Cannon Instrument CT-600 (Contant Temperature Bath) - Manual (Page 16)

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CANNON CANNON CANNON CANNON CANNON ® CT-500/600 Series II CONSTANT TEMPERATURE BATH
Version 3..3—March, 2012; CANNON CANNON CANNON CANNON CANNON ® Instrument Company
2139 High Tech Road • State College, PA • 16803 • USA
Turning on the CT-500
NOTE Temperature Adjust (TA) dials on the CT-500 are equipped with locks to
prevent accidental changing of dial settings. Push the lock up to release
the dial. When the dial has been set to the proper position, push the lock
down to re-lock the dial.
1. Verify that the CT-500 has been assembled and installed correctly
(Chapter 2, Unpacking and Assembly).
2. Turn the bath Power switch on. Remember that the bath heaters will
not be activated if there is insufficient liquid in the bath.
NOTE Initially the Limit Control (LC - TEMPERATURE ADJUST) dial must be
turned completely clockwise to enable the bath to heat properly. After the
bath reaches operating temperature, this dial should be reset to prevent
the bath from overheating (see page 11).
3. Move the TA - SELECT switch to the left (fixed) position.
4. Release the dial lock on the TA - FIXED dial and reset it to 5.
5. Re-lock the dial.
Setting the temperature
Do not touch hot surfaces of the CT-500 bath when operating the equip-
ment at high temperatures or burns may result.
There are two ways to set the CT-500 bath temperature. The procedure
depends upon whether or not the desired temperature is on the
T - SELECT dial.
Pre-set temperature selection
To set the CT-500 to a preset temperature:
1. Turn the T - SELECT dial to the appropriate temperature. If the
temperature is above the current bath temperature, the CT-500 will
begin heating and the HEAT LED (Light-Emitting Diode) will light.
2. Make sure the TA - SELECT switch is set to the left (FIXED)
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
switch ON to maintain temperature control. When the PH switch has been
turned on, the PH - HEAT LED will light.
3. As the bath temperature approaches the selected T -SELECT
setting, the LED above the TA controls will start to blink as the
heater duty cycle is automatically adjusted to stabilize temperature.