EF315_r5.1(v12.22) – 03/2023 page 6
NOTES AND GENERAL ADVICES
1) Install the unit (electronic device) as far as possible from heat source and humidity.
2) Once installation has been completed, close carefully the cable glands, the terminal block
compartment and the cover, in order to prevent oxidations of the electronic boards.
3) If the unit cannot be switched on even if powered, check the fuse F1. The fuse location is shown in
the “Electrical connections” section.
4) Generally, the sensor connection cables (signal cables) must be as short as possible and kept far
from power cables.
5) Exchange power phase and neutral connection, means that the internal protection fuse (F1) is
connected to the neutral, but the device can operate properly.
6) The “earth” of the power supply (terminal 3) must be connected to the electrical system grounding.
This connection is mandatory for safety reason, because it also involves outputs P1 and P2, and it
is useful to avoid any electrical noise coming from the mains.
7) In case of P1 and P2 outputs configured PFM, never exceed the maximum allowed values; the static
outputs relays do not require any polarity. The max load on the alarm relay output is 3A resistive
@250V~; with inductive load the max current is 1A.
8) To have the unit always at top performance even in noisy environments, it is recommended to follow
these instructions:
• install ferrites on the power cable for RF lock
• ground any metallic shield of the input signal cables
• perform correct grounding of the device
9) The unit must be always powered to avoid sensor polarization delays, and subsequent control errors.
To stop the device (for example when the filtration is not working), it is recommended to use the
EXT.CONS. input connected to a voltage-free contact of the filter pump contactor.
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