Flowserve CPXVC - Manual (Page 24)

CPXVC USER INSTRUCTIONS ENGLISH 26999930 03-11
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i) Fit cover [1220] and tighten the nut [6580.1] which
fixes the cover to the support column [1350].
j) Refit the coupling hub [7000].
6.11.4 Impeller and casing assembly
a) Fit a new gasket [4590.2] into the impeller using a
small amount of grease to hold it in place. Apply
anti-galling compound (which does not contain
copper) to the impeller thread to help subsequent
removal.
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 [4590.3].
g) Install casing hexagon screws [6570.1] to the
specified torques.
h) Check impeller rear 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..
6.11.5 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.
6.11.6 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) Re-install motor (check for correct rotation) and
then fit coupling drive element and guards.
e) If all is correct continue with the procedure described
under Section 4, Installation and section 5,
Commissioning, start-up, operation and shutdown.