7.1.2 Air Pathway Disinfection
The table below lists the parts that might get contaminated by exhaled gases or bodily fluids
during normal use or single fault condition.
Condition Parts
With bacteria filter
• Patient circuit
• Bacteria filter
Without bacteria filter
• Patient circuit
• FiO
2
sensor (if used)
• Patient air outlet/Pneumatic unit
• Air bypass unit/water chamber
• Blower/Inlet silencer
• Air inlet with filters
In case of contamination, the internal air pathways of the Nippy 4 may be disinfected up to
5 times by a maximum 60 minute long validated ozone gas process.
Low resistance bacteria filter, if used, should be replaced every 24 hours.
7.1.3 Patient Circuit
The patient circuit should be cleaned and replaced in accordance with the manufacturer’s
instructions and care provider’s instructions, where applicable. For safety information,
read 2.4 Usage of Patient Circuit, page 18.
Check the patient circuit regularly for damage. In case of damage, replace the circuit
CAUTION!
Appropriate personnel should determine the duration of use for the patient circuit based
on accepted infection control procedures.
7.2 Cleaning and Replacing the Filters
Patient air filters
NOTE
• Coarse filter (grey): This is a washable filter, wash the filter at least once a week
and replace once a year. See 7.2.1 Washing a coarse filter, page 113 for washing
instructions.
• Fine filer (white): This is a disposable filter that not shall be washed or reused.
Replace the fine filter at least every month, or more frequently when used in high
pollution or pollen-rich environments.
The patient air filters are located in the filter cassette at the side of the ventilator.
1 Turn off the ventilator and place it on a dust free surface.
112
Cleaning and Maintenance
User Manual
Doc. 006553 M-6
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