7–43
T-340
7.28.2
Recalibrating the Temp Recorder to Zero
For Electronic Partlow Recorder CTD part number 12-00464-xx,
Where xx= an odd number (example: 12-00464-03)
NOTE
Use chart CTD: part number 09-00128-00 (F), part number 09-00128-01 (C).
1. Press the “Calibration” button (see item 7,
) on the bottom of the recorder. The pen tip will drive
fully down scale, then move upscale to the chart ring at -29°C (-20°F), and stop.
2. If the tip of the pen (item 4) is on the -29°C (-20°F) chart ring, the recorder is in calibration, proceed to step
c. If the tip of the pen is NOT on the -29°C (-20°F) chart ring, the operator must loosen the two screws on
the bottom of the stylus arm to adjust the pen tip manually to the -29°C (-20°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.
For Electronic Partlow Recorder CTD part number 12-00464-xx
Where xx= an even number (example: 12-00464-08)
NOTE
Use chart CTD part number 09-00128-00 (F), part number 09-00128-01 (C).
4. Press the “Calibration” button (see item 7,
) on the bottom of the recorder. The pen tip will drive
fully down scale, then move upscale to the chart ring at 0C (32F), and stop.
5. 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.
6. Press the calibration button and the pen will position itself to the correct temperature reading.
7.29 Maintenance of Painted Surfaces
The refrigeration unit is protected by a special paint system against the corrosive atmosphere in which it normally
operates. However, should the paint system be damaged, the base metal can corrode. In order to protect the refrig
-
eration unit from the highly corrosive sea atmosphere, or if the protective paint system is scratched or damaged,
clean the area to bare metal using a wire brush, emery paper or equivalent cleaning method. Immediately following
cleaning, apply paint to the area, and allow to dry. Refer to the Parts List for proper paint selection.
7.30 Communications Interface Module Installation
Figure 7.27 Communications Interface Installation
Communications
Interface Module
CB1
