FRITSCH PULVERISETTE 4 classic line - Manual (Page 46)

9 Maintenance
DANGER!
Mains voltage
– Before beginning with maintenance work, unplug the
mains plug and protect the device against being unin-
tentionally switched back on again!
– Indicate maintenance work with warning signs.
– Maintenance work may only be performed by special-
ised personnel.
– Put safety equipment back into operation after mainte-
nance or repair work
We recommend keeping a safety logbook Ä Chapter 15
‘Safety logbook’ on page 56, where all work (maintenance,
repairs......) performed on the device is entered.
– The most important element of maintenance is regular
cleaning:
– When cleaning the complete device, adhere to the
guidelines of the Accident Prevention Regulation (BGV
A3) ‐ especially if the device has been set up in a dusty
environment or if the processed source material pro‐
duces dust.
Functional part Task or description Test Maintenance interval
Safety lock Hood lock Hood handle (1) cannot be
opened.
If this test is failed, do not
continue to work until the
fault has been rectified
Before each use!
Rotating bearings Permanent lubrication Bearing clearance Every 2,000 h or annually
Drive motor Permanent lubrication Bearing clearance Every 4,000 h or annually
Fan, ventilation slots Grinding chamber cooling
and electronics
Proper function, clean
when soiled
Twice a year
Grinding bowl clamping
device
Clamping plate rubber and
rubber disk in the grinding
bowl holder
Signs of use; replace if
pressed flat and no longer
elastic
After every 1,000 h
Grinding bowl seal Seal the grinding bowl Replace if dirt has pene-
trated
Every 100 h
Maintenance
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