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Symptom Cause Remedial Action Prevention
Drains Blocked
Test to determine
whether failure has
occurred
Thermostat Failure
Overflow-
ing
Liquid
(Cont’d)
Heating
System Not
Working
(Electric
and AC/DC)
Chapter 1
Inspection
Inspecting
the unit for
damage
Check Carton
Contents
and
Familiarize
Yourself with
the
Centrex 2000
A/F
Placement of
AF Dry Toilet
1. Rake peat moss away from back two corners
of Centrex 2000 A/F. These are the“buildup”
areas. If drains are still clogged, proceed to
step 3.
2. Check drain line for kinks, blockages or
upward bends. Remove and flush if blockages
present, unkink if bent and ensure that the
drain pipe is sloping downward. If your
drain pipe is in order, proceed to step 3.
3. Use a wire to poke peat moss out of the drain
assembly at the back. You will notice if this
is clogged because you will see a brown spot
through the opaque assembly. (Only peat
would make it through the drum screen). If
there is no peat clog, or the problems contin-
ue, backwash the unit quickly with a hose by
applying the nozzle to one of the drain
assemblies and turning it on and off very
quickly. If the bottom of the unit is full of
liquid, you may wish to remove some prior to
back-washing. A shop-vac works well.
Pull drawer out and put your hand in the evapo-
ration chamber (Not in the liquid). If there is no
warmth rising from the floor of the unit, your
heating system is not working. It is most com-
monly the thermostat that has failed. If you
notice a lack of evaporation, but there is still
warmth in the heating chamber, see the Liquid
Buildup section on page 26 for solutions.
Have your serial number ready and call Sun-Mar
for a replacement. (Detailed instructions are
included with the replacement part)
If the insulation behind the thermostat access
cover is moist or discolored, or heating does not
work after the new thermostat has been connect-
ed, then the heating element has failed.
1. A clogged drain is not very likely
to happen if you rake your
evaporating chamber 1-2 times a
season (cottage use) and 3-4
times for continuous use.
2. Use premium 1”(25mm) hose for
the drain line. A good hose will
be less likely to kink. Use elbows
or fittings around bends to pre-
ventkinks.
3. Use the proper bulking material.
A ground fault circuit interrupter
(GFI) is recommended to protect
your Centrex 2000 A/F from power
surges that could cause your heating
system to malfunction.
Your thermostat and fan are the two
constantly moving parts on the unit,
and so are the most likely to fail.
Both are easy to replace.
i) If there is any visible damage to the carton-
the contents of carton MUST be inspected before signing bill of lading. Damaged units
should be refused. Call Sun-Mar immediately.
ii) Before signing the shipping papers and dismissing the driver.-
ensure that the carton contents have been inspected.
iii) If the shipper has left-
Report the damage immediately to the transport company and call Sun-Mar.
iv) Soon after delivery, remove the Centrex 2000 AF carefully
from the carton-
If there is hidden damage, or for any service Questions, contact Sun-Mar to
determine the best course of action.
Check that the carton contains the vent stack (pipe, fittings, roof flashing and diffusor); rake,
drain hose and fittings, extension pipe piece and transition piece. Notify Sun-Mar if you are
missing anything.
i) Turn the drum handle clockwise to rotate the Bio-Drum for mixing and aeration. (The drum
rotates counter-clockwise and the drum door closes). TThhiiss
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ii) Lift and remove the access door and rotate the drum until the drum opening is opposite
the access door for adding a compost bulking mixture. TThhiiss
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iii) Plug the unit’s electrical cord into a standard electrical outlet, and feel the air movement
from the vent outlet at the top left of the unit to ensure the vent system is working prop-
erly (Electrical or AC/DC)
v) Pull out the compost finishing drawers at the bottom left and right of the unit.
vi) After the unit has been plugged in for ten minutes, place a hand on the floor of the
evaporating chamber (the inside floor of the unit) to check it is warm to the touch, and
that the heater is working properly.
vii) Affix the “WARNING/CLEANING” sticker to the underside of the toilet seat cover, and check
that another is on the access port of the composting unit.
viii) Check the AF “Dry Toilet” for any damage.
Ensure that the floor joists are not in the way and that there is an unobstructed 10”(254mm)
diameter passage from the underside of the AF “Dry Toilet” to the top of the transition piece.
The 10”(254mm) hole should be centered 13”(33cm) from the back wall and at least 6.5”
(165mm) from the side wall in the room where the toilet will be installed.
The transition piece on the top of the composting unit should be located so that the center line
of the transition piece is directly below the center of the 10”(254mm) circular cutout which will
be made in the bathroom floor above. The transition piece should be completely vertical on the
composting unit.
