Baratza Maestro Installation and user guide

How to: Motor Polarity Check/Change
Starbucks Barista (Baratza Version), Maestro, Maestro Plus, Virtuoso, Preciso, Encore, Virtuoso+
Time: 10 min
Difculty: Easy
Tools/supplies: Flat head screwdriver. T10 Driver. Phillips Driver.
Parts: n/a
Additional Resources: Case Removal. Motor Replacement.
*** Unplug the grinder from power supply ***
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ver. 1.0
Remove the case using our case removal guide.
Cone Burr
CORRECT
POLARITY
REVERSE
POLARITY
Cone Burr Spins
Clockwise
Cone Burr Spins
Counter-Clockwise
To check motor polarity, observe
the cone burr spinning under power.

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Pg. 2
Lift the safety interlock
switch off its posts.
Remove the 3 screws
securing the gearbox/
motor assembly to the
chassis.
*These screws may be
Phillips, or Torx size 10*
Unplug the motor and
lift the gearbox/motor
assembly from the
chassis.
Unplug this

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Pg. 3
Remove the spade clips
from the bottom of the
motor and re-install
them – ensuring that
the red wire secures to
the terminal with the red
marking/excess white
material.
Black wire
connects here
Red wire
connects here
Set the gearbox housing/
motor assembly back
into the chassis. Plug in
the motor
Secure the three screws
which mount the parts
together.

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Pg. 4
Return the safety
interlock switch to its
posts, ensuring that the
actuator faces inward.
Re-install the case and return the unit to operation.
If you have any questions
or encounter issues with
this guide, contact
[e-mail]