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E80 GbW Grinder & M5 Puqpress Operating Procedure

E80 GbW Grinder & M5 Puqpress Operating Procedure

Owned by Isabella Runge (Unlicensed)
Last updated: Sept 19, 2023
10 min read

 

 

Mahlkönig E80 GbW Grinder

The grinder is equipped with the grind-by-weight technology (GbW) for dosing via weight control in real time.

Puqpress M5 designed for E80 GbW

 

 

 

 

 

E80 Parts Diagram

 

 

  1. Bean hopper (with lid)

  2. Bean hopper intake

  3. Controller

  4. Grinding degree lock

  5. On/Off switch

  6. Release button (Thermal overcurrent circuit-breaker)

  7. Power cable

  8. Screw for adjusting the portafilter support

  9. (left and right), 2×

  10. Load cell cover

  11. Drip tray

  12. Portafilter support

  13. Portafilter intake/basket holder

  14. Spout

  15. Display

  16. Grinding degree slider

  17. Grinding degree scale

  18. Clip for the type of bean used

  1. Sliding valve

  2. Locking screw for the bean container

  1. Spout guide

 

  1. Lower button

  2. Upper button

  1. Rescue button

  1. Locking screws for grinder lid

  2. Lock/Unlock grinder lid

 

  1. Grinder lid

  2. Screws for fixed grinder discs

  3. Screws for rotating grinding discs

  4. Rotating grinding disc

  5. Locking screws for fixed disc flange

  6. Grinding disc carrier

  7. Fixed grinding disc

  8. Fixed disc flange

  1. Flapper (Clump Crusher)

  1. Locking tool for grinding disc

  2. Removal tool for grinding disc

  1. Adjustment ring lock

  2. Adjustment ring

  3. Adjustment ring marker

  1. Vernier scale

  2. Zero adjustment of grinding disc

  3. Intermediate plate

  4. Intermediate plate marker

Operations

WARNING: Do not collapse the portafilters on the portafilter support. This support has scales imbedded and collapsing can damage them.

Detecting the portafilters/filter baskets

  1. Call the “Portafilter Management” submenu. Select “Add Portafilter” and the prompt “Please insert portafilter” will appear on the display.

  1. Place the portafilter into the portafilter support and release. If the weight of the portafilter appears on a green background on the display, it has been registered and you can return to the submenu. If the warning ‘PF scan failed’ appears on the display, return to submenu and follow instructions again.

Assigning a recipe

  • You can use the parameters Weight-based and Time-based to define the desired grinding mode, which is then automatically executed by the grinder

  1. Turn the controller to select the “Edit Recipes” menu item and confirm your selection by pressing the controller.

  1. Turn the controller to select an existing recipe and confirm your selection by pressing the controller.

  1. Scroll through and confirm the recipe before selecting ‘PF Allocation’.

  1. Select your desired portafilter and confirm by pressing the lower button (Tick)

 

 

Setting or changing the grinding weight/grind time

  1. Select the desired recipe by turning the controller as stated in “Assigning a recipe” above.

  2. Press the lower button. The set grinding weight/times will flash.

  3. Turn the controller to set the desired grinding weight/time.

  4. Confirm the set grinding time by pressing the upper button (Tick symbol) or discard the setting by pressing the lower button (X symbol)

NOTE: If you do not make any settings for more than 4 minutes, the changing of the settings which has been started will cancel.

Interrupting grinding

  • Weight-based recipes cannot be interrupted, because a portafilter is zeroed each time it is inserted and the grinding process will start again.

  • Grinding is automatically interrupted when you remove the handle and will continue when you put it back in.

  • If you do not wish to continue the grinding process, press the controller. The display jumps directly to the selected mode and the previously suspended time is deleted.

Calibrating the load cell

NOTE: It is recommended to calibrate the load cell at six-month intervals - if handled correctly (eg. not collapsing handle on portafilter support).

Materials Required

  • Grinder brush

  • 1kg calibration weight

  1. Turn the controller to select the “Service” menu item.

  1. Select “Calibrate” item and confirm your selection by pressing the controller. Follow the instructions on the display.

  1. Place the 1kg weight on the portafilter support/basket holder as soon as the prompt appears on the display and continue to follow instructions.

  1. Remove the calibration weight from the holder when the message that calibration has been completed appears on the display.

Using the main menu

“Warning & Messages” menu item

“Statistics” menu item

“Edit recipes” menu item

“Service” menu item

“Settings” menu item

Leave main menu/submenu

Confirm selection

Edit selection

Bottomless portafilter

Single portafilter (Single Shot)

Double portafilter (Double Shot)

Manual grinding

Cleaning

Materials Required

  • Grinder Brush

  • Damp Chux Cloth

  • Grinder Cleaner

Daily Cleaning

CAUTION: Ensure the grinder has been turned off before cleaning

Cleaning the housing:

  1. Use a grinder brush to clean the following parts:

  • the spout

  • the portafilter holder/support

  • the screws for adjusting the portafilter support

  1. Pull the drip tray forward and out of the grinder. Use a damp cloth to wipe down the casing and drip tray as required.

  2. The load cell cover is fixed to the grinder by a magnetic holder. Lift the cover upwards to remove from the grinder. Use a grinder brush to remove ground coffee from the area of the load cell.

  3. Re-attach all dry parts removed for cleaning.

Cleaning the spout system:

  1. Pull the spout downwards out of the lock.

  2. Use a grinder brush to clean the spout on the casing (spout locking mechanism).

  3. Clean the spout with a damp cloth and then dry it.

 

CAUTION: Be careful not to damage the surface of the spout. Fine scratches can negatively impact the grinding result, as ground coffee adheres to the scratched, which can lead to dosage fluctuations.

Cleaning the bean hopper:

Materials Required

  • Grinder Cleaner

  • Grinder brush

  • Slot screwdriver

  1. Close the bean hopper by sliding in the funnel slide.

  1. Grind any coffee beans left in the grinding mechanism until the grinder runs empty.

  1. Use a slot screwdriver to undo the securing screw for the bean hopper.

  1. Rotate the bean hopper anticlockwise to release it from the grinder and lift it upwards to remove it from the grinder. Transfer the beans into an airtight container.

  1. Pour a cap of grinder cleaner into the grinding mechanism directly from above.

  1. Clean and replace the bean hopper and tighten the screw. If necessary, unlock the grinding degree slide.

  1. Set the grind size to 10 (all the way course).

  1. Press the upper button to start the grinding process and keep it pressed down until the grinder cleaner has been completely ground.

  1. Add a small amount of coffee beans back into the grinder and grind the same amount of coffee as grinder cleaner. This will flush out any leftover cleaning particles.

Cleaning the flapper:

NOTE: The flapper should be cleaned every 2-5 days.

  1. Remove the grinder lid; proceed as described above in ‘Cleaning the bean hopper’ for steps 1-5.

  2. Remove the flapper from its place in the grinder.

  3. Clean the flapper with lukewarm water then dry it.

  4. Replace the flapper in its place in the grinder.

  5. Put bean hopper back together.

Troubleshooting

Fault

Cause

Remedy

Fault

Cause

Remedy

The grinder is not grinding, the display is not lit up.

The power plug is not plugged into a socket.

Insert the power plug into a properly installed socket.

The bean hopper has not been inserted.

Insert the bean hopper properly.

The overcurrent protection switch has been triggered.

Check whether the release button of the circuit breaker has popped out. Push it back in if necessary. Contact your technician if it continues.

The electrical fuse has tripped.

Check the electrical fuse. If required, restore the fuse to its original state or replace. Contact your Operations Trainer.

The grinder is making noise but not grinding.

The grinding mechanism is clogged.

Release the grinding degree adjustment lock and set the grinding degree to '8'. Start the grinding process. The grinder will clear itself. Then set the desired grinding degree during operation.

Ground coffee has built up in the grinder because of overdosing in the portafilter.

Clean the spout system. Release the grinding degree adjustment lock and set the grinding degree to ‘10’. Start the grinding process. The grinder will clear itself. Then set the desired grinding degree during operation.

The grinding degree is too fine.

Release the grinding degree adjustment lock and set the grinding degree to ‘10'. Start the grinding process. The grinder will clear itself. Then set the desired grinding degree during operation.

A foreign object has got into the grinding mechanism.

Clean the grinding mechanism and remove the foreign object in the process. If the foreign object cannot be removed, contact your Operations Trainer.

The grinder is not grinding, the display is permanently red.

The grinder is not measuring.

The load cell must be calibrated.

The grinder is not grinding fine enough.

The grinding discs are worn out or require readjustment.

Contact your Operations Trainer.

The grinder is not grinding continuously or the grinding process stops intermittently.

The start button is faulty.

Contact your Operations Trainer.

The grinder is weighing incorrectly/imprecisely.

The load cell has misadjusted.

The load cell must be calibrated.

The grinder is not dosing into the centre of the inserted portafilter.

The spout is not correctly aligned with the portafilter.

Correctly align the spout with the portafilter by moving the spout up and down. If you cannot do this, contact your Operations Trainer.

The grinder’s dispensing accuracy is decreasing.

The ambient conditions have changed.

The load cell must be calibrated.

The calibration interval has been exceeded.

The spout is clogged.

Remove the spout or use a grinder brush to clean the spout from the outside (with the grinder turned off). Release the grinding degree adjustment lock and set the grinding degree to ‘10’. Start the grinding process. The grinder will clear itself. Then set the desired grinding degree during operation.

The grinder spout is damaged.

Contact your Operations Trainer.

The flapper is dirty or damaged.

Clean the flapper or contact your Operations Trainer.

The bean hopper cannot be attached.

There are beans in the bean hopper intake.

Remove the beans from the bean hopper intake.

The grinder lid cannot be attached.

The fixed disc flange is not mounted correctly.

Contact your Operations Trainer.

The adjustment ring is not mounted correctly.

 

M5 Puqpress

Cleaning

Daily Cleaning:

https://www.youtube.com/watch?v=WeWw6ncyB4M&list=PL5-vFyJPtlA6XIKuLfrVbj97j2iy652Fx&index=4

Weekly Cleaning:

https://www.youtube.com/watch?v=TvOqJmPkRuI&list=PL5-vFyJPtlA6XIKuLfrVbj97j2iy652Fx&index=5

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