GB
BSV..EMT_ITT Rev2 - Operating Instructions
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Adequate drainage should be provided with
protection from water damage in the immediate
vicinity should a leak or spillage occur.
Adequate lighting should be provided for service,
inspection and commissioning.
6.3.1. Foundation
The set should be installed with anti-vibration
mounting pads and anti-vibration pipe coupling
especially in noise sensitive areas. Otherwise
install the set on a level concrete plinth which will
not distort or twist the base-plate, use shims if
required. Always install in a horizontal position and
use adequate fixings. Do not install on a wooden
substructure or any potentially flexible substructure.
6.4. Pipes
Ensure the insides of pipes are clean and
unobstructed before connection.
ATTENTION: The pipes connected to the booster
set should be secured to rest clamps so that they
do not transmit stress, strain or vibrations to the
booster set.
The pipe diameters must not be smaller than the
booster set connections.
Isolation valves should be fitted before the set
suction manifold and on the discharge manifold
after the set to allow the set to be removed without
a major loss of water in the system.
6.4.1. Suction pipe
The suction pipe must be perfectly airtight and be
led upwards in order to avoid air pockets.
With a booster set located above the water level
(suction lift operation) fit a foot valve with strainer
which must always remain immersed.
With the liquid level on the suction side above the
pumps (inflow under positive suction head) fit an
inlet gate valve.
For suction from a storage tank fit an anti-backflow
valve.
Follow local specifications if increasing network
pressure.
6.4.2. Delivery pipe
Fit a gate valve in the delivery pipe.
6.4.3. Diaphragm vessel
A diaphragm pressure vessel must always
be installed on the pump outlet.
For variable speed sets, vessels are used to
make the pressure more stable and to accumulate
some water to avoid pumps operation with small
consumption or leakage in the system.
Generally are used diaphragm vessels with
capacity of 10% of maximum flow, with a minimum
of 20 lt.
additional
vessel
4.93.369
20-24 liter
membrane vessel
variable
speed pump
BS
ball valve
pressure
gauge
pressure
transducer
1
2
1 = 20-24 liter membrane vessel.
Necessary to grant a good pressure reading and a proper
pump operation.
2 = additional vessel.
It is required to store a certain quantity of water to feed
little consumptions without having the pump to start (not
required for pumps with small motor powers).
6.4.4. Pressure relief valve
If necessary the customer must be provide,
on the delivery pipe, a pressure relief valve.
The installation must be provided when the
maximum pump pressure, plus the maximum
inlet suction head, exceeds maximum booster
set pressure or exceed maximum pressure of
the remaining components on the delivery pipes.
The valve must be dimensioned to be able to drain the
flow of booster set at the calculated pressure point.
For the installation of the pressure relief valve refer
to the manuals provided with the valve and local
laws.
6.5. Electrical connection
OFF
Electrical connection must be carried out
only by a qualified electrician in accordance
with local regulations.
Follow all safety standards.
The unit must be properly earthed (grounded).
Connect the earthing (grounding) conductor to the
terminal with the marking.
Compare the frequency and mains voltage with
the plate data and connect the in accordance with
the diagrams.