Dräger Medical Zeus Technical Documentation Manual page 150

The cylinder pressures (supply pressure) are shown on the self-test screen.
Open the relevant high-pressure cylinder slowly until a flow of 80 L/min is reached.
The supply pressure is less than 10 bar. Close the high-pressure cylinder.
Connect the connecting hose of the high-pressure regulator to the Zeus.
3.8.3 Downstream pressure test
Close the high-pressure cylinders.
Disconnect the connecting tube of the high-pressure regulator being tested from the Zeus and
connect it to a pressure gauge (measuring range 10 bar).
Open the high-pressure cylinder.
Read the downstream pressure on the pressure gauge.
Variant 2.5 bar -> downstream pressure 2.4 to 2.95 bar.
Variant 5 bar -> downstream pressure 5 to 6 bar.
3.8.4 Blow-off valve test
Info:
This test requires the use of a controllable high-pressure regulator (control range up to 10 bar)
with an high-pressure cylinder.
Prepare the following test set-up.
Legend to figure:
1 = High-pressure cylinder on Zeus
2 = High-pressure regulator on Zeus
3 = Connecting hose to Zeus
4 = Pressure gauge, measuring range 10 bar
5 = Controllable test pressure regulator
6 = Test cylinder
Leave the high-pressure cylinder on Zeus (1) closed.
Adjust the least possible pressure on the test pressure regulator.
Open the test cylinder (6).
Use the test pressure regulator to increase the pressure until the blow-off valve opens and a flow
noise can be heard. Repeat this procedure twice and then read the opening pressure off the
pressure gauge (4) of the test pressure regulator (and record the value).
Zeus 2005-03 Released
- page 17 -
[_______OK]