Pump Flexible Installation And Connection - Grundfos LS 500-300-490E Installation And Operating Instructions Manual

3.2.1 Securing the baseplate
• After the concrete pad has been poured and set,
lower the pump base plate over the anchor bolts
and rest it on loose adjustment wedges or shims
placed near each anchor bolt and at intervals not
to exceed 610 mm along each side.
• Shims or wedges must be placed to raise the
bottom of the base 20-30 mm above the pad,
allowing clearance for grout. Level the pump
shaft, flanges, and base plate using a spirit level,
adjusting the wedges or shims, as required.
• Check to make sure that the piping can be aligned
to the pump flanges without placing any strain on
either flange.
• After pump alignment has been established,
attach nuts on foundation bolts and tighten them
just enough to keep the unit base plate from
moving. Construct a form or dam around the
concrete pad and pour grout in and around the
pump base, as shown in section Foundation.
Grout compensates for uneven foundation,
distributes the weight of the unit, and prevents
shifting. Use an approved, non-shrinking grout.
Allow at least 24 hours for this grout to set before
proceeding with piping connections.
• After the grout has thoroughly hardened, check
the foundation bolts and tighten if necessary.
Recheck the pump alignment after the foundation
bolts are secured.
Related information
3.2 Foundation
3.3 Pump flexible installation and
connection
There are two methods for pump flexible installation:
• Using damper and soft connector.
• Using anti-vibration pad and soft connector.
3.3.1 Using damper and soft connector
In order to prevent the vibration transfer to the nearby
buildings, we suggest to use the damper to segregate
the pump base from nearby buildings. If the pump
installed on the damper base, soft connectors must
be installed to the inlet and outlet pipe, it is propitious
to the pump's operation.
5
6
3
Base with damper and soft connector
Pos. Description
1 Damper base
2 Pipe support
3 Damper
4 Outlet
5 Inlet
6 Soft connector
Do not install the pump base plate on the
damper directly.
The selection and installation of damper
and damper base should follow the
supplier.
4
2
1
9