2 Installation
2.1 Location
Pumping unit should be placed as close as practical to the source of supply. Always allow sufficient head
room to remove the upper half casing of the pump and the rotating element. Floor space allotted to the
pumping unit should be sufficient for inspection and maintenance.
2.2 Prepare the foundation
1.
The foundation should be substantial in order to absorb any vibration and to form a permanent rigid
support for the bedplate. A concrete foundation poured on a solid footing, using a one-three-five
mix, of a liberal thickness to support the pumping unit is satisfactory.
2.
Foundation Bolts:
a) The location and size of the foundation bolts is shown on the outline assembly drawing sup-
plied for the pumping unit.
b) Each bolt should be installed with a pipe sleeve around it - to allow for adjustment. The inside
sleeve diameter should be 2½ to 3 times the diameter of the bolt. Place a washer between bolt
head and sleeve to hold bolt in position. Stuff waste around foundation bolts to prevent con-
crete from entering between the bolt and pipe sleeve. See
Figure 2: Foundation on page 10
.
c)
The foundation bolts should be of sufficient length so that they project through the nut approxi-
mately ¼" after allowance has been made for grouting (¾" to 1½"), the thickness of the bed-
plate, and the thickness of the foundation bolt nut. See
Figure 2: Foundation on page 10
Figure 2: Foundation
3.
Preparing Foundation for Mounting:
Prior to setting unit upon the foundation, clean the top surface of concrete.
4.
Mounting unit on foundation
a) Put the pumping unit in place on the wedges. The wedges should be placed at four points, two
below the approximate center of the pump and two below the approximate center of the driver
(See Figure 2). Some installations may require additional wedges near the middle of the bed-
plate.
b) Disconnect coupling between pump and driver if other than insert-spider type.
c)
By adjustment of the wedges, bring the unit to an approximate level and provide for the proper
distance above the foundation for grouting (¾" to 1½"). Plumb the suction and discharge flang-
es. By further adjustment of the wedges, bring the coupling halves into reasonable alignment.
Check by method described in Section
2.3 Alignment - initial on page 11
, steps 4 through 6.
d) After the wedges have been adjusted, tighten foundation bolts evenly but only finger tight.
2 Installation
10
Model 3755 Installation, Operation, and Maintenance Manual
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