
7
Performance Test
26 SA-103-0109V1.3-HAO-GB
©
F. Stephan GmbH
7.5
Tightness of the Circle System
Fig. 5: Y – piece, feed line for control gas, rspiratory pressure gauge
1 y – piece
2 respiratory pressure gauge
3 feed line for control gas
7.5.1 Basic
setting
Flow-regulating valves on flowmeter unit
closed
Pressure-regulating valve in position CL
Remove mask from Y – piece
Slip feed line for control gas (3) onto the Y - piece, so that the circle
system forms a closed space.