Mine has a filter screen as well, but all kinds of "crap" gets through anyhow. The most annoying are little pieces of plastic film that go through and clog the exit holes of the top/bottom rotating sprayers. Can't complain though - its going on 14-15 years and still does the job as long as it gets a routine clean-out.
@jmillion: Yes, like the "warm hidey-holes" in my swimming pool pump motor! The thing is black, of course, sitting in the sun, and close to the ground. It started making an awful racket, so I brought it down to my workshop to see if I could fix it. I hadn't gotten much more than the back cover off when out comes an 8-inch long garter snake! Boy, did I jump! Fortunately, all I screamed was "AHHH!" and it only took a moment to grab "Gregory" (as my son has since named "him") with a pair of pliers, run upstairs, and deposit him in the woods.
I put a piece of vectorboard over the vent holes after that.
Squirrels seem to love to chew on vinyl. They've gnawed through a heavy vinyl birdseed container. Far worse was when they gnawed the insulation from the low-voltage wiring to my heat pump, causing continuous compressor start-stop cycling. The compressor wasn't designed for that and failed, necessitating replacement of the entire unit, costing a few thousand dollars.
Needless to say, the current unit has the low-voltage wiring run inside steel-jacketed "Greenfield" tubing.
Good comments, John. Kudos for attributing "debug" properly to Grace Hopper.
My company makes electronic equipment for use throughout the world. The gear used particularly in the more tropical climates is often assailed by various and sundry "vermin". It's often a design consideration; water ingress is one thing, but is it vermin-proof? Ha! Maybe the most unusual incident occurred when we brought a pallet of gear into the factory for rework from the field. A lady opened up the housing of one unit to find a 6" long snake! True, it was dessicated and no threat, but still quite shocking (pun intended). Critters always seem to seek out warm hidey-holes.
I know this is a little off topic, but I heard a story of a grizzly bear getting into a high voltage power line. The story turns out to be true and with a little surfing you can find pictures of a grizzly bear that dug up a high voltage power line. I always wondered if the hum made him think the cable was somehow linked to a bee hive.
Another interesting critter is the ant. When I lived "out in the country", ants swarmed the contactor on my air conditioning unit, rendering it useless. Also got into the telephone junction box outside and disrupted it, too.
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
In a bid to boost the viability of lithium-based electric car batteries, a team at Lawrence Berkeley National Laboratory has developed a chemistry that could possibly double an EV’s driving range while cutting its battery cost in half.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.