en
Appendix
96
WILO SE 2018-12
NOTICE
Disposal in domestic waste is forbidden!
In the European Union, this symbol can appear on the product, the packaging or the
accompanying documentation. It means that the electrical and electronic products
in question must not be disposed of along with domestic waste.
To ensure proper handling, recycling and disposal of the used products in question,
please note the following points:
▪ Only hand over these products at designated, certified collecting points.
▪ Observe the locally applicable regulations!
Please consult your local municipality, the nearest waste disposal site, or the dealer who
sold the product to you for information on proper disposal. Further recycling informa-
tion at www.wilo‑recycling.com.
13
Appendix
13.1
Potentially explosive atmo-
spheres: Connection of signal
transmitters and pumps
DANGER
Risk of explosion if the switchgear is installed in potentially explosive
areas!
The switchgear does not have its own explosion protection class and must always be
installed outside of potentially explosive areas! The connection must be made by a
qualified electrician.
13.1.1
Ex-zones
The connected pumps and signal transmitters may only be used in the ex-zones 1 and
2.
Use in ex-zone 0 is prohibited!
13.1.2
Pumps
▪ Pumps comply with the ignition protection class “flameproof enclosure”.
▪ Connect pumps directly to the switchgear. The use of electronic start-up controllers is
prohibited!
▪ Connect monitoring devices outside of the flameproof enclosure via a cut-off relay
(Ex-i, intrinsically safe circuit).
13.1.3
Signal transmitter
Connect signal transmitters inside explosive atmospheres via an ex cut-off relay or a
Zener barrier (intrinsically safe circuit)!
13.1.4
Connection, thermal motor mon-
itoring
x
Fig. 76:
Overview of connections, terminal lay-
out
Connect the bimetallic strip to the terminal strip for active ex-mode (see Overview of
components [
For details on the terminal number, see the overview of
connections in the cover.
The “x” in the symbol states the respective pump.
Содержание Wilo-Control EC-L
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