Thermo Scientific SUPER-NUOVA+ HP88850190, Руководство по эксплуатации

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Operation
Hard Switch
The SUPER-NUOVA
+
unit has a hard switch on the
left side of the unit. The unit may be powered on by
pressing the hard switch. When the unit is turned on, the
unit will initialize and then model name will be displayed
on the first row of display screen while software version
in second row. To turn off power to the unit, press the
hard switch off.
Setting the Stirring Speed
The SUPER-NUOVA
+
stirring unit has an electronic
feedback speed control which will maintain a precise
speed setpoint from 50 rpm through 1500 rpm.
(Maximum speed is dependent on viscosity of the
solution.) The SUPER-NUOVA
+
stirring hot plates are
equipped with a strong magnet and high torque motor
which will draw a vortex in fluids up to 700 cp.
To set the stirring speed, press “SPEED” key located
under display. Then the speed setpoint will flash. Use
the knob on the front panel to set a speed. Turn the knob
clockwise to increase the speed or counterclockwise to
decrease the speed. When desired setpoint has been
reached, press the “SPEED” key or wait 10 seconds, the
speed setpoint will no longer flash indicating that it has
been set.
Once the unit begins stirring, the display will indicate
both actual speed and setpoint. To stop the stirring
action without changing your setpoint press the knob
once. To resume stirring at the set speed, press the
knob again.
To turn stirring off, press “SPEED” key under the display
and turn the knob counterclockwise until the display
reads “OFF.”
Warning
Use caution when heating volatile
materials; top surface and element can
reach the “Flash Point Temperature” of
many chemicals. These hot plates are not
explosion proof. Fire or explosion may
result. Unit contains components which
may ignite such materials.
Use appropriate hand and eye protection
when handling hazardous chemicals.
“Caution: Hot Top. Avoid Contact.” The
top plate of the unit can remain hot for
some time after use. A “CAUTION - HOT
TOP” light will remain on until top plate
temperature cools to below 50°C.
Note
Boiling times are dependent on solu-
tion volume and the surface area of the
flask that is exposed to the hot plate. For
example, when heating the same amount
of solution in a 2L flask vs. a 1L flask, the
solution will heat about 20% faster.
Note
The top plate temperature will be higher
than the solution temperature.