Grundfos Multilift MOG Manual Del Usuario página 23

4. Prepare the connection for diaphragm pump (optional).
Use cup drill, ∅43, for DN 50 connection socket. To avoid
sharp cutting edges, the hole must be deburred.
DN 50 - ∅43
DN 100 - ∅100
DN 150 - ∅150
Fig. 23 Cutting or drilling of optional connection holes
5. Connect the inlet pipe to the tank.
Install an isolating valve between inlet pipe and lifting station
to avoid inflow during maintenance and service. We
recommend an easy-to-handle PVC isolating valve.
Fig. 24 Installation of isolating valve
Make sure that weight from inlet, outlet and vent
Caution
pipes does not rest on the tank. Long pipe sections,
valves, etc. must be supported.
Warning
Never step on the lifting station.
6. Connect the outlet pipe.
Install a flexible connection between the pre-assembled outlet
pipework and the outlet pipe. A flexible connection can be
ensured if a distance of approx. 1 cm is left between the pipe
ends of the connecting piece and the outlet pipe.
7. Connect the vent pipe.
The DN 70 vent port on top of the tank is open. Connect the
vent pipe to the vent port via a flexible connecting piece. The
vent pipe must be led out above the roof into the open air in
accordance with local regulations. Check the use of vent
valves (accessory) according to local regulations if venting
above the roof is impossible. A flexible connection can be
ensured if a distance of approx. 3 cm is left between the vent
pipe end and the vent port.
8. Connect the diaphragm pump (optional).
Fit the diaphragm pump on the outlet side. To facilitate
servicing of the diaphragm pump, we recommend fitting a
1 1/2" isolating valve to the tank port.
9. Fix the tank to the floor.
Fig. 25 Fixing point for fixation of tank to the floor
8. Installation of LC 221 controller
Warning
Before making any connections in LC 221 or working
on pump, pit, etc., make sure that the power supply
has been switched off and that it cannot be
accidentally switched on.
The installation must be carried out by authorised personnel in
accordance with local regulations.
8.1 Location
Warning
Do not install the LC 221 controller in explosion
hazard areas.
LC 221 can be installed at ambient temperatures ranging from 0
°C to +40 °C.
Enclosure class: IP56.
Install the controller as close as possible to the lifting station.
When installed outdoors, LC 221 must be placed in a protective
shed or enclosure. LC 221 must not be exposed to direct sunlight.
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