46 Functional checks
Note Check the test bag before each functional
check. The balloon of the test bag must be un-
damaged and firmly connected to the connec-
tor. Have the test bag serviced at the same time
as the device.
7.2 Obligatory checks
Before each use:
• Carry out a functional check.
After each use or dismantling:
• Clean, disinfect or sterilize the ventilator and its
components (note “6. Hygienic preparation“ on
page 39);
•Check the:
– lip membrane in the patient valve
– valve membrane in the expiration arm
– valve membrane in the spontaneous breath-
ing arm (note “7.4 Check of patient valve“
on page 48). They may be neither crinkled,
sticky or misshapen.
• Carry out a functional check.
At least every 6 months, if the ventilator
has not been used in the intervening
period:
• Carry out a functional check.
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