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Frequently Asked Questions
You need to set the macro-adjust at 16 or higher Clean your grinder and check position of coneholder. Very important: Make sure it`s perfectly snapped in. Although some roasts do require high settings, most range from 3 to 8.
Please adhere to the recommended settings (4-12). Failure to follow our recommendations can give rise to faster wear, overheating and/or inconsistencies. Very fine settings (1-3) - depending on roast - may cause the Circuit Breaker to trigger. Very coarse settings (16-29) may result in clogging and/or defects of the micro-/macro-Adjustment. When reassembling the Adjustment after cleaning, position it at the marked spot, move it slighlty until it engages and turn it right towards FINE (without using force). Misshandling may cause the Micro Switch to break.
Slower/longer flow rate (due to change in fineness) despite same setting Disassemble coneholder and thourougly clean grinding chamber and cone. When reassembling coneholder, make sure for it to be perfectly snapped in.
Faster/shorter flow rate (due to changed fineness) despite same setting Add one 0.2mm shim (delivery contents) underneath the cone. Watch the respecitive Video on our YouTube-channel (Adding shims).
CIRCUIT BREAKER (Maschine Safety = ON/OFF Switch)
The Maschine Safety Switch (Circuit Breaker) keeps triggering - Proceed as described in 6.2.3. Clearing Blockades and make sure the burrs are not blocked (by a foreign object / ground coffee) - Select coarser / higher setting (alse see 4.5. Adjustment) - Do not exceed the maxmimum permissible operating cycle / activation time per grind (also see 4.4. Operating time) - Keep the recommended breaks in between grinding operations - Use the LIGHT-cone (Delivery contents M and PLUS) for a slower intake of beans and finer grinding
Your etzMAX (m/plus) keeps shutting down when using hard/light beans Use the optional (LIGHT) cone (delivery contents) as the Standard Cone is optimized for medium-dark roasts. Watch the respective Video on our You-Tube-channel (Changing coneholder).
Motor does not start or keeps humming without grinding (Display is on and shows time/weight at zero)
- Proceed as described in 6.2.3. Clearing Blockades to exclude blockades due to foreign objects or jammed coffee powder (ensure to regularly clean your ginder to prevent ground coffee powder from firming up) - Adjustment not properly assembled: Check position of Adjustment (also see 5.1.4. Adjustment) - Hopper not fully secured: Remove and replace Hopper - Motor has overheated: Wait for the motor to cool down (also see 4.4. Operating time) - Selet coarser setting - Ensure for coneholder to be perfectly snapped in - etzMAX-m/plus: Use LIGHT-cone (Delivery contents) that has a reduced intake of beans thus generating less heat and allowing for more fineness - Check the time- / weight-settings: minimum 5g (weight-based) or 0.2 sec (time-based)
All LEDs (PRESET-buttons) on your weight-based etzMAX are lit with the Display showing 0.0 Your are in manual weighing mode. Press and hold STOP for at least 5 seconds to switch back to time- or weight-based mode (also see 4.6.4. Additional Features).
When pressing STOP for 5 seconds, your weight-based etzMAX switches from manual-weighing mode to time-based mode The system returns to the mode it was in before switching. Once you are back in time-based mode, press and hold STOP and 1 simultaneously (for 5 seconds) to switch to weight-based mode.
The grinding operation may be paused by pressing STOP but cannot be continued by pressing START To pause during grinding, press START (not STOP), to continue press START again.
Your weight-based etzMAX shows a different reading for a given output compared to what an auxiliary scale says
Make sure for both scales to be calibrated frequently (and/or after having been exposed to external interferences) as otherwise neither can be assumed as correct (also see 4.6.4. Additional Features: Scale Calibration).
Your weight-based etzMAX seems to be inconsistent in dosing
If your etzMAX-W is off more than +/- 0.1-0.2g or if the motor powers off after grinding only a fraction of the required dose, please ensure the grinder is placed on a stable, sturdy surface and sits firmly with all four feet on the counter during grinding. The scale is very sensitive to vibration and rocking motions, even when very sllight. When changing any parameter (roast/setting) or after cleaning, it will take a few grinding operations for the system to adapt accordingly. - Ensure not to touch the grinder or portafilter during grinding - The etzMAX is optimized for the use with portafilters (too heavy/too light a receptacle may lead to inaccuracies) - Other reasons for inconsistencies in dosing: statically charged beans, coffee powder remains on portafilter and/or portafilter holder, water dropping from wet portafilters, exceeding the maximum operation cycle, change of roast/setting.
When to add (how many) shims and why? In order to reduce the distance between cone and ring burr, the cone burr may be shimmed. Adding a shim unter the cone moves the grind range back thus compensating wear over the course of time (which might be sooner in case of very fine grinding). Shimming depends on use, coffee and preferences.
Does the etzMAX-Updater APP work with Android? Although it would, at this point, we do not offer Updates via Android based on the fact that updating firmware via Android is challenging to the point of delivering negative user experiences.
You encounter inconsistencies in flow rate (at the same amount of ground coffee) - Oily residues at the exit of the hopper may disturb the flow of beans. Make sure to clean your Hopper on a regular basis. - Small or mixed sized beans may hamper their steady intake around the safety-cone at the bottom of the Hopper thus causing distinctions in fineness.
Your grinder has clogged As our grinders are designed for on-demand Espresso grinding (not bulk), we recommend not to grind too much coffee at once but to keep to recommended doses and settings. Other causes for clogging: - flavored coffee, frozen or refrigerated beans, oily roasts (moisture)
- very coarse settings (from 16 upwards) - grinding ground coffee again (our grinders are designed to grind whole coffee beans)
- lack of cleaning (especially before/after a longer period of non-use)
- damaged parts If your grinder is clogged, it needs to be cleaned out (according to instructions). Please make sure, the coneholder is perfectly snapped in and the micro-/macro Adjustment has not been damaged (adjust your settings according to our recommendations).
If you have problems operating the etzMAX and cannot find the answer to your question neither in the above list nor the operating manual, please contact us via email@example.com!