DAB FEKAFOS 550 Double Instructions For Installation Manual - Page 18

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9. 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).

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.

When the liquid in the tank reaches the level corresponding to the closure of the float contact that commands

the electropump, the pump starts and gradually empties the container. The electropump stops when the

liquid reaches the minimum level corresponding to the opening of the float contact. 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. There may be a float

placed higher than the others in the pumping station, its function is to indicated the presence of an

abnormally high level of the liquid in the tank.

After starting up the plant, it is advisable to inspect and clean it, especially the no return valve, about every

three months. This interval may be increased after the first inspections have given a favourable outcome.

Clean the pump accurately, removing any foreign bodies stuck in the intake grille and check that the float

moves freely. If necessary, remove the pump from the tank.

It is recommended to clean the system at least once a year with running water, operating the pump

repeatedly.

ENGLISH