FETCO Grinder Series

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FETCO Grinder Series

• Settings, Maintenance
• Troubleshooting

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(No Transcript)
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GRINDER FLOW LOGIC

• Hopper System
• Delivery of beans from the hopper to the grind
  chamber
• Grind Chamber
• Burrs Fixed and Moving
• Flow Guides
• Discharge Chute

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HOPPER SYSTEM

• It is important to keep this area clean so that
  the hoppers sit properly. Remove the four screws,
  being careful not to drop them into the grind
  chamber. This manifold separates into two pieces
  so that it can be easily cleaned (washed and
  dried).

Manifold with bean hoppers removed
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DELIVERY OF BEANS/GRIND CHAMBER

• You can clearly see the motor shaft and auger
  spring, the areas around this shaft will build up
  with oil and the coffee fines, reducing the flow
  of the beans.

Manifold removed-looking down into grind chamber
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BURRS

• Even though this grinder is fairly clean you can
  see the beginning of build up in the critical
  areas. Looking straight at the shaft you can see
  the auger spring, with the outward end inserted
  into the hole in the shaft. You can also see the
  shaft pin, when the grinder has had several or
  severe jams, these pins can become bent or broken
  and then will not grip the rotor assemble,
  causing the moving burr not to turn.

First style motor, moving burr removed-fixed
burr, auger spring shaft pin
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BURRS
Current motor-fixed burr, flow guide grind
chamber

• The new motor and grind chamber design should
  allow for easier movement, less restricted areas
  to build up blockage reducing jams and prolonging
  the motor life.

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FLOW GUIDE

• Original flow guide replacements, to reduce
  static electricity and flying chaff.

Flow guide for first type motor
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DISCHARGE CHUTE

• Compare the size of this final opening to the
  very small screw holes on top and bottom, you can
  see why oil and grinds build up in this area.

Coffee outlet-first type motor-with flow guide in
place
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GRINDER MECHANICS

• Switches
• Grind Adjustment
• Grind Chamber
• Auger spring
• Jam protection
• Timer-programming

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SWITCHES

• Switches get sticky during daily use, a stuck
  switch can cause malfunctions of grinder
  operations. With the grinder unplugged they can
  be cleaned with a degreaser type spray (409,
  Windex etc.) dry well before plugging the machine
  in.
• Place a slotted screw driver in large grove,
  place wrench on nut and turn counter clockwise to
  loosen the nut. It is especially important to
  adjust the grind screw with the grinder running,
  to avoid creating a jam with any beans that maybe
  left in the grind chamber. Once you reach the
  desired grind tighten the nut while holding the
  screw in position with your slotted screw driver.

Portion switches Power switch
Grind particle size adjusting nut
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GRIND ADJUSTMENT
Consult users guide for grind adjustment
instructions.
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GRIND CHAMBER

• This photo gives a very clear look at how small
  the areas of the grind chamber are and how over a
  period of time the space for the beans/grinds can
  become plugged.

First style grind chamber, shaft auger pin
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AUGER SPRING
Both burrs removed.
Grind chamber with auger spring in place.
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JAM PROTECTION

• Unplug the grinder-either at the wall or on the
  back of the machine
• Remove the hoppers-clean out the manifold-remove
  the jam
• Plug the grinder in-by removing the power this
  resets the motor circuit protection
• Call a service tech if the jam is to severe

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Spare fuse
Active fuse
Control board-control portion settings, motor
delay grinder type.
Located in front bottom foot of grinder.
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TIMER PROGRAMMING
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STARTING TIMER SETTINGS
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MAINTENANCE CLEANING

• Outside of grinder
• Bean hoppers
• Guillotine
• Burr Cleaning
• PM Maintenance by Service Technician

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MAINTENANCE -- OUTSIDE OF GRINDER

• Wipe outside of grinder with a damp cloth to keep
  surfaces and buttons clean and free from oily
  build-up.

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MAINTENANCE BEAN HOPPERS

• Keeping the inside of the hopper clean as well as
  the guillotine underneath is critical, at least
  on a weekly basis. It is just as important that
  this part be completely dry prior to replacing
  it.

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MAINTENANCE -- GUILLOTINE

• The guillotine should be cleaned by a service
  technician only with a vacuum.

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OPERATOR WEEKLYBURR CLEANING

• From the time that the grinder is new or has just
  been professionally cleaned
• Run one of the commercial grinder cleaning
  products through the burrs by running the grinder
• Run uncooked whole grain rice through the grinder
  to remove oils from the burrs
• Wipe the outlet area down or use a vacuum in that
  area

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PMS PERFORMED BY TECHNICIAN

• Frequency-6 to 12 months
• Removing the manifold
• Removing the cover for the grinding chamber
• Removing the rotor screw and washer
• Removing the rotor assemble (includes moving
  burr)
• Removing auger spring
• Checking fixed burr for wear and damage
• Checking motor shaft pin
• Through cleaning of grinding chamber and parts

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TROUBLE SHOOTING GRINDERS

• Jam prevention
• Jam troubleshooting
• Inconsistent Portions-Possible Causes
• When to change grinding burrs
• Contact information

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JAM PREVENTION

• Do not turn the power off or stop the machine in
  the middle of a grind-wait until it finishes on
  its own
• Keep the hoppers and guillotine on the hopper
  clean and free of coffee oil
• Increase the delay (time that the grinder
  continues to run after the guillotine closes) to
  clear the grind chamber-DLY in programming

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JAM TROUBLESHOOTING

• Unplug the grinder
• Remove the hoppers
• Clean out the manifold-remove jam if possible
• Plug the grinder back in- this resets the circuit
  protection on the motor
• If still jammed call a service tech

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POSSIBLE CAUSES OF VARYING PORTIONS

• Dirty hoppers or guillotine
• Changing coffee or blend spec
• Oil and fines built up in the grind
  chamber-discharge chute or burrs
• Worn burrs (depending on many factors-grind size,
  coffee use etc.-change burrs after approximately
  10,000 pounds of use)
• Mechanical wear or failure

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WHO TO CONTACT FOR HELP

• FETCO Technical Support Department
• 1-800-338-2699 0r 847-719-3000
• www.fetco.com