Service manual

SECTION 5: PUMP I NSTALLATION
11 of 33
that adequate clearance is maintained between
the impeller blades and the body of the pump
scroll.
5.1.3 Attaching the Inlet Plate Assembly
From the scroll assembly side of the pump, orient the
inlet assembly so the threaded pipe coupling is on
the top. See partial end view on Page 11, Figure 4.
• Place inlet assembly onto the scroll assembly by
fitting the inlet assembly onto the M8 screw studs
on the scroll assembly. Be careful not to damage
gasket.
•Place M8 washers onto the M8 screw stud.
Thread the M8 hex nuts onto the M8 screw studs,
finger tighten. Repeat for all 12 screw studs. See
Page 11, Figure 4.
• Go back and tighten all 24 M8 hex nuts (torque to
132 in/lb) with a wrench to completely secure
pump scroll assembly to the pump frame and
pump inlet assembly to the pump scroll assembly.
FIGURE 4: Installation Configurations
5.2 Pump Impeller Rotation
The rotation of the impeller, as viewed from behind
the motor, must be clockwise when the pump dis-
charge orientation is bottom left horizontal. The rota-
tion of the impeller, as vie
wed from behind the motor,
must be counterclockwise when the pump discharge
orientation is bottom right horizontal. An arrow label
on the pump scroll indicates the direction of the
impeller rotation. To set the rotation direction, See
Page 17, Figure 15 and Page 18, Figure 17 after com-
pleting Section 5.
Side View
M8 Screw
Stud
Scroll Assembly
Impeller
End View
M8 Hexnut
and Washer
M8 Hexnut
and Washer
Vertical
Mounting
Plate
Inlet Assembly
Description Part Number
Pump Scroll 90713451
Hex Nut, M8 (24) 92204502
Washer, M8 x 16 OD x 1.6 95204502
Impeller 90713340