Scott VISION 2 RFF1000 Operating And Maintenance Instructions Manual page 9

FITTING SPARES
To Replace the Visor:
1. Release the head harness and
remove from facemask.
2. Remove the screws from the front
cover and remove front fitting from inside
of mask. Unscrew the two visor clamp
screws, remove the visor clamps and the
visor.
3. Inspect O-Ring and if necessary
replace. Lubricate new O-Ring with MS4
Silicone Grease.
4. Position the visor over the front
fitting, ensuring that the hook on the front
fitting engages outside the visor. Fit the
tab at the top of the visor through the slot
at the top of the silicone outer mask and
feed the visor into the groove in the outer
mask.
5. Fit the visor clamps and secure with
screws and nuts. Replace front cover and
secure with screws. Ensure that the front
fitting encloses the visor rim and beds
smoothly onto the body of the front fitting.
6. Fit head harness.
To Replace the Outer Mask Inhale
Valve Flap:
1. Push out the inhale valve assembly
from inside the facemask.
2. Remove and examine the valve flap
for wear or damage and replace if
necessary. If the valve flap is not to be
renewed, it must be thoroughly cleaned in
a solution of warm, soapy water before
being re-fitted in position.
CAUTION:
DO NOT use detergent.
3. Fit the new valve flap over the valve
frame boss. Push the inhale valve
assembly into the filter thread fitting so
that the valve frame is on the outside and
check that the flap lies flat on the valve
frame.
To Replace the Exhale Valve:
1. Remove the front fitting and push
the exhale valve assembly from inside the
mask, out through the front fitting.
Check that the exhale valve and O-Ring
are in good
necessary.
2. If the O-Ring is to be replaced,
lubricate the new O-Ring with MS4
Silicone Grease.
To Replace the Inner Mask Inhale
Valve Flaps:
The valve flaps are located on the inner
side of the inner mask.
1. Carefully pull the inhale valve flaps
and valve pins from inner mask. Clean
the inner mask and fit new valve flaps.
2. Check that the valve flaps move
freely on the pin and lie flat on the inner
mask.
WARNINGS:
•
Check the valve flaps before
each use to ensure that they are
clean and undamaged.
•
Check that the inhalation valve
flaps are flexible.
•
Valves and O-Rings must be
replaced if they are damaged in
any way.
CAUTION:
Rubber components should always be
stored in clean, dry conditions away
from direct sunlight and heat.
To Replace the Speech
Diaphragm:
1. Rotate
retainer 10° anti-clockwise and withdraw
the retainer, speech diaphragm and O-
ring. Check that the speech diaphragm is
in good condition
necessary.
replacement O-Ring with MS4 Silicone
Grease.
2. Fit O-Ring
diaphragm and press the diaphragm and
O-Ring into the front fitting, black grid
first, taking care to ensure that the O-Ring
stays in place on the diaphragm. Secure
with the retainer
diaphragm, with apron uppermost.
7
VISION 2
condition. Replace
the speech diaphragm
and replace
Lightly lubricate
over the speech
for the speech
If
if
the