Teledyne MX300-I manual Troubleshooting

Page 37

Portable Oxygen Monitor

Service Manual

 

 

 

investigation should be made until the discrepancy in readings is resolved. The troubleshooting section of this manual may provide additional assistance in locating the problem.

Note: The MSDS on this material is located in the Appendix. It is also available upon request through the Teledyne Environmental, Health and Safety Coordinator. Contact at

(626)934-1592

3.8Troubleshooting

The MX300-I oxygen monitor provides a variety of built-in safety features that prevents its use when a fault is detected. When a unit displays the message √ SENSOR and sounds the audible and visual alarm continuously, it is an indication of a faulty connection between the sensor and the unit or an expired or faulty sensor. To determine where the difficulty lies, refer to the following guidelines in Table 3-1.

Table 3-1 Troubleshooting

Symptom

Why

What To Do

New sensor responds

If the sensor is new

A) Wait 1–2 hours and

slow or drifts.

and was just

recalibrate.

 

removed from its

 

 

sealed bag it may

 

 

need to run for

 

 

several hours.

 

Sensor will not read

Calibration in 100%

A) Recalibrate using dry gas

below 22 % after

was invalid or the

making sure the reading

calibration in 100% O2.

room air is

stabilizes before making

 

contaminated with

any adjustments.

 

excess oxygen.

B) Make sure that at least 6"

 

 

 

 

(30 cm.) of tubing is

 

 

attached to the exhaust

 

 

side of the tee adapter to

 

 

prevent back filling. O2 flow

 

 

rate should not exceed 5

 

 

l/min.

 

 

C) Oxygen concentration at the

 

 

sensor is significantly higher

 

 

than 21%. Take the

 

 

instrument to a well-

 

 

ventilated area and check

Teledyne Analytical Instruments

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Contents MX300-I MX300-I About This Manual How To Use This ManualSafety Messages Table of Contents Appendix MX300-I Front View List of FiguresList of Tables MX300-I Front View IntroductionIntroduction MX300-I Applicable StandardsOptions FeaturesTheory of Operation ApplicationsSensor Signal ProcessingIntroduction MX300-I Operation SetupInstalling the R17MED Sensor Sensor Installation or ReplacementSensor Cable Connection to Monitor Mounting V-Mount Adapter InstallationInstalling Batteries Battery InstallationCalibration Sequence CalibrationPortable Oxygen Monitor Operation Setting the Alarms AlarmsOutput 0-1 VDC or RS232 0-1 VDC or RS 232 Digital Output Port Use ProcedureHumidity Gas SamplingPressure TemperatureAnesthetic Gases Discrepancy in ReadingsOxygen Reading Error in a Mixture of Anesthetic Gas Do’s and Don’ts CleaningPortable Oxygen Monitor Operation Operation MX300-I Overall Maintenance General Service InformationBattery Maintenance Calibration Sensor MaintenanceAlarms Pressure Troubleshooting Troubleshooting√ Sensor Ventilate the patient, water Watchdog Error CodesOther Problems with the Instrument Return Authorization for Service Appendix SpecificationsOptional Accessories Spare Parts ListOrders should be sent to Blank Crossover IndexIndex MX300-I