Fisher & Paykel MR810 Manuel D’Utilisation

 

32 

MR810 Technical Manual Rev C  REF 185042601

 

 

 

8 

This section outlines the performance testing required for the MR810 as part of the annual maintenance or 
after servicing of the humidifier.  

If the MR810 is intended to be used with a heated wire circuit, perform the functional check (§ 8.2) and the 
Heater-wire Mode Performance check (§ 8.3). 

If the MR810 is intended to be used with a non heated circuit, perform the functional check (§ 8.2) and the 
non Heater-wire Mode Performance check (§ 8.4). 

Check the function of the humidifier buttons and indicators as follows, allow two minutes to complete the 
test: 

1.  Apply power to the unit under test; as power is applied check that the "See Manual" indicator flashes 

briefly. 

2.  Check the operation of the power button.  Replace if necessary (refer to § 6.7). 

3.  Turn the device on.  Press the Temperature Setting button and cycle through all three settings of the 

humidifier.  If pressing the Temperature Setting button has no effect, check the button seating, and 
replace if necessary.  (Refer to § 6.7). 

4.  Using a Fisher & Paykel Healthcare compatible heated breathing circuit (such as an RT202), check that 

the LED in the heater-wire adaptor illuminates when plugged into the circuit.  If the heater-wire 
indicator remains off, consult § 5 (Troubleshooting). 

Conduct this check if the MR810 is used with heated breathing circuits. 

•

  The following test should be performed with either the RT202 kit (using the included MR290 chamber), or 

the MR370 chamber and CR140 reusable circuit kit.  Other chambers or circuits will give different results. 

•

  The test should be conducted in an ambient temperature of 23 

±

 2 °C with no drafts.  Do not conduct the 

test with a hot heater plate as this can affect the accuracy of the test.  Allow the MR810 to cool before 
starting. 

•

  Turning the device on/off, changing temperature settings, changing the gas flow, or disconnecting the 

heater-wire will require the test to be restarted. 

•

  Allow 1 to 2 hours to complete the test. 

1.  MR810 humidifier to be tested. 

2.  Single-use:   RT202 single use breathing circuit or similar. 

Reusable: 

CR900 reusable heater-wire elbow with 1.5m reusable tubing (CR140 kit). 

3.  Single-use:  MR290 chamber filled with water (included in RT202 kit). 

Reusable: 

MR370 reusable chamber filled to maximum water line. 

4.  Constant dry gas source of 10 

±

 2 l/min. 

5.  Fisher & Paykel Healthcare Thermometer, part no 900MR033.