Fisher & Paykel MR730 User Manual

58

Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001

1 

Fill the humidification chamber with water and slide on to the heaterbase.

2 

If a gas supply is used, set to 2- 10 l/minute, if no gas supply used, the breathing tube should be supported
from the patient end so that it drops vertically over its entire length to the top of the chamber.

3

Insert the middle sensor of the temperature probe into the connector on top of the chamber , and the end
sensor of the temperature probe into the connector at the end of the breathing tube, plug the temperature probe
plug in to the humidifier.

1

Turn the humidifier on.

2

Turn Temperature Set control to 31.0 ± 0.1 °C, check that correct setting flashes on display after adjustment.

The airway circuit under the low flow conditions of the test will warm up only slowly and may give a low
temperature alarm. If this is muted the circuit will eventually warm up and start controlling.

3

Check after one hour that digital display is 31.0 ± 1.0 °C.

If temperature is still outside these limits leave the test going for a further 15 minutes.

4

If displayed temperature is within 31.0 ± 1.0 °C, press chamber temp button and check chamber temperature is
35 to 66 °C.

5

In Engineering menu (appendix A2) check:

hp (heaterplate temperature) > 36 °C
Set = 31.0 ± 0.1°C

6

Check that disconnecting the temperature probe gives an audio alarm and Temp Probe LED flashes.

7

Press Mute button and check the alarm is silenced.

8

If the Humidifier passes these tests it is controlling correctly and can be returned to use.