Flowserve BP User Manual
Page 15
BP USER INSTRUCTIONS ENGLISH 85392725 10-09 (E)
Page 15 of 44
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Fig. 4-3
d) After the mortar has solidified, locate the other
necessary parallel liners and the taper liners on
the parallel liners that have been already
installed.
e) Install the base plate on the liners. Adjust the
position and height of base plate.
f) Perform the levelling of base plate by adjusting
the taper liners under the base plate. Place the
spirit level on the machined surface of the base
plate(pump and driver mounting pads), or on the
discharge flange to level in the direction of pump
shaft and in the right angle direction of it. The
maximum level tolerance shall be 0.2 mm per
metre (0.0025 in. per ft).
g) Tighten the anchor bolts firmly. Re-check the
levelling of plate and adjust it if necessary.
h) Disconnect the coupling halves by removing the
coupling bolts. Then remove the coupling
spacer, carry out the preliminary alignment
between the pump and driver in accordance with
Section 4.5 “Initial Alignment”
Coupling bolts must be left out of the
coupling until a final alignment check has been made.
4.4.2 Mortar
Pour
Carry out the grouting as follows.
a) The typical mixture for grouting in a pump base
plate is composed of one part pure portland
cement and two parts building sand with
sufficient water to cause the mixture to flow freely
under the base plate.
b) After alignment work, spot-weld to the taper liners
and parallel liners.
c) Build the wooden form around the outside of the
base plate to contain the grout.
d) Well-saturate with water on the top of the chipped
concrete foundation.
e) Pour mortar through the grout holes on the base
plate and fill the inside of the base plate. Use a
stiff wire to work the grout and release air
pockets.
f) Cover the exposed surfaces with wet burlap
which causes slow drying and prevents cracking.
g) Remove the wooden form and smooth the
exposed surfaces.
h) It takes several days mortar to solidify
completely, although it depends upon ambient
temperature, humidity and mortar composition.
i) Connect the suction and discharge pipes to the
pump nozzles. Adjust the pipes so that they do
not transmit excessive piping force to the pump.
j) Re-check the alignment after the pipes have
been connected and realign if necessary.
k) Install the coupling spacer and tighten the
coupling bolts.
In general, it is not necessary to align by giving a
centre difference between pump and driver shafts, in
even high temperature service. However, it is
desirable to check the alignment at hot condition
immediately after initial operation at actual pumping
liquid and temperature has completed.
If a centre difference of more than 0.15 mm (0.003in)
has been admitted as the result of above check,
compensation should be made for change between
centres of pump and driver shafts.
Then, in case that comparative, high vibration on
pump or driver is admitted during operation, carry out
re-alignment at hot condition immediately after the
pump stopped, at first.
4.5 Initial
alignment
4.5.1 Thermal
expansion
The pump and motor will normally
have to be aligned at ambient temperature with an
allowance for thermal expansion at operating
temperature. In pump installations involving high
liquid temperatures, the unit should be run at the
actual operating temperature, shut down and the
alignment checked immediately.
4.5.2 Alignment
methods
Pump and driver must be isolated
electrically and the half couplings disconnected.
The alignment MUST be checked with
a dial indicator.
Although the pump will have been aligned at the factory
it is most likely that this alignment will have been
disturbed during transportation or handling. If
necessary, align the motor to the pump, not the pump to
the motor.
Alignment is achieved by adding or removing shims
under the motor feet and also moving the motor
50-70mm
(2-2.75in)
50-70mm
(2-2.75in)
Anchor bolt
Liner
Liner
≈50mm (2in)
Mortar