Question about Ecoquest Fresh Air Air Purifier

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How to remove the fan blade ?

We have had the unit for several years and the fan is getting slow to restart after the machine is off. It runs fine after it gets to going, so think the fan may need to be oiled but we are not sure how to get the fan off without damaging it. Any ideas?

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080204 FixUp EQ air blog remarks

To remove fan blade you need to obtain a thin strong probe, such as a Scratch Awl for wood, that will fit without binding, into the cruciform spaces around the plastic collar. Gently insert into space of plastic collar and lever against the spring metal retaining clamp; getting started may require a bit of force, so be careful to adjust and gauge your efforts. The process is to move clamp in small increments, one side then the other, up the collar until clamp is free to remove.

The collar will still be tight, so if you can form your hands into a gear puller form with your finger tips between the fan blades under to the solid portion of the fan ring, pushing thumbs against the Spindle and lifting in as quick a jerk as you can manage to get it moving. Once moving it should be removed easily enough.

The electric motors have two bearing surfaces, one front one back. Both need to be addressed.

I like Breakfree or similar that acts like minor solvent / major lubricator with good thermal properties. The solvent aspect helps clean out unwanted particles and/or old dried lube. The new lubrication is heavy enough to hold up for at least a year; so yearly checking should be scheduled.

On other brands with heavier motors, I've tried greases when I've stripped down the motors even further. So far I've discovered a heavier lube can be hard on start up and need more time at slower speeds until unit warms up.

Something like WD40 is good for penetration and flushing, but IMO too light for sustained duty. There is a lot of spinning and heat over a year's time.

I just torn down a couple of F1's. They've been doing well for a couple of years. But with all air filters/ purifiers, they REQUIRE periodic maintenance. [Had my biggest laugh reading complaints about Oreck air filters; people NEVER cleaned them and complained when they failed.]
Yes, all these small electrical motors will eventually need lubrication, I recommend before 2 years, as one of mine had a frozen (lack of lube) motor in that time.

If you get into the back to try to get at the rear bearing, you may find that you might be considering a more thorough cleaning (I noticed a bit of corrosion). If you do and if that means taking more stuff apart to clean, be well advised of the time involved and the number of wires needing displacement, especially the electronic wire connectors at the front to the circuit board.
So, get a digital camera and take clear pictures (and check them!) Before and During take apart as well as a couple of paper notes about wire runs and placement. I have even used paint pens to letter/number info to the unit.

Posted on Feb 05, 2008

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See the other question/answer to fan removal - motor lube.

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