4
3.2 Transport
The booster must be transported on a pallet and
film wrapped to protect it against moisture and
dust. When the product is delivered, check for any
damage in transit. If any defect is found, inform
your Wilo agent within 72 hours.
•
The equipment must be transported by
means of authorised load devices
•
Transport straps must be placed around the
steel base frame
•
The manifolds will not withstand loads and
should not be used to secure loads in transit
4 Description and Operation
4.1 Description of Control Device
The automation of the system is ensured by the
Electronic Control. Electronic Control contains an
electronic regulation system using pressure and
flow sensors and a frequency inverter. 3 pump
sets also use a Speedcentre control panel in
conjunction with the inverters.
4.2 Operation Modes
4.2.1 Automatic Mode (1 & 2 Pump Only)
You can access this mode by pressing the
Operating Mode Auto button (Fig 2) on the
drive - see NOTE below. In automatic mode the
Electronic Control maintains a constant pressure
in the system by varying the speed of the pumps
to meet the demand. The pressure will be constant
according to the pre-determined pressure set
point. The Electronic Control starts the pump
when the installation pressure (NET P) is lower
than the set point pressure (P SET) minus the
pressure gap set (START DELTA P). The Electronic
Control stops after a time period set (TIME BEFORE
STOP) when the installation pressure (NET P) has
reached the set point pressure (P SET) and when
the flow is zero.
NOTE - AUTO Button only needs to be pressed
on pump one. If a second drive is present then
they will communicate between the two drives.
The master pump will have a solid green light
and the slave pump will have a flashing green
light
4.2.2 Manual Mode (1 & 2 Pump Only)
You can access this mode by holding down the
Manual Operating button (Fig 2) on the drive.
The pump starts at maximum frequency. When
released the pump slows down to a complete stop.
4.2.3 Automatic Mode (3 Pump Only)
All controls and settings on a 3 pump set are
done via the Speedcentre controller (Fig 3) and
are communicated to the drives. Settings can
be entered into the Speedcentre from the main
screen by pressing the menu button (Fig 3). To
start automatic mode press the Auto button
this will do a search for the pumps then initiate
automatic mode. The Speedcentre starts the
pump when the installation pressure is lower than
the set point pressure minus the pressure gap set.
The Speedcentre stops after a time period set
when the installation pressure has reached the set
point pressure and when the flow is zero.
DANGER! If power is lost during automatic mode
and pressure in the system drops, on return of
the power the pumps will run to meet system
pressure. To avoid hammer effect in the system
Wilo recommend you install a Wilo Cavsa Valve
Product Code: 2817747
4.2.4 Manual Mode (3 Pump Only)
You can access this mode by pressing the OK
button (Fig.2) on the Speedcentre this will do
a search for the pumps then you will be able to
select each pump manually. Select a pump by
pressing ENTER this will run thepump at full speed
until ENTER is pressed again to stop the pumps.
NOTE – Only one pump at a time can be run in
manual mode
4.3 Operating Features
4.3.1 Fault Contacts
Terminals for individual pump volt free contacts
found in the “mains box” (Fig.1). Normally open
and normally closed contact per pump can be
used for an external fault signal and are rated at
230V 1A. The contacts change state if any alarm
is activated.
NOTE
– Speed centre also has one set of N/O and
N/C volt free contacts 230V 1A(3 pump set only
)
4.3.2 Low Water Protection
Terminals for the low water cut out switch can
be found in the “mains box” (Fig.1). An 18v DC
input protects the booster against lack of water
via either a pressure switch or a float switch (not
supplied) and will activate within 3 seconds of the
switch operating. This can be turned off from the
within the drive menu.
WARNING! Low water protection terminals
linked out as factory standard. Do not apply
external voltage to the terminals.
