Execution Of The Test; Test Of The Pressure-Regulating Valve - Stephan Artec Service Instructions Manual

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7.5.2

Execution of the Test

7.6

Test of the pressure-regulating valve

© F. Stephan GmbH
While observing the respiratory pressure gauge (2), the zero-position
of which has been verified beforehand, cautiously open the flow-
regulating valve for oxygen, until the pressure gauge comes to a
standstill at constantly 60 mbar.
Read off the quantity of escaping gas at the corresponding flowmeter
tube
If leakage is less than 250 ml/min, the circle system is sufficiently
tight for operation
If the value of 250 ml/min is exceeded, the following items must be
checked:
Tightness of connecting tapers
Tightness of screw joints
Packings and O – rings
Corrugated tubes for damages
If after a repeated tightness test the inadmissibly large leakage could
not be eliminated, the service department must be notified.
Fig. 6: Y – piece, feed line for control gas, rspiratory pressure gauge
SA-103-0109V1.3-HAO-GB
7 Performance Test
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