ENGLISH
32
7. ELECTRICAL CONNECTIONS
Before connecting the system to the mains, ensure that the mains voltage is the same as the value indicated
on the pump data plate.
It is recommended to apply the pump data plate (supplied in the package in addition to the one already
applied on the pump by the manufacturer) on the tank, in a clearly visible position, or on the control box.
The connection must be made as follows:
Pump:
Pass the pump cable through the cable gland supplied in the kit.
Assemble the cable gland on the tank, next to the symbol
, as shown in figure 10. Then tighten
the ring nut of the cable gland on the inside of the tank
.
8. FIRST START-UP
Before starting up the electropump check that in the tank system there is no residue or other
material that could harm the correct operation of the system.
In this phase you can leave the interception valve in the inlet pipe closed and fill the lifting station with clean
water. Open the interception valve in the delivery pipe and check that the pipes are tightened and perfectly
sealed and that the electropump is working correctly. Check also that the electropump is primed. Open the
interception valve in the inlet pipe and check that the station is working correctly.
The flow of liquid coming from the various utilities must not prevent the correct operation of the
floats present in the container.
In the case of a three-phase electropump, check that the impeller is turning in the correct direction. Check
also the electropump manual. Check that the levels of float intervention are correct, and if necessary adjust
them to suit the actual needs of the system. When there are two electropumps, the floats must be adjusted
so that the second pump starts after the first and only if the first is not able to send to the sewer duct as
much liquid as arrives from the various utilities. Check that the electropump cannot become unprimed during
operation. Check that the number of starts per hour is compatible with the characteristics of the system
components. Check that the system is working correctly and put it into service. Close the cover or covers of
the station, screwing them into place. If necessary, fix the cover in its seat in such a way as to prevent
unauthorised opening of the cover (see chapter 5.7).
8.1 Operating flow rate
It must be guaranteed that the speed of the liquid in the delivery pipe is at least 0.7 m/s and lower than 2.3
m/s.
Fig. 10
