FRITSCH PULVERISETTE 0 - Manual (Page 42)

10 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.
10.1 Checklist for troubleshooting
Fault description Cause Remedy
POWER light does not light up No mains connection Plug in mains plug
Main switch not switched on Switch on main switch
Mains fuse blown Replace mains fuse
Line fuse of mains socket Switch on or change the fuse in
the fuse box
Rattling noises Tension belt loose Tighten tension belt
Amplitude larger than 3 mm Set amplitude to less than 3 mm
Large control fluctuations around set point Sieve stack loose Tighten toothed belt
Screws of laminated spring
assembly loose
Re-tighten the screws (8Nm)
Flat springs defective Check flat springs for tears,
replace laminated spring assembly
if necessary
Flat springs too warm Allow to cool down
Sieving stock not dispersed evenly on the
sieve surface
Toothed belt tightened unevenly Tighten toothed belt evenly
The device is not level Level the device again by turning
the feet
Sieves too old and mesh wire
deformed (mesh wire has no ten-
sion)
Replace sieve
Repairs
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