Cannon Instrument CT-600 (Contant Temperature Bath) - Manual (Page 17)

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CANNON CANNON CANNON CANNON CANNON ® CT-500/600 Series II CONSTANT TEMPERATURE BATH
Version 3..2—March, 2007; CANNON CANNON CANNON CANNON CANNON ® Instrument Company
2139 High Tech Road • State College, PA • 16803 • USA
NOTE If the auxiliary heater was engaged, the PREHEAT light will also blink.
Make sure to turn off the PREHEAT switch if operating at temperatures
below 80°C.
4. Insert the appropriate thermometer for the test temperature (see
APPENDIX C for thermometry information).
5. To adjust the bath temperature to the exact temperature desired, first
unlock the TA - FIXED dial.
6. Read the thermometer to determine the actual temperature of the
bath. Make sure that both the bath temperature and thermometer
have stabilized before taking a reading.
7. Turn the TA - FIXED dial to adjust the temperature. After each
adjustment, allow several minutes for the bath temperature to
stabilize.
8. Turn the dial clockwise to increase the bath temperature or turn the
dial counterclockwise to decrease the bath temperature.
9. When the desired temperature has been reached, re-lock the TA -
FIXED dial.
10. After the bath has reached the desired temperature, set the HIGH
TEMPERATURE LIMIT CONTROL (LC). This will prevent the
bath from overheating if a malfunction occurs.
Adjusting the High Temperature Limit Control
NOTE During this procedure, the temperature of the bath may change slightly,
but will quickly recover.
1. Using a screwdriver, slowly turn the LC - TEMPERATURE
ADJUST control counterclockwise until the OVER TEMP message
lights up on the LC - PUSH TO RESET button.
2. Turn the control clockwise approximately ¼ to ½ turn.
3. Push the LC - PUSH TO RESET button. If the bath doesn't recover,
repeat step 2 and try again.
Custom temperature selection
To set the CT-500 to a temperature not indicated on the T-SELECT dial:
1. Turn the T - SELECT dial to the temperature closest to your desired
temperature. If the temperature is above the current bath tempera-
ture, the CT-500 will begin heating and the HEAT LED (Light-
Emitting Diode) will light.
2. Move the TA - SELECT switch to the right (the VARIABLE
position).
NOTE To heat the bath more rapidly, turn on the PREHEAT (PH) switch. If the
target temperature is below 80°C, turn the PH switch off when the desired
temperature is reached. For temperatures above 80°C, keep the PH