User Manual

Table Of Contents
72MonitoringCO2(LoFloOption) ExpressionMR400In structions forUse
Operation and Use
Whenmonitoringanestheticagentgases,thetypicaloperationsandpossibleconditionsthatcan
arisemayresultinpotentialmessagesrequiringyourattention.Seepage426foramessage
listingandsuggestedactions.
Warm-Up Period
Inordertoachieveaccurateidentificationsandmeasurements,theLoFlosystemrequiresa
warmupperiodtothermallystabilize.ThiswarmupperiodbeginswhentheCO2parameteris
activated.Uponactivation,CO2WarmingUpwillbedisplayeduntiltheLoFlosystembecomes
fullyoperational(about2minutes).
Zero Reference Adjustment
WARNING
During Zero calibration the system pulls ambient air through the zero intake port on the
cart The calibration system assumes that the ambient air will contain normal trace amounts
of CO2. If the system is placed in an unventilated area that allows CO2 (from the waste gas
port on the rear panel, if not connected to a gas scavenging system) to accumulate, the result
could be inaccurate CO2 zeroing and resulting inaccurate patient readings. Always place the
cart in a well ventilated area.
TheLoFlosystemwilloccasionall yperformazeroreferenceadjustment(ZeroCa l )toensurethe
accuracyofthe displayedgasconcentrations.PerformingCO2Zerowillbedisplayedduringazero
referenceadjustment;allowtheprocesstocomplete.Thema ximumtimerequiredforcalibrationis
approximately40seconds.ZeroCal
isnotrequiredwhenswitchingsamplinglines.
Undercertainconditions,ZeroCalwi llnot beallowed:
•Iflessthan20secondshavepassedsincedetectionofthelastbreath;
•IftheCO2temperatureisunstable;or
•IfthesamplinglineisdisconnectedfromtheCO2port.
Toperformamanualzeroreferenceadjustment
Step Action
1
IfCO2WarmingUpisdisplayed,waitasthesystemthermally
stabilizes.Whenthemessageiscleared,proceed.