The key to the success of the CENTREX 2000 lies in it’s three chamber design. Each of the three
chambers; patented Bio-drum, compost finishing drawer, and evaporation chamber, have their own
independent environments for optimum efficiency.
The CENTREX 2000 electric version has a thermostatically controlled heater and fan assembly to help
evaporate liquid and should be used where there is a constant electrical supply. The CENTREX 2000
NE (non-electric) version is for use where there is no continuous electric supply. The CENTREX 2000
NE has no fan or heater. Odorless operation is achieved by a 4” vent which acts like a chimney cre-
ating a partial vacuum within the unit.
The Patented Bio-Drum
Unique to Sun-Mar, the patented bio-drum provides the necessary mass to maintain good compost
and allows easy aeration of the compost by simply turning the drum. Excess liquid will exit through
a screen in the bottom of the drum into the evaporation chamber. Mixing the Bio-drum is accom-
plished by rotating the handle in a clock-wise direction. Compost is removed from the drum by pulling
out the white drum lock button (below the handle) and rotating the handle in a counter clock-wise
direction.
The Compost Finishing Drawer
The compost finishing drawer sits in an opening in the front of the unit. Compost in the drawer is
isolated from mixing with new waste while resting for 4 weeks so that it can finish composting.
The Evaporation Chamber
The evaporation chamber is the floor of the unit
under the compost finishing drawer. This is the
area where any excess liquid will gather for
evaporation. A safety drain exits from the left
side of the composting toilet which will drain
over-flow liquid that is not evaporated to an
approved facility.
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The CENTREX 2000
Bio-Drum
Evaporation Chamber
Finishing
Drawer
