SPP Pumps Split Case Pumps - Manual (Page 8)

Manual No/Rev
W00-002E / 4
Pump Installation Guide
Our policy is one of continuous improvement and we reserve the right to alter specifications without giving notice.
Page 8 of 12
PUMP
MOTOR
PUMP
MOTOR
PUMP
MOTOR
mount the pumpset, mark the foundation
bolt positions and lift off the pumpset to give
access for drilling. Hang the anchor bolts in
their holes and lower the pumpset in
position having inserted the anchors into
their fixing holes.
When the pump is resting evenly on all
packers, check the coupling alignment and
record the initial dial indicator readings
Initial Alignment Readings
Taken Signed Date
Lateral TIR. ………….. Angular TIR. ………….
To check coupling alignment, refer to the
pump and coupling instruction manuals for
details of shaft alignment procedures and
tolerances, or proceed generally thus:
1 Lateral Alignment
Mount a dial gauge on
the motor shaft or
coupling
with the
gauge running on the
outer-machined
surface of the pump
coupling. Turn the motor shaft and note the
total indicator reading.
2 Angular Alignment
Mount a dial gauge on
the motor shaft or
coupling to run on a
face of the pump
coupling as near the
outside
edge as
possible. Turn the motor shaft and note the
total indicator reading.
3 Confirm Lateral Alignment
Mount the dial gauge
on the pump shaft or
coupling with gauge
running on the outer-
machined surface of
the motor coupling.
Turn the pump shaft
in the direction of
pump rotation, and note the total indicator
reading.
4 Adjustment
The motor must be shimmed and re-
positioned to align the shafts to well within
the coupling manufacturer’s specifications.
Note Poor alignment is a major factor
contributing to shortening of pump
bearing and seal life. It is recommended
that alignment is checked frequently and
maintained at below 10% of the
manufacturer’s specified figure.
As the pump and motor feet are accurately
machined, any discrepancy may be due to
foreign matter between any of the mating
faces. These should be checked for
cleanliness before assembly and before
resorting to using shims under the motor
flange.
Shaft alignment must be
checked again after the
final positioning of the pump unit and
connection to pipework as this may have
disturbed the pump or motor mounting
positions.
After allowing sufficient time for the bond to
cure, tighten the chemical anchor bolts to
the torque setting recommended in the
manufacturer's instructions, or for rag bolts,
tighten the nuts to the torque figures below.
Bolt Size 16 20 24
Torque Nm 95 185 320
After tightening the fixing
bolts check and measure
the coupling alignment and if the figures
have changed significantly, the baseplate
will have been distorted. Release the
anchor bolts and adjust the packers to
maintain the shaft level and the coupling
alignment within acceptable figures.
Bolted Down and
Alignment Confirmed. Signed Date
Lateral TIR. ………….. Angular TIR. ………….
3.7
Suction & Delivery Piping
Ensure that bolt grouting or chemical
anchors have been allowed to cure or dry
thoroughly before connecting any pipework.
Both suction and discharge piping should
be supported independently and close to
the pump so that no strain is transmitted to
the pump when the flange bolts are
tightened. Use pipe hangers or other
supports at intervals necessary to provide
support. When expansion joints are used in
the piping system, they must be installed
ATTENTION
ATTENTION