Shellab SWB30-2 - Manual (Page 10)

6
10 Microprocessor Control Water Baths
chamber temperature has been stable at the set point for several hours.
1. Place a calibrated reference thermometer in the bath (a thermometer clip is provided with the
accessories package). (See Figure 2 for placement.) Allow the thermometer to reach temperature and
remain stable for one (1) hour.
2. Compare the reading on the reference thermometer with the temperature control display. If there is a
difference, put the display into calibrate mode by pressing both the Up and Down arrow pads at the
same time until the two (2) outside decimal points begin to blink.
3. When the decimal points are blinking, press the Up or Down arrow pad to adjust the display to match
the reference thermometer. If the arrow pads are not pressed within five (5) seconds the display will
revert to showing the temperature within the bath.
4. Allow the unit to stabilize again, and repeat calibration if necessary.
Setting the Over Temperature Limit Thermostat
To set the Over Temperature Thermostat, perform the following steps:
1. Verify that the Thermostat was set to its maximum position to allow the water bath to stabilize.
2. Turn the Thermostat counterclockwise until the Safety indicator light turns on.
3. Turn the Thermostat clockwise until the Safety indicator light turns off.
4. Turn the thermostat clockwise again , 1/16” past the point where the indicator light went out. This will
set the Thermostat at approximately 1

C above the Main Temperature set point.
Figure 2. Thermometer Placement
9850563
Note: Water bath thermometer must be placed so that the bulb is always fully immersed. The thermometer
must not touch the sides or the bottom of the bath tank.
Remarque : L'élément chauffant du bain n'est pas en contact avec le fond de la cuve et est protégé dans
le cas où la cuve s'assèche. Cependant, il vaut mieux éviter que cela se produise car le
chauffage à sec impose de fortes contraintes aux parois.