D.
GROUTING
• Build forms to confine the grout. The forms must be
securely anchored and shored.
2.
Remove water and waste material from foundation bolt
holes and clean off and dampen the foundation slab.
3.
Pour grout through holes provided in the baseplate.
A recommended grout mixture in one part iron base aggre-
gate. one part Portland cement and one part coarse, clean
sand by weight. Approximately 13/4 to 2 gallons of clean
water is required for each 100 pounds of mix. Use sufficient
water to make the mix placeable.
4.
Remove air pockets by working and rodding the grout
through holes in the baseplate.
5.
After grout is set, tighten nuts on the foundation bolts.
Do not remove leveling plates and shims.
E. INSTALLING DRIVER ON BASEPLATE
I. If a motor with sleeve bearings is to be used, it must be
mounted so that there is at least 1/8 inch clearance between
the thrust collars on the motor shaft and the face of the
bearings. The following procedure is usually recommended
when the pump is connected directly to the motor:
a.
Measure the total lateral movement of the motor
rotor.
It
should be approximately 1/2 inch.
b.
Pull the rotor all the way forward toward the pump.
c.
Move the rotor 1/8 inch back from the full forward
position.
2. Adjust the position of the driver so that the distance be-
tween the pump and driver shaft agrees with the callout on
the foundation drawing.
3. The various coupling types and their uses are as follows:
a.
Limited axial end float spacer type coupling, between
pump and electric motor with sleeve bearings.
b.
Standard spacer type coupling between pump and
steam turbine, between pump and fluid drive, or between
pump and electric motor with ball bearings.
c.
Limited axial end float standard type coupling, be-
tween fluid drive and electric motor.
4. A spacer type coupling next
to the pump
permits the
pump half coupling to be removed or installed without dis-
turbing the position of the pump or driver. The thrust bear-
ing on the pump or fluid drive will prevent thrust collars on
the motor shaft from touching
the motor bearing faces.
This will prevent overheating or damage to the motor
heari ngs.
5.
Check alignment with a straight edge across the coup-
lings. The driver will be 3116 inch low before shimming.
F. ALIGNMENT OF DRIVERS MOUNTED AT FACTORY
It is always necessary to check, and correct if necessary, the
alignment of the pump and driver shafts after the base has
been grouted in at its permanent installation.This alignment
check must .be performed even though the pump and driver
may have been mounted and aligned at the factory prior to
shipment. The principal reasons for checking alignment
after installation are as follows:
a.
Distortion of the base may have occurred as a result
of handling during shipment or unloading.
b.
It is impractical to level base plates at the installation
site as precisely as they are leveled at the factory when the
drivers are mounted and aligned. Thus, minor distortion of
the baseplate will occur when it is bolted to the foundation,
which in turn will produce some misalignment.
c.
The factory alignment of pumps is made without
piping loads imposed upon the inlet and discharge connec-
tions. When installation is complete an alignment adjustment
is required to compensate for strain in the pump and bed
plate caused by loads transnitted from the user's piping
system.
d.
Factory alignment of pumps is performed at an aver-
age temperature of 75°F (24°C). Operation of pumps at less
than or greater than this temperature causes alignment
change due to thermal affects on pump pedestal position.
Final alignment should be made with pumps
at
the actual
operating temperature.
G. ALIGNING PUMP AND DRIVER BY USER (See Fig. 3)
I. Clamp a dial indicator on the driver half coupling. The
indicator bracket must be rigid to insure accuracy of the
dial indicator readings.
2.
Set the indicator button on the outside diameter of the
pump coupling hub and align the hubs to within .002 inch
total indicating reading.
3.
Set the indicator button on the face of the hub and
align the faces parallel at all points.
4.
To check alignment, clamp the dial indicator to the
pump half coupling and take readings on the outside dia-
meter and the face of the driver coupling hub.
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