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OXYGEN DEFICIENCY MONITOR PAGE 8
7. Sensor Replacement
7.1 Sensors for the Model 55 are provided in a sealed bag to prevent
depletion of the electrolyte prior to required use. Sensor
depletion begins when the bad seal is broken.
7.2 Remove the four screws from the rear of the monitor and open
the case.
7.3 Remove the sensor from the clamp in the back panel and unplug
it from the printed circuit board.
7.4 Insert the new sensor into the clamp. The sensor should be
oriented as indicated in Figure 2 and the tip of the sensor must
rest inside the hole in the center. Plug the connector into the
printed circuit board.
7.5 Replace the back cover and install the four screws. Turn the
monitor “ON”, wait ten minutes and recalibrate.