8
Stage Plates
There are four types of Stage Plates used in this pump.
The basic construction is the same but dimensions vary as
shown in Figure 7.
1.
Suction Stage Plate (Key No. 10) is used above the
Guide Housing placed above the Suction Bracket.
This Stage Plate has a Bottom Seating Diameter of
121.2 mm, Top Seating Diameter of 121.3 mm, and no
Rubber Wear Ring.
2.
Standard Stage Plate (Key No. 14) is used in all
Stage Casings except those that require the other
Stage Plates listed here. This Stage Plate has a Top
and Bottom Seating Diameter of 121.3 mm and
includes a Rubber Wear Ring.
3.
IGH Stage Plate (Key No. 15) is used on the top and
bottom of Intermediate Guide Housings. This Stage
Plate has a Top and Bottom Seating Diameter of
121.3 mm and no Rubber Wear Ring.
4.
Discharge Stage Plate (Key No. 17) is used in the
last Stage Casing in the pump (at the Discharge end).
This Stage Plate has a Bottom Seating Diameter of
121.3 mm, Top Seating Diameter of 121.2 mm, and no
Rubber Wear Ring.
ASSEMBLY
Please refer to the exploded view on Page 10 for Key
No. references.
Please refer to Table VI, Page 9, for the correct
location of the Intermediate Guide Housings (which is
determined by the number of stages in the pump).
1.
Mount the Suction Bracket (Key No. 1) on the
Assembly Fixture (See Figure 8, Page 9, for Fixture
specifications) and clamp it through the holes
provided.
2.
Insert the Inner Strainer (Key No. 2) in the Suction
Bracket.
3.
Clean and straighten the Pump Shaft (Key No. 7) until
TIR is 50 to 100 microns (.002” to .004”).
4.
Lock the Coupling (Key No. 3) to the Pump Shaft (Key
No. 7) with the Coupling Lock Washer (Key No. 5) and
the M8 Allen Screw (Key No. 6).
5.
Install the Shaft in the Suction Bracket. Make sure that
the Shaft Assembly is correctly aligned and is down
solidly on the Fixture.
6.
Slide the Guide Sleeve (Key No. 8) down over the
Shaft and seat it on the Shaft’s step.
7.
Slide the Guide Housing (Key No. 9) over the Pump
Shaft. Seat it on the Suction Bracket by gently tapping
around it with a rubber mallet.
NOTICE: The bearing is not centered end-to-end in
the Guide Housing. Make sure that the Guide Housing
goes on to the Shaft with the short (9.25mm or 3/8”)
end of the Guide Housing going first, as shown in the
exploded view, Page 10.
8.
Slide the Suction Stage Plate (Key No. 10) over the
Shaft and seat it in the Guide Housing by gently
tapping it with a rubber mallet.
9.
Slide an Impeller (Key No. 11) over the Shaft until it
rests on the Guide Sleeve (Key No. 8).
10. Slide the first Stage Casing (Key No. 12) over the
Shaft and seat it on the Stage Plate by gently tapping
it with a rubber mallet.
NOTICE: The Stage Casing is pre-assembled with a
Diffuser (Key No. 13) and a rubber Diffuser Wear
Ring.
11. If your next stage is a standard Stage Casing,insert
the Standard Stage Plate (Key No. 14) and seat it in
the Stage Casing by gently tapping it with a rubber
mallet. If your next stage is an Intermediate Guide
Housing (IGH),Insert the IGH Stage Plate (Key No.
15) and seat it in the Stage Casing by gently tapping it
with a rubber mallet. When you reach the last stage in
the pump, insert the Discharge Stage Plate (Key No.
17) and seat it in the Stage Casing by gently tapping it
with a rubber mallet.
12. Repeat steps 9 through 11 until you are ready to
install the Discharge or an Intermediate Guide
Housing (IGH), whichever comes first. See Table VI,
Page 9, for IGH locations.
If an Intermediate Guide Housing is required, proceed
with steps 13 through 17. If not, go to Step 18.
13. Make sure that the Stage Plate installed in the last
Stage Casing is an IGH Stage Plate (Key No. 15), not
a Standard Stage Plate (Key No. 14).
14. Slide a Guide Sleeve (Key No. 8) over the Shaft and
seat it on the Impeller.
15. Slide the Intermediate Guide Housing (Key No. 16)
over the Shaft and seat it in the IGH Stage Plate by
gently tapping around it with a rubber mallet.
NOTICE: The bearing is not centered end-to-end in
the Intermediate Guide Housing. Make sure that the
Intermediate Guide Housing goes on to the Shaft with
the short (4.25mm or 3/16”) end of the Housing going
first, as shown in the exploded view, Page 10.
16. Slide another IGH Stage Plate (Key No. 15) over the
Shaft and seat it in the Intermediate Guide Housing
(Key No. 16) by gently tapping around it with a rubber
mallet.
17. Repeat steps 9 through 11 until the next Intermediate
Guide Housing or the Discharge Assembly is reached,
whichever comes first.
If a second Intermediate Guide Housing is required,
repeat steps 13 through 17. If not, go on to Step 18.
18. When all the stages and guide housing assemblies
are completed, slide the Spacer (Key No. 18) over the
shaft until it rests on the Impeller.
NOTICE: Be sure to install the Discharge Stage Plate
(Key No. 17) instead of the Standard Stage Plate (Key
No. 14) in the last stage before the Guide Housing
(Key No. 9).
19. Slide the Thrust Washer (Key No. 19) over the shaft
until it rests on the Spacer.