Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual page 115

COMPRESSOR
ITEM
DESCRIPTION
A Low Speed Journal-Gear End
B Low Speed Journal-Motor End
C1 Low Speed Labyrinth to Thrust Disk
C2 Labyrinth to Low Speed Shaft
D Low Speed Shaft Thrust Float
E Impeller Eye to Shroud
F1 Impeller Bore to Shaft-Rear
F2 Impeller Bore to Shaft-Front
G Impeller Discharge to Shroud
H Impeller Spacer to Shaft
I Slinger to Shaft
J Labyrinth to Slinger
K Labyrinth to Impeller
L High Speed Journal-Impeller End
M Thrust Assembly Seal Ring Axial Clearance
N Thrust Assembly Seal Ring to Shaft
O High Speed Shaft Thrust Float
P High Speed Journal-Gear End
*Depends on impeller size, contact your Carrier Service Represen-
tative for more information.
NOTES:
1. All clearances for cylindrical surfaces are diametrical.
2. Dimensions shown are with rotors in the thrust position.
3. Frame 3 rolling element style high speed shaft and bearing
assembly cannot be pulled from impeller end. The transmission
assembly must be removed from the compressor casting (after
the impeller is removed) and the bearing temperature sensor
19XRV COMPRESSOR FITS AND CLEARANCES (in.)
FRAME 2
Code 201-299, 2ZZ
Fixed Diffuser
.0050/.0040
.0050/.0040
.0115/.0055
–.0020/–.0005
.0025/.0010
.0013/.0005
.0047/.0037
.0045/.0015
.0050/.0040
Fig. 48 — Compressor Fits and Clearances
FRAME 3
321-389, 3ZZ
With Rolling
Element
Bearings
.0050/.0040
.0050/.0040
N/A
N/A .010/.005
.020/.008 .020/.008
* *
–.0025/–.0010
N/A N/A
* *
.0025/.0010
.0012/.0004
.013/.009 .010/.006
.012/.008 .012/.008
N/A
.006/.002 N/A
N/A
.014/.008 0 Float
N/A
must be removed from the high speed shaft and bearing assem-
bly before the high speed shaft and bearing assembly can be
separated from the transmission.
4. If any components within the Frame 3 rolling element high speed
shaft and bearing assembly are damaged it is recommended that
the entire high speed shaft and bearing assembly be replaced.
5. Impeller spacing should be performed in accordance with the
most recent Carrier Impeller Spacing Service Bulletin.
115
FRAME 4 FRAME 4
421-487 4B1-4W7
Split Ring
Fixed Diffuser
Diffuser
.0055/.0043 .0055/.0043
.0053/.0043 .0053/.0043
.010/–.005 .010/–.005
.0095/.0055 .0095/.0055
.023/.008 .023/.008
* *
–.0021/–.0006 –.0021/–.0006
–.0014/.0000 –.0014/.0000
* *
.0025/.0010 .0025/.0010
.0012/.0004 .0012/.0004
.010/.006 .010/.006
.012/.008 .012/.008
.0040/.0028 .0040/.0028
.006/.002 .006/.002
.0045/.0015 .0045/.0015
.014/.008 .014/.008
.0048/.0038 .0048/.0038
FRAME 5
501-599
Split Ring
Diffuser
.0069/.0059
.0065/.0055
N/A
.013/.009
.020/.008
*
–.0019/–.0005
–.0014/.0000
*
.0024/.0010
.0012/.0004
.010/.006
.012/.008
.0048/.0038
.006/.002
.0045/.0015
.014/.008
.0062/.0052