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Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001
1.0 MR700 SERIES GENERAL SPECIFICATIONS_________________________
This documentation defines the technical specifications of the MR730, MR720, MR700 and MR480 respiratory
humidifiers, it also includes maintenance and repair procedures.
The MR730/720 models are Heated Wire humidifiers with the option of disabling the Heater Wire.
The MR720 has a lower alarm limit and an extended warmup mode for use in Anaesthesia.
The MR700 model is exclusively a Heated Wire humidifier.
The MR480 model is a non Heated Wire humidifier.
1.1 ELECTRICAL SPECIFICATIONS
1.1.1 MODELS MR730/720/700
Supply Voltage 230 ± 25 V
127 ± 12 V
115 V
100 ± 10 V
Supply Frequency 50 or 60 Hz
Supply Current 1.0 A maximum at 230 V
1.9 A maximum at 127 V
2.0 A maximum at 115 V
2.4 A maximum at 100 V
Heater Wire Capacity 60 W
1.1.2 MODEL MR480
Supply Voltage: 230 ± 25 V
115 V
100 ±10 V
Supply Frequency 50 or 60 Hz
Supply Current 0.7 A maximum at 230 V
1.4 A maximum at 115 V
1.6 A maximum at 100 V
1.1.3 COMMON ELECTRICAL SPECIFICATIONS (ALL MODELS)
Heaterplate Power 150 W
Heaterplate Overheat Protector Operates at 118 ± 6 °C
1.2 STANDARDS AND APPROVALS
Classification under: CSA-C22.2 No.125 , UL2601
IEC601-1, AS3200.1, EN60601-1
Class 1
Type B
Drip Proof
Continuous Operation
Not to be used in the presence of flammable anaesthetics.
1.3 TEMPERATURE CONTROL
PID (Proportional Integral Derivative) control of Heater Wire (in Heated Wire mode operation only) and heaterplate.
1.4 TEMPERATURE SENSING
Temperature measurement using standard characteristic thermistors (YSI 400 compatible) mounted in fast response
temperature probes, located at the patient end of the delivery tube and at the humidifying chamber outlet.