FRITSCH PULVERISETTE 23 - Manual (Page 27)

8 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 13
‘Safety logbook’ on page 35, 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.
n In stainless grinding bowls a burr can form over time on the inner
edge between the bowl and the lid due to the ductility of the mate-
rial. This burr causes the bowl and the lid to rest on each other,
metal against metal, and the O-ring seal ceases to function. If you
notice burr formation, it should be removed immediately with a
scraper or fine emery paper before the burr becomes so large that
removing it is difficult and requires a lot of effort.
Functional part Task Test Maintenance interval
Felt ring as piston seal Sealing the piston bearing Put a few drops of oil on
the piston
Every 50 operating hours.
Drive motor Permanent lubrication Bearing clearance Every 400 h or annually
Connection rod bearing Permanent lubrication Bearing clearance Every 400 h or annually
Piston bearing Maintenance free slide
bearing
Bearing clearance Every 400 h or annually
Spindle for the grinding
bowl clamping device
Clamping the grinding
bowls
Mobility, oil if necessary Every 100 h
Maintenance
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