Mindray WATO EX-55, Service Manual

Page: 39 / 322

3-3
3.3.1 Check the Cylinders are Full
1. Set the system switch to the position and connect the cylinders to be checked.
2. Open each cylinder valve.
3. Make sure that each cylinder has sufficient pressure. If not, close the applicable cylinder
valve and install a full cylinder.
4. Close all cylinder valves.
3.3.2 Cylinder High Pressure Leak Test
1. Make sure that the system switch is in the position.
2. Close the auxiliary O2 supply flowmeter if auxiliary O2 supply is configured.
3. Open the cylinder valve.
4. Record the current cylinder pressure.
5. Close the cylinder valve.
6. Record the cylinder pressure after one minute. There is a leak
‹ If the cylinder pressure for drive gas decreases more than 5000 kPa (725 psi).
‹ If the cylinder pressure for non-drive gas decreases more than 690 kPa (100 psi).
‹
In this case, install a new cylinder gasket and repeat steps 1 through 6. If the leak
continues, do not use the system.
7. Repeat
3.3.2Cylinder High Pressure Leak Test
for each cylinder.
3.4 Flow Control System Tests
3.4.1 Without O2 Sensor
WARNING
z
If N2O is available and flows through the system during this test, use a safe and
approved procedure to collect and remove it.
z
Incorrect gas mixtures can cause patient injury. If the O2-N2O Link system does
not supply O2 and N2O in the correct proportions, do not use the system.