Came into possession of an electronic air cleaner unit from a small
commercial building that was being gutted and renovated. Overall size
about 24 by 18 inches and appears to have been installed directly in
the ducting of a hot air furnace/air circulating sytem etc.
It contains two slide out 'filter' units with fins on air input side
and thin wires on output. The power unit contains a Wabash transformer
(120v, 30 watt input) which presumably supplies a high DC voltage to
the filter units.
When 'found' in a dumpster it had been scrapped; the filters were
stuffed full with lint and hair (it seems the renovated building may
have housed a small hairdressing salon!). It seemed to have not been
cleaned out for 20 years!
Question:.Got 95% of the debris out without damaging the polarizing
wires/fins but OK to wash remaining dust and wisps etc. out with a
hose and then dry thoroughly?
Before testing the 'transformer' presume the output voltage will be
several thousand volts which cannot therefore be tested by an
ordinary test meter. There is a metal 'shorting' device, presumably to
safely discharge static/capacitive voltage on the filter units before
they are removed.
Intention is to convert the unit to a stand alone semi portable air
cleaner device, probably on casters, with a fan inside to move the
air. A plug in move around unit!
Any comments or advice re the electronic air cleaner unit. This house
with baseboard electric heating but not having any air circulation or
air exchanger, except to open the windows, and a workshop in the full
basement is somewhat dusty and this unit might help?
Might help. When I worked for Sears, my trainer used to
slide out the section with the fine wires. Soak it in hot
water, and powdered dish washing machine detergent. Dry
completely before put back together.
The electronic unit I had in my old
house had instructions to wash the
filters in the dishwasher. I used to
put the 2 electronic and 2 coarse
non-electronic filters in the dishwasher
with regular dishwasher soap and run
through the full cycle. I'd usually try
to open just before drying as the
filters seem to hold lots of water in
crevices. I'd tip them to drain, then
put them back and continue the dry
cycle. BTW, there is very little to go
wrong with the power supply. Usually
the big capacitors die. I replaced mine
with new ones from Mouser. They
actually had a higher breakdown voltage
and were pretty cheap. A high voltage
probe, like what is used to fix TVs
(does anyone fix TVs these days?) is
The thin wires are on the input side. They charge the dust particles so they
stick to the plates as they go through. The filters are generally reversable.
Turn them around (move the handle to the other side) if you want the air to go
the other way, and move the metal prefilters to the inlet side.
You can put the filters into a dishwasher to clean them with a non-phosphate
detergent. Tip them up on a corner to drain after washing.
You can probably find a users manual on the manufacturers website.
There is probably a "test" button near the bottom of the unit. When operating,
pressing the button should result in a "pop" noise from the internal spark
producer by the high voltage.
More advice; thank you to all who post.
The two easily removable filter units each have a label on them that
says 'Air direction' and closer inspection shows an arrangement of
fins and wires connected to the postive terminal of the so-called
'transformer' (HV DC power supply!).
The positive suppy is applied through an insulated metal stud on top
of each filter. The negative is metal frame grounded.
Still lots of little bits of hair etc. clinging to the wires; may have
to use scissors to snip them clear!
Just don't nick the wires. They may be individually removable.
I think there are two high voltages. One on the wire to charge the particles,
and the reverse voltage on half of the plates to collect the dust.
My local Honeywell service place actually sells a detergent for cleaning these
in the dishwasher. He was the one who said to use a non-phosphate detergent.
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