Flowserve QLQ Vertical Worthington - Manual (Page 21)

QLQ, QLQC USER INSTRUCTIONS ENGLISH 87900027 – 06/14
Page 21 of 61
4.1.5 Installation of pumps that are shipped
unassembled
If the pump has been shipped unassembled, refer to
dedicated special instruction for pump installation
included in the IOM book, or ask for Flowserve
support/ supervision for a correct installation. General
guidelines for pump assembly are provided in Section
6.9 of this manual.
Parts and accessories may be placed
inside shipping containers or attached to skids in
individual packages. Inspect all containers, crates
and skids for attached parts before discarding.
If headroom permits, it is recommended
that the pump is assembled in horizontal position and
lowered as one complete unit into the sump or can
4.1.5.1 Uncrating and cleaning of unassembled
pump
a) Clean the parts of any dirt, packing material and
other foreign matter.
b) Flush the pump inside and outside with clean
water.
c) Clean all machined surfaces.
d) Remove any rust spots found on the machined
surfaces with fine emery cloth.
e) Clean all threaded connections and any accessory
equipment.
f) Kerosene is recommended as the best solvent for
rust preventive applied by Flowserve, however any
coal tar distillate may be used as a solvent.
Be sure that all traces of rust
preventive are removed from the discharge (and
suction) flanges, the exposed shafting and all coupling
surfaces.
Lineshaft when shipped separately
should be left in the crate to avoid damage or loss of
straightness.
4.1.6 Special Instruction for installation of pumps
with thrust bearing and mechanical seal
The pumps with both mechanical seal and thrust
bearing have two separate spacers (rigid and flexible)
and require special instruction for alignment and rotor
axial positioning (see also sections 4.5.3.3~4.5.3.4).
Once the suction head is fixed with the bearing
support assembled, proceed as follow:
a) Place the spacer of the rigid coupling without
fixing it with the bolts.
b) Align the two hubs of the rigid coupling located
on the top of the pump shaft and below the thrust
bearing support by measuring with a dial
indicator the displacement between the rigid
coupling upper hub and the external machined
surface of the stuffing box. Alignment tolerances
are:
0.050 mm (0.002 in.) TIR
c) Do not tighten the rigid coupling bolts.
d) If not already done, install the flexible coupling
hubs on the motor shaft and the thrust bearing
shaft.
e) Lift the motor by proper equipment and carefully
place it on the motor stool.
f) Check the Distance Between Shaft Ends (DBSE)
between the hubs of the flexible coupling, and
compare it with the value stated on the GA
drawing.
g) By turning the regulating nut on the top of the
bearing support, regulate the DBSE in
accordance with the value stated on the general
arrangement drawing.
h) Proceed with alignment of the flexible coupling
hubs in the same way as described above.
i) Once aligned, install the flexible coupling spacer,
referring to the manufacturer instruction, and fix it
by tightening the bolts.
j) Not having fixed the rigid coupling spacer, the
rotor is placed in its lower position. By turning the
regulating nut on the rigid coupling regulate the
position of the rotor as to have 4÷5mm (0.16÷0.2
in) between the upper coupling hub and the rigid
coupling spacer.
k) Fix at this stage the bolts of the rigid spacer. By
tightening them, the rotor will be lifted in its
correct position.
4.1.7
Installation of drivers
Drivers will come with either hollow shaft or
solid shaft as specified on the order/contract.
Choose the correct installation procedure from the
following paragraphs and the driver manufacturing
instructions.
Reverse rotation with the pump shaft
connected can cause extensive damage to the pump.
Always check rotation before connecting driver to
pump.