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Operation
Warning
Do not heat volatile materials outside
of a fume hood.The top surface and
heating element can reach the autoignition
temperature of some materials. A fire
or explosion may result if this warning
is ignored. This stirring hot plate is not
explosion proof
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.
Caution
To avoid damage to the top plate or heating
element, always keep a vessel filled with
liquid on the top plate of a stirring hot plate
when the unit is heating or cooling.
Note
For 4" models - SP88854200 and
SP88854205, the speed is indicated by the
marker on the membrane.
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Power Switch
A power switch, located on the left side, is used to power
the equipment on and off.
When the power switch is turned on, the unit briefly
displays the following according to this order: 1) type of
unit "SP", "HP" or "S" *, 2) software version and 3) current
temperature and RPM.
It is recommended to unplug the unit when not in use for
24 hours or longer.
Setting the Stirring Speed
Your Isotemp stirring hot plate has an electronic feed-back
speed control which will maintain a speed set-point from
50 rpm through 1500 rpm at ±5.0%. (Maximum speed is
dependent on viscosity of the solution.)
To set the speed, turn the STIR knob to your desired
setting. Turn the knob clockwise to increase the speed
or counter-clockwise to decrease the speed with 10 rpm
increments. To discontinue stirring, turn knob counter-
clockwise to OFF.
* "SP" stands for Stirring Hotplate models.
"HP" stands for Hot Plate models.
"S" stands for Stirrer models.
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