MR850 Technical Manual * Revision J * Issued November 2005 * Ref. 185041340 (185041713 internal)
8
Expiratory Limb
The section of the breathing circuit that takes the expired gases from
the patient.
1.3 Definitions
NOTE: A NOTE provides important information or explanation of procedures or conditions which
may otherwise be misinterpreted or overlooked.
CAUTION:
A CAUTION statement designates the possibility of damage to this or other
equipment if a procedure is not followed exactly.
WARNING:
A WARNING statement refers to conditions with a possibility of personal injury if a
procedure is not followed exactly.
1.4 Product Application
The MR850 is a respiratory humidifier designed for use in hospital intensive care units. It is
used to provide optimum humidity to respiratory gases delivered to patients via endotracheal
tubes or face masks.
Refer to the Respiratory Humidification Product Catalogue or your local Fisher & Paykel
Healthcare representative for a list of approved accessories.
WARNING:
• 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 Invasive mode is set for patients that have bypassed airways.
• 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
securely mounted and 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.
• Ensure that both temperature probe sensors are correctly and securely fitted. Failure
to do so may result in gas temperatures in excess of 41 °C being delivered to the
patient.
• 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.
• Normal operation can not be guaranteed if powered from a source other than a pure
sine wave, such as a square wave inverter.