12-2
12.2 Maintenance Schedule
Interval Part/accessory Procedure
Each patient or
as necessary
Patient tubing (including
mask, inspiratory filter,
flow sensor, expiration
valve and membrane)
Perform pressure and flow zeroing. Perform
System Check. Perform flow sensor calibration
(refer to 12.4). Replace with disinfected parts or
new disposable parts.
As necessary Inspiration safety valve
assembly
When the patientās exhaled gas may contaminate
the inspiration safety valve assembly, it is
necessary to replace with disinfected inspiration
safety valve and membrane (refer to 11.2.2).
Expiration valve Replace the expiration valve if it is damaged
(refer to 11.2.1ļ¼.
CO
2
calibration Calibrate the CO
2
module when the CO
2
measured value has a great deviation.
Touch screen Calibrate the touch screen if its function is
degraded.
Several times a
day or as
necessary
Patient tubing Check the patient tubing and water traps for water
build-up. Empty water build-up if there is.
Inspect the parts for damage. Replace as
necessary.
During cleaning
and setup
Ventilator Inspect the parts for damage. Replace as
necessary.
Daily or as
necessary
Ventilator Clean the external surfaces.
O
2
cell Calibrate the O
2
cell.
Before each use
or after
continuous use
of two weeks
Entire ventilator Perform System Check. Check the breathing
system resistance and leakage.
Monthly or as
necessary
Air intake dust filter and
fan dust filter
Check the dust filter for dust build-up. Clean or
replace as necessary (refer to 11.2.4).
Check every 6
months and
replace every
two years
Lithium battery Check the charging and discharging of the lithium
battery every 6 months and replace the lithium
battery every two years. Contact us for
replacement.
Annually or as
necessary
Inspiration safety valve
membrane
Check the inspiration safety valve membrane.
Contact us for replacement if necessary.