Electrical Connection; Motor Protection; Plug Connection; Connection Without Plug - Grundfos SCALA2 Installation And Operating Instructions Manual

6. Electrical connection

Carry out the electrical connection
according to local regulations.
Check that the supply voltage and
frequency correspond to the values stated
on the nameplate.
DANGER
Electric shock
Death or serious personal injury
‐
Switch off the power supply before you
start any work on the product. Make
sure that the power supply cannot be
switched on accidentally.
DANGER
Electric shock
Death or serious personal injury
‐
The pump must be earthed.
‐
The pump is supplied with a grounding
conductor and grounding-type
attachment plug. To reduce the risk of
electric shock, be certain that the pump
is connected only to a properly
grounded, grounding type receptacle
(protective earthing).
‐
If national legislation requires a
Residual Current Device (RCD), a
Ground Fault Circuit Interrupter
(GFCI), or equivalent in the electrical
installation, this must be type B
(according to UL/IEC 61800-5-1) or
better, due to the nature of the
constant DC leakage current.
If the power supply cable is damaged, it
must be replaced by the manufacturer, his
service agent or similarly qualified persons
in order to avoid hazard.
We recommend that you fit the permanent
installation with a residual-current circuit
breaker (RCCB) with a tripping current
less than 30 mA.

6.1 Motor protection

The pump incorporates current and temperature
dependent motor protection.

6.2 Plug connection

DANGER
Electric shock
Death or serious personal injury
‐
Check that the power plug delivered
with the product is in compliance with
local regulations.
‐
Make sure that the pump is connected
only to a properly grounded,
grounding-type receptacle (protective
earthing).
‐
The protective earth of the power outlet
must be connected to the protective
earth of the pump. The plug must
therefore have the same PE
connection system as the power outlet.
If not, use a suitable adapter.

6.3 Connection without plug

The electrical connection must be carried
out by an authorised electrician in
accordance with local regulations.
DANGER
Electric shock
Death or serious personal injury
‐
The pump must be connected to an
external main switch with a minimum
contact gap of 3 mm (0.12 inch) in all
poles.
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