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Grundfos LS User Manual

Grundfos LS
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3.2.5 Foundation and preliminary alignment
The foundation and preliminary alignment procedure
has four steps:
1. pouring of foundation
2. shimming of base frame
3. preliminary alignment
4. grouting.
Pouring of foundation
We recommend the following procedure to ensure a
good foundation:
1. Pour the foundation without interruptions to within
19-32 mm of the final level. Use vibrators to
ensure that the concrete is evenly distributed. The
top surface must be well scored and grooved
before the concrete sets. This provides a bonding
surface for the grout.
2. Embed anchor bolts in the concrete as shown in
figure below. Allow enough bolt length to reach
through grout, shims, lower base frame, nuts and
washers.
10
8
7
65
4
1
2
3
9
TM075514
Typical anchor bolt design
Pos. Description
1 Bolt length above base frame
2 Thickness of base frame
3 19 to 32 mm allowance for grout
4 Washer
5 Lug
6 Pipe sleeve
7 Top of foundation left rough
8 Wedges and shims left in place
9 Base frame
10 5 to 10 mm
Let the foundation cure for several days before the
base frame is shimmed and grouted.
Shimming of base frame
TM040381
Shimming of base frame and levelling of pump
1. Lift/jack up the base frame to the final level 19-32
mm above the concrete foundation, and support
the base frame by means of blocks and shims,
both at the anchor bolts and midway between
bolts. See figure above.
2. Level the base frame by adding or removing
shims under the base frame. See figure above.
3. Tighten the anchor bolt nuts against the base
frame. Make sure the pipes can be aligned to the
pump flanges without putting strain on the pipes
or flanges.
8
English (GB)

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Grundfos LS Specifications

General IconGeneral
TypeSubmersible Pump
Protection classIP68
Frequency50 Hz
ApplicationDrainage
Liquid Temperature0 °C to 40 °C
Seal TypeMechanical seal

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