Starting Up The Product After Standstill; Servicing The Product; Taking The Product Out Of Operation - Grundfos DUOLIFT Series Installation And Operating Instructions Manual

6.1.3 Setting start levels with level arm
Unilift KP: Use only the high position. See fig.
Fig. 24 Level arm on Unilift KP
Start
[mm]
Unilift KP
150
250
Unilift KP
250
Unilift KP
260
350
Unilift CC 5
211
Unilift CC 7
Unilift CC 9 247
Unilift AP35B
Unilift AP50B
7. Starting up the product after
standstill
Before starting the product after a long time without
use, for example at a summer house, remove any
hard sediment from the bottom of the tank.
If you hear a particular noise when the pumps start, it
could be that the pump is blocked. Close the inlet
isolating valve and make sure to remove the
blockage before starting up the system again. You
may have to dismantle the pump. See section
11. Fault finding the product.

8. Servicing the product

24.
According to EN 12056, lifting stations in family
houses must be maintained at least once a year, in
apartment houses twice a year and in commercial
buildings four times a year.
We recommend therefore that you conclude a
maintenance contract to ensure a consistent
operational safety of the system.
Regular checks must include the following:
• Check for sediments in the bottom of the tank.
• Check for leakage.
• Check that the float switch can move freely, if
any.
• Check that the pump is in correct position.
Stop
[mm]
For pump maintenance, see the installation and
operating instructions for the pump. It is easy to
remove the pumps from the tank thanks to the
flexible connecting pipes and clamps.
50

9. Taking the product out of operation

60
89
125
1. Close the inlet isolating valves.
2. Start the pumps manually to empty most of the
tank.
3. Close the discharge isolating valve.
4. Empty the tank completely with the diaphragm
pump.
5. Switch of the power supply to the pumps or to the
controller, if any.
You can now disconnect and dismantle all the pipes,
remove the pumps, cables, etc.
WARNING
Toxic material
• Death or serious personal injury
• Wear protective gloves, close the
isolating valves and drain the tank
before starting any work in the tank.
WARNING
Toxic material
• Death or serious personal injury
• Wear protective gloves, close the
isolating valves and drain the tank
before you start any work on the tank.
CAUTION
Sharp element
• Minor or moderate personal injury
• Wear protective gloves when handling
the pump. The impeller has sharp
edges.
CAUTION
Crushing of feet
• Minor or moderate personal injury
• Wear safety shoes when moving the
product.
21