Cleaning And Care - Cole-Parmer Stuart UC150 Manual De Instrucciones

WARNING: When the surface becomes
too hot to touch the red "HOT" warning
light on the front panel will begin to flash (see
figure 1). This will continue to flash while the
plate temperature is above 50°C for a maximum
of 30 minutes, even if the unit is disconnected
from the electricity supply.
WARNING: The plate may still be hot
beyond 30 minutes when large masses are
left on the plate, even though the "HOT"
warning light has gone out.
WARNING: The top surface of the
instrument may be HOT, especially in free
air when a surface temperature of 450°C can be
achieved on the ceramic top models and 325°C
on the metal top models. Do not leave heaters
switched on when not in use.
Stirring
UC151, UC152, UC152D, US151, US152,
US152D
Your unit is provided with a two 25mm PTFE
stirrer bars. These should be placed in the liquid
to be stirred. They are suitable for liquid volumes
up to 500ml.
Switch the unit on using the mains on/off switch
(see figure 2). The control knob labelled "STIR"
on the front panel controls the stirrer speed.
When switched on a green stir-on light
illuminates, (see figure 1). The knob is graduated
with an arbitrary 1-9 scale. Turning the knob to a
higher number increases the stirrer speed.
Using the Optional Accessory SCT1
Temperature Controller
UC151, UC152, UC152D, US151, US152,
US152D
The SCT1 temperature controller allows accurate
temperature control of aqueous and oil based
samples in the laboratory and can be used in two
different modes, as a precise temperature
controller from 20 to 200°C or as a digital
thermometer from -4 to 325°C.
Connection of the SCT1 temperature controller
probe is via the DIN probe socket located at the
rear of the hotplate (figure 2).
In control mode, the heat control of the hotplate
is disabled, allowing precise control of sample
temperature via the SCT1 temperature controller.
The illuminated contact thermometer indicator
LED indicates communication between the SCT1
5
temperature controller and hotplate (Figure 3).
When used in monitor mode, the SCT1 operates
as a digital thermometer and the hotplate
temperature is controlled by the "HEAT" control
knob as described above. In this mode the LED
temperature segments adjacent to the "HEAT"
control knob (analogue models) or the LED
temperature display (digital models) refer to the
surface temperature of the hotplate not the
sample.
For full instructions on use please refer to the
SCT1 temperature controller manual.

Cleaning and Care

Before attempting cleaning:
Ensure that the top is cool, disconnect from the
mains electricity supply.
The metal casing should be cleaned using a damp
cloth and a mild detergent solution.
Ceramic top units:
A damp cloth will normally remove most types of
contamination. For more difficult stains a
domestic cream cleanser is recommended.
Cleaning is made easier if spillages are attended
to promptly. In any case, spillages of alkali,
phosphoric acid and hydrofluoric acid MUST be
removed immediately as these chemicals can
attack and damage the glass ceramic. Ensure that
the appropriate safety precautions are observed.
During cleaning and general operation take care
not to scratch the surface of the top plate as this
could result in subsequent thermal breakage.
WARNING: A ceramic top which is
scratched, chipped, chemically etched or
damaged must not be used.
Metal top units:
The metal top plate should be cleaned using a
damp cloth and a mild detergent solution.
Cleaning is made easier if spillages are attended
to promptly. In any case, spillages of acids and
alkalis MUST be removed immediately as these
chemicals can attack and damage the surface of
the coated aluminium alloy. Ensure that the
appropriate safety precautions are observed.