Portable Oxygen Analyzer | Service Manual |
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Service Manual
3.1 General Service Information
The Teledyne Model AX300-I portable oxygen analyzer is designed to be robust yet compact in size. In order to achieve maximum reliability in a microprocessor-based instrument, a single PC board is used which relies exclusively on surface mount technology. Without access to specialized probes and test equipment, troubleshooting and repair of circuit board components are not feasible. A factory replacement of the entire PC board is more cost effective than a field repair of an individual component.
With the exception of replacing the sensor or batteries there are no user- serviceable components inside the unit. There are no potentiometers or other adjustments to be made within this instrument. If a problem arises with either of these models that cannot be corrected by recalibration, changing the batteries or replacing the sensor as described in this manual, the unit must be sent back to the factory for repair or replacement. See Section 3.10 for instructions on obtaining a Return Merchandise Authorization (RMA) number before sending a unit back to Teledyne for repair.
3.2 Overall Maintenance
The AX300-I instrument requires very little maintenance, other than calibration, checking and changing the batteries and sensor, and cleaning the plastic housing. Occasional cleaning of the plastic surface can be done with isopropyl alcohol. Should any part of the instrument malfunction or fail to perform, the unit should be removed from service. There are no user-serviceable components within the instrument.
3.3 Battery Maintenance
DO: Test batteries regularly. (replace immediately when all 5 bars are missing).
DO: Always use alkaline batteries.
DO: Recalibrate after replacing batteries.
The AX300-I instrument incorporates a bar graph that continuously displays the approximate amount of useful life remaining on the set of installed batteries.
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