Manual Speroni CM (page 5 of 24) (English, French, Italian, Portuguese, Spanish)

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1° OPERATING CONDITIONS

- For clean liquids without abrasives, without suspended solids

non explosive, non aggressive for the pump materials, with a

maximum temperature of 60°C(CM22-CM32)

90°C (CFM-CBM-2CM-CM)

- Maximum ﬁnal pressure level admitted into the pump casing:

10 bar.

- Installation in correctly ventilated locations protected from

the atmospheric agents, with a maximum room temperature

of 40°C.

- Maximum voltage variation to the nominal value shown on the

name plate: ±6%.

2° Installation

Centrifugal motor pumps must be installed with the rotor axis

horizontal and feet downwards.

Moreover, they can also be installed in other positions provided

they are supported by rigid and stable pipes and provided that it

is possible to ﬁll and to drain the pump casing and the drain of

the condensation water that accumulates in the motor.

For safety reasons avoid any location where the motor is under

the pump.

Place the pump as close as possible to the suction source.

3° Pipes

Secure all pipes to support so that they do not carry on stress,

strain or vibration to the pump.

The inner pipe diameter depends on the capacity required.

If possible, diameter has to enable a liquid speed not higher than

1.5 m/s during suction and 3 m/s during delivery.

The pipe diameters never have to be smaller than the pump

connections.

The suction pipe must be perfectly airtight and be led upwards

in order to avoid air pockets.

For suction operation ﬁt a strainer-equipped valve, which must

always be immersed.

For suction from a storage tank ﬁt a check valve.

For positive suction head operation ﬁt a gate valve.

Follow local speciﬁcations if increasing network pressure.

Fit a gate valve into the delivery pipe to adjust delivery, head,

and absorbed power.

Install a pressure gauge.

With a geodetic head at outlet over 15m ﬁt a check valve between

the pump and the gate valve in order to protect the pump from

water hammering.

Ensure the inner sides of the pipes are clean before

connection.

4° Electrical connection

Electrical connection must be carried out by a qualiﬁed electrician

in compliance with local regulation.

The unit must be properly earthed (grounded).

Position the terminals following the instructions written on in

the plate, which is placed inside the capacitor box .

Install a device for disconnection from the supply, having a

contact separation of at least 3 mm in all poles.

With three-phased motor provide an overload protective device

in line with the name plate current.

Single phase pumps are supplied with a capacitor connected

to the terminals and with inset thermal protector for 230-240

V - 50 Hz.

5° Start-up

Check that the shaft turns by hand.

For this purpose the smaller pumps have a screwdriver notch

on the ventilation side of the shaft end.

Never run the pump dry.

Start the pump after ﬁlling it up with liquid through the relevant

priming hole.

When operating under positive suction head, ﬁll the pump by

opening the suction gate valve slowly and completely, keeping

the delivery gate valve open to release the air.

With three phase motor check that the direction of rotation is

as shown by the arrow on the pump casing; otherwise reverse

the connections of the phases.

Check that the pump works within its ﬁeld of performance,

and that the absorbed current shown on the name plate is not

exceeded.

Otherwise adjust the delivery gate valve, or the sitting of any

pressure switches.

6° Maintenance

When the pump is not used, empty it completely if freezing

may be expected.

Before restarting the pump, check that the shaft is not jammed

from incrustations or other causes and ﬁll the pump casing

completely with liquid.

CAUTION: disconnect the mains before any servicing

operation.

7° Dismantling

Close the suction and delivery gate valves and drain the pump

casing before dismantling the pump.

For dismantling and re-assembly see construction in the

cross section drawing., shown in the following pages of this

instructions handbook.

To dismantle the pump side, undo the support screws, while to

dismantle the motor side you should take out, with the help ofa

screwdriver, the fan cover (which is pressure ﬁxed), the fan and

then you should unscrew the four tie-rods.

When ordering spare parts, please refer to data stamped on

name plate and position number of each spare part required

in compliance with the cross section drawing.

OPERATING INSTRUCTIONS

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Speroni CM Manual

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