Grindmaster 115 - Manual (Page 10)

Page 9 115 & 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