ResMed AutoSet CS 2 user manual Leak exceeds 30 L/min for more than 20 seconds

•INSUFFICIENT PRESSURE SUPPORT ALARM

Is triggered if for 3 breaths in a row the maximum mask pressure achieved at inspiratory to expiratory transition is either <87.5% of the absolute mask pressure targetted at that point, or < absolute mask pressure targetted minus 1 cmH2O, whichever is the lower.

•HIGH LEAK ALARM

Leak exceeds 30 L/min for more than 20 seconds.

•FLOW BLOCKED ALARM

Flow is less than 6 L/min for more than 20 seconds.

IEC 601-1CLASSIFICATIONS

Class II, Type CF

Class II medical electrical equipment provides protection against electric shock either by double insulation or reinforced insulation and does not require a protective earth.

Table 3: Displayed values

Value	Range	Accuracy	Display
			Resolution
Proximal cuff
Pressure	-3 to 40 cmH2O	0.5 cmH2O	0.1 cmH2O
Mass flow sensor
Leak	0–99 litres per	+/- 12 litres per	1 litre per breath
	minute	minute
Respiratory rate	8–30 breaths per	+/- 10%	1 breath per
	minute		minute
Tidal volume	0–4500 millilitres	+/- 10%	1 millilitre
Minute ventilation	0–40 litres per	+/- 10%	0.1 litres per
	minute		minute
Target MV	0–40 litres per	+/- 10%	0.1 litres per
	minute		minute

Table 4: Maximum low impedance flow at stated pressures

Pressure	Flow (L/min)
(cmH2O)

4.2217

8.6218

13.0219

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