Labnet 611D Laboratory Incubators - Manual (Page 10)

Section
7
OPERATION
7.1 Check power supply against unit serial plate. They must match.
7.2
Plug service cord into the electrical outlet. Push power switch ON, and turn the
Safety Thermostat to its maximum position, clockwise.
7.3
Set Main Temperature Control: Enter desired set point temperature. To enter set
point mode on the control, press either the Up or Down button one time. The digital
display will start to blink, going from bright to dim. While blinking, the digital display
is showing the set point. To change the set point, use the Up and Down buttons. If
the buttons are not pressed for five (5) seconds, the display will stop blinking and
will read the temperature of the unit. Note that the Safety Thermostat should be
turned to its maximum position, until the unit has stabilized at desired set point
temperature. Allow the incubator at least 24 hours stabilize.
7.4 Calibration:
The Main Temperature Controller was calibrated at the factory at
37
C; however, it is recommended that calibration is done once the unit is installed
in its working environment and has been stable at set point for several hours.
Place a certified reference thermometer in the chamber. Be certain the
thermometer is not touching any shelving. Allow the temperature to stabilize again
until the thermometer reads a constant value for one hour. Compare the digital
display with the reference thermometer. If there is an unacceptable difference, put
the display into calibration mode by pressing both the Up and Down arrow pads at
the same time until the two outside decimal points begin to flash. While the
decimal points are flashing the display can be calibrated by pressing the Up or
Down arrow pads until the display reads the correct value. Allow the incubator
temperature to stabilize again, and recalibrate if necessary.
7.5
Set Safety Thermostat: As mentioned in step 7.3, the Safety Thermostat should
be initially set to its maximum position, to allow the unit to stabilize. Once the
incubator is stabile at the desired set point, turn the Safety Thermostat
counterclockwise until the Safety Light turns on. Next, turn the Thermostat
clockwise just until the Safety Light turns off. Then turn the Thermostat clockwise
two (2) of its smallest divisions on its scale past the point where the Safety Light
went out. This will set the Safety Thermostat at approximately 1
o
C above main
temperature set point.
7.6 Fan
Switch: Turn the fan switch on during warm up cycle for faster heat up time.
Also, this switch may be used for rapid recovery. Once the unit has reached a
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