Introduction
Sugar, moisture and long-term neglect can cement the blade in place and overheat the motor of a coffee grinder. By opening the housing, cleaning every component, checking the safety switch and inspecting the carbon brushes you can bring the grinder back to full speed and avoid an expensive replacement.
Ce dont vous avez besoin
-
Étape 1 Disconnect power and check blade rotation
-
Spin the blade by hand to confirm it turns freely.
Demander à FixBot
-
-
Étape 2 Remove decorative and main housing screws
-
Undo the two external screws, including any hidden beneath rubber feet.
-
-
Étape 3 Separate housing and release cord clamp
-
Slide out both springs and keep them paired for later.
-
Remove the metal strain-relief plate so the power cord can be freed.
-
-
Étape 4 Unscrew blade and extract motor
-
Lock the rotor through the rear slot to stop it turning.
-
Turn the blade counter-clockwise until it comes off the shaft.
-
Lift the motor assembly out of the housing once the blade is removed.
-
-
Étape 5 Clean the housing thoroughly
-
Brush loose residue from the shell and remove it with a vacuum cleaner.
-
Wash plastic parts in warm water with mild detergent and rinse well.
-
-
Étape 6 Clean motor and switches
-
Dust the motor, main switch and lid safety interlock with a dry brush.
-
Blow the components with compressed air to clear hidden particles.
-
-
Étape 7 Inspect and replace carbon brushes
-
Pry the metal brush cap open gently to avoid snapping the small tab.
-
Slide each carbon brush out of its holder and check the remaining length.
-
Install two new brushes if either one is worn beyond its limit.
-
Press the cap shut and bend the tab back to secure the holder.
-
-
Étape 8 Clean switch contact edges
-
Scrape residue from the switch edges with a fingernail so the contacts move freely.
-
-
Étape 9 Lubricate plastic pivot surfaces
-
Apply a drop of light oil where plastic parts slide against each other.
-
-
Étape 10 Seat lower housing and wiring
-
Place the power cord and strain relief back into their recesses in the lower shell.
-
Slide the main switch into its slot with the soldered leads facing inward.
-
-
Étape 11 Secure both switches in the shell
-
Press the lid interlock switch into the vertical slot until the clips lock.
-
-
Étape 12 Reinstall gasket assembly
-
Insert the two-tabbed plastic collar, rotate it 180° to lock in the housing.
-
Stack the felt ring and rubber gasket inside the collar to seal the motor chamber.
-
-
Étape 13 Install motor and springs
-
Align the motor with the blade opening and cable groove then lower it into place.
-
Compress the two springs, hold the motor down and insert the mounting screws.
-
Tighten the screws while maintaining pressure to keep the motor seated.
-
-
Étape 14 Refit decorative caps and blade
-
Snap the decorative caps back over the screw heads.
-
Thread the blade onto the shaft by hand; it will self-tighten when the grinder starts.
-
-
Étape 15 Test the grinder
-
Plug the grinder in and run it briefly to verify a high-pitched, healthy sound.
-
Regularly brushing out coffee dust and keeping wet ingredients out of the grinder will stop future jams and overheating. Store the small springs, washers and caps safely so future maintenance remains simple, and always unplug before opening the housing.
