Xylem LN - Manual (Page 53)

Installation, Operating and Maintenance Instruction Model L, LN
Page 49
 Lifting devices (e.g. fork-lift truck, crane, crane
device, pulleys, sling ropes, etc.) must be
sufficiently strong and must only be used by
authorized persons. The weight of the pump /
pump unit is given in the data sheet.
 The pump / pump unit may only be lifted by solid
points such as the casing, flanges or frame.
Picture 2 shows the correct method of carrying by
crane.
pic 2
Do not stand underneath suspended loads.
Take note of the general regulations on
prevention of accidents.
The pump / pump unit must be secured against
tipping over and slipping until it has been fixed
in its final location.
Sling ropes must not be fixed to ends of shafts
or the ring loops of the motor.
Slipping out of the pump / pump unit of the
transport lifting device can cause damages to
persons and things.
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.
Drained pumps
 Turn shaft at least 1x week (do not switch on
because of dry running).
 Replace bearings after 4 years.
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 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 (see
chapter 5.1.2).
When mounting the pump unto the base frame the
following must be noticed:
 The base frame must be solid, so that there won’t
occur any twists or vibrations during the operation
(resonance).
 The mounting surfaces of the pump feet and the
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 4-6 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 erected. Its 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 capsule anchor bolts
can be used.
 When mounting the pump unit on the foundation it
must be adjusted at the discharge nozzle by
means of a spirit-level. 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 levelling shims or levelling screws