Installing The Pump In The Tank; Inner Connecting Pipes - Grundfos DUOLIFT Series Installation And Operating Instructions Manual

3.13 Installing the pump in the tank

Pumps with float switches: before installing the
pump, make sure that you have set the length of the
float switch. See "Installing the pump in the tank" on
page 10.
1. Remove the plug from the power cable of the
pump. You may need to cut the cable.
2. Position the pump in the tank.
If the pump has a float switch, make sure it can
move freely.
Unilift CC, KP, APB: Position the pump between
the three positioning dots at the bottom of the
tank so that it stays in place during operation.
See figures 7 and 8.
SEG: The pump weight ensures that the pump
stays in place.
3. Lead the supply cable through the cable gland of
the tank.
4. Tighten the cable gland.
Fig. 7 Correct position of Unilift CC and KP
pumps
Fig. 8 Correct position of Unilift APB pumps
10

3.14 Inner connecting pipes

3.14.1 Cutting the flexible connecting piece
The inner connecting pipe is delivered with a flexible
connection piece Ø50. You need to cut it to a specific
size, which depends on the pump type. Use the
dimensions in the table below:
Delivered
Pump type
Unilift CC
Unilift KP
Unilift APB
SEG
3.14.2 Assembling the inner pipes
Use the thread tape delivered with the assembly kit
to seal the threads.
1. Assemble all the parts of the connecting pipe
outside the tank, except for the outlet connecting
piece. See pos. 1 in fig. 9.
2. Fit the connecting pipe to the pump in the tank.
3. Fit the outlet connecting piece to the discharge
port of the tank. Make sure that the pump is in
position and that the float switch, if any, can
move freely, before you tighten the outlet
connecting piece.
1
Fig. 9 Example with Unilift KP pumps
Cut to size
size
[mm]
[mm]
240
350
350
(no cut)
423
500
375