2. Functional check before use
2020-04-24
OI06H-0218 SR 520
5
2.1
Turn the flow meter bag
inside out and the flow meter
appears.
2.2
Place the head-top in the
flow meter and start the fan
unit. Grip the bag to seal
around the breathing hose.
Grip the flow meter tube with
the other hand, the tube will
point 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, (175 l/min).
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.
