Flowserve WUC Worthington - Manual (Page 38)

WUC USER INSTRUCTIONS ENGLISH - 07/14
Page 38 of 52
with the next column pipe until the bowl assembly
can be disconnected from the intermediate or top
shaft [2120.1 or 2130.1].
11) Remove the grub screw [6814.2] and open the
impeller nut [2912]. Pull off the distance sleeve
[2460] and take out the key [6700.6].
If the pump is fitted with an inducer
[2215], it has to be pulled off instead of the
spacer sleeve.
12) Open the tie bolt and hexagon nut [6571, 6581.10]
and remove the suction casing [1130] and suction
bell [1310].
Take care of the O-ring [4610.5].
13) Pull off the impeller [2200.1] from the pump shaft
and remove the key [6700.3].
14) Pull off the pump bowl [1170.1], including the
diffuser [1410.1]. Now you can take off the
interstage sleeve [2410.1] and the next stage
impeller [2200.1].
Take care of the O-ring [4610.5].
15) Proceed with the next stage by repeating step 13
and 14, until the hydraulic section is completely
dismantled. For disassembly of column sections
proceed with step 8 – 10.
6.7.2 Dismantling of mixed flow impeller pump
types (Francis type)
1) Completely drain the pump by using the drain
connection. By pumping explosive or toxic media,
flush it with Nitrogen.
2) Uncouple the pump from the motor and remove
the motor after disconnecting it from the electrical
net.
3) Pull off the coupling hub from the pump shaft
[2110] and take out the key [6700.1].
4) Secure the mechanical seal by putting the tool into
the groove of the shaft sleeve. Loose the shrunk
ring, and disconnect the seal piping.
Drain the seal system, if
applicable.
5) Drain the oil from the bearing housing using the
plug [6569.1]. Loose the studs [6572.4] and pull out
the pump from it´s can.
6) Loose the socket head cap screw [6579.1] and slip
down the rotor by turning the shaft nut [2910] and
remove it.
If applicable pull off the fan [8161]
after loosing the grub screw [6814.3].
Use an anaerobic adhesive for securing the
socket set screw for reassembly.
If the pump is equipped with a rigid
spacer coupling open the socket head cap screws
[6579.3] move the coupling half [7200], remove
the intermediate coupling [7021], coupling ring
splits [7415], coupling half [7200] and keys
[6700.8].
7) Loose the studs [6572.1], take off the bearing
cover [3260.1] and remove key [6700.2].
Take care of the coupling shell splits
[7240 ].
Pull off the bearing housing [3200]. Loose the
studs [6572.2] and pull off the mechanical seal
cartridge.
To disassemble only the
hydraulic section start with point 11.
8) Open the hexagon head bolts [6577.4] and
disconnect the first column pipe from the
headstock [1141].
9) Pull out the complete bowl assembly together with
shafts and column pipes. Disconnect the first
column pipe.
10) Open the socket head cap screws [6579.2] and slip
upwards the shaft coupling [7020]. Remove the
coupling shell splits [7240]. Now the shafts are
uncoupled and you can proceed the same way
with the next column pipe until the bowl assembly
can be disconnected from the top or intermediate
shaft [2130.1 or 2120.1].
11) Remove the grub screw [6814.2] and open the
impeller nut [2912]. Pull off the distance sleeve
[2460] and take out the key [6700.6].
If the pump is fitted with an inducer
[2215], it has to be pulled off instead of the
spacer sleeve.
12) Open the hexagon head bolts [6577.7] and pull off
the stage casing [1160].
Take care of the O-ring [4610.5].
Now you can pull off the interstage sleeve
[2410.1] from the pump shaft [2110].
13) Pull off the impeller [2200.1] from the pump shaft
and remove the key [6700.3].
14) Open the hexagon head bolts [6577.7] and pull
off the pump bowl [1170.1].
Take care of the O-ring [4610.5].
Pull off the second intermediate bearing sleeve
[3400.2] from the pump shaft [2110].
15) Proceed with the next stage by repeating step 13
and 14, until the hydraulic section is completely
dismantled. For disassembly of column sections
proceed with step 8 – 10.
6.7.3 Dismantling of 10WUC-2H
1) Completely drain the pump by using the drain
connection. By pumping explosive or toxic media,
flush it with Nitrogen.