Found the 40dx manual
Quote:
procedure must be followed before setting eggs.
5.1 As the incubator warms up and approaches its control setting the red LED will change from continuously on to
flashing. Allow the incubator to stabilise for at least an hour before adjusting the temperature.
5.2 Rotate the red adjustment spindle with a small screwdriver – clockwise to increase temperature, anticlockwise to
reduce it. 2°F (1°C) is about ¼ turn of the spindle.
5.3 When reducing temperature the red LED may go out while the incubator cools – this is normal.
5.4 Refer to the thermometer to check temperature. Adjust temperature with care – small differences have large
effects on hatching performance.
Quote:
Note: your incubator may not be set to the correct temperature from the factory and the followingStable and correct temperature is essential for good results. Adjust with care.
procedure must be followed before setting eggs.
5.1 As the incubator warms up and approaches its control setting the red LED will change from continuously on to
flashing. Allow the incubator to stabilise for at least an hour before adjusting the temperature.
5.2 Rotate the red adjustment spindle with a small screwdriver – clockwise to increase temperature, anticlockwise to
reduce it. 2°F (1°C) is about ¼ turn of the spindle.
5.3 When reducing temperature the red LED may go out while the incubator cools – this is normal.
5.4 Refer to the thermometer to check temperature. Adjust temperature with care – small differences have large
effects on hatching performance.