3.18
FAN REGULATION
Note! Without the fan functioning properly and ventilation path being kept clean, the biological
process will not work! Clean ventilation filter regularly!
The regulation of the fan is only for the speed of the fan during the waiting time. When the cylinder
rotates the fan is always working at full speed.. The fan is the “lungs” of the Big
Hanna – if the biological process does not get the right amount of oxygen
the result will be a bad smell so it is important to regularly
check the airflow and to understand how
the airflow works.
1.
Air inlet (the air has the same
temperature as the room where it
is installed).
2.
Air is preheated by a heater
(when installed and ON) when
transported between the
cylinder and hood if the
temperature is below 10-16ºC.
3.
Air inlet into the cylinder.
4.
Fan extracts the hot moist air from the cylinder.
5.
Air outlet from the cylinder
6.
Ventilation filter.
If the airflow is too strong the compost material will dry out, if it is too
low the compost material will be too wet and/or bad odour may leak
out from the composter. The setting of the fan is dependent on the
ventilation of the installation area. The fan speed changes immediately
when the value is changed. In some installations the fan should be still
during the wait time, however this is very rare.
There is more information about ventilation and airflow in the installation manual.
3.19
HEATER (OPTIONAL)
If a heater is installed this is turned on and set using this menu. The
function of the heater is to make sure the incoming air is above 10-15
ºC. In order to turn on the heater set the switch to 1. There is a
temperature sensor in the air inlet in to the cylinder. Set the
temperature to 10-15 degrees. The heater will automatically turn off
when this temperature is achieved in the air intake.
THE RECOMMENDED
FAN SPEED IS 20%.
Fan speed can be set
between 20% and 100%.