Manual Speroni SX (page 8 of 20) (English, French, Italian, Spanish)

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4”- 6” ELECTROSUBMERSIBLE PUMPS

Standard use

Well

arthesian depth DN100 mm (4”)

DN 150 mm ( 6”)

Liquid

clean water or lightly charged,

max. temperature 25ºc; sand

content 40 g/m

Service

continuos or intermittent max.20

starts/hour well distributed. Max.

voltage drop 3% on nominal data

voltage

Motor

4”- 6” imerged, asychronous

bipolar,water cooled (flow 0,1

m/s), insulation B cl.(4”) and

F(6”),degree of protection IP

58.THREEPHASE with direct

star t (0,25/5,5kW)o star t-

delta or statoric start(>5,5kW);

SINGLEPHASE with capacitor

tart (0,25/2,2kW). To be coupled

according to NEMA standars.

FIRST CONTROL

• The well must be right,without sand or

sediment,if not provide to bleed it.

• Before plunging the group check the sense

of rotation of the motor: it must anticlockwise

looking from the shaft exit side. For water

cooled motors also control the topping-up the

liquid according to the motor manufacturer’s

instructions.

MOTOR COUPLING

• Check the free rotation of the motor-pump

and the cable condition, if not tted, block the

connector into its seat with a proper key (5

kgm). Clean the surfaces to be coupled.

• Keep out the suction screen and cable pro-

tection, put the suction head of the pump in

correspondance of the motor prisoners and

cable cross;couple the grooved joint of the

pump to the motor shaft then x it with nuts

as standard.

• Make sure that a clearance exists on pump

joint by using a screw-driver appealing to the

motor,reassemble the suction screen and

cable protection and insert the motor cable in

its own seat.

CABLE

CONNECTION

• Joint the motor cable to the line cable (10) with

high insulating systems(thermotightening or

dielectric resin).

• Choose the standart feeder(2) according

to: voltage-power-lenght-type of service

(insulation>1kW)

• When nishing the cable connection,before

pluging the electropump,verify the followings

by using suitable instruments:the CONTI-

NUITY among phases,between the earth

conductor and motor mass,the INSULATION

between phases and earth.

INSTALLATION

• Handle thee pump (12) carefully;don’t hurt it

and don’t make it fall.Apply safety and accident

prevention rules in force in the building yards

when screwing pipings(9) and getting down

the group. Be careful to void overturnigs that

could hurt persons and plants.

• Tighten the threads of the discharge pipings;

for safety purposes it is better to execute some

spot-weldings at the coupling level. With plastic

pipings use proper connections.

• Anchor the group with resistant,antioxidant

cables (8), suitable to bear the weight of the

machine with discharge pipings full of water.

• When getting down the pump,link the electrc

cables to the discharghe piping, x them with

plastic hose clamps(each 3mt),be careful: don’t

damege them and NEVER use them to uphold

the goup.

• If the diameter of the well is quite bigger than

the electropump, it is better to install another

jacket,external to the motor; this is to grant that

the cooling water speed is ≥0,1 m/s.

• Place the electropump keeping it away from

the bottom of the well (x); this is ti avoid a bad

cooling due to sediments; the dinamic level(A)

of the well must not inuence its work. Grant

electrical protections and automatic level con-

trols (3) to the installation.

• Always install, at least, one non-return valve (6)

at the surface to protect the pump against wa-

ter hammers due to the plant before the valve.

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Speroni SX Manual

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