Other Functions - Wilo Yonos GIGA-N 80 Installation And Operating Instructions Manual

4.3.4 Disabling or enabling a pump
4.4

Other functions

4.4.1 Pump kick
Installation and operating instructions Wilo-Yonos GIGA-N
Product description
NOTICE
In the absence of a sensor signal, the (former) slave will run at maximum
speed.
To prevent this, the (former) master differential pressure sensor's signal can be
looped through. In normal double pump operation, the presence of sensor signals on
the slave has no effect.
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Mains off/mains on
During a communication interruption on the (former) slave, if emergency operation is
discontinued due to "mains off, mains on", the (former) slave will start up with the
latest emergency operation settings received from the master (for example, constant
speed with preset speed or "off").
Master pump behaviour
Emergency operation at the master pump discontinued:
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Factory settings restored
During a communication interruption on the (former) master, if the factory settings
are restored, it will start up with the factory settings of a single pump. It will then run
in Δp-c mode at about half the maximum delivery head.
ƒ
Mains off/mains on
During a communication interruption on the (former) master, if emergency operation
is discontinued via mains off/mains on, the (former) master will start up with the
most recent settings it has received from the twin-head pump configuration.
This function is only available with twin-head pump operation. A particular pump can
generally be enabled or disabled for operation in menu <5.1.4.0>. A disabled pump can-
not be operated until the disabling has been manually lifted.
The setting can be made directly at each pump or over the infrared interface. If a pump
(master or slave) is disabled, the pump is no longer ready for operation.
In this state, errors are identified, displayed and reported. If a fault occurs in the enabled
pump, the disabled pump does not start up. However, the pump kick is still performed if
it is activated. The interval to the pump kick starts when the pump is disabled.
NOTICE
If a pump head is disabled and "parallel operation" operating mode is ac-
tivated:
It cannot be guaranteed that the desired duty point will be achieved with just one
pump head.
NOTICE
If the pump is at a standstill for prolonged periods, the impeller may seize
up in the pump housing.
The pump kick reduces this risk. This is intended to ensure pump operation after a
long standstill. If the "pump kick" function is deactivated, smooth starting of the
pump can no longer be guaranteed.
A pump kick takes place after a configurable time has elapsed since a pump or pump
head stopped operating. The interval can be set manually in menu <5.8.1.2> on the
pump for a period of between 2 h and 72 h, in 1 h steps. Factory setting: 24 h.
The reason for the standstill is irrelevant. The pump kick is repeated until the pump is
switched back on via a control mechanism.
For double pump function ("Main/standby operation" mode), this also applies to the
standby pump. If the time interval before pump cycling set in menu <5.8.1.2> expires, a
pump kick takes place at the standby pump.
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