optima
Well-known member
Currently Re-spraying my old but new 9545. I am just curious to find out what the single violet coloured wire attached to the motor is for.
Hotpoint 9545 Electronic 1200 De Luxe
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optima
Well-known member
9545
Could it possibly be a maximum 1000 spin motor with a conversion so to be able to spin up to 1200 rpm. Only guessing.
Could it possibly be a maximum 1000 spin motor with a conversion so to be able to spin up to 1200 rpm. Only guessing.
keymatic3203
Well-known member
yes Craig
it's a centre tapping on the field coils, so the timer bypasses one of the sets of coils which has the effect of increasing the motor speed though reducing the torque, so an ideal way to achieve the high spin speeds, when the vast proportion of the water and therefore loading on the motor has been removed, though whilst doing this, as half the coils have been taken out of the circuit, the resistance (impedance) is reduced so the current goes up, which in turn causes the motor to run hotter, therefore why it can only run at this speed for 20 seconds.
The classic hoover 1100s use this method to increase the spin speed from 800 to 1100, it's the switching of this motor circuit that happens when the speed drops before accelerating to 1100, this switching happens on most high speed machines these days but with electronics it's almost undetectable.
sorry I found myself waffling on longer than I intended, all the best with your restoration
Mathew
it's a centre tapping on the field coils, so the timer bypasses one of the sets of coils which has the effect of increasing the motor speed though reducing the torque, so an ideal way to achieve the high spin speeds, when the vast proportion of the water and therefore loading on the motor has been removed, though whilst doing this, as half the coils have been taken out of the circuit, the resistance (impedance) is reduced so the current goes up, which in turn causes the motor to run hotter, therefore why it can only run at this speed for 20 seconds.
The classic hoover 1100s use this method to increase the spin speed from 800 to 1100, it's the switching of this motor circuit that happens when the speed drops before accelerating to 1100, this switching happens on most high speed machines these days but with electronics it's almost undetectable.
sorry I found myself waffling on longer than I intended, all the best with your restoration
Mathew
optima
Well-known member
9545
Thank you Mathew
Thank you Mathew
keymatic3203
Well-known member
Now I see the machine
I think I have one somewhere in my garage, have the matching dryer too, it needs drum bearings so have just been put into the in many years to come area.
mathew
I think I have one somewhere in my garage, have the matching dryer too, it needs drum bearings so have just been put into the in many years to come area.
mathew
optima
Well-known member
9545
All back together after the re-spray
All back together after the re-spray
nickuk
Well-known member
Wow
What a beauty; nice work!
Since I'm in Essex, `well jel'!
What a beauty; nice work!
Since I'm in Essex, `well jel'!
optima
Well-known member
9545
Rinses with 500 rpm Spins & final 700 & 1200 rpm Spin. A unique sounding Motor.
Rinses with 500 rpm Spins & final 700 & 1200 rpm Spin. A unique sounding Motor.
