SR540ex supplied-air face shield
—
How to
Copyright © 2020 by The S.E.A. Group
3
Connect the hose to the face shield. Turn it
clockwise about 1/8 of a turn.
…
control flow
Check that the fan unit is complete, correctly
mounted, thoroughly cleaned and undamaged.
Turn the flow meter bag inside out and the flow
meter will appear.
Place the head top in the flow meter and start
the fan unit.
Grip the lower part of the bag to seal around the
breathing hose.
Grip the flow meter tube with the other hand so
that the tube points vertically upwards from the
bag.
Read the position of the ball in the tube. This
should hover at a level with or slightly above the
upper marking on the tube.
If minimum flow is not achieved, check that:
•
The flow meter is held upright.
•
The ball moves freely.
•
The bag seals well around the hose.
