5.6.2 Levelling of the product with base frame
Follow the steps below to level the base frame:
1. Lift or jack up the base frame to the final level 0.75 - 1.26 inches
(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.
TM085820
0.75 - 1.26 inches (19-32 mm).
2. Level the base frame by adding or removing shims under the
base frame.
TM085821
3. Tighten the anchor bolt nuts against the base frame.
4. Make sure the piping can be aligned to the pump flanges
without putting strain on pipes or flanges.
5.7 Grouting
If you have questions or doubts about the grouting, please
contact an expert on grouting.
Apply grout if needed. NB pumps do not require grouting to
maintain shaft alignment, but grouting will increase pump stability
within the pipe system. Grouting compensates for an uneven
foundation, distributes the weight of the unit, dampens vibrations
and prevents shifting. Follow the steps below to do the grouting.
1. Use an approved, non-shrinking grout.
2. Embed reinforcing steel bars into the foundation by means of 2K
anchor adhesive glue.
3. The number of steel bars depends on the size of the base
frame, but we recommend that you distribute a minimum of 20
bars evenly over the whole area of the base frame.
TM040491
Example of foundation with minimum 20 bars
4. The free end of the steel bar must be 2/3 the height of the base
frame to ensure a proper grouting.
TM086094
5. Soak top of concrete foundation thoroughly, then remove
surface water.
6. Ensure proper shuttering at both ends of the base frame.
TM085936
A: shuttering
7. If necessary, check the levelling of the base frame again before
grouting.
8. Pour non-shrinking grout through the openings of the base
frame until the space underneath the base frame has been filled
completely.
9. Fill the formwork with grout up to the base frame top level.
10. Allow the grout to dry thoroughly before attaching piping to the
pump. 24 hours is sufficient time with approved grouting
procedure.
11. When the grout has thoroughly hardened, check the anchor bolt
nuts, and tighten, if necessary.
18
English (US)
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