Installation and operating instructions Wilo-DrainLift S 35
INSTALLATION English
3. Deburr and smooth the cut surface.
4. Insert the inlet seal into the hole
5. Moisten the inner surface of the inlet seal with
lubricant
6. Push the pipe clamp onto the inlet seal.
7. Push the inlet pipe into the inlet seal. The
inlet pipe must be pushed into the reservoir by
10...20 mm.
8. Connect the inlet seal and pipe firmly to the pipe
clamp.
Max. tightening torque: 5 Nm
.
Connecting the ventilation line
Comply with the following points when connect-
ing the ventilation pipe:
• Connection of a ventilation pipe is a specified
requirement and essential for correct function of
the lifting unit.
• The ventilation pipe must be routed up to higher
than roof level.
• The ventilation pipe must be self-supporting.
• The ventilation pipe must be connected so it is
free from vibration.
• The connection as well as all unions must be
absolutely leak-tight.
• A
max. tightening torque of 5 Nm
is permitted
when using pipe clamps.
The connecting port DN 70 is made open at the
factory and attached with a Konfix connector to
the reservoir. For a connection to the ventilation
line, a Konfix connector is to be opened by tearing
the flap. The ventilation pipe then only has to be
put on.
Connecting DN 40 inlets
As a general rule, it is recommended for all inlets
to be routed to the lifting unit centrally within an
inlet pipe. However, because this is not always
possible, the Wilo-DrainLift S has two additional
DN 40 connections:
• 1x next to the ventilation connection
• 1x on the front end
To guarantee correct inlet to and operation of the
lifting unit, only the DN 40 connection next to the
ventilation connection should be used.
The DN 40 connection on the longitudinal side is
chiefly intended for use as a fixed connection of a
diaphragm hand pump.
Note the following points when using DN 40
connections:
• The inlet is only allowed to use the existing con-
necting pieces.
• The inlet must be routed so it is self-draining.
Furthermore, an inlet surge must be prevented, as
must any air intake.
An inlet surge and/or air intake can cause mal-
functions of the lifting unit!
• The min. connection height is 180 mm.
NOTE
When using the DN 40 connection on the lon-
gitudinal side, it is always possible that drainage
problems will arise for physical reasons. The
inlet must be installed with a loop. The loop
must have an inlet height of 180 mm!
Fig. 6: Installation example of DN 40 inlet on the longitudinal side
• The connection as well as all unions must be
absolutely leak-tight.
• Pipe clamps are allowed to be tightened to a
max.
tightening torque of 5 Nm
.
Fig. 7: Installation of DN 40 inlet next the ventilation pipe
1 Inlet connecting piece
4 Hose section
2 Hole saw for DN 40
5 Pipe clamp
3 Inlet pipe
1. Open the connecting port with a suitable hole
saw. If no hole saw is available, the connecting
piece can also be opened using a hand saw. To do
this, saw off the cover above the lip.
2. Deburr and smooth the opening.
3. Push the supplied hose section over the connect-
ing port and secure it with a pipe clamp.
Max.
tightening torque: 5 Nm
4. Push another pipe clamp over the hose section,
insert the inlet into the hose section and connect
both parts firmly with the pipe clamp.
Max. tight-
ening torque: 5 Nm
5.3.3. Installation of the diaphragm hand pump for
manual draining of the collection reservoir
If the lifting unit fails, it can collect and hold the
sewage inflow for a period of time depending on
the inlet. To avoid major damage and/or bursting
of the collection reservoir or the inlets, the col-
lected sewage can be pumped manually into the
pressure pipe using a diaphragm hand pump.
For this purpose, the diaphragm hand pump can
be permanently connected to the lifting unit.
Note the following:
• The diaphragm hand pump must be installed at a
corresponding height for optimum operation.
• All connections must be absolutely leak-tight.
• For safe and reliable function, also refer to the
installation and operating instructions of the
diaphragm hand pump.
Fig. 8: Installation of the diaphragm hand pump
1 Diaphragm hand pump
2 Inlet connection DN 40 on the front longitudinal side
3 Pressure pipe
The connection to the lifting unit is made at the
DN 40 inlet on the front longitudinal side. The
connection to the pressure pipe is above the gate
valve.
NOTE
The pressure-side connection of the diaphragm
hand pump can also be made directly into the
collecting pipe via its own backflow loop!
