4
4.2 MHIE***/SCe-DM (Three Phase Variable
Speed)
SCe-DM is a variable speed three phase booster
set which is controlled with the SCe controller via
motor mounted drives and pressure transducer.
Once the pressure is set on the controller the
speed of the pump will ramp up and down
according to the demand of the system (see panel
manual for the setting of the system pressure).
A suction manifold mounted low water cut out
switch protects the booster against dry running
ATTENTION! – Pumps are factory set and do
not need any settings changing for the set
to function. Any changes could affect the
performance or damage the booster
4.3 MHI***/SCe-EM (Single Phase Variable
Speed)
SCe-EM is a variable speed single phase booster
which is controlled with the SCe controller via
panel mounted frequency converters and pressure
transducer. Once the pressure is set on the
controller the speed of the pump will ramp up
and down according to the demand of the system
(see panel manual for the setting of the system
pressure). A suction manifold mounted low water
cut out switch protects the booster against dry
running
T260 version comes with an integrated tank,
float switch and stand by pump. Under low water
conditions, the booster is set for a maximum of 15
seconds continuous flow at full speed.
ATTENTION! – Frequency converters are factory
set and do not need any settings changing for
the set to function. Any changes could affect the
performance or damage the booster
5 Installation and operation
5.1 Foundation
The pressure-boosting system is designed for
installation on a flat concrete floor. The base
frame is mounted on height-adjustable vibration
absorbers as means of insulation against
structure-borne noise.
5.2 Hydraulic Connections
The SCe booster set is connected to the mains
water supply via a storage tank. An isolation valves
must be installed between the tank / discharge
manifold and the booster(as standard onm T260).
The customer’s pipes must be installed without
tension. Compensators with extension limiters or
flexible connection pipes are recommended for
this purpose in order to avoid stress at the pipe
connections and minimise the transmission of
system vibrations to the building installation.. All
SCe boster sets must be fitted with the supplied
8 litre diaphragm pressure vessel and the pressure
must be set to the system. Once the tank is filled
the pumps must be properly vented before use
(Fig 1).
ATTENTION! Connections must be made
according to local water authority regulations
WARNING! Failure to vent the pumps correctly
can cause damage to the pumps (Fig 1)
5.3 Hygiene
The supplied pressure-boosting system meets the
standards of current technology has been checked
at the factory to make sure it functions correctly.
Please remember that when used in drinking water
applications, the complete drinking water supply
has to be handed over to the operator in a perfect
state of hygiene. Flushing and disinfecting is
essential
DANGER! Contaminated drinking water is
a health hazard! Flushing and disinfecting
the pipes and system reduces the risk of
impairing the quality of the drinking water. For
information contact [email protected] or Ph:
01283 523 0000
5.4 Electrical Connections (Fig2-3)
Please use the correct wiring diagram provided
with the booster for connection of mains voltage.
Pay close attention to the terminals used and that
the correct voltage is applied. Failure to do so may
cause damage to pump or drives and will void the
warranty.
DANGER! The electrical connections and testing
must be carried out by a licensed electrician and
in accordance with locally applicable standard
specifications.
Summary of Contents for 29992313
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