210 EN MEDUMAT Standard
2
WM 68071 05/2021
9 Function check
9.5 Testing the reusable breathing circuit
Requirement The patient valve of the reusable breathing circuit is dismounted
(see "8.4 Disassembly of the reusable breathing circuit",
page 176).
1. Check all parts of the patient valve for external damage.
If necessary: Replace damaged parts.
2. Check the PEEP control diaphragm and inspect the check valve
diaphragm:
If the diaphragm is torn, wavy, distorted or sticky: Replace the
diaphragm.
3. Assemble the reusable breathing circuit (see "8.10 Assembling
reusable breathing circuit", page 190).
Result The patient valve of the reusable breathing circuit has been
checked and is ready for use.
9.6 Checking the system for leaks
Requirement The device is connected to the oxygen supply.
1. Open the valve of the oxygen cylinder slowly.
The pressure gauge on the pressure reducer indicates the
pressure in the oxygen cylinder.
2. Close the valve on the oxygen cylinder.
3. Observe the pressure gauge on the pressure reducer for
approx. 1 min:
• If the position of the needle remains constant:
the system is free from leaks
• If the needle falls, there is a leak in the system
4. If necessary: Rectify the leak
(see "9.7 Rectifying leaks in the system", page 211).
Result The system has been checked for leaks.
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