Chemglass CG-1972-65 - Manual (Page 18)

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3.10 Resetting the Controller for Use With Heating Mantles.
If you want to use your controller with heating mantles after it’s been tuned for a different style heater,
rather than autotuning the controller with the heating mantle, J-KEM recommends that the controller be
manually tuned by following the procedure below.
Procedure 1
. Perform when using heating mantles with round bottom flasks.
[This procedure takes about 2 minutes to perform]
1. Press and hold in both the ▼ and ▲ keys on the front of the temperature meter until the word “tunE” appears in the display, then release
both keys.
2. Press the ▲ key once and the word “bAnd” will appear in the display.
First hold in the ‘*’ key, then while holding in the ‘*’ key press the ▼ or ▲ key until the value “10” appears in the display, then let go of
all the keys.
3. Press the ▲ key once and the word “int.t” will appear in the display.
First hold in the ‘*’ key, then while holding in the ‘*’ key press the ▼ or ▲ key until the value “10” appears in the display, then let go of
all the keys.
4. Press the ▲ key once and the word “dEr.t” will appear in the display.
First hold in the ‘*’ key, then while holding in the ‘*’ key press the ▼ or ▲ key until the value “50” appears in the display, then let go of
all the keys.
5. Press the ▲ key once and the word “dAC” will appear in the display.
First hold in the ‘*’ key, then while holding in the ‘*’ key press the ▼ or ▲ key until the value “3.0” appears in the display, then let go of
all the keys.
6. Press the ▲ key once and the word “CyC.t” will appear in the display.
First hold in the ‘*’ key, then while holding in the ‘*’ key press the ▼ or ▲ key until the value “30” appears in the display, then let go of
all the keys.
7. Press and hold in both the ▼ and ▲ keys until the temperature appears in the display, then release both keys.
3.11
Changing the Temperature Display Resolution The controller is programmed to display temperature
with 0.1
o
C resolution. The controller can also display 1
o
C resolution by following the procedure below (the
display can also be changed to read in
o
F, call for information). There are two reasons to change the display
resolution:
1) To enter a setpoint faster (the display scrolls 10X faster in 1
o
mode than in 0.1
o
mode).
2) To display temperatures above 999.9 o .
1. Press and hold in both the Ð and Ï keys on the front of the temperature meter until the word “tunE” appears in the display, then release
both keys.
2. Press the Ð key once and “LEVL” appears in the display.
First hold in the ‘*’ key, then while holding in the ‘*’ key press the Ï key until “2” appears in the display then let go of all
the keys.
3. Press the Ï key repeatedly until the word “diSP” appears in the display.
First hold in the ‘*’ key, then while holding in the ‘*’ key press the Ð or Ï key until the value “1” [not “0.1”] appears in
the display, then let go of all the keys.
4. Press and hold in both the Ð and Ï keys until the temperature appears in the display, then release both keys.
3.12 Fusing. The controller is protected by a bank of fuses designed for solid-state equipment that are inside
the controller. None of the fuses are user serviceable and should be replaced by a qualified electrician If
fuses are replaced THEY MUST BE REPLACED BY AN EXACT EQUIVALENTS (such as a
Littlefuse #L15S 15). Fuses can be obtained from electrical supply houses or from J-KEM.