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7
INSTALLATION
CONNECTION
7.1 LOCATION
Equipments that will be used in a ATEX zone should be
certified accordingly and should fully comply with applicable
regulations.
The choice of the pump location should permit a proper cooling of the
motor and should respect following limits :
Location will be chosen to ensure space reservation for maintenance
and inspection.
Check that there is ample overhead for lifting and that lifting devices are
available.
7.1.1
FOUNDATION
Pump set can be installed on various types of foundations (on a concrete
ground, on a foundation concrete block, on a steel framework, ...). It is
the responsibility of the end user to select proper pump foundation
type. Noise level and vibrations transmitted by the machine depend on
the quality of foundation.
Following rules are general instructions that should be respected :
- Base frame or pump matting plate should be fastened to a rigid
foundation with no risk of distortion while the pump is running.
- Make sure that the foundation concrete is of sufficient strength (min
quality X0 to DIN 1045). Generally, the weight of foundation is around 3
times the pumpset weight. With pump set dimensions and concrete
density it is then possible to calculate the dimensions of the required
foundation block.
- Surface under pumpset should be flat and should not create any
distortion of base plate after tightening of foundations bolts. If surface
quality is not sufficient, add shims between ground and base plate.
Distortion on base plate surface should be limited to 0,4mm/m after the
baseplate is definitively fastened to foundations.
Coupling alignment is checked before shipment (pumps and
motor deliver ed on a common baseplate) If coupling is not
correctly aligned after installation works are done this indicates that the
baseplate has become twisted and leveling should be corrected by re-
shimming.
Even if foundation works have been done with care, it is necessary to
check coupling alignment after the baseplate is definitively secured to
the foundation.
7.1.2
ANCHORING
Chemical anchoring device should be preferred to fasten a baseplate on
an existing foundation.
Anchor bolts can be used if foundation block is to be built.
1 – Anchor bolt
2 – Baseplate
3 – Concrete foundation block
AND
ELECTRICAL
Folded steel fabricated baseframes will be grouted to insure its rigidity.
Using of shrink free grout is the most efficient. Grouting ensures correct
positioning of the baseframe and reduces vibrations transmission to civil
work. Foundation work surface preparation and leveling of baseframe
will be performed in the state of the art and should be done before
grouting of the baseplate.
Foundation bolts should be fully tightened only after the
grout has cured.
Installation without foundation :
1 – Intermediate plate
2 – Nut
3 – Leveling element
4 – Foot base
5 – Washer
6 – Fastening nut
7 – Washer
8 – Baseplate fastening screw
7.1.3
POSITIONING
Pump baseplate (cast iron base plate or fabricated steel baseframe)
should be installed horizontally to ensure bearings lifetime and proper
flow of pumped fluid.
7.1.4
COUPLING ALIGNMENT
Pumpsets assembled with a flexible coupling must be aligned after the
baseframe has been definitively fastened to the foundation. Use low
thickness shims (0,2 to 1 mm) to modify coupling alignment. Adjust the
motor height first. Sometimes it is necessary to add shims under pump
feet too.
Aligment of coupling should be performed with particular care
when the pumpset is installed in an hazardous area. Correct
alignment will avoid abnormal increasing of the pump and motor ball
bearings temperature.
Thermal expansion : the pump and motor will normally have to be
aligned at ambient temperature with an allowance for thermal
expansion at operating temperature. In pump installation involving high
liquid temperatures, alignment should be checked again when operating
temperature is reached (pump and piping). Alignment quality should be
checked just after machine shut down.
Pump and driver must be isolated electrically before alignment
operations are performed.
Pump and motor were aligned before dispatch. If it is necessary to
use very thick shims to adjust coupling alignment on site this
means that the baseplate is twisted. Leveling has to be modified.
Checking the coupling alignment :
Check distance between the two half couplings.
Check radial and axial deviation.
Several types of flexible couplings can be used. Refer to coupling
operating
instructions
misalignment limits.
Several methods can be used to make coupling alignment. Choice of a
method will depend on the type of equipments available on site. Two
operating methods are briefly described hereafter. They can be used if
basic metrology equipments are available :
11
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