8
2.5. Operating, Transport and Storage Environment
Operating
Transport
Storage
Temperature
18- 26°C(64.4-78.8°F)
-10- 50°C (14-122°F)
-10- 50°C (14-122°F)
Relative humidity
30
％
-75
％
30
％
-95
％
30
％
-95
％
Atmospheric
pressure
70kPa-106kPa
50kPa-106kPa
50kPa-106kPa
Altitude
0-3000m(9000ft)
0-3000m(9000ft)
0-3000m(9000ft)
2.6. Standards Compliance
Safety requirements of IEC60601-1, IEC60601-1-2
Design requirement of ISO8185
Electric Shock Protection: Class I
Applied Part type BF
Water proof and Drip proof: IPX1
3. Explanation of Controls and Indicators
3.1. Humidifier Operation
This unit is designed to add heat and moisture to respiratory gases. The gas is passed through a
humidification chamber where it is warmed and humidified.
This unit has two heating systems. The first is a heater plate, which heats the water contained in the
humidification chamber, humidifying the air passing through it. The humidifier monitors the temperature of
the gas at the chamber outlet with the chamber probe, and controls the amount of power delivered to the
heater plate, in order to maintain the chamber set point.
Under normal conditions the gas is heated to 37 °C in the invasive mode, 31 °C for the noninvasive mode.
3.2. Power on Self-check
The purpose to internal inspection when turn on the unit.
Program of Power on Self-check:
1. Check the heater wire fuse is well.
2. Check the heater plate over heat.
3. Check the heater plate temperature probe open or short.
4. Check the heater wire adapter open or short.
5. Check the airway temperature probe open or short.
6. Check the chamber temperature probe open or short.
7. Check the heater wire open or short.
Visual / Audio Test Sequence
：
The LED will light up and the 15-segment display will flash and the buzzer will be given Be-Be When the
power switch is on.
