Teledyne LXT-280 - Manual (Page 47)

Dissolved Oxygen Transmitter Maintenance
Teledyne Analytical Instruments 37
Maintenance
6.1 Routine Maintenance
Aside from normal cleaning routine maintenance is limited to
recalibration. For recalibration, see Section 4 Calibration. However, if
service of the internal components is required always turn off the power
to the instrument.
6.1.1 Cleaning
Before cleaning, the integrity of the enclosure seals should be
inspected. Also check the conduit fittings and seals to make sure
moisture does not enter the enclosure while cleaning.
If the enclosure cover must be removed, it is wise to clean and
inspect the o-ring seal. If the seal is damaged, replace the o-ring. Always
keep the gasket lightly lubricated with a silicone grease.
6.1.2 Replacement of the Microprocessor:
For replacement of the microprocessor, contact the factory .
CAUTION: NEVER INTERCHANGE EPROMS FROM ONE
TRANSMITTER TO ANOTHER. DOING SO WILL
AFFECT TRANSMITTER PERFORMANCE.