Carrier AquaEdge 19XR Start-Up, Operation And Maintenance Instructions Manual page 87

Single stage and two-stage semi-hermetic centrifugal liquid chillers with pic 6 controls and r-134a/r-513a 50/60 hz
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Table 45 — 19XR Two-stage Compressor Frames 6 and 7 Fits and Clearances
ITEM
A
Low Speed Journal — Compressor End
B
Low Speed Journal —Motor End
C
Low Speed Labyrinth — Compressor End
D
Low Speed Shaft Thrust Float
E
Impeller Bore to Shaft — 1st Impeller
F
Impeller Bore to Shaft — 2nd Impeller
G
Low Speed Bearing Labyrinth to Shaft — Motor End
H
Low Speed Bearing to Cover Assembly
I
Bull Gear to Low Speed Shaft
J
High Speed Shaft Labyrinth to High Speed Labyrinth Sleeve
K
Balance Piston Labyrinth to 2nd Stage Impeller
L
2nd Stage Eye Labyrinth to Impeller
M
Interstage Labyrinth Spacer to High Speed Shaft
N
Interstage Labyrinth Seal
O
1st Stage Eye Labyrinth to Impeller
NOTES:
1. All clearances for cylindrical surfaces are diametrical.
2. Dimensions shown are with rotors in the thrust position.
Fig. 55 — Compressor Fits and Clearances — Two-Stage Compressor, Frame Sizes 6 and 7
COMPRESSOR
DESCRIPTION
LOW SPEED BEARING
MOTOR END
SEE DETAIL D
FRAME 6 (in.)
FRAME 6 (mm)
0.006/0.007
0.004/0.005
0.009/0.013
0.008/0.020
–0.002/0.000
–0.002/0.000
0.009/0.013
0.002/0.004
–0.001/0.000
0.006/0.009
0.008/0.012
0.008/0.012
0.001/0.002
0.011/0.017
0.016/0.020
3. If any components within a rolling element high speed shaft and
bearing assembly are damaged it is recommended that the entire
high speed shaft and bearing assembly be replaced.
LOW SPEED BEARING
COMPRESSOR END
SEE DETAIL B
HIGH SPEED BEARING
MOTOR END
SEE DETAIL C
87
FRAME 7 (in.)
0.15/0.18
0.006/0.008
0.10/0.11
0.004/0.006
0.23/0.32
0.009/0.013
0.20/0.50
0.008/0.020
–0.05/0.01
–0.002/0.000
–0.06/0.01
–0.002/0.000
0.23/0.33
0.010/0.012
0.04/0.10
0.001/0.003
–0.03/0.00
–0.0013/0.0000
0.15/0.23
0.006/0.009
0.20/0.30
0.008/0.012
0.20/0.30
0.012/0.016
0.02/0.05
0.001/0.003
0.29/0.42
0.009/0.012
0.41/0.50
0.024/0/028
AERO
SEE DETAIL A
FRAME 7 (mm)
0.15/0.19
0.10/0.15
0.23/0.33
0.20/0.50
–0.05/–0.01
–0.05/–0.01
0.25/0.30
0.03/0.08
–0.033/0.000
0.15/0.23
0.20/0.30
0.30/0.40
0.04/0.07
0.23/0.30
0.62/0.72
a19-2217

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