Safety Advice - Bibby Scientific stuart UC150 Instrucciones De Funcionamiento

not to the temperature of the contents of the
vessel being heated. Turn the control knob
clockwise to the required plate temperature. As
the plate heats up the LED temperature segments
will light up in turn and their light intensity
increase until the set surface temperature is
reached. Conversely if the unit is cooling, the LED
temperature segments will go out as the plate
approaches the set temperature.
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.
WARNING: During heating the hotplate
casing around the hotplate surface can
Caution
become hot to touch.
Hot
Stirring
UC151, UC152, US151, US152
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 with the
UC150, UC152, US150, US152
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
2
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). The analogue heat
control is disabled, allowing precise setting of
temperature via the SCT1 temperature controller.
The illuminated contact thermometer indicator
LED indicates communication between the SCT1
temperature controller and hotplate (figure 3).
For full instructions on use please refer to the
SCT1 temperature controller manual.
NOTE: When the SCT1 is used, the LED
temperature segments adjacent to the "HEAT"
control knob refer to the surface temperature of
the plate, not the sample.

Safety Advice

❖ Do not use the instrument to heat inflammable
liquids.
❖ Never lift or carry the instrument until it has
been switched off and allowed to cool for at
least 30 minutes. The hot warning light will
give guidance.
❖ The unit should be carried using both hands
with the fingers under the side edges.
❖ Never move or carry the unit with containers
on the top plate or while still connected to the
mains supply.
❖ There is a danger of liquid spillage if containers
are over-filled and stirred at high speed. Always
build stirrer speed slowly and never stir more
rapidly than necessary.
❖ NEVER place a cold glass vessel onto a hotplate
which is already hot.
❖ NEVER use a retort rod longer than 600mm.
❖ When a retort rod is installed with apparatus
attached, or when swivelling support rods, take
care that there is sufficient weight on the plate
to prevent the whole unit tipping over.
❖ When using a retort stand, in order to provide
the unit with adequate ventilation the base of
the retort stand must NOT exceed 19.5 mm in
height and 125 mm in width.