Manual Speroni KFM (page 4 of 24) (English, French, Italian, 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.

- Installation in correctly ventilated locations protected from the

atmospheric agents, (motor protection IP 44 ) with a maximum

room temperature of 40°C.

- Maximum voltage variation to the nominal value shown on the

name plate : ± 6%.

- Max. start-ups for hour : 40 at regular intervals.

2° Installation

The close coupled pumps series must be installed with the rotor

axis horizontal and feed downwards.

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

- Provide ample clearance around the unit for motor ventilation,

for easier inspection and maintenance.

3° Pipes

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

strain or vibration to the pump.

For suction lifts over 5 mt. ﬁt a suction pipe with an inside

diameter larger than the diameter of the pump suction

connection. 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 food valve with strainer which must

always be immersed.

A strainer should be installed on the suction side of the pump to

prevent foreign particles from entering the pump.

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 15 m 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 with local regulation.

The unit must be properly earthed (grounded).

Connect the earthing (grounding) conductor to the terminal with

the earth marking.

Compare the mains voltage with the name plate data and connect

the supply conductors to the terminals in accordance with the

appropriate diagram inside the terminal box cover.

Install a device for disconnection from the supply, having a contact

separation of a least 3 mm in all poles.

With three-phased motor provide an overload protective device

in line with the name plate curred.

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. A slight initial rotational resistance may be due to the

reduced axial clearance of the impeller of this type of pumps; the

impeller will work loose after a short period of operation.

Never run the pump dry.

Start the pump after ﬁlling it completely 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.

WARNING: the pumps have maximum power input at minimum

delivery.

These pumps must never be run against a closed valve.

6° Maintenance

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

may be expected. Remove the front cover or the drain plug , if

available, to empty the pumps.

After a long resting time, before restarting the unit, check that the

impeller is not jammed from incrustation, settling solids (deposit

formation) or other causes. If necessary clean with suitable

actions. 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.

When ordering spare parts, please refer to data stamped on

name plate and position number of each spare part required in

accordance with the cross section drawing.

OPERATING INSTRUCTIONS

KFM -KPM - PVC - AKM - AKC

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Speroni KFM Manual

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