Operator’s Manual of Anesthesia System 9 - 3
Maintenance Maintenance Schedule
9.1 Maintenance Schedule
The schedules listed below are the minimum frequency based on 2,000 hours of usage per year. The
equipment should be serviced more frequently if used more than this yearly usage. Maintenance
should be performed by a trained technician.
NOTE: During cleaning and setup, inspect the parts and seals for damage.
Replace or repair as necessary.
Table 9-1 Maintenance schedule
9.2 Breathing System Service
When cleaning the breathing system, replace any parts that are visibly cracked, chipped, distorted or
worn. For details, refer to "Inspect the System" on Pages 5-5 and "Cleaning and Disinfection" on Pages
9-8 for specific operations.
MINIMUM
MAINTENANCE
FREQUENCY MAINTENANCE
Every day Clean the external surfaces.
Every 72 hours Perform the 21% O2 calibration to keep O2 sensor accuracy for the anesthesia
system not connected to the air supply. The anesthesia system not connected to
the air supply cannot automatically perform O2 sensor calibration when powered
on.
Every 30 days Visually check the equipment to ensure that worn or damaged parts are replaced in
a timely manner.
Every year Perform periodic maintenance by a trained technician.
Gas Bench calibration.
Contact Mindray Technical Support for details.
Every three years Replace the internal lead-acid cell and button cell.
Perform periodic maintenance by a trained technician.
Contact Mindray Technical Support for details.
On-demand • Calibrate the O
2
sensor after replacing the O
2
sensor or when there is a larger error
in O
2
concentration monitoring.
• Replace the O
2
sensor if it cannot be calibrated.
• Replace the soda lime in the canister if the soda lime color changes. Follow the
manufacturer’s instructions.
• Replace the flow sensor if the seal for the flow sensor is damaged, the membrane
inside the flow sensor is cracked or distorted, or the flow sensor is cracked or
distorted.
• Calibrate the flow sensor after re-installing the cleaned or disinfected flow sensor,
after replacing with a new flow sensor, or when tidal volume measurement is
inaccurate.
• Clear the water gathered in the breathing system watertrap and the gas module
watertrap.
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