Radial Clearances N And R - ABB HT577406 Operation Manual

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8.5
8.5
Feeler gauge
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Disassembly and assembly

Radial clearances N and R

Radial clearances N and R
N and R
These are the theoretical values of the radial clearance between the com-
pressor wheel and the wall insert and / or turbine wheel and the gas outlet
flange.
The minimum and maximum values result from the manufacturing toler-
ances of the compressor wheel and turbine wheel or the wall insert and
gas outlet flange.
Operation Manual / TPS44-F.. - TPS61-F..
8
8.5
N1 and N2 as well as R1 and R2 are
each measured at the same time using
two feeler gauges.
To measure N1 and N2, the feeler gaug-
es must be pushed between the wall in-
sert and the compressor wheel free of
play, in each case above and below.
To measure R1 and R2, the feeler gaug-
es must be pushed between the gas out-
let flange and the turbine free of play, in
each case above and below.
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