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MMD > Archives > April 2007 > 2007.04.30 > 08Prev  Next

Pipe Organ Blower Motor Problem
By John Nolte

Bruce Newman wrote:

> The starter has three terminals for the line voltage.  I connected one
> of the hot leads to L1, the neutral to L2, and the other hot lead to
> L3.  It also has three terminals to connect the three leads that come
> from the blower motor.  T1 and T3 looked larger and heavier duty than
> T2 so I connected the red motor lead to T1, the black motor lead to T3
> and the white motor lead to T2."

In all of the single phase 220v motors I have connected for our shop or
in organs, only two leads are used.  The starter has three poles for
three phase motors.  In the normal wiring of a motor, the cord or other
wiring from the power supply would contain two hot leads and a
grounding wire (green).  The neutral wire (white) is not used.

When the motor has several leads, usually two of them are connected
together.  Which two will depend on whether the motor is running on low
voltage (110) or high voltage (220).  There should be a wiring diagram
with the motor.  The nameplate should also tell you if the motor is
dual voltage.  Check with Bobco, an electrician, or a motor shop to get
the assistance you need.

Motors, like transistors, diodes, and other electric/electronic
components operate on the theory that they are built with special kinds
of smoke.  If you let the smoke out, they don't work anymore.

In electric ranges and clothes dryers, there is often a 4 wire
connection because some functions operate on 110v and others on 220v.

John M. Nolte - Nolte Organ Building & Supply, Inc.
Milwaukee, Wisconsin

(Message sent Mon 30 Apr 2007, 13:16:09 GMT, from time zone GMT.)

Key Words in Subject:  Blower, Motor, Organ, Pipe, Problem

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