Mindray WATO EX-65, Operator'S Manual

Page: 87 / 276

6-5
6.5.2 O2 Cylinder High Pressure Leak Test
1. Set the system switch to the position and stop O
2
pipeline supply.
2. Turn off the O
2
flowmeter.
3. Open the O
2
cylinder valve.
4. Record the current cylinder pressure.
5. Close the O
2
cylinder valve.
6. Record the cylinder pressure after one minute.
‹
If the cylinder pressure decreases more than 5000 kPa (725 psi), there is a leak.
Install a new cylinder gasket as described in
13.5Install/Replace the Gas Cylinder
.
Repeat steps 1 through 6. If the leak continues, do not use the cylinder supply
system.
6.5.3 N2O Cylinder High Pressure Leak Test
Refer to
6.5.2 O2 Cylinder High Pressure Leak Test
to do the N2O cylinder high pressure
leak test. For N
2
O cylinder, a pressure decrease of more than 700 kPa (100 psi) in one minute
represents a leak.
6.6 Flow Control System Tests
6.6.1 Without O2 Sensor
WARNING
z
Sufficient O
2
in the fresh gas may not prevent hypoxic mixtures in the breathing
system.
z
If N
2
O 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 O
2
-N
2
O Link system does
not supply O
2
and N
2
O in the correct proportions, do not use the system.
NOTE
z
Slowly open the cylinder valves to avoid damage. Do not adopt flow controls
forcibly.