Wilo 4/5 TYPE 17, Инструкция по установке и эксплуатации

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Installation and operating instructions WILO Mather and Platt – Sump Pumps 19
6. Preparing Foundation
The foundation should be sufficiently substantial to absorb any
vibration and to form a permanent, rigid support for the mount
plate. The strength of foundation must be adequate for the
static and dynamic loads imposed and depend upon local soil
conditions.
The foundation must get large dimensions. Generally, the
weight of the foundation is around 2 to 3 time the pump set
weight. In building the foundation, the top of the foundation
should be left approximately equal to mount plate thickness
plus 25 mm for packers/shims below, to allow for grouting.
Foundation bolts of the proper size should be embedded in the
concrete, located by template.
Note:
Leave top of foundation rough! Do not finish with trowel.
•
A pipe sleeve about 2 ½ diameters large than the bolt should
be used to allow movement for the final positioning of the
bolts. For installations where a low level of noise is expected,
built the foundation in a pit lined with appropriate insulation
material in order to avoid vibration transmission to the
ground.
•
Ensure that both mount plate faces are parallel within
allowable value, free from any distortion as shown in fig. Spirit
level, straight edge along with engineer’s ma ster level can be
used to check flatness.
6.1 Mounting Plate Installation
Mount plate has machined surfaces on both top and bottom
sides. The top surface of foundation over which the mount
plate rests must be left rough to assist in keying the final
grout. After the mount has been leveled by positioning steel
packer plates at suitable intervals on the foundation surface,
ensure that the surface beneath each packing plate is solid
by crushing any protrusion or alternatively each packer plate
may be placed on a thin screen of cement.
6.2 Leveling of Mounting Plate
CAUTION!
The machined surfaces where level is being checked must be
clean and free from paint, burrs etc.
•
Provide suitable packer plate (25 mm to 30 mm thick) or
taper wedges on the foundation one each of either side of
foundation bolt. It is advisable to provide thin layer of
cement below the packer plate.
•
Lift the mount plate and lower it on the foundation. Insert
the foundation bolts through the holes in the mount plate
and screw a nut on to each bolt until the bolt protrudes
through the nut by a length, which is sufficient to
accommodate a lock nut.
•
Adjust the level of the mount plate by inserting shims
between the mount plate and the packer plate until the
mount plate is leveled. And support on all the packing
wedges at suitable height. For checking the levels &
straightness, I-beam type straight edge should be used
extensively in conjunctions with engineer’s master level.
Level should be achieved within 0.05 mm. Also ensure that
elevation of baseplate is adjusted suitably.
•
For grouting use rich mix of 1:1:2 of cement, sand and
gravel below 25 mm, alternatively quick setting grout mix
can be used.
•
When the grout has set, gently but firmly tighten the
foundation bolts. Do not distort the mount plate or loosen
the foundation bolts in the grout by excessive tightening.
Carefully re-check the level of the mount plate and make
adjustments that are necessary by fine shimming. Ensure
that the mount plate is leveled, as per the site datum level,
various centerlines etc.