Grinder; Helpful Coffee Tips And Tricks - WMF 1000 Service Manual

Service Manual
4.3.7.2

Helpful coffee tips and tricks

The quality of the brewed coffee depends not only on the
device, but to an equal extent on the water, coffee variety,
grind, temperature, etc. Following are some particularly
important tips:
• Always use fresh coffee and darker roasts.
• Coffee beans and grounds are best stored in a cool place,
in a closed container.
• If the brewed coffee flows too quickly or too slowly, the
reason is usually that the grinding degree is incorrect.
Coffee flows too quickly:
Set the grinding degree finer = rotate clockwise = coffee
flows more slowly.
Coffee flows too slowly:
Set the grinding degree coarser = rotate anticlockwise =
coffee flows more quickly.
Caution:
The grinding degree may be adjusted only while the
grinder is operating.
Maintenance
Frequently encountered problems (symptoms)
grinder disks worn out; the discs suffer the most wear in the
fine grinding area. If these edges are dull, the resistance of
the grinder increases and blocking of the grinder is possible.
The following illustration shows new (figures 1 and 2) and
completely worn (figures 3 and 4) grinder disks. The signs of
wear are readily visible even along the outside edge.
Fig. 4-003
SMWMF 1000 - 02 - V05
1
3
Check
Check the counter status in the service program, then:
Empty the bean hopper and grinder.
Check the "Bean hopper empty" message.
Check the coffee powder for uniform grind, grain size
and grinding degree
Visually check the grinder disks for wear
Check: wire at powder outlet
Check the "Bean hopper empty" message
The current values must correspond that of the installed

grinder.

The grinders are measured during manufacturing and
labelled with a sticker with the current value (according
to the table below).
During installation, for each machine, the current value
of the grinder must be entered according to the table be-
low.
When a grinder is replaced during a service call, the new
current value must be configured.
Service program, System configuration window, Pa-
rameters tab, value: Current (empty bean hopper).
If there are problems detecting the "Bean hopper empty"
status, this is most likely because the current value is set
incorrectly.
Default values:
Grinder no-load
current
1.0 - 1.5 A
1.6 - 1.7 A
1.8 - 2.0 A
2
Service intervals
Check according to maintenance regulations, section
on page 3-1.
Check the condition of the grinder motor / gearbox with
regard to: Fastening
4
Housing/bearing plate defects
Gaps or grease escaping around the gearbox.
Traces of overheating around the flat plug-in connectors
Check the "No beans" message.
Grinding degree: visually check the grain size of the
coffee powder. Reset the grinding degree or replace the
grinder disks in pairs.
Replace according to maintenance regulations, section
on page 3-1.
grinder disks in pairs.
Check according to maintenance regulations, section
on page 3-1.
After the grinder disks are replaced, the counter must be set
to zero using the Service Program.
Function description
Value on Service program
grinder Value: Current (empty
sticker
bean hopper)
3 55
4 60
5 65
3.1
3.1
3.1
4-9
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