Burnt plastic smell

I have the same unit.
Have you cleaned out the removable filters?
also the red light at the bottom indicates the time to clean the filters.
to reset it, use a paper clip. The red light on the bottom right is the filter indicator light, what looks like it should be a light beside that filter light, is actually a reset button, just poke it with a paper clip for a few seconds to reset. The bottom red light goes out

That unit is a very heavy duty machine that uses ionization to clean air. There is a high voltage power supply that is used to generate ions. The unit can release ozone and that substance has a definite smell to it. If you have ever been near a copy machine or an electric motor that sparks, you would smell ozone. The concern is whether or not it is ozone. Ozone is regulated by the manufacturers to be held at a permissible level because at high concentrations it is an irritant and can cause respiratory issues by itself. The power unit for that air cleaner is on the top near the back and you can run the machine for a while to see if that area gets hot. That would be a bad sign. All the documentation is here: http://electronicaircleaners.com/f50f1032parts.aspx But if you don't trust the unit, take it or send it back.

bearing hard to move will put strain on the belt and burn it. the bearing is easily removable pull it off, sometimes its just a good clean it will need, if will not come off tape it off. remove the muck build up and give the bearing a good soak in some wd40 or oil and wipe off and check for good movement then replace the belt. as it will snap more easy now it has been heated up.

Hi Pontiac ghos, You should call customer service at 800-875-8577 so they can do some trouble shooting and replace the complete unit if need be. Thank you.

The Classic XL-15 should have 2 individual indicator lights. The 'red' light is the ionizer indicator, and the 'green' light is the ozone level indicator. Both lights should be illuminated, if the unit is operating properly. The red light should be pulsing, and the green light should be dimly lit, and brightened as the output knob is turned up - indicating a higher ozone production. If the green light is not lit, you likely won't smell the ozone. The first thing you should try, is cleaning the filter and glass ozone plate. Unplug the unit and remove the rear air filter. Clean the filter with clean water and allow to COMPLETELY air dry. Removed the glass plate by depressing the lever behind the glass plate, and gently pulling it out. Clean the glass with a half water, half ammonia (or distilled white vinegar, if ammonia not available) and an old toothbrush to clean between the mesh. Dry plate with a hair dryer and re-place plate into unit. Replace dried air filter, making sure the little tab on the bottom is secured into the interlock. Power the unit on and you should see the indicator lights and smell the fresh ozone!

Mine is a Pro-series Quadra. It needed better cleaning.

The front and rear plastic grill scome off (release catch at the bottom of each), allowing access to the central core. I cleaned it with a damp rag (let it dry before you turn it back on). Be very careful of the two wires running the length of the unit -- if you break these it will not work. I did, however, gently clean them.

When I restarted it there was an unusual smell for a few minutes, but all is working well again.

Is it possible you put the filter in backwards?

Mine does too. Did a little research - I guess all air filters let out a little bit of ozone. Some describe the smell of ozone to be something like bleach yet others say it smells like geraniums or even "sparks" (like the sparks that come off of the bumper car ride at the fair...hmm...interesting). Not sure which to believe, but I know mine smells.
I found a manual talking about reducing this smell. Said the first couple of weeks are the worst of it, but if it still bothers you, you could install an "activiated carbon filter" down stream from the air filter, or go through complicated instructions (for whatever model they were talking about) to go into the of the machine and switch stuff around.
Both solutionssound complicated to me.
I'm just happy knowing the smell is normal and that it is actually working. Think I'll live with the smell.

After spending hours searching for this supposed little hole easy to miss, I called customer service. I found out that it's easy to miss because it doesn't exist!

Here's the correct answer: Once you've replaced the filters, turn the unit back on. Then, with the machine running, press and hold down the on/off power button for about two seconds. The red light will flash and then turn off.

MAKE SURE THAT YOUR CELL(S) ARE CLEAN ... CLOSELY INSPECT TO SEE THAT THERE ARE NO BROKEN IONIZING WIRES (THE SMAAL STAINLESS-STEEL WIRES THAT ARE BETWEEN THE COLLECTOR PLATES). MAKE SURE POWER GOING INTO UNIT TO IS "OFF"!!! ... NOT JUST THE SWITCH ON THE UNIT. THEN TRY THE FOLLOWING: THIS AIR-CLEANER THAS A AIR-FLOW SENSOR THAT SOMETIMES GETS CLOGGED ... IT IS INSIDE THE TOP CONTROL PANEL. THERE SHOULD BE A DIAGRAM UNDER THE CONTROL BOX COVER PLATE TO ASSIST YOU LOCATING THAT SENSOR. MAKE SURE IT IS CLEAN. THE HIGH-VOLTAGE TRANSFORMER BEING BAD USEUALLY WILL SMELL LIKE BURNT WIRING. AND WILL LOOK BURNT. MAKE SURE YOU SEE NO LOSE WIRES ... SOME TIMES THE SPARK-PLUG LOOKING WIRE GOING TO THE CELL(S) CAN BURN OFF ITS CONNECTOR. YOU CAN CHECK THE DOOR SAFETY SWITCH TO MAKE SURE IT IS MAKING CONTACT WHEN HANDLE IS PROPERLY CLOSED. GOOD LUCK ... HOPE YOU HERE THAT ZAPPING SOON ... BY THE WAY ... IF YOU GET A POWER LIT ON ... GIVE THE RETURN-AIR DUCT A SLIGHT BANG ... IF IT IS WORHING IT SHOULD SNAP CRACKLE AND POP FOR A FEW SECONDS. MAKE SURE YOU SEE NOTHING (HAIR?) LYING ACROSS THE PLATES OR IOMIZING WIRES ON EACH CELL IF YOURS HAS TWO. ELECTRIC AIR CLEANERS ARE ONLY GOOD WHEN THEY ARE KEPT CLEAN ... PET HAIR IS A CONSTANT MAITENCE PROBLEM AND CELLS SHOULD BE LEANED EVERY TWO WEEKS. FOR BEST PERFOMANCE. Joe_Rex 40+ years Hvac Contractor (retired)