Cosmo CPH 4-25, Installation And Operating Instructions Manual

Page: 35 / 112

GB
32
-The electrical connection is made in a dry place, far
from any possible flooding.
-The electrical system is provvided with a differential
switch with I
∆
n
≤
30 mA and that the earth system
is efficient.
3. ELECTRICAL CONNECTIONS
Attention: always respect the safety regulations!
Electrical installation must be carried out by an
expert, authorised electrician, who takes on all re-
sponsibility.
The system must be correctly and safely earthed as
required by the regulations in force.
The line voltage may change when the electropump
is started. The line voltage may undergo variations
depending on other devices connected to it and on
the quality of the line.
The differential switch protecting the system must
be correctly sized and must be of the “Class A” type.
The automatic differential switch must be marked
with the following symbols:
The thermal magnetic circuit breaker must be cor-
rectly sized (see Electrical Characteristics).
4. MAINTENANCE
Before starting any work on the system, before
starting to look for faults it is necessary to discon-
nect the power supply to the pump (take the plug
out of the socket).