[M00se]

can i just plug it directly to the mains the same as i would with an induction motor ? is it as easy as putting mains voltage to the brush terminals and letting it rock and roll ?

[M00se]

its measuring 0.56 on the 20Mohm scale and all over the show when the rotor turns a little, then settles back down.

[M00se]

on the smae 9v meter, on 20ohms scale, the copper Stator / rotor / whatever its called, to the case, measures 0.5ohms when the rotor is still, and spikes up to about 4 ohms when i move the rotor a bit. this with both brushes physically removed from the motor housing.

thanks in advance. If I cant suss it soon the mrs is going to buy a new one 🙁

[M00se]

Both brushes read about 0.5 on the 20M ohm scale between the terminal and the case. Nothing else has any reading.

[M00se]

electrofix wrote:motor wires
2 wires armature
2 wires tachometer
2 or 3 wires field coil

test with meter on a high ohms scale ( at least 2M ohm) one probe on the casing the other then touch to each motor connection

if you disconnect it does it trip ?

Dave

i had tested every wire to the case in continuity mode, and nothing, i will re test. I have also tested every single wire to the chassis and there is nothing.
I will report back shortly.

if i disconnect the motor, the machine doesnt trip, but quickly turns off, sometimes showing a PE message. Also if i remember rightly, with no motor, the 226v is not present between the two contacts of the safety interlock. The connector for the interlock has 4 wires 1 common neutral, 1 for the drain pump 1 for the interlock and one grey wone which ive followed down to the motor.

[M00se]

electrofix wrote:whats going on is you have a leak to earth in one component
the most likley is the heater followed by the motor

when you measure any component like the heater it does not matter that it has a continuity what matters is it resistance to earth. thats what blows you trip

the trip measures the current entering your house by the live wire and compares it to the current leaving. If it differs by 0.03 amps it will blow the trip. whats happening is some of the current entering your machine by the live wire is not leaving by the neutral wire but leaking to earth

dave

Having tested with the heating element completely disconnected, and the fact that this happens right at the start of the cycle, like the moment you press go with the door shut, is it fair to rule out the heating element?

is there a way i can test the motor with just a multimeter?
ive tested the resistance across the temp probe on the back bearing of the motor, but it has about 6 wires which i cant work out what they do, it has 2 small gauge wires for what i assume to be the temp protection on the rear bearing, two wires for the brushes, and 4 or 6 (i cant remember right now) that are a mystery. It has windings where you would expect to see magnets in a motor (ie around the stator on the outer case) I assume the unknow wires are for this, ive not seen this type of motor before.

thanks for your help

[M00se]

electrofix wrote:when you tried the machine with the heater disconnected did you have all wires disconnected or just 1

Dave

I disconnected the two power wires, the earth was still connected.

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