CORNING PC-400D Manual de instruções - Página 6
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The following table shows a typical difference between the temperature
set on the Heating Temperature Display and the actual temperature
measurement of the ceramic top surface .
Actual
Temp . Set
Top Surface
on Display (°C)
Temp . (°C)
50
45
100
85
150
125
200
165
250
205
300
245
(This information was taken using a 6795-420D with no top load in 20°C
ambient conditions) .
Using the External Temperature Controller (Corning Cat. No. 6795PR) enables
precision temperature control of materials placed in vessels on top of
the product.
When the External Temperature Controller is connected to the product, the
closed loop control process is extended to include temperature input from
the External Temperature Controller . The microprocessor-controlled heat,
generated by the heating element, is based upon the sensor temperature
located in the tip of the External Temperature Controller 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 .
To directly control the temperature of liquid in a vessel on the top surface,
place the External Temperature Controller into the liquid and connect the
Controller to the product . The Heating Temperature Display shows the
temperature of the liquid and can be used to adjust the temperature of
the liquid .
See Section 10 .0 for ordering information .
Caution: The top surface and the vessel used may be at substantially higher
temperatures than indicated by the setting on the Heating Temp erature
Display as the controller regulates the liquid temperature inside the vessel .
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www.
Actual
Temp . Set
Top Surface
on Display (°C)
Temp . (°C)
350
285
400
325
450
365
500
405
550
440
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7 .2 Safety
The microprocessor-controlled system has built-in error routines to detect
product operation in some unfavorable conditions . The type of error rou-
tines which may be active in a product varies depending upon the function-
ality of the model and the operating software version .
If an error routine is engaged, the product will typically shut down . Some
error routines will display an error code number in the left digital location
of the Heating Temperature Display when the product is shut down . For
more information on error codes, contact Corning Scientific Support at
978 .442 .2200 .
A product shut down by an error routine must be disconnected and recon-
nected to mains input before it can be used again . Please contact Corning
Life Sciences or a Corning authorized repair facility (visit www .corning .com/
lifesciences) if a product does not reset from the error routine shut down or
if it continues to shut down after resetting .
Caution: Error routines built into these products do not substitute the need
to use these products per the specified operating conditions and according
to safe laboratory practices . There are potential failure modes in product
functionality or in the process of use that could result in uncontrolled or
unexpected heating of the top surface . Reaction plans should be developed
and safety precautions put in place based on the worse case scenario that
any materials placed on the top surface could be subjected to a continuous
supply of heat, raising the material temperature to levels in excess of 550°C .
8 .0 Repair
There are no direct user serviceable components inside this series of
products . A list of available replacement parts are listed in Section 11 .0 .
Please contact Corning or a Corning authorized repair facility for
repair or maintenance issues .
9 .0 Maintenance
Power
Caution: Disconnect power to the product by unplugging the power cord
before performing any maintenance or inspection procedures .
Inspect the power cord regularly and replace if damaged . Use only
w
replacement power cords available from Corning or Corning authorized
product distributors .
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