Grundfos Peerless Pump 8196 Series, Installation, Operation And Maintenance Manual

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SECTION II
INSTALLATION
II-A. LOCATION
Select a location for the pumping unit (pump, base plate, coupling and driver) which will:
(a) Be clean, well ventilated, properly drained and provide accessibility for inspection and maintenance (see
outline drawing for dimension). Outdoor installations may require protection from the elements,
particularly freezing.
(b) The suction supply system must provide the pump with Net Positive Suction Head (NPSH) equal to or greater
than that required by the pump at any capacity over the expected operating range. Ask your representative
for assistance if you do not understand how to calculate or measure suction supply system NPSH.
II-B. FOUNDATION
Concrete (reinforced as necessary or required) is most widely used for the foundation. In sufficient mass, it
provides rigid support, which minimizes deflection and vibration. It may be located on soil, structural steel or
building floors, provided the combined weight of the pumping unit and foundation does not exceed the allowable
bearing load of the support. Allowable bearing loads of structural steel and floors can be obtained from engineering
handbooks; building codes of local communities give the recommended allowable bearing loads for different types
of soil.
II-C. FOUNDATION BOLTS
Before pouring the foundation, locate the foundation bolts using a template frame and provide anchorage as shown
in Figure 1. See the outline drawings furnished with each pump for the exact location of the foundation bolts.
When pouring, allow for a grout thickness of % to 1-Yz inches between top of foundation and bottom of base.
Roughen top surface to provide a good bond of the grout.
II-D. MOUNTING AND LEVELING THE UNIT
Use qualified personnel (riggers) to lift or move unit at any time.
Never lift unit using hooks or slings on
shafts. Never place eyebolts in tapped holes except for removal of a part to perform service work.
When the unit is received with the pump and the driver mounted on the base plate, it should be placed on the
foundation and the coupling halves disconnected. The coupling should not be reconnected until the alignment
operations have been completed. The base plate should be supported on rectangular metal blocks and shims or on
metal wedges having a small taper. The support pieces should be placed close to the foundation bolts (Figure 2).
On large units, small jacks made of cap screws and nuts are very convenient. In each case the supports should be
directly under the part of the base plate carrying the greatest weight and spaced closely enough to give uniform
support. A spacing of 24 inches is suggested on medium size units. A gap of about 0.75 inches to 1.50 inches should
be allowed between the base plate and the foundation for grouting.
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