Flowserve WUC Worthington - Manual (Page 46)

WUC USER INSTRUCTIONS ENGLISH - 07/14
Page 46 of 52
Open all necessary valves in the
cooling and auxiliary piping and check the flow.
Disassembly of the seal cartridge
is only allowed by authorized personal. Contact
Flowserve for any service of the mechanical seal. We
recommend to have a spare cartridge seal on stock
for easy replacement.
Actions before first start up:
The pump will be delivered with correct vertical
adjustment of the rotor.
Try to turn the rotor by hand.If the
rotor cannot be turned readjust it following procedure
in section 5.3.1 Adjusting of the rotor.
Pump must be cooled down prior
to start up. Refer to section 5.7 Cool down procedure
for cryogenic service.
7.2 Changing of mechanical seal
7.2.1 Changing of mechanical seal with rigid
spacer type coupling
1) Completely drain the pump by using the drain
connection. By pumping explosive or toxic media,
flush it with Nitrogen.
2) Secure the mechanical seal by putting the
mounting plates into the groove of the shaft
sleeve. Loose the shrunk ring, and disconnect
the seal piping.
Drain the seal system, if
applicable.
3) Loose the socket head cap screw [6579.1] and slip
down the rotor by turning the shaft nut [2910].
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.
4) Open the socket head cap screws [6579.3] move
the coupling half [7200] and remove the
intermediate coupling [7021].
5) Now remove the coupling ring split [7415], the
coupling half [7200] and the key [6700.8].
6) Loose the studs [6572.2] and pull off the
mechanical seal cartridge.
7) For assembly follow the reverse procedure.
7.3 Changing of mechanical seal
7.3.1 Changing of mechanical seal without rigid
spacer type coupling
1) Completely drain the pump by using the drain
connection. By pumping explosive or toxic
media, flush it with Nitrogen.
2) Pull off the coupling hub from the pump shaft
[2110] and take out the key [6700.1].
3) Secure the mechanical seal by putting the
mounting plates into the groove of the shaft
sleeve. Loose the shrunk ring, and disconnect the
seal piping.
Drain the seal system, if
applicable.
4) Drain the oil from the bearing housing using the
plug [6569.1].
5) Loose the socket head cap screw [6579.1] and slip
down the rotor by turning the shaft nut [2910] and
remove it. Take off the labyrinth ring [4330.1].
If applicable pull off the fan [8161]
after loosing the grub screw [6814.3].
6) Loose the studs [6572.1] take off the bearing cover
[3260.1] and remove the key [6700.2].
Take care of the springs [4260].
Pull off the bearing housing [3200]. Loose the
studs [6572.2] and pull off the mechanical seal
cartridge.
7) For assembly follow reverse procedure.
Adjust the rotor axialy according to
section 5.3 Impeller clearance.