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Today I went to a Rosieres integrated washer / dryer. The brushes were worn out but new ones failed to get it working. It looked like the motor TOC had gone OC and there looked to be a hot spot on the commutator. It was a CESET motor but of an unusual shape. I brought the motor home to see if I had a suitable secondhand one or an armature + TOC. I didn’t have the right shape motor but it looked like a Zanussi armature might fit. I actually had the motor bolted back together before I realised the Zanussi armature would not do as it’s front bearing is in a different position on the shaft. It looked like I had wasted my time drilling out rivets, changing the TOC etc but I thought I might as well try the motor with its original armature. I was going to rig up a light bulb in series with the motor to limit its speed but then remembered the motor speed controller I recently brought back from my parents house. I made this for my father in about 1975 when he only had a single speed electric drill. It is a simple circuit using a triac and a few other bits in a box with an on/off switch, a speed control knob and a 13 amp socket. I plugged in a lamp to check it still worked and it does! I then held the motor in the vice and connnected it to the controller. The setup worked a treat and confirmed that the motor is OK. Little did I know 35 years ago that I was building a device that I could use as a washing machine motor tester all these years later. 🙂
Re: Motor Tester
I have a rig somewhere to check ariston washer motors/modules from 15 years or so ago.
Something tells me I won’t be looking for it any time soon. 8)
Steve
Re: Motor Tester
I made a test rig using an old hotpoint module, put it all in a project box with switches to set the speeds, it works a treat.
Re: Motor Tester
Phidom wrote: It is a simple circuit using a triac and a few other bits in a box with an on/off switch, a speed control knob and a 13 amp socket. I plugged in a lamp to check it still worked and it does! I then held the motor in the vice and connnected it to the controller.
Got a photo Phil? But I do warn you .. it sounds so good I may copy it for use down here 😀
George
Re: Motor Tester
Gazman wrote
I made a test rig using an old hotpoint module, put it all in a project box with switches to set the speeds, it works a treat
Even when landing?? 😆
TC
Re: Motor Tester
Allsorts wrote:
Got a photo Phil? But I do warn you .. it sounds so good I may copy it for use down here 😀
George
I opened it up and there’s a triac, a diode, 0.1mf capacitor, resistor, 500k pot. I think the reason for 3 resistors in parallel was to up the wattage, it was probably cheaper to buy 3 one watt than one 3 watt wirewound. I probably should replace the capacitor with a modern X rated type as it may have gone leaky with age.
Re: Motor Tester
Thanks Phil… I’ll have a close look at that and see if I can’t use this in some way…
Just out of interest, how were you linking-up the motor to this?
George
Re: Motor Tester
Use a wire link to join one brush terminal to one field coil terminal. The other brush terminal and the other field coil terminal can go to live & neutral, either way round. Obviously you also connect the plug earth pin to the motor earth terminal . In this case the motor TOC was in series with one of the brushes but not all motors are wired like that. You therefore have to make sure you have identified the field coil wires correctly or you might be connecting to the TOC by mistake!
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