Flowserve WUC Worthington - Manual (Page 42)

WUC USER INSTRUCTIONS ENGLISH - 07/14
Page 42 of 52
6.9.2 Assembly of mixed flow impeller pump
types (Francis type)
Assembly is done preferably in vertical position.
1) Put the interstage sleeve [2410.3] and the last
stage casing over the pump shaft [2110], and slip
on the impeller [2200.1]. After putting the O-ring
[4610.5] to the next pump bowl [1170.1], slip it on
to the last pump bowl [1170.2] and tight the
hexagon head bolts [6577.7].
2) Slip on the interstage sleeve [2410.1]. Put in the
key [6700.3] and slip on the impeller [2200.1].
3) Repeat step 1 and 2 until you have mounted the
first stage impeller. If the pump is fitted with
double suction impeller, move directly to step 8)
and follow procedure until step 15).
4) Slip on the interstage sleeve [2410.1] and put on
the suction casing [1130] including the O-ring
[4610.5]. Tight the hexagon head bolts [6577.7].
5) Put on the distance sleeve [2460] or inducer
[2215] and secure the assembly by tightening the
impeller nut [2912] just by hand.
6) Loose the impeller nut [2912] to the next location
for securing it with a grub screw [6814.2].
7) For further pump assembly follow reverse
disassembly procedure.
8) Secure the assembly by tightening the impeller
nut [2912.1] just by hand.
9) Loose the impeller nut [2912.1] to the next
location for securing it with a grub screw [6814.2].
10) Put the bearing sleeve [3400.5] over the pump
shaft [2110]. Place the o-ring [4610.5] on the
diffusor suction casing [1410] and put them
together over the pump shaft [2110]. Tighten the
hexagonal head bolts [6577.7].
11) Put in the key [6700.11] and slip on the impeller
[2200.3] over the pump shaft [2110].
12) Put the bearing sleeve [3400.3] on the pump
shaft [2110] and assemble the suction casing
[1130] including the o-ring [4610.7]. Tighten the
hexagonal head bolts [6577.11].
13) Put the key [6700.12] on the pump shaft [2110].
Put on the distance sleeve [2460] and secure the
assembly by tightening the impeller nut [2912.2]
just by hand.
14) Loose the impeller nut [2912.2] to the next
location for securing it with a grub screw [6814.2].
15) For further pump assembly follow reverse
disassembly procedure.
6.9.3 Assembly of 10WUC-2H
Assembly is done preferably in vertical position.
1) Put the last stage casing over the pump shaft
[2110]. After putting the O-ring [4610.5] to the
next pump bowl [1170.1], slip it on to the pump
bowl [1170.2].
2) Put the circlip [6544.2] and the key [6700.3] on to
the shaft and slip on the impeller [2200.1].
3) Secure the impeller with the retaining ring and
put on the next pump bowl [1170.1] including an
O-ring [4610.5].
4) Repeat step 2 and 3 until you have mounted the
first stage impeller.
5) Put on the suction casing [1130] including the
O-ring [4610.5] and tighten the tie bolt and
hexagon nut [6571, 6581.10].
6) For further pump assembly follow reverse
disassembly procedure.
Pump bowl [1170.1] can be splitted in the
stage casing [1160] and the diffuser [1410.1]. Refer
to sectional drawing.
6.9.4 Assembly of 20, 45 & 80WUC-2L
Assembly is done preferably in vertical position.
1) Put the last stage casing over the pump shaft
[2110]. After putting the O-ring [4610.5] to the
next pump bowl [1170.1], slip it on to the last
pump bowl [1170.1] and tight the hexagon head
bolts [6577.7].
2) Put the circlip [6544.2] and the key [6700.3] on to
the shaft and slip on the impeller [2200.1].
3) Secure the impeller with the retaining ring and
put on the next pump bowl [1170.1] including an
O-ring [4610.5].
4) Repeat step 2 and 3 until you have mounted the
first stage impeller.
5) Put on the suction bell [1310] including the O-ring
[4610.5] and tighten the hexagon head bolts
[6577.7].
6) For further pump assembly follow reverse
disassembly procedure.
For 20 WU pumps consider the
screwed coupling of the pump shaft [2110] to the
last intermediate shaft [2120.2]. Screw the coupling
sleeve [7250] to the pump shaft [2110] until the
shaft end appears in the bore of the sleeve. Now
screw the intermediate shaft [2120.1] into the
intermediate shaft [2120.2] until it matches the end
of the pump shaft [2110]. The coupling sleeve
[7250] has a tolerance fit on both shafts to ensure
proper alignment. Consider the left hand thread
and use Loctite 243 to secure the threaded
connection.
Due to the threaded coupling
the 20 WU pump must not turn in reverse
direction.