Barnstead International MIRAK 725 Series, Инструкция по эксплуатации и список запасных частей

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Removing the Clear Plastic
Cover
Your MIRAK unit has a protective plastic cover over the
front control panel. This plastic cover is designed to pro-
tect the control knobs and the display panel from spills,
and should remain in place when the unit is being used.
To use the knob(s) while the plastic cover is in place, spin
the knob(s) from the bottom where the knob projects
below the plastic cover. This plastic cover can be easily
removed for cleaning by grasping the cover at each bot-
tom corner and gently pulling the sides of the plastic
cover away from the case while lifting the cover toward
you. To replace the cover simply slide it back onto the
case.
The Power Switch
Your MIRAK unit has a separate ON/OFF power switch
which is a black rocker switch located on the lower front
corner of the right side as you're facing the unit. This sep-
arate power switch allows you to turn your MIRAK hot
plate, stirrer or stirring hot plate on or off without disturb-
ing your temperature and/or speed setting. Your last set-
point will be held in memory even if the unit is unplugged
and will reappear on the display as soon as the unit is
powered up again. Whenever the power is on, a green
power light illuminates on the front control panel.
Setting the Stirring Speed
Your MIRAK stirrer or stirring hot plate has an electronic
feedback speed control which will maintain a precise
speed setpoint from 60 rpm through 1200 rpm at ±2 rpm.
(Maximum speed is dependent on viscosity of the solu-
tion.) The MIRAK stirrers and stirring hot plates are
equipped with a strong magnet and high torque motor
which will draw a vortex in up to 1800 ml of water stirred
in a 2 liter flask with a new 2" stir bar.
To set the speed, spin the SPEED CONTROL knob until
your desired setting is indicated on the digital display. As
you move the knob, the SET light next to the RPM display
will illuminate. Turn the knob clockwise to increase the
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Operation
Warning
Use caution when heating volatile
materials; top surface and element
can reach the “Flash Point
Temperature” of many chemicals.
These hot plates and stirring hot
plates are not explosion proof. Fire or
explosion may result. Unit contains
components which may ignite such
materials.
Use appropriate hand and eye protec-
tion when handling hazardous chemi-
cals.
"Caution: Hot Surface. Avoid Contact."
The hot plate will remain hot without
any visual indication for some time
after power has been removed.
Caution
To avoid damage to the top plate or
heating element, always keep a vessel
filled with liquid on the top plate of a
hot plate or stirring hot plate when the
unit is heating or cooling.