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Zero (Edison Electric) Box Fan Help


Daniel Herczeg
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The screw holding the blades keeps slipping. Any ideas? I'm at a complete dead end on what to do.

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DANIEL THERE ARE SOM MANY GENERATIONS, SIZES AND STYLES OF THESE FANS, CAN YOU SHOW US A PHOT? PLUS WHEN YOU SAY (SLIPPING) DO YOU MEAN THE SHAFT SPINS AND THE BLADES DONT? OR THEY WOBBLE OR GO SLOWER? THERE ARE A LOT OF TRICKS DEPENDING ON THE SET SCREW AND BLADE /SHAFT STYLE 

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What I mean by slipping is that the axle spins, but the blades lag, and are only pushed along by the friction between the axle and the rotor, but the screw does not hold it in place. The fan is a McGraw Edison Electric "Zero" box fan, model 123X.

WIN_20240205_15_59_11_Pro.jpg

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Go to ace hardware & get a new set screw , if your threads are good in the blade hub . If they are not then you’ll need to get creative with thread locker type stuff. 

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DANIEL, GOT IT... FIRST THINGS FIRST YOUR BLADES LOOK LIKE THEY ARE ON BACKWARDS. THE V-SHAPED MOUNT SHOULD BE TO THE REAR FACING THE MOTOR. THE FRONT OF THE BLADE SHOULD BE SMOOTH WITH JUST RIVETS FACING OUT.  YOUR SHAFT SHOULD HAVE EITHER AN INDENTATION IN IT ALONG ONE SIDE OF THE SHAFT (SO THAT IT ISNT ROUND ON ALL SIDES)  , OR A ROUND "HOLE" THAT DOES NOT GO ALL THE WAY THROUGH. THE SET SCREW SHOULD BE OVER THE OVER THE FLATTENED INDENTATION ON THE SHAFT OR OVER THE "HOLE"  SO IT HAS A PLACE TO SET-DOWN AND NOT BE ON THE ROUNDED PORTION OF THE SHAFT . CHECK THAT OUT FOR STARTERS

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The blades are pitched correctly. Whatever problem it had seems to have gone away, it's just a bit touchy at times, especially at high speeds for prolonged times.

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That one certainly is similar to mine. I wouldn't want to get another one due to the fact that the bottom of the inside is so difficult to clean, though. When I first got mine, I actually had to clean the housing in my bathtub due to how much filth had accumulated.

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HOW ARE YOU MAKING OUT WITH YOUR LOOSE BLADE SCREW ? WE HAVE "HELPERS"  IN CERTAIN AREAS WHO ARE HAPPY TO HELP OUT SOMEONE WHO ISNT TOO FAR AWAY 

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I have temporarily haluted efforts on the ZERO box fan, as I am assisting a friend outside of the association fix the cage, cord, and switch of his desk fan.

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