Maintenance Schedule Maintenance
7 - 4 046-003777-00 A5/A3™ Operating Instructions
7.3 Maintenance Schedule
The schedules listed in TABLE 7-1 are the minimum frequency based on 2000 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 7-1 Maintenance Schedule
7.4 Breathing System Maintenance
When cleaning the breathing system, replace any parts that are visibly cracked, chipped, distorted or
worn. For details, refer to
‘‘Inspect the System’’ on page 4-3 and ‘‘Cleaning and Disinfection’’ on page
7-11.
MINIMUM
FREQUENCY
MAINTENANCE
Daily Clean the external surfaces.
Every 72 hours Perform 21% O
2
calibration (O
2
sensor in breathing system).
The A5/A3 will prompt the user for 21% O
2
calibration (only for units with an
galvanic O2 cell).
Monthly Water trap on AG module.
Annually Periodic maintenance due, to be performed by a trained technician.
Gas Bench calibration.
Contact Mindray Technical Support for details.
Every three years Periodic maintenance due, to be performed by a trained technician.
Contact Mindray Technical Support for details.
As necessary • Perform 100% O
2
calibration after replacing the O
2
sensor.
• Replace the O
2
sensor if it cannot be calibrated.
• Before installing the cylinder, use a new cylinder gasket on the cylinder yoke.
• Empty the water trap if there is water buildup.
• Replace the soda lime in the canister if soda lime color change is detected. 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.
• Replace the waste gas transfer tube if it is damaged.
• Inspect the O2 flush button for normal movement. If not ,refer to the service
manual for the disassembling and cleaning.
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