Operating The Pump - Wilo Stratos Notice De Montage Et De Mise En Service

• Optimum-efficiency peak-load operation: Two corresponding single pumps
can be run in a low/high flow application where if the lead pump can not keep
up with the flow demand the lag pump will operate automatically. At partial
load, the hydraulic capacity is provided by one pump only. The second pump is
switched on at optimum efficiency, when the sum of power consumptions P
both pumps is less than the power consumptions P
are then adjusted upwards simultaneously to max. speed if necessary. In relation
to the conventional peak load operation (load controlled switch on and off) a
further energy saving is reached by this mode of operation.
• Duty/Standby mode: Each of the two pumps produces the design delivery rate.
The other pump can be used in the event of the first pump malfunctioning or
following a pump swap. Only one pump operates at a time.
• In the event that one pump experiences a failure/problem, the other will run as
a single pump in standard mode as instructed by the master.
• In the event of a break in communication: The slave pump runs at the last set
value of the master prior to the interruption.
• Pump swap: If only one pump is operational (duty/standby, peak- or low-load
operation), the pumps are swapped after every 24 hrs' of actual operating time.
• FC: The collective fault contact (FC) of the master can be connected to a central
control point. In this case, contact is only established with the master. The
reading is valid for both pumps.
As an option, the error message contacts of master and slave can be
programmed as single fault signal with the IR module. For the single fault
signals, contact must be established with each pump.

6.2 Operating the pump

The electronic module (fig. 1, pos. 1) houses the IR window (infrared window,
pos. 1.1) for communication with an IR module and the LC display (pos. 1.2)
with the tuning button (pos. 1.3) for operating the pump. The IR receiver and
sender surface must be located in such a way as to be able to communicate with
the IR module. If the connection to the IR module has been made, the green LED
lights up in the IR window to confirm the IR communication of all pumps that
were connected to the IR module at the same time. The LED on the pump with
which the IR module communicates blinks. It stops blinking 5 minutes after the
connection to the IR module has been interrupted. A red Error LED in the IR
window lights up when a fault is registered. Information on how to operate the
IR module can be obtained in its installation and operating instructions.
LC display: The LC display shows the pump's setting parameters using symbols
and numerical values. The display can be selected according to the position of
the module, i.e. horizontal or vertical, at a readable angle (face to face).
The display is constantly lit up. The table below explains the meaning of the LC
display's symbols:
Installation and operating instructions Wilo-Stratos
of one pump. Both pumps
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English
of
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