7–39
T-354
7.25.1
Replacing the Recorder
1. Turn power to the unit OFF.
2. Open the recorder door (see
3. Locate the connector below the recorder, and squeeze the ears together to disconnect the plug (item 6).
4. Remove the four mounting screws (item 8) and re move the recorder.
5. Install the new recorder by reversing the above steps.
7.25.2
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.
1. Lift the stylus (item 5,
) by grasping the arm near the base, and pulling the arm away from the
chart until it snaps into its retracted position.
2. Remove the chart retaining nut (item 10), remove the used chart, and record today's date on the old chart.
3. 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.
4. 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).
5. Mark today's date, container number, and other re quired information on the new chart and install under hold
down tabs.
6. Replace the chart nut loosely. Rotate the chart until the correct day is aligned with the "start arrow" and hand
tighten the chart nut.
7. Gently lower the stylus arm until the pen tip (item 4) comes in contact with the chart.
CAUTION
!
Do not allow the recorder stylus to snap back down. The stylus arm base is spring loaded, and
damage may occur to the chart, or the stylus force may be altered.
DO NOT move the stylus arm up and down on the chart face. This will result in damage to the
stylus motor gear.
7.25.3
Re-zeroing the Recording Thermometer
NOTE
Use chart CTD P/N 09-00128-00 (
F)
Use chart CTD P/N 09-00128-01 (
C)
1. Press the "Calibration" button (item 7,
) on the bottom of the recorder. The pen tip will drive fully
down scale, then move upscale to the chart ring at 0
degrees C (32
degrees F), and stop.
2. If the tip of the pen (item 4) is on the 0
C (32
F) chart ring the recorder is in calibration, proceed to step c. If
the tip of the pen is NOT on the 0
C (32
F) chart ring, the operator must loosen the two screws on the bot-
tom of the stylus arm to adjust the pen tip manually to the 0
C (32
F) chart ring. Tighten the screws when
adjustment is complete.
3. Press the calibration button and the pen will position itself to the correct temperature reading.
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