Honeywell HPA300 Air Filter Failure скачать в хорошем качестве

Honeywell HPA300 Air Filter Failure

This is a Honeywell HPA300 air filter that I've used in my office at work for quite a few years. It runs continuously. Aside from filter changes a few times per year, it has required no maintenance and just plain works. It does seem to make a difference in the air quality in the room, I seemed to get sick less often after installing this, particularly during the heavy cold seasons when there's a lot of contaminants in the air. A few days ago, I came in to work and the unit was off. I turned it back on to be greeted with some outrageous noises. It sounded like the blade was scraping against the housing. I was hoping it had just come loose from the shaft, but unfortunately that was not the case. I attempted to open it up for repairs, and was greeted with stupid and dumb security screws. I have a set of security bits, but the screws were so deep down into the unit and the channel was too narrow to fit a bit driver in that I was unable to use the bits to remove them. I was able to get a few of them with a standard hex style tool, but not all; I guess the quality control of the heads of the screws is extremely poor. The screws are stainless and not able to be reasonably drilled out, so I ended up just tearing the unit apart out of sheer aggravation at the design. The failure was obvious; the 4 plastic studs that the motor secured to simply deteriorated with time. The deterioration was so bad that each of the 4 crumbled apart, releasing the motor and causing the blower wheel to scrape against the housing. I don't think is able to be repaired. I don't know why Honeywell was so set on keeping people from disassembling the housing of the unit, other than this plastic deteriorating, it doesn't seem like there was anything that would fail inside. The motor seems to be of very good quality, there was still plenty of lubrication left in the bearings at the time of failure. The motor seems like it would have continued to run for years without any trouble. Quite a shame such cheesy plastic was used, especially considering the price of these units when they were new.