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6-23
T--317
Sensor (Typical)
Cable
Heat Shrink
Tubing
Large Heat Shrink
Tubing
REPLACEMENT 2 WIRE TO 2
WIRE OR 3 WIRE TO 3 WIRE
REPLACEMENT FOR DUAL SINGLE
SENSOR CONFIGURATION
RED
BLACK
RED/WHITE
Figure 6-24 Sensor and Cable Splice
6.23.3 Sensor Re--Installation
a. Sensors STS/SRS
To properly position a supply sensor, the sensor must be
fully inserted into the probe holder. This positioning will
give the sensor the optimum amount of exposure to the
supply air stream, and will allow the Controller to
operate correctly. Insufficient probe insertion into the
probe holder will result in poor temperature control due
to the lack of air flow over the sensor.
It is also necessary to ensure that the probe tip does not
contact the evaporator back panel. The design
minimum clearance of 6 mm (1/4 inch) should be
maintained (see Figure 6-25).
b. Sensor RTS/RRS
Reinstall the return sensor as shown in Figure 6-26. For
proper placement of the return sensor, be sure to
position the seal section of the sensor against the the
side of the mounting clamp.
c. Sensor DTS
The DTS sensor must have insulating material placed
completely over the sensor to insure the coil metal
temperature is sensed.
Cap and Grommet
Assembly
Probe
Holder
Supply Sensor
Sensor
Wires
Supply
Air
Stream
Evaporator
Back Panel
6 mm
(1/4 inch)
Figure 6-25 Supply Sensor Positioning
Evaporator Grille
Combination
Sensor (Mount
in Either Clamp)
Mounting
Clamp
Seal
Figure 6-26 Return Sensor Positioning
6.24 ELECTRONIC PARTLOW TEMPERATURE
RECORDER
The microprocessor based temperature recorder is
designed to interface with the DataCORDER to log
temperature with time. The electronic recorder will
automatically record the return air, supply air, or both,
based on the setting of temperature controller
configuration code CnF37, refer to Table 3-4. 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 P/N
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.