Question about Hobart HL200-1STD Mixer

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Hobart Legacy HL120

Problem with speed control does not change sped

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I haven't ever worked on these units. But from looking at the parts catalog, (pg 4) and considering your failure, I would suspect you have a bad speed control. And being that it is a potentiometer, it's pretty likely to be the cause. (Item #1)$File/F43101%20Rev%20A_lk.pdf

I would ask Hobart, but I doubt any special tools would be required. (NO splicing, crimping, or soldering)

I hope this helps - Mike

Posted on May 12, 2008


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Speed Control
The speed control of the mixer is attained through the use of a governor assembly mounted at the rear of the control plate assembly.
The electrical circuit is made and broken by the action of the fly ball governor revolving against the control plate.
When the switch lever is moved to an ON position, the position of the control plate with respect to the governor is changed by the action of the switch lever.
Thus, when the control plate is set close to the governor, a relatively low speed of the motor causes the governor to make or break the mixer’s electrical circuit through the control plate.
When the control plate is set farther away, a greater motor speed is required before the governor starts breaking the circuit.
The action of the governor is such that the speed of the motor will remain constant for a given setting of the control plate within certain loads.
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NOTE: The triac regulates the power the motor sees depending on control board contacts.
A device called a triac is a part of the phase control circuit.
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particular speed setting, one or both contacts open, which cuts back on the voltage the motor sees, thus slowing it up.
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This is always accomplished through the triac.
The control plate contacts control the triac, and in turn, controls the amount of power supplied to the motor.

The control Plate for your mixer is PN

If your not good with tools / meters or tedious repairs do NOT attempt this yourself.
The service manual for your mixer can be found here

and is:

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