Caron 7000-75 - Manual (Page 32)

7000-50 & 7000-75 Series Operations Manual Rev A 1/6/2014 Page 32 of 71
Recorder Calibration:
If a calibration adjustment is required for a single pen recorder, use the left (#1) and
right (#2) arrow push buttons on the recorder to calibrate (or move) the pen’s position
on the chart to correspond to the temperature of the solution. The arrow buttons must
be held for approximately five seconds before the pen will begin to move.
For two pen recorders, you must first select the pen that you wish to calibrate. This is
done by pressing the left (#1) arrow button to select the red pen or the right (#2) arrow
button to select the blue pen. The arrow button must be held down until the green LED
light goes out. After the green LED light goes out, follow the instructions in step #3
above.
Battery Backup:
The green LED light remains a constant green color indicating that both the battery and
the main power to the unit are good. Refer to Figure 5 for the location of the green LED
indicating light. If the AC power were to fail or the battery becomes weak, then the
green LED light will begin "flashing" indicating that either you have lost the main power
to the unit or it is time to replace the battery. Having a 9 volt DC battery back-up in
place, will allow the recorder to continue to function normally for approximately 24
hours in the event of a power failure.