fisher--paykel mr850 User Manual

Dimensions: 

140 mm x 173 mm x 135 mm (without chamber fitted) 

Weight: 

2.8 kg (no chamber fitted), 3.1 kg (chamber fitted and filled with water)

 

Supply Frequency: 

50/60 Hz  Supply Voltage:  115 V~ 

Supply Current:  2.0 A max at 115 V~ 

Heater Plate: 

150 W 

Heater Wire: 

22 V~, 2.73 A, 60 W, 50/60 Hz 

Heater Plate Over-temperature Cutout:  118 ± 6 °C

 

Temperature Control Settings 
Invasive Mode: 

Chamber outlet: 35.5 - 37 °C, Airway 35 - 40 °C 

Noninvasive Mode:  

Chamber outlet: 31 °C, Airway 28 - 34 °C  

Display: 

Three digit 14 mm 7 segment LED 

Range: 

10 - 70 °C, Accuracy: ± 0.3 °C (in 25 - 45 °C temperature range)

 

Alarm Parameters  
High Humidity Alarm:  An immediate, audible alarm at a displayed temperature of 41 °C or if the  

airway temperature exceeds 43 °C 

Low Humidity Alarm: 

An audible alarm between 10 minutes @ 29.5 °C, and 60 minutes @ 34.5 °C 
(Invasive Mode only) 

 

Sound Pressure Level:  Alarms exceed 50 dBA @ 1 m

Performance  
Recommended ambient temperature range:  18 - 26 °C  
CAUTION:  If operating in ambient temperatures outside the recommended range, consult your local 
Fisher & Paykel Healthcare representative. 
Recommended Flow Range:   Invasive Mode: up to 60 L/min, Noninvasive Mode: up to 120 L/min 
 

Refer to breathing circuit specifications for minimum flow 

Humidity Performance: 

Invasive Mode: > 33 mg/L, Noninvasive Mode: >10 mg/L  

Maximum Operating Pressure:   Refer to chamber and breathing circuit specifications 
Warm-up time:   

Less than 30 minutes 

       

        

Type BF 

ATTENTION 

Consult 

accompanying 

documents 

Alternating 

Current 

Drip 

Proof 

CAUTION 

Hot surfaces 

may exceed  

85 °C 

Respiratory Humidifier Classified by 

Underwriters Laboratories Inc. with respect to 

electric shock, fire and mechanical hazards 

only in accordance with UL 60601-1 and 

CAN/CSA C22.2 No. 601.1  84DJ 

MR850 Heaterbase  Using a damp cloth, clean the humidifier with either of the following:  Isopropyl Alcohol, normal dishwashing detergent.  Temperature 

Probe  Always clean before use.  Probes can be cleaned with one of the following solutions: Sporicidin

TM

, Cidex

TM

 OPA, Sporox

TM

  OR  sterilize the probe using Ethylene Oxide 

sterilization at 55 °C (131 °F), 80 kPa, (allow at least 15 hours for residual ETO to disperse before use).  Wipe the airway temperature probes clear of any cleaning residues 
before use.  Store probes in clean conditions.  DO NOT autoclave probes. 
CAUTION:  DO NOT immerse the heaterbase or temperature probe electrical connections in any liquid. 

 

NOTE: Follow the cleaning agent manufacturers’ instructions carefully. It is the user’s responsibility to qualify any deviations from these procedures, both for disinfecting 
efficacy and physical effect on the probe and the heaterbase. See the MR850 technical manual for more detailed instructions on cleaning. 

WARNING 

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. 
Ensure that both temperature probe sensors 
are correctly and securely fitted. Failure to 
do so may result in temperatures in excess 
of 41 °C being delivered to the patient. 
Ensure maintenance of grounding integrity 
by connection to a "hospital grade" 
receptacle. Always disconnect supply before 
servicing. 
When mounting a humidifier adjacent to a 
patient ensure that the humidifier is always 
positioned lower than the patient. 
The operation of high frequency surgical 
apparatus, shortwave or microwave 
equipment in the vicinity of the humidifier 
may adversely affect its function. If this 
occurs, the humidifier should be removed 
from the vicinity of such devices. 
Do not touch the glass tip of the chamber 
temperature probe during use. Keep black 
connectors dry at all times. 
Visually inspect accessories for 
damage before use. 

Patents Pending in Principal Countries 

of the World 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

REF 185042343  

Rev G 2004-02 

 

The MR850 respiratory 
humidifier is used to 
warm and humidify 
gases delivered to 
patients requiring 
mechanical ventilation, 
positive pressure 
breathing assistance,  
or other medical gases.

 

INTERNATIONAL P O Box 14 348, Panmure, Auckland 1134, New Zealand  Tel:+64 9 574 0100 Fax:+64 9 574 0158 Email: info@fphcare.com Web Site: www.fphcare.com 
USA Tel: 1800 446 3908 or +1 949 470 3900 Fax:+1 949 470 3933