Carrier 69NT40-541-001, Operation And Service

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7–37 T-316
Figure 7.29 Electronic Partlow Temperature Recorder
1. Recorder Door
2. Change Chart Button
3. Recorder Box
4. Pen Tip
5. Stylus Arm 6. Connector
7. Calibration Button (located underneath)
8. Mounting Screw #10-24 x 7/16 Inches Long
9. Hold Down Tab
10. Chart Retaining Nut
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7.23.1 Replacing the Recorder
a. Turn power to the unit OFF.
b. Open the recorder door (item 1, Figure 7.29 ).
c. Locate the connector below the recorder, and squeeze the ears together to disconnect the plug, (item 6).
d. Remove the four mounting screws (item 8), and remove the recorder.
e. Install the new recorder by reversing the above steps.
7.23.2 Changing the Chart
NOTE
To prevent recorder corrosion, it is important to assure the door is securely closed at all times after
completing the chart change.
a. Lift the stylus (item 5, Figure 7.29 ) by grasping the arm near the base, and pull the arm away from the chart
until it snaps into its retracted position.
b. Remove the chart retaining nut (item 10), remove the used chart, and record today's date on the old chart.
c. Press the “Change Chart” button (item 2).
NOTE
Failure to press the change chart button, when changing a chart with the power OFF, may result in the
chart advancing when power is applied.
d. Install a new chart, make sure the chart center hole is placed over the center hub, and the chart edges are
behind the four hold down tabs (item 9).
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