Does anyone know offhand what voltage etc the suds pump motor are on the Colchester master 2500 ? I want to use the coolant but the machine is backed up tight to a wall and I can't see in to the motor spec plate. Its three phase as I can see that from the wiring.
Someone said it might be possible to run it on single phase if I connect a capacitor between one of the phases and earth or something like that, anyone know anything about this ? it would save me some money if I had to buy a new motor or vfd.
Mine is different to yours I think brewdexta, mine is later square head master, and from the little I can see through the suds pan the motor is finned and has the nameplate on top , where I can't read it of course. What hp are these pumps ?
yeah but it means wrestling the machine out from the wall so I only want to do it once, my back aches remembering the last time I did it. if the motor is so tiny I reckon a vfd would be very cheap or I can do the trick that's on brewdextas link. I want to get it working, I was turning a bit of 1" stainless bar the other day and it was getting very hot.
the only way i can think of is use the capacitor trick,connect it up and feel the motor body for heat.it would get hot pretty quickly if its a 400v motor.my guess is it probably is 400v though.i think a vfd wouldnt be that cheap,not a 230 - 400 one.you could use a very small transformer to step up the voltage yourself,then use the capacitor as brewd says
working out the horse power of this motor , V*I*eff (.82 for 82%) / 746
220 * .22 * .82 / 746 =0.053 hp, is this per phase though ? do I multiply by three ? it seems very small, but it does say it only pumps 2 gallons a minute. is that .22amps a mistake ?
According to my maths (never a strong point) its .05hp, which is probably all it needs to be to lift 2 gallons a minute. a cheapo Chinese vfd might be the job, someone offered me one a while ago for free but I refused it as it was only 1/4hp and I couldn't think of a use for it.