370X
415A
Figure 30: Frame adjusting bolt assembly
Table 9: Impeller clearance - Metal-lined
Pump Size
Field Setting Impeller Back Clear-
ance inches (mm)
Field Setting Impeller Front Clear-
ance inches (mm)
XHD50
NA
0.02 (0.51)
XHD75
NA
0.02 (0.51)
XHD80
0.08 (2)
0.02 (0.51)
XHD100
0.08 (2)
0.02 (0.51)
XHD125
0.08 (2)
0.02 (0.51)
XHD150
0.08 (2)
0.02 (0.51)
XHD200
0.1 (2.5)
0.02 (0.51)
XHD250
0.1 (2.5)
0.02 (0.51)
XHD300
0.1 (2.5)
0.02 (0.51)
Table 10: Impeller clearance - Rubber-lined
Pump Size
Field Setting Impeller Front Clearance inches (mm)
XHD75
0.03 (0.75)
XHD80
0.03 (0.75)
XHD100
0.03 (0.75)
XHD125
0.03 (0.75)
XHD150
0.03 (0.75)
XHD200
0.03 (0.75)
NOTICE:
Currently rubber lined assemblies are configured only with single piece suction liners. Impeller
adjustment is only accomplished via adjusting the frame adjusting bolts.
Table 11: Field setting impeller back clearance with an expeller - Metal-lined assemblies
Pumps that have the dynamic seal option require different impeller running clearances to maximize expeller
performance. Refer to the table below for running clearances for pumps with expeller.
Pump Size
Field Setting Impeller Back Clear-
ance inches (mm)
Field Setting Impeller Seal Ring
Clearance inches (mm)
XHD50
NA
0.02 (.51)
XHD75
NA
0.02 (.51)
5.6 Impeller-clearance setting
54
XHD Installation, Operation, and Maintenance Manual
Summary of Contents for XHD
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