ATURIA TK, Instruction Manual

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LTK0E01D 05/2017
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Check conditions of impellers (2200), wear rings (1500), impeller rings (if any 2300), spacer sleeves (2461)
and bearings (3011-3012), which must be without linings or, on the contrary, must be replaced.
Diametric clearance between bowl wear ring and impeller collar, or between bowl wear ring and impeller
wear ring (if any) must be as indicated in the following table:
CLEARANCE REFERENCE MINIMUM DIAMETER
DIAMETER CLEARANCE
< 50 mm 0.25mm
from 50 < 65 0.28mm
from 65 < 80 0.30mm
from 80 < 90 0.33mm
from 90 < 100 0.35mm
from 100 < 115 0.38mm
from 115 < 125 0.40mm
from 125 < 150 0.43mm
from 150 < 175 0.45mm
from 175 < 200 0.48mm
from 200 < 225 0.50mm
from 225 < 250 0.53mm
from 250 < 275 0.55mm
During operation this clearance is bound to rise, with consequent performance and efficiency drop and
relative bearings overheating.
It is advisable to provide a set of spare parts to restore optimal performances.