Connection Of Pipings To The Pump; Coupling; Drive - Lowara TDB Série Instructions Pour L'installation Et L'emploi

Installation, Operating and Maintenance Instruction
The alignment must be carried out with the
utmost care and attention, so that the unit will
operate without failure. If you do not pay
attention to this hint you will lose your warranty!
If vibrations are transmitted to the foundation
from adjoining components, it must be guarded
through adequate vibration damping padding
(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
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 3.4.
5.2.1 Suction and discharge pipe
The pipes must be of a size and design that liquid
can flow freely into the pump and that the pump
functions without problems. Particular attention is
to be paid to ensuring that suction pipes are
airtight and that the NPSH values are observed.
Under suction lift condition laid the suction pipe in
the horizontal section towards the pump so that it
is slightly inclined upwards so that no air traps
occur. Under positive suction head condition
install the suction pipe work slightly declined
towards the pump. Do not install fittings or
elbows right before the suction nozzle.
When laying the pipes, make sure that the pump
is accessible for maintenance, installation and
disassembly.
Notice "Permitted Forces on Flanges"
If expansion joints are used in the pipes, they
have to be supported in such a way that the
pump is not loaded unduly high because of the
pressure in the pipes.
Before connecting up to pump: remove protective
coverings from suction and discharge branches.
Before starting up, the pipe system, fittings and
equipment must be cleaned to remove weld
spatter, scale etc. Any pollutants are to be
completely removed from pump units that are
directly or indirectly connected to drinking water
systems before being installed and taken into
use.
To protect the
mechanical seals) against foreign impurities, it is
recommended that a sieve, 800 micron, is
installed in the suction/intake pipe when the
motor is being started up.
If the pipe system is tested with the pump
installed, do not exceed the maximum permitted
casing pressure of the pump and/or shaft sealing.
TDB, TDV
circumstances, and
shaft sealing (especially
page 59
When emptying the pipe after the pressure test,
make sure that the pump is treated properly
(danger of rust and problems when starting up).
5.2.2 Additional connections
Any required sealing, flushing or cooling pipe
connections must be installed. Please consult the data
sheet to see which pipes, pressures and amounts are
necessary. See the drawings in the enclosures for the
location and size of the connections to the pump.
These
function!
should
It is recommended that a pipeline is installed to take
off any leakage from the shaft seal. For connection,
see appendix, "Connections".

5.3 Coupling

Make sure that nobody can start the motor
during work on the coupling.
According to Accident Prevention Regulations,
the pump unit may only be operated when the
coupling guard is mounted.
With pump units (i.e. pump with motor) supplied
complete, no work is required on the coupling before
use.
5.3.1 Coupling – TDB Design
The pump and motor are rigidly connected together,
meaning that no adjustment work is required if the
motor is replaced properly.
5.3.2 Coupling – TDV Design
If the pump unit is not completely assembled until it
reaches its place of use and no separate operating
instructions have been supplied by the manufacturer,
you should proceed according to the following points:
Before starting installation, carefully clean shaft
ends and coupling components.
Pull coupling onto shaft end, do not hit. The
coupling may be heated beforehand in an oil bath
to approx. 100° C (pulling on is then easier).
Remove rubber packs from coupling section first.
Keep the axial distance from both of the coupling
halfs.
The coupling sections must be flush with the
shaft end surfaces.
Mount coupling guard.
The Operating Instructions of the manufacturer
must be followed.
Aligning of the coupling is not necessary.

5.4 Drive

On selecting the motor size care has to be taken, that
the requirements acc. to ISO 5199 are fulfilled.
The Operating Instructions of the manufacturer
must be followed.
Model TDB, TDV
connections are essential for the
Revision 01
Issue 06/2012