of the Excel design meant that a three chamber unit could
be specifically designed for those with NO continuous 110
volt supply. First launched in 1981, the Excel NE has no
heater in the base but features an insulated Bio-drum to
maintain the warmth of the compost.
If the Excel
NE is used residentially or heavily, or is in a place which
is subject to downdraft, an optional 12 volt fan should
be installed in the vent stack. This fan draws 1.4 watts
and can be powered by a solar panel and/or 12 volt battery.
capacity on the Excel NE is variable, so the 1" drain
at the rear should be connected to an approved drain pit,
container, or other facility.