See the MR850 technical manual for more detailed instructions on cleaning. Ensure that invasive mode is set for patients that have bypassed airways. The use of breathing circuits, chambers or other accessories which are not approved by Fisher & Paykel Healthcare may impair performance or compromise safety.
- Fisher Paykel Mr850 Humidifier User Manual
- Fisher Paykel Mr850 Service Manual
- Fisher And Paykel Mr850 Technical Manual
- Fisher Paykel Mr850 Humidifier Manual
OPERATION
MUTE
The mute button silences the humidifier's
audible alarm for at least two minutes. The
muted time depends on the alarm condition
and the severity of its cause.
SET-UP INDICATORS
Chamber & Airway Probes
Lights if either the chamber
probe or the airway probe is not
inserted into the breathing
circuit correctly.
Heater Wire
Lights if the heater wire adaptor
or breathing circuit has not been
connected, or is damaged.
Temperature Probe
Lights if the temperature probe
is not correctly plugged into the
MR850, or the probe is faulty.
Water Out
Lights when there is insufficient
water in the chamber. Check
water supply. Maximum time to
alarm of 20 minutes.
See Manual
The humidifier and all
accessories should be
immediately replaced and sent
for servicing.
TEMPERATURE DISPLAY
Displays the saturated gas temperature (the
lower of the airway and chamber temperatures
in °C) delivered to the patient. This display will
normally show the chamber temperature
(around 37 ± 0.5 °C for invasive mode, and
31 ± 0.5 °C for noninvasive mode).
By pushing and holding the mute button for
one second, the chamber outlet temperature
then the airway temperature is displayed. The
display will then revert to normal operation.
LOW TEMPERATURE ALARM
An audible alarm and flashing temperature
display showing 35.5 °C or lower (in invasive
mode only). Caused by cold/drafty conditions
or very high or low gas flows.
If the circumstances causing the low humidity
alarm cannot be changed then the audible
alarm acts as a reminder that the patient is
receiving inadequate humidity and may require
further intervention to maintain airway
clearance.
HIGH TEMPERATURE ALARM
A flashing temperature display showing 41 °C
or higher. The humidifier will discontinue
heating of the chamber and circuit until the
temperature decreases to within normal limits.
MODE BUTTON
This button switches between invasive and
noninvasive mode.
Invasive Mode
This mode is for patients with
bypassed airways. The humidifier
delivers gas as close to body
temperature saturated (37 °C,
44 mg/L) as possible.
Under cold or drafty conditions the chamber
temperature may drop as low as
35.5 °C in order to maintain a dry breathing
circuit.
Noninvasive Mode
This mode is for patients receiving
face mask or headbox therapy,
and delivers a comfortable level of
humidity.
ON/OFF BUTTON
Fisher Paykel Mr850 Humidifier User Manual
The humidifier will power ON if this button is
held down briefly, but must be held down for
one second to turn the humidifier off. The
humidifier will always default to invasive mode
when it is turned on.
ROUTINE MAINTENANCE
Refer maintenance to qualified service
personnel. A full technical description including
routine maintenance and service data is
contained in the Technical Manual which is
available from your supplier or Fisher & Paykel
Healthcare (REF 185041340)
WARNING: Ensure that invasive mode is
set for patients that have bypassed airways
A
B
C
D
E
F
G
H
1.
2.
3.
4.
5.
6.
SET UP
Slide humidification chamber (A) onto humidifier base and connect breathing circuit (B) (refer to humidification chamber and breathing
circuit operating instructions for further details).
Connect the temperature probe plug (C) (REF 900MR86X)to the blue socket on the humidifier base until an audible click is heard.
Push the chamber probe (D) and airway probe (E) into the breathing circuit. Make sure the chamber probe is correctly located in its key-way
and that both probes are pushed home. The probe lead can be restrained using breathing circuit clips.
Connect the heater wire adaptor plug (F) (REF 900MR8XX) to the yellow socket on the humidifier baseuntil an audible click is heard.
Connect the other end(s) of the heater wire adaptor to the breathing circuit socket(s) (G) and (H).
The humidification system is now set up and ready for use. After power on, the humidifier will default to invasive mode.
ATTENTION: Refer to operating instructions which accompany each accessory.
THE FOLLOWING
ACCESSORIES ARE
REQUIRED:
• Humidification Chamber
(e.g: MR290)
• Breathing Circuit
(e.g: RT110)
• Temperature Probe
(e.g: 900MR869)
• Heater Wire Adaptor
(e.g: 900MR800)
• Mounting Bracket
(to suit ventilator)
Choice will depend
upon application.
Please contact your local
Fisher & Paykel Healthcare
representative for
recommendations.
MR850 Technical Manual * Revision J * Issued November 2005 * Ref. 185041340 (185041713 internal)
27
6.3
“See Manual” Error Codes
The following is an explanation of the error codes that are displayed in conjunction with the See
Manual indicator flashing. A code is not displayed if the microprocessor has stopped
functioning (see technical problems - section 6.2).
Error Description of Fault
E00 No
fault
E02
Microprocessor stack overflow
E03 RAM
fault
E04 ROM
fault
E05
EEPROM version older than ROM version. Update EEPROM. Refer to Section 7.2.6
E06
EEPROM version newer than ROM version – (old software). Contact Fisher & Paykel
Healthcare
E07
Model mismatch with software, contact your Fisher & Paykel Healthcare
representative.
NOTE: included in software version 7.14 onward, except 7.21.
E10
Temperature circuit calibration out of range: Range Amp 0: 25.5 °C
E11
Temperature circuit calibration out of range: Range Amp 0: 65.0 °C
E12
Temperature circuit calibration out of range: Range Amp 1: 25.5 °C
E13
Temperature circuit calibration out of range: Range Amp 1: 34.5 °C
E14
Temperature circuit calibration out of range: Range Amp 2: 34.5 °C
E15
Temperature circuit calibration out of range: Range Amp 2: 44.6 °C
E16
Temperature circuit calibration out of range: Range Amp 3: 65.0 °C
Fisher Paykel Mr850 Service Manual
E20
Heater wire circuit has malfunctioned, heater can not be energized:
- Heater plate thermal cutout tripped (section 7.2.5)
- Heater wire fuse (F2) is open circuit (section 7.2.2)
- Heater wire triac, or heater wire relay is open circuit
E21
Heater wire circuit has malfunctioned, heater either can not be de-energized or
monitoring circuit has failed :
- Heater wire triac has shorted
- Heater wire sense circuit has failed
E23
Heater wire voltage measurement circuit faulty
E25
Transistor Q17 is not turning on
E26
Transistor Q16 is not turning on
E27
The heater wire relay is short circuited
E28
Mains voltage measurement is uncalibrated (section 8.1.3)
E29
The heater plate thermistor is short circuited
E2A
The heater plate thermistor is open circuit
E2C
Heater plate element circuit has malfunctioned is not turning on:
- Element is open circuit
- Heater plate triac or driver faulty
- Heater plate relay is faulty
E2D
The heater plate element is not turning off. Heater plate triac circuit faulty.
E30
Power (on/off) button stuck on
E31
Mute button stuck on
Fisher And Paykel Mr850 Technical Manual
E32
Mode button stuck on
E40
Unit not functional tested at time of manufacture