Installation; Electrical Installation; Mechanical Installation; Connection In Top Cover - Grundfos Sololift+ C-3 Montage- Und Betriebsanleitung

4. Installation

Carry out the installation according to local
regulations and directives.
All Sololift+ models must be accessible
for maintenance and repair. Engineers
Note
will not be able to carry out service or
repair of the unit without easy access.

4.1 Electrical installation

The electrical installation must only be carried out by
trained personnel.
Connect Sololift+ C-3 to a voltage supply according
to the nameplate.
The installation must include an earth
leakage circuit breaker for protection
against earth fault currents. This
ensures protection when using a
Schuko plug or another alternative to a
plug with earth pin.
Connect Sololift+ C-3 to a mains switch
with a minimum contact gap of 3 mm in
all poles.
The lifting station must be protected
against water splashes in accordance
with regulations.
4.1.1 Wiring diagram
Rp
C
Ra
Fig. 4 Wiring diagram
4.1.2 Motor protection
In case of overtemperature, a thermal
overload switch cuts out the motor and
cuts it in when the motor has cooled
sufficiently.

4.2 Mechanical installation

Fit the floor fittings F to prevent uplift in case the
room is flooded. Install Sololift+ C-3 with adequate
access for maintenance.
4.2.1 Siphoning
If the connection to the sewer is below the bottom of
the lifting station, it is advisable to install a vent valve
to prevent siphonage.
If the last pipe section after a horizontal discharge
pipe is vertical, it must be two sizes bigger than the
horizontal pipe. If the horizontal pipe is ∅23, the
vertical pipe should be ∅40. If the horizontal pipe is
∅32, the vertical pipe should be ∅50. See fig. 5.
Fig. 5 Siphoning
4.2.2 Application sketch
Fig. 6 Application sketch

4.3 Connection in top cover

Cut off the stub end in the cover using a sharp knife
or a saw with fine teeth. Cut the edges at right
angles to the hole to ensure a good fastening of
sleeve A. Remove rough edges.
Fig. 7 Connection in top cover
Secure sleeve A by means of the metal clip B.
9