1 GENERAL INFORMATION

1.1INTRODUCTION

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This manual is intended for use by qualified service personnel who will service and maintain the Fisher & Paykel Healthcare MR810 Respiratory Humidifier. This manual covers the following:

•Specifications

•Operation of the MR810, and controls

•Maintenance procedures

•Troubleshooting

•Servicing (full diagrams and parts list are in the appendices)

•Electrical safety test procedures

1.2GLOSSARY OF TERMS

Ambient sensor

A thermistor located in the heater-wire adaptor that allows the

Breathing Circuit

humidifier to monitor the ambient temperature.

Tubing which carries respiratory gases from the chamber to the patient.

Chamber

Vessels containing water in which gas is heated and humidified by

Heater-wire

passing it over the heated water.

Wire inside the breathing circuit that heats the respiratory gases to

Heater-wire Adaptor

minimise condensation.

Electrical connection between the humidifier and the breathing circuit.

Humidifier

The device which is used to heat the chamber to humidify the

Inspiratory Limb

respiratory gas.

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

PCB

patient.

Printed circuit board.

Respiratory gas

Gases breathed in by the patient.

Single Heated Breathing Circuit A breathing circuit that has the inspiratory limb heated by a heater-

Thermistor

wire.

A resistive device used to measure temperature.

1.3DEFINITIONS

NOTE: A NOTE provides important information or explanation of procedures or conditions that may otherwise be misinterpreted or overlooked.

Caution

A CAUTION statement designates the possibility of damage to this or other equipment if a procedure is not followed exactly.

WARNING:

A WARNING statement refers to conditions with a possibility of personal injury if a procedure is not followed exactly.

MR810 Technical Manual Revision C REF 185042601

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