Heating Instructions; Heating Operation; Principles - CORNING PC-400D Manual De Instrucciones

6 .0 Heating Instructions

Without External Temperature Controller for PC-400D, PC-420D,
PC-600D, and PC-620D Models
1 . Fill the vessel with solution to be heated .
2 . If using a PC-420D or PC-620D model and the stirring function, place the
stir bar into the vessel .
3 . Place vessel in the center of the top surface .
4 . Turn Heat Control Knob until the Heating Temperature Display shows
the desired temperature. The temperature setting can be adjusted in 5°C
increments .
Flashing Display: The number shown on the Heating Temperature
w
Display will FLASH when the actual heating temperature is not at the
set temperature .
Constant Display: The number shown on the Heating Temperature
w
Display will remain constantly ON when the actual heating temperature
is at the set temperature .
Hot Top Indicator: The Hot Top Indicator will be ON at all times when
w
the temperature of the top surface is too hot to touch (greater than
~ 60°C) .
The Hot Top Indicator will FLASH when the Heat Control Knob is
w
turned OFF but the top surface is still too hot to touch .
The Hot Top Indicator will be OFF when the temperature of the top is
w
less than ~ 60°C .
Caution: The Hot Top Indicator will turn OFF when the power cord is
disconnected from the product even if the temperature of the top surface
is still too hot to touch .
With External Temperature Controller, Corning Cat . No . 6795PR
for PC-400D, PC-420D, PC-600D, PC-620D, and 6795PR Models
1 . Connect the External Temperature Controller to the connector on the
back of the unit .
Temperature Probe in Use Indicator: This will illuminate when the
w
External Temperature Controller is properly connected .
2 . Fill the vessel with solution to be heated .
3 . If using a PC-420D or PC-620D model and the stirring function, place the
stir bar into the vessel .
4 . Place the vessel in the center of the top surface .
6
5 . Insert the tip of the External Temperature Probe into the solution .
The tip should be located in the center of the vessel and at
w
approximately one-half of the depth of the solution .
6 . Secure the position of the External Temperature Controller by using a
ring stand/support rod and clamp .
Ensure the cable of the External Temperature Controller does not come
w
into contact with the heating surface .
7 . Turn the Heat Control Knob until the Heating Temperature Display
shows the desired heating temperature .
Flashing Display: The number shown on the Heating Temperature
w
Display will FLASH when the actual heating temperature is not at the
set temperature .
Constant Display: The number shown on the Heating Temperature
w
Display will remain constantly ON when the actual heating temperature
is at the set temperature .
Hot Top Indicator: The Hot Top Indicator will be ON at all times when
w
the temperature of the top surface is too hot to touch (greater than
~ 60°C) .
The Hot Top Indicator will FLASH when the Heat Control Knob is
w
turned OFF but the top surface is still too hot to touch .
The Hot Top Indicator will be OFF when the temperature of the top is
w
less than ~ 60°C .
Caution: The Hot Top Indicator will turn OFF when the power cord is dis-
connected from the product even if the temperature of the top surface is
still too hot to touch .

7 .0 Heating Operation

7 .1 Principles

The heating element and a temperature sensor are located just beneath
the ceramic top surface of the product . The microprocessor-controlled heat,
generated by the heating element, is based upon the sensor temperature
and the value set on the Heating Temperature Display . When the sensor
temperature is not within range of the value set on the display, the display
will FLASH . When the sensor temperature is within range, the value displayed
will remain constantly ON .
The Heating Temperature Display does not indicate the actual temperature
of materials placed on top of the product or the actual temperature of the
ceramic top surface .
7