OHAUS STHVAL Manual De Instrucciones página 6

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D.
C.
The front panel of the High Volume Stirrer - STHVDG contains all the controls and
displays needed to operate the unit.
A. Standby button/standby indicator light: The standby indicator light will illuminate
when the unit is plugged in. The unit will be in standby mode. Press the standby
button to activate the speed and time functions. The standby indicator light will shut
off and the speed display and time display will illuminate. Press the standby button
again and the unit will once again be in standby mode.
B. Speed display: Displays the speed of the stirrer. C. Up/down arrows for set-point
control. On/off button starts/stops stir function. D. The speed indicator light will be
illuminated when the unit is stirring.
E. Time display: Displays accumulated time (continuous mode) or how much time
is remaining (timed mode). F. Up/down arrows for set-point control. On/off button
starts/stops the time function. The display range is from 0 to 9,999 minutes in one
(1) second increments. The display will indicate minutes and seconds until the timer
reaches 99 minutes and 59 seconds (99:59), then the display will automatically
display minutes up to 9,999.
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PeraTing nsTruCTions
The High Volume Stirrer - STHVDG has been designed for the speed and time
functions to work independently of one another. The speed can be re-set without
re-setting the timer and the timer can be stopped and started without interrupting the
stirring function.
1. Getting ready:
a. Plug the power cord into a properly ground outlet. The standby indicator light
will illuminate, verifying power to the unit.
b. Place a stir bar into the vessel to be stirred.
A.
c. Place the vessel, with contents, onto the center of the stirring position on the
top plate. This is important for stirring because the stir bar will be well within the
magnetic field.
d. Press the standby button to move the unit from standby mode. The standby
indicator light will turn off and the speed/time displays will illuminate and display
the previously used settings.
2. Setting speed:
a. Press the up/down arrows below the speed display until you reach the desired
speed. When you release the arrow button, the display will blink off and then
on indicating the new set speed has been accepted.
b. Press the on/off button to start the stirring function. The indicator light below
the speed display will illuminate to indicate the stirring function is in-use and
will remain lit until stirring has ceased. The microprocessor controlled ramping
feature slowly increases speed until the set-point is reached which helps to avoid
splashing and provides excellent low end control. The microprocessor also
regulates the stirring speed, sensing
your requirements whether stirring an aqueous, viscous or semi-solid solution.
c. Speed adjustments can be made without interrupting stirring by using the up/down
arrows below the speed display. After the change has been made and you
release the arrow button, the display will blink off and then on indicating the
new set speed has been accepted.
d. To stop the stirring function, press the on/off button below the speed display.
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