3-1
Chapter 3: Calibration and Maintenance
3.1 Service Maintenance Schedule
The device should be maintained in accordance with the procedures detailed in this manual. Service
maintenance must be performed by a technically competent individual.
This schedule lists the minimum frequencies. Always follow hospital and local regulations for required
frequencies.
SENSITIVE TO ELECTROSTATIC DISCHARGE CAUTION
An Electrostatic Discharge (ESD) Susceptibility symbol is displayed to alert service personnel that
the part(s) are sensitive to electrostatic discharge and that static control procedures must be
used to prevent damage to the equipment.
Warning: After performing any repair or calibration, always perform the Service Checkout
Procedure before putting the device back into service.
Frequency Details
Annually Perform the electrical safety and calibration procedure as described in the
service manual.
Calibrate the scale as described in the service manual.
Perform supply valve leak test on the Oxygen system.
Replace vent screen on the Oxygen system.
Replace sensor on the Oxygen system. It is recommended that both sensors be
replaced at the same time. Sensor life of one year is approximate. If the sensor
is used often at high oxygen concentrations, sensor life will decrease.
Replace the clock battery.
Every two years Replace the PF battery.
Note: The PF Battery is used to sound the power failure alarm and to power
memory circuits during a power failure.
Every three years Calibrate the humidifier as described in the service manual. This action is to be
performed by authorized service personnel.
Replace the fan motor.
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