Operating Instructions - VWR 444-0268 Manual De Instrucciones

O I
PERATING NSTRUCTIONS
The Mini/Microplate Shakers have been designed for the speed and time
functions to work independently of one another. The speed can be reset
without resetting the timer and the timer can be stopped and started
without interrupting the shaking function.
1. Getting ready:
a. Plug the power cord into a properly grounded outlet. The standby
indicator light will illuminate, verifying power to the unit.
b. Press the standby button to move the unit from standby mode.
The standby indicator light will turn off and the speed and time
displays will illuminate, displaying 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 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 shaking function. The indicator
light below the speed display will illuminate to indicate the shaking
function is in use and remain lit until shaking 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.
c. Speed adjustments can be made without interrupting shaking by
using the up/down arrows below the speed display. After the
change has been made and you release the button, the display will
blink off and then on indicating the new set speed has been
accepted.
d. To stop the shaking function, press the on/off button below the
speed display. The speed indicator light will turn off.
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3. Setting time to zero (0:00) and continuous mode: Accumulated time.
a. Press and hold the on/off button below the time display. After three
(3) seconds the display will indicate the previous set time.
b. Simultaneously press both the up and the down arrows, the display
will indicate zero (0:00). The unit time is now set to zero (0:00)
minutes. Alternately, you can use the up/down arrows to get to
zero (0:00).
c. Press the on/off button below the time display. The display will
indicate accumulated time. The up/down arrows will become inactive.
To stop timer, press the on/off button again. IMPORTANT: This will
NOT interrupt the shaking function. Press the on/off button below
the speed display to interrupt the shaking function.
d. To reset, press and hold the on/off button below the time display.
After three (3) seconds the display will indicate the previous set
time, which was zero (0:00).
4. Setting timed mode: Programmed time.
a. Press the up/down arrows below the time display until you reach
the desired time.
b. Start this function by pressing the on/off button below the time
display. The unit will run for the selected time, the up/down arrows
will become inactive while the timer is running. The unit will stop
shaking when time display reaches zero (0:00). Four (4) audible
beeps will indicate the count down function is complete. The time
display will default back to the set time. To repeat for the same time,
simply press the on/off button again.
c. To interrupt an automatic timing cycle before it is completed, press
the on/off button below the time display. The display will flash off
and on to indicate the time function is on "hold". IMPORTANT: This
will NOT interrupt the shaking function. Press the on/off button