Xylem LSNIH - Manual (Page 11)

Installation, Operating and Maintenance Instruction Model LSN
LSN 100-english page 9 Revision 01
Article No 771076024 Issue 01/2010
4.2 Storage / Conservation
Pumps or units, which are stored over a longer period
before start-up (max. 6 months), must be protected
from moisture, vibrations and dirt (e.g. by wrapping in
oil paper or plastic). Pumps must basically be stored in
a place where they are protected from the weather,
e.g. under dry cover. During this time, all suction and
discharge branches and all other intakes and outlets
must be closed with dummy flanges or plugs.
For
longer periods of storage conservation
measurements at machined surfaces and packing with
moisture protection can be necessary!
5. Mounting / Installation
5.1 Mounting of Pump / Unit
5.1.1 Mounting of pump on a base frame
The pump and motor (= pump unit) must be provided
with a base frame made of steel or cast iron or a
fabricated (welded) frame, where this does not exist
already or if it is not included in the delivery. This base
frame must be placed on a foundation which can
withstand all loads that arise during operation (refer to
chapter 5.1.2).
When mounting the pump onto the base frame the
following must to be noticed:
The base frame must be solid, so that there won´t
occur any twists or vibrations during the operation.
The mounting surfaces of the pump feet and
motor on the base frame must be flat (machining
is recommended). Bracing of the pump leads to
premature breakdown of the pump and to a loss of
warranty.
The drillings for the pump mounting must be in
such a way, that safe fastening is guaranteed.
Between pump and motor shaft an adequate
space must be left depending on the used
coupling, refer to chapter 5.3.
Between pump and base frame there must be an
adequate shimming, so that in the case of
replacement of the pump the equal height
between bottom and centerline can be adjusted
(recommended vertical adjustment 4 to 6 mm).
Align pump and motor, refer to chapter 5.3, as
well.
5.1.2. Mounting the unit to a foundation
The place, where the pump is mounted must be
prepared acc. to the dimensions of the dimensional
drawings. The concrete foundations should have
sufficient firmness acc. to DIN 1045 or equal standard
(min. BN 15), to ensure a secure, functional mounting.
The concrete foundation must have set, before the
unit is errected. Ist surface must be horizontal and
even.
Sufficient space must be provided for
maintenance and repair work, especially for
replacing the drive motor or the complete pump
unit. The motor fan must be able to take in
enough cool air, and the intake grille must
therefore be at least 10 cm away from any wall,
etc.
For the set of anchor bolts according recesses
must be provided. If that is not the case, concrete
expansion bolts resp. epoxy capsle anchor bolts
can be used.
When mounting the pump on the foundation it
must be adjusted at the discharge nozzle by
means of a spirit-level (at discharge nozzle). The
permitted deviation is 0,2 mm/m. After inserting
the foundation bolts they must be cast in the
foundation with concrete. After setting of the grout
the coupling alignment must be checked
according
chapter 5.3.1 and possible
misalignments must be corrected by adjusting
foundation frame in the area of the drive motor.
The smoothness of the base frame must be 0,2
mm/m before it is filled up resp. fastened. For
adjustment leveling shims or leveling screws
(optional, not delivered standardwise) can be
used. Levelling shims must be inserted next to the
foundation anchors and must lie plainly. After that
fasten foundation bolts symmetrically but only
slightly. Fill in base frame with non shrinking grout.
Notice:
Avoid air bubbles (e.g. by vibrating).
Check that the grout has properly set and
hardened.
Take care for the after-treatment of the concrete
acc. to DIN 1045.
After setting, tighten the foundation anchor evenly and
firmly. Check alignment of coupling acc. to chapter
5.3.1 and re-adjust, if necessary. Further, check that
all screws between pump / motor and the base frame
fit snugly.
Although the original LSN-base frames are designed
solidly, the filling in of the adjusted base frame up to
the rim is recommended.
If vibrations are transmitted to the foundation from
adjoining components, it must be guarded through
adequate vibration damping paddings (vibrations
from outside can impair the bearing).
To prevent vibrations being transmitted to
adjoining components, the foundation should be
laid on a suitable insulating base.
The size of these insulating pads will vary,
depending on circumstances, and should
therefore be determined by an experienced
specialist.
5.2 Connection of Pipings to the Pump
The pump must not be used as fixed point for
the piping. The permitted piping loads must not
be exceeded, refer to chapter 3.5.