Shellab SSI5R-2 - Manual (Page 11)

SHEL LAB SI6/SI6R Shaking Incubator Operational Manual
11
3. When you turn the unit on for the first time,
use a screwdriver or coin to turn the Safety
Temp knob fully clockwise to its maximum
position.
This deactivates the Over-
Temperature Protection (OTP) feature. For
more information on the OTP, see on page
12.
Setting the Chamber
Temperature
You raise or lower the temperature in the
chamber using the main temperature controller,
which consists of a digital display and UP and
DOWN arrow pads marked Set Temp.
To set the chamber temperature
 To set temperature, press and release either up or
down key and display will blink. Then, press and
hold either up or down key to scroll up or down for
set point.
When you press either the Up or Down arrow key,
the display starts to blink from bright to dim and
shows the temperature set point, which is the
temperature to which the unit will stabilize.
The incubator accepts the new set point after you
release the arrow pads for 5 seconds. At that time,
the display stops blinking and indicates the
present chamber temperature.
After setting the chamber temperature, wait at
least 1 hour for the chamber temperature to
stabilize to ambient conditions. To achieve
maximum temperature stability, wait 24 hours
before you begin using the unit.
Calibrating the Main
Temperature Control
Calibrating your unit ensures that the temperature
inside the incubator matches the temperature reading
of a certified reference thermometer.
We recommend that you calibrate your unit once it has
been installed in its working environment and the
chamber temperature has been stable at the set point
for several hours.
You should calibrate your unit at or as close to the
temperature set point as possible. To maximize your
results, calibrate the unit each time you operate the unit
at a new temperature.
Use only a Certified (NIST) temperature-measuring
device to calibrate your unit.
To verify that your unit needs calibration
1. Be sure the temperature within the chamber has
stabilized at the set point for several hours.
2. Insert a certified reference thermometer through
the access porthole. To attain the best calibration,
place the thermometer as close to the location of
the samples. Be sure the thermometer is not
touching any shelving.
3. Allow the reference thermometer to stabilize until it
displays a constant value for one hour.
4. Compare the temperatures displayed by the
incubator and reference thermometer.
If they match, you do not need to calibrate your unit for
that temperature. If they do not match, you need to
calibrate your unit.
To calibrate your unit
1. Simultaneously press and hold the Set Temp Up
and Down arrow keys.
After approximately 5 seconds, the temperature reading
will blink off and on. Release the Up and Down arrow
key.
2. While the display is blinking, press the Up or Down
arrow keys to select the temperature that matches
your reference thermometer. When you hold an
arrow key, the display scrolls through the
temperature settings.
The incubator accepts the new temperature reading
after you release the arrow pads for 5 seconds. At that
time, the display stops blinking.
3. For best results, re-verify the calibration after
the unit has remained on for 24 hours and its
temperature has varied by no more than + 1

C.
Setting the Shaker Speed
Your unit is equipped with a shaker mechanism that
provides maximum oxygenation of your samples.
You control the shaking mechanism using the shaker
control
—which consists of a digital display that shows
RPM (rotations per minute) in increments of 1 and
UP/DOWN arrow pads marked Set RPM
—and the
RPM switch.
To turn the shaking mechanism on
1. Be sure the door is completely closed.
2. Push the RPM switch to the On (I) position.
The shaker mechanism will increase the speed up
to the current set point, which is the speed at
which the unit will rotate per minute. Note that the
shaker motor runs continuously as long the RPM
switch is On (I).
To adjust the shaker speed (RPM)
1. Press either the Up or Down arrow key once. The
display starts to blink from bright to dim and shows
the RPM set point.
2. Press the Up or Down arrow keys to select the
desired RPM.
The incubator accepts the new set point after you
release the arrow pads for 5 seconds. At that time,
the display stops blinking and indicates the
present RPM.
Even if you turn the RPM switch off (O), the
controller remembers the last RPM value used.
You can adjust the movement of the shaking
mechanism. See page 13.