Carrier 69NT40-561-019, Operation And Service Manual

Page: 119 / 136

7–33 T-359
Sensor, CPDS
To replace the compressor discharge sensor (see Figure 7.19 ) do the following:
a. Ensure the unit is disconnected from the power source and that ST is in OFF position.
b. Remove the existing sensor. Clean all silicone sealer and dielectric compound from the sensor well. Ensure
well is clean and dry. Top of compressor, where the sensor seals, must also be clean and dry.
Figure 7.19 Compressor Discharge Temperature Sensor
c. Using the syringe supplied with the replacement sensor, squeeze all of the dielectric compound into the sen-
sor well.
d. Place a bead of the silicone sealer supplied with the replacement sensor around the sensor sealing ring.
Insert sensor into the well with the leads parallel to the suction fitting.
e. Reconnect sensor (see Figure 7.15 ) and run a PRE-TRIP DIAGNOSIS to test.
7.20 ELECTRONIC PARTLOW TEMPERATURE RECORDER (IF EQUIPPED)
The microprocessor-based temperature recorder is designed to interface with the DataCORDER to log tempera-
ture with time. The electronic recorder will automatically record the return air, supply air, or both, based on the set-
ting of temperature controller configuration code CnF37, refer to
Table 4–4 . The recorder reads and records data
from the controller in present time, under normal operating conditions.
If the power has been OFF for more than thirty days, the recorder will NOT re-synchronize (the chart will not
advance to present time), the pen tip will move to the currently recorded temperature, and the recorder will resume
normal temperature recording.
If using the Electronic Partlow Recorder CTD part number 12-00464-xx
Where xx= an even number (example: 12-00464-08)
The recorder will STOP when the power is OFF, and the pen tip will remain at the last recorded temperature on the
chart. When power is applied, and the power off period is less than thirty days, the recorder will retrieve the logged
data from the DataCORDER for the power off period and record it onto the chart. Thereafter, the recorder will
resume normal temperature recording.
If the optional DataCORDER battery pack is being used and the charge is too low to enable recording during the
power off period of less than thirty days, the pen tip will move to below the inner chart ring for the period when NO
data was recorded by the DataCORDER.
If the power has been OFF for more than thirty days, the recorder will NOT re-synchronize (the chart will not
advance to present time), the pen tip will move to the currently recorded temperature, and the recorder will resume
normal temperature recording.
SENSOR WELL
SENSOR
SILICONE BEAD