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N, N4 Rev. 13 - Operating Instructions

1.3 Authorized operators

The product is intended for use by expert operators

divided into end users and specialized technicians.

(see the symbols above).

It's forbidden, for the end user, carry out

operations which must be done only by

specialized technicians. The manufacturer

declines any liability for damage related to the

non-compliance of this warning.

1.4 Warranty

For the product warranty refer to the general terms

and conditions of sale.

The warranty covers only the replacement and

the repair of the defective parts of the goods

(recognized by the manufacturer).

The Warranty will not be considered in the following

cases:

- Whenever the use of the device does not conform

to the instructions and information described in this

manual.

- In case of changes or variations made without

authorization of the manufacturer.

- In case of technical interventions executed by a

non-authorized personnel.

- In case of failing to carry out adequate maintenance.

1.5 Technical assistance

Any further information about the documentation,

technical assistance and spare parts, shall be reque-

sted from: Calpeda S.p.A. (paragraph 1.2).

2 TECHNICAL DESCRIPTION

Horizontal end-suction centrifugal pumps PN 10 with

bearing bracket.

N, N4 pumps

(with nominal duty points and main

dimensions in accordance with EN 733 are intended for

use with standard electric motors in IM B3 construction

form (IEC 34-7, IEC 72), connected by means of a

baseplate and driven by a flexible coupling.

Pump casing with axial suction and radial delivery on top.

N..: version with pump casing and lanter bracket in cast

iron.

B-N..: version with pump casing and lanter

bracket/casing cover in bronze. (the pumps are supplied

fully painted).

2.1 Intended use

Standard construction

For clean liquids, without abrasives, which are non-

aggressive for the pump materials (contents of solids

up to 0.2%).

Liquid temperature from -10 °C to +90 °C.

Special construction

For clean liquids, without abrasives, which are non-

aggressive for the pump materials (contents of solids

up to 0.2%) with the following characteristics:

-Cooling mixtures with temperatures from 0 to -30 ° C.

- Water with temperatures from 90 ° C to 140 ° C.

- Oil with temperature up to 200 ° C and / or maximum

density of 30 cSt.

2.2 Improper use

The device is designed and built only for the purpose

described in paragraph 2.1.

Improper use of the device is forbidden, as is

use under conditions other than those

indicated in these instructions.

Improper use of the product reduces the safety and

the efficiency of the device, Calpeda shall not be

responsible for failure or accident due to improper use.

2.3 Marking

The following picture is a copy of the name-plate that
is on the external case of the pump.

3 TECHNICAL FEATURES
3.1 Technical data

Dimensions and weight (paragraph 13.1).
Nominal speed 1450/1750/2900/3450 rpm

Maximum  permissible  rotation  speed:  see  table on
page 86.
Supply voltage / Frequency:
- up to 240V 1~ 50/60 Hz
- up to 480V 3~ 50/60 Hz
Check  that  the  mains  frequency    and  voltage  corre-
spond  to  the  electrical  characteristics  shown  on  the
indicator plate.
The electric data marked on the label are referred to
the nominal power of the motor.

Rated motor power

(2900 1/min) up to

kW:

2,2

7,5

(1450 1/min) up to

kW:

7,5

Sound pressure dB (A)

max:

Starts per hour

max:

Maximum permissible working pressure up to 100 m
(10 bar), 160 m (16 bar) pump in ductile iron.
Maximum suction pressure: PN (Pa) - Hmax (Pa).

3.2 Operating conditions

Installation in well ventilated location protected from
the weather, with a maximum ambient temperature of
40 °C.

4 SAFETY
4.1 General provisions

Before using the product it is necessary to know all
the safety indications.

Carefully read all operating instructions and
the indications defined for the different steps:
from transportation to disposal.

The  specialized  technicians  must  carefully
comply with all applicable standards and laws,
including  local  regulations  of  the  country
where the pump is sold.
The  device  has  been  built  in  conformity  with
the  current  safety  laws.  The  improper  use

Example plate pump

N xxxxxx

IE2-87

0705158995

H max/min 31/20 m
ESCC2900 MEI≥0,10

η=

--,-

2900/min

XYXYRRY

IEC 60034-1

5,5kW (7,5Hp) T.liq 50 °C

Q min/max 15/30 m