Controls - Labnet 311DS Instruction Manual

6.0 Controls

The controls for the Labnet 311DS Shaking Incubator include power to the oven, temperature setting, safety temperature overshoot
setting, shaker speed, and shaking time. In addition there is a door-open shaker shut-off switch and a chamber light switch.
1. Main power switch: Turns the power to the unit On/Off. Illuminates green when On.
2. Shaker controls: The shaker controls are also microprocessor based:
Run lamp – Illuminates when the shaker is started and stays illuminated when the shaker is running.
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Timer lamp – Illuminates when the shaker display is in the Time display mode counting down the remaining run time or
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showing the set run time.
RPM lamp – Illuminates when the shaker display is in Speed display mode showing the current shaking speed or showing the set
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shaking speed.
3. Shaker display: This three digit display shows the shaker speed setting or shaker time setting or remaining shaker run time while
counting down. It also shows:
Hld – When the shaker is set for continuous untimed running.
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Opn – When the incubator door has been opened, automatically stopping the shaking motion.
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NOTE: The timer continues to count down but is not displayed.
End – When a timed shaking run has ended.
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F60/F50 – When the shaking incubator is first powered up indicating the line frequency of the power line.
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4. Push to shift/turn set button: This encoder provides the following multiple functions:
Increases and decreases the shaker speed setting in 1 rpm increments from 20 to 300 rpm.
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Increases and decreases the run time setting from 30 seconds to 99 minutes and 50 seconds and HOLD (Hld) for continuous
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operation. Time is changed in 1-second increments to 10 minutes and then 10-second increments thereafter.
Shifts the shaker display from Time display to Speed display and back.
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5. Stop/Start: Stops and starts the shaking mechanism and causes the RUN lamp to be illuminated.
6. Chamber light switch: Turns the chamber light On/Off when the power is On.
7. Temperature Controller and Temperature Set: The controller has a 3-digit display for displaying chamber temperature or setpoint
information. Up and Down arrows are used to change the setpoint and controller mode of operation. To enter the setpoint mode
of operation, press either the Up or Down arrows one time. The display will start to blink, going from bright to dim. While blinking,
the display is showing the setpoint . To change the setpoint , use the Up and Down arrows. If the arrows are not pressed for five
(5) seconds, the display will stop blinking and will read the chamber temperature. After setting the temperature, allow at least one
hour for the chamber temperature to stabilize and 24 hours for optimum stabilization.
8. Heating Indicator: Illuminates green when the controller is calling for heat from the heater. This indicator will be on continuously
while the oven heats up to the set temperature and will then cycle on and off at the set temperature.
9. Safety Indicator: Illuminates red when the Safety thermostat is activated. Under normal operating conditions this indicator should
never be on.
Safety Thermostat: The Safety thermostat located on the back of the unit is manually set and completely independent of the Main
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Temperature Controller. The safety guards against any failure of the Main Controller that would allow temperature to rise past
the safety setpoint . If the temperature rises to the safety setpoint , the Safety takes control of the heating element and allows
continued use of the incubator until the problem can be resolved or service can be arranged.
Door Open Switch: Senses when the incubator shaker door is open and sends a signal to the microprocessor which causes the
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shaker to stop running as a safety measure. However, in a timed run, the timer will continue to count down when the door is open.
Closing the door restarts the shaking motion.
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