FRITSCH PULVERISETTE 9 - Manual (Page 37)

9 Repairs
DANGER!
Mains voltage!
– Before beginning with repair work, unplug the mains
plug and protect the device against being unintention-
ally switched back on.
– Indicate repair work with warning signs.
– Repair work may only be performed by specialised per-
sonnel.
– Put safety equipment back into operation after mainte-
nance work.
9.1 Checklist for troubleshooting
Fault description Cause Remedy
Mill does not start up No mains connection Plug in mains plug
Main switch (6) off (0) Switch on (I) main switch (6).
Timer at 0 Setting the time
Excess current protection switch (9) Press the protection switch (9) on the
side panel back in.
Grinding set sticks to rubber
plate.
Grinding process too long; grinding set
got too hot
Rub talcum onto rubber plate or
replace it
Grinding stock escapes Seal in the lid of the grinding set is defec-
tive or soiled
Clean seal ring and counter-face on
the grinding cup or replace seal ring
Runs unevenly with strong vibra-
tions
Spring of the suspension of the holder
broken
Replace the spring
Grinding set cannot be clamped
in tightly
Rubber plate too thin or worn Replace rubber plate or place spacers
underneath
Bearing sheaths of the eccentric shaft
are worn down
Replace bearing sheaths
Repairs
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