Side Connection; Connection Of Discharge Pipe; Pipework; Start-Up - Grundfos Sololift+ C-3 Montage- Und Betriebsanleitung

4.4 Side connection

Remove the union nut and the blanking plate.
Fit the union nut and the gasket ring on the pipe.
Insert the pipe end into the tank and tighten the
union nut. Make sure that the entire circumference of
the gasket is in the connection. Tighten the union nut
to obtain tightness.
4.4.1 Connection of cabinet shower
The top of the water trap of the cabinet
shower must be at least 150 mm above
Caution
the bottom of the Sololift+ C-3 tank.
Fit the inlet pipe from the cabinet shower to one of
the side connections.
It is advisable to install a strainer in the outlet grating
of the cabinet shower for collection of hair.
4.4.2 Connection of washing machine
Connect the discharge hose of the washing machine
to the top cover. If side connections are used, use a
vertical pipe with a larger inside diameter than the
outside diameter of the discharge hose. Push the
discharge hose into the vertical pipe to allow the
discharge hose to breathe, and thus prevent it from
acting as a siphon.
Fig. 8 Connection of washing machine

4.5 Connection of discharge pipe

The discharge pipe must be of a material suitable for
grey wastewater and have an external diameter of
23, 25, 28 or 32 mm.
The non-return valve in the tank prevents backflow
from the discharge pipe.
It is advisable to use a minimum ∅25 discharge pipe.
Fit the discharge elbow C using clip B.
Adapt the discharge pipe, if necessary, using
reducer D.
It is advisable to fit a drain plug at the bottom of the
vertical pipe section for use in case of repair of the
discharge pipe.
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4.6 Pipework

Figure 9 shows the maximum length of vertical and
horizontal discharge pipes.
It is recommended that the first part of the discharge
pipe is vertical.
All horizontal pipes must have a fall:
Discharge pipe: Minimum 1 %.
Inlet pipes: Minimum 3 %.
If the discharge pipe is more than 10 metres long, a
pipe one size bigger must be used after 10 metres,
for instance a ∅28 pipe for the first 10 metres and
then ∅32.
4 m
3 m
2 m
1 m
Fig. 9 Pipework
The discharge pipe must be taken above the
backflow level (i.e. main sewer level). The pipework
from this point must be made with pipe sizes of at
least ∅40.

5. Start-up

1. Check that the installation is correct.
2. Switch on the electricity supply.
3. Turn on the tap or shower and check that the
pump starts and stops correctly.
If the pump starts, Sololift+ C-3 is ready for use.
If the pump does not start, see section 7. Fault
finding chart.
4. Check that all pipes and connections are tight.
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