damage or wear. Pay attention to the
head harness fixings and buckles, also
the neck strap, inhale and exhale valves,
hose inlet and ori-nasal inner mask
Check the harness fixings and buckles
for any perishing of rubber.
LOOSEN OFF ALL STRAPS
Check that the headtop and visor is
in a good, clean condition, free from
any damage and there are no cracks
or scratches, pay attention to the inner
seals on the facemask
Ensure the speech diaphragm is
undamaged with no holes and check the
ori-nasal inhalation valves are lying flat
Ensure that both the inhalation and
exhalation valve are in place and secure
Ensure that the visor clamp and screws
are all in place and secure
Inspect the front cover, ensure that the
two pozi-drive screws are in place and
secure.
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