Red Light My machine is only 4 days old. I got the snapping noise and was advised to clean the Truman Cell. I, first, cleaned the wires as instructed with a q-tip. When I went to reset "Check Collector Cell" as instructed, red light remained on blinking. I then, removed the Truman Cell and cleaned and dried it as to the instructions. Resetting the light does nothing. It still remains red and blinking.

Top lid might not be closed completely. Should snap shut

it should have a prefilter already on it. they have a screen looking filter that goes on the front of the cell. If you don't have one you need to get one. You should also have a charcoal filter on the back side of the cell, if not then you'll need to get one of those also, the charcoal is for odors and not for filtering dust. Putting any other type of filter in front of the cell will just be turning this into a filter type cleaner and will be defeating the purpose of the reusable Trueman cell. You may as well just buy a different cleaner if you don't mind buying new filters instead of cleaning the cell. I would recommend cleaning the cell every 2 weeks to keep it working properly. This will also keep it from snapping, if yours is snapping it's already too dirty and needs to be cleaned, if it's snapping right after it's cleaned then you have a plate that is arcing in the Trueman Cell, I have posted a fix for the ProSheild Models to stop the cell plates from arcing.

which model XL series do you have? There is obviously something shorted or arcing on the plates of the cell. look at the plates and see if they are laying flat and the wires are all still attached across the front of the cell. A loose, sagging, broken or bad contact on the end plates will cause the bad cell lights. clean off the area where the cell makes contact inside the unit. The metal strips that run across the ends of the cell make contact with the plates inside the cell and get their power from them, dirty contacts in any part of these contacts will cause the problem. Even a bad contact from the end cap to the plates inside the cell will cause this. Try wiggling the cell around, kind of push on it on edge to get the plates to shift slightly and clean the points where the plates touch the outer strips on the sides. Check for arcing with the lights turned off,

which model, do you hear arcing or snapping sounds when it's running? Check wires that run along the inside front of the cell, loose, sagging or broken wires will cause this.

bad connection on plates or wires that run along the front of the plates in the cell. If you hear snapping or arcing then its the plates shorting out, look for bent plates and broken wires or loose sagging wires.

Hi There,

Here's how you can clean the machine, and I have copied the link to the owners manual below for your convenience.

Cleaning
The Cabinet
You can clean the air purifier cabinet with mild, non-abrasive cleanser and a
soft cloth. IMPORTANT: Unplug the unit from its electrical power source.
Do not spray cleansers or furniture polish into the louver or grill areas.

Collector Cell
Indicator light is green under normal operation and flashes red
when the cell requires cleaning. To clean, proceed as follows:
The red "WASH CELL" light will flash or illuminate when it is
time to clean your cell. However, it is recommended that every four to
eight weeks or if snapping sounds become frequent, clean your
electronic air purifier. Your electronic air purifier is still filtering the air
when the red light illuminates. Cleaning your electronic air purifier is a
snap too... and a must for efficient operation.
1. Turn the unit off and unplug it from the electric power source. If wall
mounted, remove unit from wall.
2. Remove front grill by unscrewing the retainer screw under the grill on
the cabinet bottom. (fig. 1)

3. Pull the cell out of the cabinet by using the two small handles on the
front of the cell. (fig. 2)

4. Snap off the charcoal odor absorber from the back of the cell. Change
as necessary for continued odor removal. (fig. 3)
5. Slide off pre-filter. This can be cleaned with the cell and reused. (fig. 4)
NOTE: Handle the electronic cell with care. Damaged metal plates
and/or broken wires will cause the air purifier to malfunction. (Do
not wash charcoal odor absorber; it is disposable.)
Cleaning with Assail-A-Cell® Cell Cleaner:
6. Using Assail-A-Cell® Cleaner, thoroughly saturate the cell and prefilter.
Be sure to spray between each cell plate and cover every
surface. Allow product to soak for a few minutes, not allowing it to dry.
Rinse thoroughly with water. For extremely heavy deposits, repeat the
process.
IMPORTANT: Dry the collection cell thoroughly outside of the
air purifier before reinstalling it into the air purifier. Ensure
that all areas including corners and areas that may trap
water are dry before reinstalling into the air purifier. DO NOT
place a wet or damp collection cell in the air purifier
4. Snap off the charcoal odor absorber from the back of the cell. Change
as necessary for continued odor removal. (fig. 3)



5. Slide off pre-filter. This can be cleaned with the cell and reused. (fig. 4)



NOTE: Handle the electronic cell with care. Damaged metal plates
and/or broken wires will cause the air purifier to malfunction. (Do
not wash charcoal odor absorber; it is disposable.)
Cleaning with Assail-A-Cell® Cell Cleaner:
6. Using Assail-A-Cell® Cleaner, thoroughly saturate the cell and prefilter.
Be sure to spray between each cell plate and cover every
surface. Allow product to soak for a few minutes, not allowing it to dry.
Rinse thoroughly with water. For extremely heavy deposits, repeat the
process.
IMPORTANT: Dry the collection cell thoroughly outside of the
air purifier before reinstalling it into the air purifier. Ensure
that all areas including corners and areas that may trap
water are dry before reinstalling into the air purifier. DO NOT
place a wet or damp collection cell in the air purifier.

Here's the link to the owners manual for your Oreck Air 7:
http://www.oreck.com/includes/customer-service/owners-guides/pdfs/3323-3018-AIR7-Rev-H.pdf

I hope this was helpful to you. If this helped, please be kind and rate the repair, or leave feedback for me. Thank you,

Chris Jones
GoVacuum.com

Funny you should post this when you did as I just finished reassembling my S1730.
Mine was making very loud noise, arcing violently, smoking slightly and would give a good shock when you touched the plastic covers(yes dirty plastic will conduct electric current).

1. Unplug the unit
2. Take the plastic covers off, front has four screws and back has snap at bottom, both slide up when loose.
3. Wash the plastic covers
4. take the light out and clean it with windex
5. Vacuum the inside, be careful of the two corona wires
6. Find the bead on each corona wire and while turning them slight so the edges scrapes the wire, move them back and forth to scrap the white power off the wires
7. scrape the cone shape plastic that the corona wires runs into, this build up is the primary culprit of the arcing which is the noise you hear. be careful of the corona wires again. I used an exacto knife and gently scraped it, sandpaper has been suggested elsewhere, once done scrapping, wipe down to clean any residue. The top cones are only part accessible, after cleaning mine the noise still persisted but acceptably lower than before. I think if you completely take apart the unit you can clean this cones better.
8. Reassembly is the same is opposite of disassembling.

Hopes this helps you.

Hi there,

We purchased one of these in April 2009. Same issue appeared with us. Cleaned the cell and the "clean collector cell" still stayed illuminated. Checked the manual and the trouble shooting section stated to hold down the "air revitalizer button" till the "clean collector cell" light blinks three times. After this operation the light went out and all was fine!!!! Hopes this clears your issue!

cell is dirty, or you have a broken wire in the cell.

clean your cell. Allso check for broken or loose tungsten wires in cell.