Fisher & Paykel MR850 User Manual

SPECIFICATIONS

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

Low Humidity Alarm: An audible alarm between 10 minutes @ 29.5 °C, and 60 minutes @ 34.5 °C

Sound Pressure Level: Alarms exceed 50 dBA @ 1 m
Performance

Recommended ambient temperature range: 18 - 26 °C

CAUTION:

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

If operating in ambient temperatures outside the recommended range, consult your local

airway temperature exceeds 43 °C

(Invasive Mode only)

Symbol Definitions

Type BF ATTENTION

CLEANING

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

Consult

accompanying

documents

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

DO NOT immerse the heaterbase or temperature probe electrical connections in any liquid.

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

TM

, CidexTM OPA, SporoxTM OR sterilize the probe using Ethylene Oxide

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

INSTRUCTION SHEET

DO NOT DISCARD

REF 185042343

Rev G 2004-02

MR850 RESPIRATORY HUMIDIFIER

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:[phone] Fax:[phone] Email: [e-mail] Web Site: www.fphcare.com
USA Tel: [phone] or [phone] Fax:[phone]

p

A

SET UP

Slide humidification chamber (A) onto humidifier base and connect breathing circuit (B) (refer to humidification chamber and breathing

1.

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.

2.

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

3.

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 base until an audible click is heard.

4.

Connect the other end(s) of the heater wire adaptor to the breathing circuit socket(s) (G) and (H).

5.

The humidification system is now set up and ready for use. After power on, the humidifier will default to invasive mode.

6.

H

ATTENTION: Refer to operating instructions which accompany each accessory.

G

B

D

F

C

THE FOLLOWING

ACCESSORIES ARE

• Humidification Chamber

• Breathing Circuit

• Temperature Probe

E

• Heater Wire Adaptor

• Mounting Bracket

REQUIRED:

(e.g: MR290)

(e.g: RT110)

(e.g: 900MR869)

(e.g: 900MR800)

(to suit ventilator)

Choice will depend

upon application.

Please contact your local

Fisher & Paykel Healthcare

representative for

recommendations.

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
tem

erature decreases to within normal limits.

MODE BUTTON

This button switches between invasive and
noninvasive mode.

Under cold or drafty conditions the chamber
temperature may drop as low as

35.5 °C in order to maintain a dry breathing
circuit.

WARNING: Ensure that invasive mode is
set for patients that have bypassed airways

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.

Noninvasive Mode
This mode is for patients receiving
face mask or headbox therapy,
and delivers a comfortable level of
humidity.

ON/OFF BUTTON

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)