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Problem possible cause solution – Grindmaster 115 User Manual

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115 & 250 Series Coffee Grinders

Loud grating noise.

Rumbling noise.

Chattering or buzzing noise.

Loud vibration noise during
grinding when Grind Selector™
is not activated.

Grind Selector™ fails to
activate.

• Burrs are touching each other on

fine grind setting.

• Thrust bearing rotating inside

flange bearing.

• Solenoid may have failed to seat

or close fully.

• Cotter pin in the thumb screw

linkage may be vibrating.

• Wiring harness loose.

• Solenoid has burned out.

• Readjust fine grind setting, see “To

Adjust Fine Grind” section.

• Replace thrust bearing and shear

cap.

• Check alignment of solenoid and

shift arm.

• Also check the tightness of the

solenoid mounting screws.

• Attempt to spread flanges of cotter

pin or replace cotter pin.

• WITH MACHINE UNPLUGGED,

check wiring harness connections to
see if they are secure on the timer
terminals.

• Replace solenoid.

If you still need help, call our Service Department at (800) 568-5715 (Monday through Friday 8am-6pm EST)
or an authorized service center in your area. Please have the model and serial number ready so that accu-
rate information can be given.

Prior authorization must be obtained from Grindmaster Corporation’s Technical Services Department for all
warranty claims.

Troubleshooting Guide for Grind Selector™ Mechanism
(Models 115AB and 250AB)

The following procedures must be performed by a qualified service technician.

PROBLEM

POSSIBLE CAUSE

SOLUTION