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Philips Expression MR400 Instructions For Use Manual Page 158

Mri patient monitoring system.
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Message, Location,
Indication
CO2 Low Flow
CO2 alarm flag area, blue
alarm light, INOP alarm tone
Check for CO2 Occlusion
CO2 alarm flag area, blue
alarm light, INOP alarm tone
CO2 Out Of Range
CO2 alarm flag area, blue
alarm light, INOP alarm tone
CO2 Sensor Faulty
CO2 alarm flag area, blue
alarm light, INOP alarm tone
CO2 Sensor Over Temp
CO2 alarm flag area, blue
alarm light, INOP alarm tone
CO2 Warming Up
CO2 alarm flag area, blue
alarm light, INOP alarm tone
CO2 Zero Required
CO2 alarm flag area, blue
alarm light, INOP alarm tone
Magnetic Field Too High
CO2 alarm flag area, blue
alarm light, INOP alarm tone
HW Fail
CO2 alarm flag area, blue
alarm light, INOP alarm tone
Low O2
AGENT alarm flag area, blue
alarm light, INOP alarm tone
Motor Speed Error
CO2 alarm flag area, blue
alarm light, INOP alarm
tone
4‐34  Alarms                                                                                                                                     Expression MR400 Instructions for Use
What to Do
Message may appear when the sampling line is initially connected; allow the a few seconds for the
flow to be established. Otherwise, the detected flow rate is 10 percent less than nominal; in this
case, check the sampling line for pinches or obstructions then clear any pinch or replace if
necessary.
If the message persists, contact technical support or authorized service personnel.
Detected flow through the sampling line is less than 40 ml/min or the water trap may be full of
fluid:
Check the sampling line for obstructions and replace it if necessary.
Check the fluid level in the water trap and replace it if necessary.
If the message persists, contact technical support or authorized service personnel.
The calculation value is greater than the upper CO2 limit. Perform readings to confirm patient's
physiological condition.
If the message persists, contact technical support or authorized service personnel.
CO2 bench detected a hardware or sensor error. Cycle AC mains power.
If the message persists, contact technical support or authorized service personnel.
The CO2 sensor is above the specified operating temperature. Confirm that the MR400 is
operating within the required environmental conditions (see Appendix A); if outside the specified
range, move the MR400 to an area that is within limits.
If the problem persists, stop all monitoring activities and contact technical support or authorized
service personnel.
CO2 is warming to operating temperature. Allow the process to complete, about 2 minutes.
Zero calibration of the CO2 module is needed; see page 7-15 for details.
The gauss limit has been exceeded, and the AGENT option can no longer function. Position the
MR400 per the product labeling; see page 3-2.
CO2 module was not found during initialization. Cycle AC mains power.
If the message persists, contact technical support or authorized service personnel.
The inspired O2 value has dropped below 18.0
The MR400 is too close to the MR magnet.
Ensure that the MR400 has been positioned correctly; see page 3-2. If the message persists, contact
technical support or authorized service personnel.

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