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Maintenance 3000ZA-3X
Teledyne Analytical Instruments 46
2. Open the front panel door by pressing the release button on
the top right corner of the door all the way in with a narrow
gauge tool.
3. Remove the eight screws that hold the cover of the sensor
block. As you remove the cover make sure the O-rings stay
in place. If they drop, place them back carefully in the groove
found on the cell block, not on the cover. See Figure 5.1.
4. You can remove the sensor that you want to replace with
your fingers or using small pliers. Just pull the sensor straight
out.
CAUTION: SENSORS MIGHT BE HOT! AFTER REMOVING
POWER. LET THE SENSORS COOL FOR A FEW
MINUTES.
5. Install the new sensors paying attention to relative position in
the sensor block. Note orientation of sensor tab aligning with
tab location on the silkscreen of the mounting PCB. Sensor is
held by friction of the pins sockets. The locations of the
Sensors are:
On the left side P/N S1439 (0-200 ppm range )
On the center P/N S1492 (0 – 2 % range )
On the right side P/N S1442 (0 – 95 % range )
CAUTION: MAKE SURE OF THE CORRECT POSITION OF EACH
SENSOR. DO NOT PLACE A SENSOR IN THE
WRONG SOCKET OR THE ANALYZER WILL FAIL!