fisher--paykel mr850 Manual De Usuario

 

MR850 Technical Manual   *   Revision J   * Issued November 2005   *   Ref.  185041340 (185041713 internal)

 

7

This manual is intended for qualified service personnel who will perform maintenance and 
servicing on the Fisher & Paykel Healthcare MR850 Respiratory Humidifier.  This manual 
covers the product specifications, includes a maintenance schedule, and provides the 
necessary information required for servicing. 

NOTE: Some software may not be available in your country.  Refer to your local Fisher & 
Paykel Healthcare representative for the appropriate software version.  Maintenance 
procedures should be carried out at regular intervals (as recommended in the maintenance 
schedule), to ensure that the humidifier and its accessories are working correctly. 

If a fault should occur with the humidifier, follow the troubleshooting guide (section 6) in order to 
find the most likely cause.  If the unit requires servicing, make sure the servicing procedures are 
followed in order to prevent damage to the humidifier.  After service, or as part of the 
maintenance schedule, a humidifier performance check should be completed. 

Due to the nature of the electronics contained within this humidifier, it is not recommended that 
the printed circuit boards be serviced at component level.  Instead, if the PCBs are found to be 
malfunctioning, they should be replaced.  

Chamber  

Device that allows gas to be to be heated and humidified by passing it 
over heated water. 

Temperature / Flow 
Probe 

Sensor assembly for measuring temperature and flow of respiratory 
gases traveling through the breathing circuit.  Consists of a chamber 
and airway probe. 

Airway Probe  

Sensor assembly for measuring gas temperature at the end of the 
inspiratory limb. 

Chamber Probe  

Sensor assembly for measuring gas flow and temperature at the 
outlet of the humidification chamber. 

Thermistor  

A temperature sensitive resistor placed inside the chamber and 
airway probes. 

Chamber Set Point  

The temperature that the humidifier attempts to maintain at the 
chamber probe port. 

Airway Set Point  

The temperature that the humidifier attempts to maintain at the airway 
probe port. 

Heater Wire Adaptor 

Electrical connector between the breathing circuit and the humidifier. 

Breathing Circuit  

Tubing that carries respiratory gases to and from the patient. 

A breathing circuit that is heated by means of heater wires, in both the 
expiratory and inspiratory limbs. 

Single Heated 
Breathing Circuit 

A breathing circuit that is heated by means of a heater wire, in only 
the inspiratory limb. 

PCB  

Printed Circuit Board. 

Heater Wire  

Wire inside the breathing circuit which heats the respiratory gases. 

Inspiratory Limb  

The section of the breathing circuit that takes the inspired gases to 
the patient.