Henny Penny HHC-980 Technical Manual page 24

3-3. HUMIDITY SENSOR
CALIBRATION AND
REPLACEMENT
(Continued)
Figure 3-3
Figure 3-4
3-2
4. Pull the sensor assembly from the box and disconnect the
wires. Figure 3-3.
5. Connect wires of new sensor and attach the sensor to the
box. Follow the calibration instructions below before re-
attaching the sensor cover.
6. Once the calibration is complete, slide the cover over the
Phillip's head screws and tighten. Unit is now ready for
use.
Calibration:
Calibrate the humidity sensor after a sensor or control replace-
ment. A calibration board is supplied with each control kit and
humidity sensor kit, but can also be ordered separately with
part number, 14391.
1. If not already done, open the cabinet door, and remove the
humidity sensor cover at top of unit. (See step 2, page 3-1.)
2. While holding the white tube, unscrew the silver cap from
the humidity sensor.
3. Remove the two pronged sensor by grasping the edges.
Figure 3-4.
Use caution not to touch the flat edge, as it will throw the
reading off.
4. Push and hold until "Level 2" appears in display.
5. Press to step through the menu until "TECH' is
displayed.
Model HHC-980/983
904