Flowserve BP - Manual (Page 32)

BP USER INSTRUCTIONS ENGLISH 85392725 10-09 (E)
Page 32 of 44 flowserve.com
g) Move shaft up and down to check that the total
movement of the impeller.
For the value of movement, see “Rotor movement
(axial total end play)” in section 10.4 Technical Data
Sheet.
h) Assemble up to last stage in accordance with the
same procedure as described below.
i) Fit the split ring [2531.2] into the groove and the
impeller key [6700] into the keyway.
j) Slide the impeller [2200.2-11] onto the shaft until
it is home against the split ring [2531.2].
k) Heat the following stage piece [1460] and insert it
into the bore of the preceding stage piece [1460].
Make sure that the dowel pin of fitted in the
previous stage piece engages the drilled hole in
the following stage piece.
l) Insert the following diffuser [1412] into the bore of
the preceding stage piece [1460]. Make sure that
the dowel pin of fitted in the previous stage piece
engages the drilled hole in the following diffuser.
m) Test the assembly for total movement.
For the value of movement, see “Rotor movement
(axial total end play)” in section 10.4 Technical Data
Sheet.
n) Fit the split ring [2531.2] and the impeller key
[6700.2] for the last stage into the groove and the
keyway respectively. And then, slide the last
stage impeller [2200.11] onto the shaft until it is
home against the split ring.
o) Fit the last stage diffuser [1413] into the bore of
the last stage piece [1460], screw the socket
head cap screws into the tapped holes of the last
stage stage piece [1460] and fasten the last
stage diffuser [1413].
6.10.2 Balancing drum installation
Loose fit balancing drum
a) Slide the balancing drum [6230] along the shaft
with key [6700] against the last stage impeller
back hub [2200]. Insert the split-type thrust ring
[2531.3] for the balancing drum [6230] into the
circumferential groove in the shaft. Then pull the
balancing drum [6230] by using the eye bolts
(Tool List No.20) until the outboard end of it
contacts with the side face of the thrust ring
[2531.3]. Install the “O” ring [4610] and backup
ring [3645] into the circumferential groove in the
balancing drum, and attach the retainer thrust
ring with fastening the bolts [6570]. Finally, install
the spirolox ring [6544] into the circumferential
groove in the retainer thrust ring.
Shrink fit balancing drum
b) Heat the balancing drum in an electric furnace
and slide the balancing drum along the shaft with
key [6700] against the last stage impeller back
hub [2200]. Insert the split-type thrust ring
[2531.3] for the balancing drum [6230] into the
circumferential groove in the shaft. Then pull the
balancing drum [6230] by using the eye bolts
(Tool List No.20) until the outboard end of it
contacts with the side face of the thrust ring
[2531.3]. For shrunk fit balancing drum, apply
heat on the balancing drum and quickly slide it
onto the shaft at the appropriate position
c) Test the assembly for total movement.
For the value of movement, see “Rotor movement
(axial total end play)” in section 10.4 Technical Data
Sheet.
6.10.3 Installing Inner Element (Rotor assembly.
Inner Casing)
a) Attach the eye bolts (Tool List No.10) to the last
diffuser and install the shaft lug (Tool List No.4)
on the shaft near the thrust bearing. Then, fasten
it with the thrust collar nut [3712.1]
b) Lift slightly the inner element by using the eye
bolts and attach the fixing device (Tool List No15)
to the inner element (rotor assembly) using the
hookers (Tool List 8/9).
c) Lift the inner element completely out of the
support stand. Then, attach the lifting lug (Tool
List No.3) for the shaft to the shaft adjacent to the
fixing device (Tool List No.15) and move the
inner element from vertical position to horizontal
position by using the eye bolts (Tool List No.10),
the lifting lug (Tool List No.3), the shaft lug (Tool
List No.4) and crane or chain block.
d) Attach the lifting lug (Tool List No.2) to the outer
surface near the center of gravity of the inner
element and sling the inner element horizontally
as mentioned above and crane or chain block.
Next, tighten the extension sleeve (Tool List
No.1) to the coupling end of shaft. Then, remove
the lifting lug (Tool List No.3) the eye bolts (Tool
List No.10) and the fixing device (Tool List
No.14).
e) Move the inner element horizontally to the pump
casing and insert it into the bore of the casing
barrel [1100] using the lifting lug (Tool List No.2).
f) If the inner element has entered in the casing
barrel sufficiently enough be supported, screw
the centre bolts (Tool List No.18) into the last
stage diffuser[1413] and attach the coupling (Tool
List No.16) the bolts (Tool List No.19) and the
plate (Tool List No.17) to the above centre bolts.
Remove the lifting lug (Tool List No.2) from the
inner element.
g) Furthermore insert the inner element into the
casing barrel while supporting the coupling and
outboard (thrust) ends of the shaft, by utilizing
crane or block. If necessary, push the inner