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DAB esybox mini3 Instructies Voor Installatie En Onderhoud pagina 63

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  • DUTCH, pagina 191
5.6.8 - ET: Max. switching time
Sets the maximum continuous working time of a device in a set. It is significant only on pump sets with interconnected devices. The time can be
set between 0 min and 9 hours; the factory setting is 2 hours. When the ET of a device has elapsed, the system starting order is reassigned so
as to give minimum priority to the device on which the time has elapsed. The aim of this strategy is to use less the device that has already worked
and to balance the working time between the various machines that make up the set. If the hydraulic load still requires the intervention of the
device, even though it has been put last in starting order, it will start to guarantee pressure boosting of the system.
The starting priority is reassigned in two conditions based on the ET time:
1. Exchange during pumping: when the pump remains on without interruption until the absolute maximum pumping time has been exceeded.
2. Exchange to standby: when the pump is on standby but 50% of the ET time has been exceeded.
If ET has been set at 0 there will be exchange to standby. Whenever a pump in the set stops, a different pump will start first next time it is restarted.
If the parameter ET (Max. switching time) is set at 0, there will be exchange at each restart, irrespective of the pump's actual
work time.
5.6.9 - Examples of configuration for multipump systems
Example 1:
A pump set consisting of 2 devices (N=2 automatically detected), 2 of which are set automatically (factory settings: IC = automatic) and a
contemporaneity index of N (factory settings: NC=number of devices).
The effect is as follows: the highest-priority device always starts first, and if the pressure achieved is too low, the second back-up device also
starts. The operation of the 2 will take place on a rotating basis so as to respect the maximum exchange time (ET) of each in order to evenly
balance the wear and tear on the devices.
Example 2:
A pump set consisting of 2 devices (N=2 automatically detected) of which 1 is set as automatic (IC = automatic on one device), 1 as reserve (IC
= reserve on the other device) a simultaneity index of 1 (NC=1).
The effect is as follows: the device not configured as a reserve will start and work by itself (even though it does not manage to bear the hydraulic
load and the pressure achieved is too low). If it has a fault, the reserve device steps in.
Example 3:
A pump set consisting of 2 devices (N=2 automatically detected) of which 1 is set as automatic (IC = automatic on one device), 1 as reserve (IC
= reserve on the other device) a simultaneity index of N (factory settings: NC=number of devices).
The effect is as follows: the device that is not configured as reserve always starts first, if the pressure detected is too low the second device,
configured as reserve, also starts. In this way we always try to preserve the use of one device in particular (the one configured as reserve), but
this may be useful in case of necessity when a greater hydraulic load occurs.
5.6.10 - AY: Anti Cycling
As described in paragraph 9, this function is for avoiding frequent switching on and off in the case of leaks in the system. The function can be enabled
in 2 different modes, normal and smart. In normal mode the electronic control blocks the motor after N identical start/stop cycles. In smart mode it acts
on the parameter RP to reduce the negative effects due to leaks. If set on "Disable", the function does not intervene.
5.6.11 - AE: Enabling the anti-block function
This function is for avoiding mechanical blocks in the case of long inactivity; it acts by periodically rotating the pump.
When the function is enabled, every 23 hours the pump performs an unblocking cycle lasting 1 min.
5.6.12 - AF: Enabling the anti-freeze function
If this function is enabled the pump is automatically rotated when the temperature reaches values close to freezing point, in order to avoid
breakages of the pump.
5.7- Setting low pressure detection on suction (typically used in boosting systemsconnected to the water mains)
Present only in models with Kiwa function.
The low pressure detecting function generates the blocking of the system after the time T1 (see 5.5.6 - T1: Low pressure delay).
When this function is active the symbol F4 is shown on the main page.
Tripping of this function causes the pump to cut out; it may be reset automatically or manually. The automatic reset requires that, to leave the
error condition F4, the pressure must return to a value 0.3 bar higher than PK for at least 2 sec. To reset the cut-out in manual mode, press and
then release the "˄" and "˅" keys simultaneously.
5.8 - RF: Fault and warning reset
Holding down the ˄ and ˅ keys together for at least 2 seconds deletes the history of faults and warnings. The number of faults present in the log
is indicated under the symbol RF (max 64). The log can be viewed from the MONITOR menu on page FF.
5.8.1 - PW: Change password
The device has a password-enabled protection system. If a password is set, the parameters of the device will be accessible and visible but it will
not be possible to change them.
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Applicable to firmware releases ≥ 4.4.x with integrated connectivity and Multiple Groups functions
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ENGLISH
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