4
624074/07 4-1
Tests, calibrations and
utilities
4.1 Introduction 4-2
4.2 Pre-operational checks 4-3
4.2.1 Pre-operational check with heliox 4-6
4.3 System functions 4-8
4.3.1 Info: Viewing ventilator operating
hours, options, and versions 4-8
4.3.2 Tests & calib: Running sensor
calibrations and the tightness test 4-10
4.3.3 Sensors on/off: Enabling/disabling
SpO
2
, O
2
, and CO
2
monitoring 4-17
4.3.4 Setting day and night 4-19
4.3.5 Setting date and time 4-20
4.4 Alarm tests 4-20
4.4.1 High pressure 4-21
4.4.2 Low minute volume 4-21
4.4.3 Oxygen supply failed and low oxygen
alarms 4-21
4.4.4 Disconnection 4-22
4.4.5 Loss of mains power 4-22
4.4.6 Exhalation obstructed 4-22
4.4.7 Apnea 4-22