My WISE chucked up a #3 error code the opposite day, so I contacted Robin at WD to rearrange a repair… after which the satan on my shoulder steered I’ve a go myself
. I’ve by no means seen a WISE ripped aside to this diploma, so I assumed I would share it within the hopes of demystifying our little magic bins.
(Machine is an ex-demo whose guarantee died with the final stegosaurus, so there’s completely no hazard; if yours remains to be in guarantee don’t open it!)
Error 3 has to do with the self-test not finishing, apparently, and certainly one of two issues could possibly be taking place:
a) the limiter magnets aren’t catching the top(s) of the cycle, and/or
b) the self-test is timing out as a result of the motor is simply too gradual.
Listed here are the magnets in query – they connect with the “push” and “pull” terminals on the mainboard:
They’re working correctly. That leaves b): motor too gradual. To be sincere, it has been slowing down for months, and it could have dipped slightly below the self-test timeout threshold.
First and best take a look at is for the facility brick. Must be chucking out 15V DC, and my multimeter learn 15.19 V. Energy provide is okay, so the motor is seeing the required voltage (12V, oddly – why a 15 V provide? Perhaps the motor is being overclocked). Subsequent step is to lubricate all of the transferring elements in case the motor is being slowed down by friction. That is the place it will get gory.
Subframe and connections eliminated, then the end-cap from the non-motor finish, and the worm drive and puller head comes out:
There was fairly a little bit of crud within the grooves of the worm drive, so I took the puller off and blasted it with some acetone, together with the within of the puller. Fast dusting of WD40 to each, and now the worm gear actually falls by way of the puller underneath gravity with nearly no resistance. That leaves the motor and gearbox… sigh:
That is what it appeared like after cleansing; the gears had been all caked in outdated grease and the casing had loads of steel swarf in it. Took all of the gears off their pegs and cleaned all the things, adopted by some black PTFE dry lube. Little bit of WD40 contained in the motor, too.
(In case, like me, you are tempted to alter the motor for a sooner one, listed here are the main points:
It is 77 mm lengthy, 37 mm in diameter and the finding gap pitch is one inch. It is 4500 rpm earlier than gearing, so a 5000 rpm motor – if you could find one with that worm spline – will give a ten% pace improve.)
Proper – all the things that may be cleaned and lubed has been cleaned and lubed, so let’s put the sucker again collectively and pray… plug in, change on… and the puller flies backward sooner than it did after I bought it. Drawback should have been the clogged-up gearbox.
This repair price me zero kilos and possibly an hour’s time; I’ve completely no thought if the WISE may be mounted by any vendor over right here, however I guess the price is extortionate even when they may. (And if they cannot, it goes again to the US – extra time and more cash.)
