10
7. Installation
Before installation check that
•
the booster set corresponds to the one ordered
•
no visible parts have been damaged.
7.1 Mechanical installation
7.1.1 Location
The booster set must be installed in a well ventilated room to
ensure sufficient cooling of the pumps and control cabinet.
The booster set must have a 3 feet clearance in front and on the
two sides for inspection and dismantling.
7.1.2 Pipework
Arrows on the pump base show the direction of flow of water
through the pump.
The pipework connected to the booster set must be of adequate
size. Either end of the manifold can be used to connect the
piping, however, it is not recommended or allowed by accepted
codes to have piping under the control panel. Apply sealing
compound to the unused end of the manifold and fit the screw
cap. For manifolds with flanges, fit a blanking flange with gasket.
To achieve optimum operation and minimize noise and vibration,
it may be necessary to consider vibration dampening of the
booster set.
Noise and vibration are generated by the rotations in the motor
and pump and by the flow in pipework and fittings. The effect on
the environment is subjective and depends on correct installation
and the state of the other parts of the system.
If booster sets are installed where the first consumer on the line is
close to the booster set, it is advisable to fit expansion joints on
the suction and discharge pipes to prevent vibration being
transmitted through the pipework.
Fig. 4
Sketch showing the position of expansion joints, pipe
supports and machine shoes
All nuts should be checked and re-tightened if necessary prior to
start-up.
The pipes must be fastened to parts of the building to ensure that
they cannot move or be twisted.
7.1.3 Foundation
The booster set should be positioned on an even and solid
surface, for instance a concrete floor or foundation. If the booster
set is not fitted with machine shoes, it must be bolted to the floor
or foundation.
7.1.4 Vibration dampers
To prevent the transmission of vibrations to buildings, it may be
necessary to isolate the booster set foundation from building
parts by means of vibration dampers.
The right damper varies from installation to installation, and a
wrong damper may increase the vibration level. Vibration
dampers should therefore be sized by the supplier of vibration
dampers.
If the booster set is installed on a base frame with vibration
dampers, expansion joints should always be fitted on the
manifolds. This is important to prevent the booster set from
"hanging" in the pipework.
7.1.5 Expansion joints
Expansion joints are installed to
•
absorb expansions/contractions in the pipework caused by
changing liquid temperature
•
reduce mechanical strains in connection with pressure surges
in the pipework
•
isolate mechanical structure-borne noise in the pipework
(only rubber bellows expansion joints).
Fit expansion joints at a distance of minimum 1 to 1½ times the
nominal flange diameter from the manifold on the suction as well
as on the discharge side. This prevents the development of
turbulence in the expansion joints, resulting in better suction
conditions and a minimum pressure loss on the pressure side. At
high water velocities (> 10 ft/sec) it is advisable to install larger
expansion joints corresponding to the pipework.
Fig. 5
Examples of rubber bellows expansion joints without
and with limit rods
Expansion joints with limit rods can be used to minimize the
forces caused by the expansion joints. Expansion joints with limit
rods are always recommended for flanges larger than 6 inches.
The pipework should be anchored so that it does not stress the
expansion joints and the pump. Follow the supplier’s instructions
and pass them on to advisers or pipe installers.
Warning
Installation and operation must comply with local
regulations and accepted codes of good practice.
Note
Hydro MPC is not designed for outdoor
installation and must not be exposed to direct
sunlight.
TM
03
21
54
38
05
Pos. Description
1
Expansion joint
2
Pipe support
3
Machine shoe
Note
Expansion joints, pipe supports and machine
shoes shown in the figure above are not supplied
with a standard booster set.
2
1
1
3
3
2
Note
As a rule unless protected, the weight of a
concrete foundation should be 1.5 x the weight of
the booster set.
Note
Expansion joints must not be installed to
compensate for inaccuracies in the pipework
such as center displacement of flanges.
TM
0
2
4
981
1
902
-
TM
02
49
79
19
02
www.motralec.com / [email protected] / 01.39.97.65.10
