AIRSHIELD
-9-
If the flow rate is not sufficient, replace or charge
battery pack/packs and/or change the main filter
and re-test.
After completing the functional test, switch the
Airshield off and remove the air flow indicator.
Functional Test
The purpose of this test is to ensure that the
airflow through the respirator is in excess of
Airshield minimum design value of 140 litres per
minute. Proceed as follows:
■ Invert the Airshield and fit the air flow
indicator over the fan-motor unit, ensure it is
firmly pushed against the grommet.
■ With the fan-motor unit running, hold the
Airshield so that the air flow indicator tube is
vertical and the holes around the base of the
air flow indicator are not obstructed. The red
ball must be at the top of the tube to ensure
the minimum design flow rate is being
exceeded.
Fitting Procedure
Press and turn the ratchet knob anti-clockwise to
enlarge the headband and lift the visor towards
the back of the headband.
Fit the Airshield onto the head by entering the
head into the headband.
Switch the fan-motor unit on and lower the visor
over the face.
ASSEMBLY & ADJUSTMENT
Battery Pack Removal and
Replacement
Release the cover by lifting the left and right
sides to disengage the lugs then pull forward
and lift. The battery housings are located on
either side of the main filter. Use two fully
charged battery packs for eight hours duration or
one battery pack for four hours duration. Plug a
fully charged battery pack into the connector and
push it down into the housing. Repeat for the
opposite side if two battery packs are required.
Lower the cover and push backwards to engage
the lugs into the holes. Ensure the lugs are fully
engaged in the holes.
When opening and closing top cover
ensure knobs are loose, tabs are
released and cover is slid forward.
This prevents filters from rubbing
against each other.
IMPORTANT!
MANU-AIR v5.0 16/5/05 11:24 am Page 9
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