Pump Size
Field Setting Impeller Back Clear-
ance inches (mm)
Field Setting Impeller Seal Ring
Clearance inches (mm)
XHD80
0.04 (1.02)
0.02 (.51)
XHD100
0.04 (1.02)
0.02 (.51)
XHD125
0.06 (1.52)
0.02 (.51)
XHD150
0.06 (1.52)
0.02 (.51)
XHD200
0.06 (1.52)
0.02 (.51)
XHD250
0.08 (2.03)
0.02 (.51)
XHD300
0.08 (2.03)
0.02 (.51)
5.6.2 Set impeller clearance dial indicator method - XHD
WARNING:
Failure to disconnect and lock out driver power may result in serious physical injury or death.
Always disconnect and lock out power to the driver before performing any installation or main-
tenance tasks.
•
Electrical connections must be made by certified electricians in compliance with all inter-
national, national, state, and local rules.
•
Refer to driver/coupling/gear manufacturer's installation and operation manuals (IOM) for
specific instructions and recommendations.
NOTICE:
•
For rubber lined assemblies, refer to steps 1-10 that follow.
•
The Suction seal ring option is under currently development.
•
Refer to
Impeller clearance - Rubber-Lined
table to define the impeller front clearance
setting.
All of the instructions that are stated in the following steps are based on viewing the unit from the rear-
ward (drive) end.
1.
Remove the coupling or v-belt guard.
2.
Loosen the two adjusting nuts (415A) on the forward sides of the bearing frame adjustment plates
(234F) by turning them clockwise.
3.
Loosen but do not remove the adjustment plate hold-down bolts (352G) and nuts (427D) that clamp
the bearing frame adjustment plates (234F) to the pedestal (131).
Do not remove the adjustment plate hardware. Keep hardware finger tight to keep the power frame
constrained to the pedestal.
4.
Turn the two adjusting nuts (415A) on the forward sides of the bearing frame adjustment plates
(234F) sequentially clockwise, 1/2 of a turn each at a time, to draw the power end forward until the
impeller (101) contacts the Suction Liner (562).
5.
Turn the shaft (122) clockwise while performing step 4 above to ensure that there is contact be-
tween the impeller (101) and Suction Liner (562). Stop turning the forward adjusting nuts when a
firm drag is encountered.
6.
Place the dial indicator so that the button contacts either the shaft end, face of the coupling, or face
of the sheave bushing or the face of the bearing end cover. Zero the indicator.
7.
Turn the two adjusting nuts (415A) on the rear sides of the bearing frame adjustment plates (234F)
sequentially counterclockwise, 1/2 of a turn each at a time, to draw the power end and impeller
(101) backward until there is an approximate 0.02 inch (.50 mm) gap between the impeller (101)
and suction liner (562) as measured on the dial indicator.
5.6 Impeller-clearance setting
XHD Installation, Operation, and Maintenance Manual
55
Summary of Contents for XHD
Page 1: ...Installation Operation and Maintenance Manual XHD ...
Page 2: ......