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If it is not possible to see the impeller, the turn sense is checked when the pump starts working out of the well.
It gives a light pull to the left side (anticlockwise).
When the turn sense is not correct, two phases must be exchanged in the connection of the control panel and
check again the turn sense.
Each time we change any electrical connection, from the transformer to the control panel, or from the control
panel to the pump, it is necessary to check again the turn sense.
NEVER PUT THE HAND INSIDE THE PUMP TO CHECK THE TURN SENSE
!
BECAUSE IT CAN CAUSE AN IMPORTANT PERSONAL DAMAGE.
FINAL PROCESS: Finally and once we have followed all the previous instructions, we can put the pump in its
final place and start it.
The control panel must be in manual position and once we have checked that there is water in the well, we
start and stop each pump of the installation.
We must check the proper consumption (current in amperes) , the feed tension (check with the data of the
name plate of the pump) and the good working without vibrations and strange noises. After that, we change
the control panel to automatic working.
In this moment, we have to check the correct position of the level switch of start and stop and if it is necessary
we should correct the start and stop position of the levels.
Once we have checked all the electric operations we can leave the pumping station working automatically for
its usual working.
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MAINTENANCE
MAINTENANCE WORKS, DISCONNECT THE PUMP FROM THE ELECTRICAL
NETWORK
!
BE CAREFUL WHEN WE REMOVE THE PUMP TO AVOID THAT IT FALLS OR GETS
DAMAGED
The Bombas Omega submersible pumps are designed to work with loaded fluids, polluted or aggressive fluids,
which can be harmful for the health, so proceed carefully.
Once the pumps is removed, clean it properly with water from outside.
And if any piece is dismounted, clean it too (the same way).
If we check the oil of the chamber, pay attention because it could have some pressure and it could sprinkle.
Place a cloth on the screws of the chamber when releasing.
In a normal working of the submersible pumps, apart from paying attention to any anomaly of the control panel,
we must make few inspections periodically to assure the good state and working of the basic components of
the pump.
The Bombas Omega submersible pumps must be checked each 6 months. This revision can be made by
a qualified mechanic staff, who knows about pumps. It does not require any special tools except a key to
dismount the impeller of the pump (this key can be supplied by Bombas Omega). The rest are hexagonal
screws in stainless steel which can be released with standard keys.
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The most important points to be checked are the following ones:
OIL: All the pumps of Bombas Omega have an oil chamber placed between the electrical motor and the
hydraulic part of the pump which gives a proper isolation between both elements and lubricates the mechanical
seals in case of a sudden dry working of the pump.
The oil chamber is full of oil in a 80% of its capacity with an oil of low viscosity, ISO 22, refined mineral as per
CE 67/548.
The oil chamber has two threaded orifices for the inspection and for the fill/empty (orifices seen from the
outside of the pump).
Once these ones are open, being very careful and with the pump in horizontal position, remove some oil. If it
is clean it means the good working of the mechanical seals, but if we see that there is water in it, it means that
at least, the lower mechanical seal is damaged and we have to replace it.
ELECTRICAL CABLES:
The submersible pumps of Bombas Omega are supplied with a specific cable to work under loaded waters.
Although they have an important protection cover, the electrical cable can get older or get damaged by the
action of the temperature of the aggressive products of the water.
The blows, friction and cuts on it can damage the cable too.
For this reason, each 6 months we must check the surface state of the electrical cables, verifying that they do
not present any damage, cut or swollen along its length, otherwise, we must replace it.
MOTOR ISOLATION:
Every 6 months, minimum, we must check the motor isolation. We need to use a Megger of 500V or 1000V.
This one will be connected to the ends of the electric cable and it will measure the isolation between phases
and between phases and earth.
When the Megger shows an isolation higher than 100MΩ, it means that we have a perfect isolation. But when
it shows an isolation lower than 100MΩ, it can indicate that there is a small deterioration in the isolation of the
motor or that there is humidity inside the electrical motor. The lower the values measured by the Megger, the
more important problems can appear.
When the value measured is lower than 10MΩ we must dismount the motor and dry it (in oven 100º) and clean
it to varnish the winding. After all this, verify again the isolation.
Once we have made all this procedure if the motor isolation continues low, it is necessary to rewind the motor.
BEARINGS AND THEIR GREASING:
The pumps of Bombas Omega up to 12,5HP 1000 rpm, 25HP 1500 rpm and 30HP 3000 rpm have bearings
greased for life.
The pumps with bigger powers have internal greasing, so it is convenient to grease them each 2 working
years using grease based on lithium as per DIN 51102 with additives of extreme pressure (EP) compatible with
graphite and with molybdenum but not compatible with greases based on sodium or calcium.
On the other hand, when the pump is dissambled for its reparation, we must check the state of the bearings
and change their grease.
We give an orientation of some brands of grease and oil suitable for the lubrication of the bearings.
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