Flowserve CPXV fitted with Mark 3 ASME hydraulics - Manual (Page 32)

CPXV with Mark 3 ASME hydraulics ENGLISH 71569291 12-14
Page 32 of 44
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6.11.5 Impeller and casing assembly (threaded
on impeller)
a) Where O-ring option is available, fit a new O-ring
[4610.1] into the impeller, using a small amount of
grease to hold it in place.
High Chrome iron impellers and certain
others do not offer this option).
b) Assemble impeller [2200] onto the shaft [2100].
c) Tighten the impeller. Use the same method as in
disassembly but rotate in opposite direction. A
few sharp strikes will tighten it to the correct level.
d) Clean the casing spigot and gasket position
mating surfaces.
e) Fit a new casing gasket [4590.1].
f) Install the pump casing with a new casing to
discharge gasket [4590.2].
g) Install casing hexagon screws [6570.1] to the
specified torques.
h) Check impeller clearance against original setting,
or process requirement, and adjust as necessary.
(See section 6.7, Setting impeller clearance.)
i) Check freedom to rotate within pump casing.
6.11.6 Cartridge seal assembly (if fitted)
a)
To set, or reset, a cartridge seal having a PTFE
setting ring-throttle and no separate setting clips,
finger tighten the seal cover stud nuts, then fully
torque up the sleeve screws.
b) Torque up the seal cover stud nuts.
6.11.7 Coupling, motor and ancillaries
a) Reconnect pump ancillary fittings and piping.
b)
Install pump into sump and connect up remaining
fittings and piping.
c) Re-check freedom of shaft to rotate by hand.
d) If pump has an oil lubricated thrust bearing, ensure
the oil breather and oiler are assembled in their
correct tappings as shown below and fill with the
correct grade and quantity of oil through the oiler.
e) Re-install motor (check for correct rotation) and
then fit coupling drive element and guards.
f) If all is correct continue with the procedure described
under section 4, Installation and section 5,
Commissioning, start-up, operation and shutdown.