Flowserve QLQ Vertical Worthington - Manual (Page 51)

QLQ, QLQC USER INSTRUCTIONS ENGLISH 87900027 – 06/14
Page 51 of 61
d) Slide back coupling and install the retaining ring.
e) Fit the O-ring in place, install and bolt column to
its correspondent flange.
f) Repeat above steps to install the complete
shafting and all columns.
6.9.3 Pump completion
a) Fit O-ring in place, install and bolt discharge head
to top column.
b) Fit O-ring in place, install and bolt stuffing box to
discharge head.
c) If the pump is provided with packing seal,
assemble packing. If the pump is provided with
mechanical seal, install mechanical seal cartridge
and bolt seal end plate in position.
At this stage do not lock
mechanical seal sleeve to pump shaft and do not
remove locking tabs.
d) If rigid coupling is provided, install rigid coupling
key, half coupling, coupling nut and coupling nut
screws. Align the coupling hubs with a max
tolerance of 0.025 mm (0.001 in).
e) If provided, install rigid coupling spacer.
f) Push pump shaft until rotor rests on lower suction
case.
g) Install motor stool.
h) If provided, install complete thrust bearing
assembly with rigid half coupling in place. Bolt
rigid coupling spacer. If no rigid coupling is
provided, install the bearing house directly on the
shaft.
i) If flexible coupling is provided, install flexible
coupling key and pump half coupling. Pre-heat
coupling hub to approx. 150 °C (300°F).
6.9.4 Pump re-installation
a) Lift pump vertically and lower it down into
foundation opening. Refer back to section 2.3.
b) Secure pumps discharge head to foundation
plate or discharge beams, whichever is provided.
c) For pump in can, secure pump discharge head to
can flange.
d) Bolt pump nozzle(s) to discharge ( and suction- in
case of pump in can) piping.
e) Set the driver as described under Chapter 4 of
this manual.
f) Check driver/driven shaft alignment and
assemble the coupling between the two shafts.
g) Position pump shaft axially acting on adjusting
nut so that space between coupling halves is as
specified on pump elevation drawing.
h) Screw adjusting nut locking screws.
i) If the pump id provided with mechanical seal,
lock mechanical seal sleeve to pump shaft and
remove locking tabs.
j) Replace all auxiliary piping, systems,
instrumentation and pipe plugs.
k) If the pump has a thrust bearing in the pump,
install oilier and fill thrust bearing house to correct
oil level (refer to section 5.3).
l) Install coupling guards.
m) Refer to Chapter 5 for commissioning and
starting procedure.