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MMD > Archives > March 2013 > 2013.03.20 > 05Prev  Next

Seeburg L Motor Power
By Craig Smith

[ Robbie remarked in 130318 MMDigest:

>[ Install a transformer or autotransformer to reduce the applied
>[ voltage to 5/6 x 110 = 93 volts.  Increase the diameter of the
>[ motor pulley if more airflow is needed.  If the temperature of the
>[ motor housing rises above 35 or 40 deg. C. install a small fan.

Robbie,  You might want to follow up with Giorgio Farabegoli about
your advice regarding his Seeburg L problem.  Changing the voltage to
93 volts won't do anything useful.  A 5/6 ratio transformer will reduce
the 220 volts to about 185 volts.  That will surely fry that motor.

He needs an isolation transformer with a 2:1 winding to reduce the
voltage from 220 volts to 110 volts.  Then he needs a larger pulley
to get the drive RPM back up by a ratio of 6:5.  A small fan might be
a good idea if the motor gets hotter than normal.  On the other hand,
if he were to use that 5/6 transformer on the 220 volts, he'll need
a really big fan -- to clear out the smoke!

It sounds like he already knows about an appropriate device to alter
the voltage so I think what he really wants to know is how large
a device does he need.  The horsepower or current draw of the motor
for the "L" is what he needs to know so he can buy the right size

Craig Smith
Upstate New York

(Message sent Wed 20 Mar 2013, 21:56:44 GMT, from time zone GMT-0400.)

Key Words in Subject:  L, Motor, Power, Seeburg

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