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O
PERATION
14
Setting the Safety Temperature
Follow these steps to set the water bath Safety tempera-
ture controller.
1.
Set the Temperature set point 2 to 5 degrees
higher than desired temperature. Wait until bath
temperature stabilizes as shown by displayed
actual temperature.
2.
Turn backup controller knob counterclockwise
until Alarm light just comes on. Turn the knob
clockwise slightly until the light goes off.
3.
Set the digital set point 5 degrees higher and
verify the Safety is controlling 2 to 5 degrees
above desired set point.
4.
Set the Temperature control down to desired
temperature, allow the temperature to drift
down, and verify the alarm light does not come
on. If the light does come on, go back to step 1
setting the Safety higher.
Calibrating the Unit
To check the accuracy of the unit, clip a certified ther-
mometer (not supplied with water bath), to the side of the
bath as described in the installation instructions. After
allowing sufficient time for the temperature to stabilize,
compare the thermometer reading to the actual tempera-
ture displayed on the unit. If the displayed temperature
does not agree with the thermometer, you can calibrate
the controller as follows:
1.
Note the difference between the displayed tem-
perature and the thermometer. For example: If
the displayed temperature is 37 and the ther-
mometer reads 36, the difference is -1, meaning
that the display should read 1 lower than it now
shows.
2.
Press Menu button until display shows CAL.
3.
Press and hold the Set button while simultane-
ously pressing the Increase or Decrease button
to set the desired temperature offset. Release
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