AF “DRY TOILET” ROUGH IN DIMENSIONS
Occasional
Urine
Odour
Outside
Strong
Sewage
Odour
Present
when drum
turns
Fan Noisy
(Electric
and AC/DC)
Downdraft is dependent on wind
direction, as well as natural
obstructions, etc.
Initially, install the vent 20-30”(60-
90cm) above the peak of the roof.
If symptoms occur, add lime or a fil-
ter box.
Follow “Ongoing Maintenance” and
use proper bulking material.
Clean the AC fan with a small brush
and/or compressed air nozzle once
every 2-3 years in cottage use, or
once a year residentially. To do
this, remove the fan assembly by
taking off the snap cap covers and
unscrewing the screws which hold it
in.
The entire assembly will then simply
slide out. This will prevent wear
and lengthen the life of your fan.
Cleaning should not be necessary
for the DC fan.
Symptom Cause Remedial Action
Prevention
1. Vent stack not
installed even
with peak of roof.
2. If vent stack is
installed above
roof peak, natu-
ral obstructions,
such as tall
trees, being
located in a
valley or close to
a hill may be
causing down-
draft.
Compost is
anaerobic
Fan damaged in
shipping, or bear-
ings are beginning
to wear if it is rat-
tling.
1. Check that the vent is installed 20-30”
(60-90cm) above the peak of the roof. If
not, extend the vent. Guide wires may be
necessary.
2. Add lime to the evaporation chamber - as
much as you think necessary. You will have
to rake more often if you do this. You can
also add lime to the compost if desired, but
no more than 1 cup(250ml) per week as it
may upset the PH balance in larger
amounts.
3. Sun-Mar has a filter box available which will
filter the ammonia out of the 50mm stack
vented air in a downdraft situation. Call
Sun-Mar for details.
Begin following: “Compost Troubleshooting” sug-
gestions.
1. If the fan is rattling, it may need to be
cleaned or the bearings are worn and the fan
needs to be replaced.
2. A hum is the normal sound the fan will make.
If you are in a very quiet setting it will be
more noticeable. If this is the case, consider
purchasing an AC fan speed control so that
the fan may be turned down when the noise
bothers you. These are not available for our
DC fans, but should not be necessary.
3. If it is a vibration noise, you may need to tie
down the top of the stack with guide wires
and bracket the pipe that runs up the side of
the structure.
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Summary of Contents for centrex 2000 af
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