Teledyne 316RA / RB / RAD / RBD - Oxygen analyzers User Manual

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TELEDYNE ANALYTICAL INSTRUMENTS

Model 316RA/RB/RAD/RBD Trace Oxygen Analyzer

Maintenance

Replacing the Fuse

If the unit will not turn on when plugged in and switched ON (via the

power switch), check the fuse:

1. Remove AC power and move the power switch to OFF.

2. Press the front panel fuse receptacle and remove.

3. Slide the fuse out and replace it with a ½A fuse (for 220V use

¼A).

4. Replace the fuse receptacle.

Replacing the Sensor

The characteristics of the Micro-Fuel Cell are similar to those of a

mercury battery. Both provide an almost constant output through their
useful life, and then fall off sharply towards zero at the end. Cell failure
may show by the inability to properly calibrate the analyzer when using
span gas. Very little adjustment of the 10-turn SPAN potentiometer will be
required to calibrate the analyzer during the duration of a given cell’s
useful life. If many turn adjustments clockwise are required to calibrate the
instrument, or calibration cannot be achieved within the range of the
control, replace the Micro-Fuel Cell.

The cell is located behind the hinged front panel inside the cell block

assembly. To replace the cell:

1. Move the range selector switch to CAL. Make sure the power

switch is ON.

2. Make sure sample is flowing through the analyzer. Shut off the

flow and remove the old cell by unscrewing counter-clockwise
the plug at the bottom of the cell block (the cell will drop out
when the plug is removed).