Removal and replacement procedures 48
HP highly recommends replacing sensor internal components before replacing the entire sensor. For more
information, see replacing the entire sensor ("
Replacing the temperature sensor in the chilled water system
You need a wrench and a screwdriver to remove and replace the sensor.
Removing temperature sensor from the chilled water system
1.
Identify the location of the sensor to be replaced and remove enough header insulation to uncover the
sensor.
2.
Remove the sensor cover.
3.
Label and disconnect the sensor wiring.
4.
Rotate the immersion sleeve counterclockwise (1) and pull forward to remove the entire sensor from the
chilled water header (2).
Replacing the temperature sensor in the chilled water system
1.
Insert the new sensor probe into the chilled water header (1).
2.
Rotate the immersion sleeve clockwise to secure the sensor onto the header (2).
