Page 12 / 88
N, N4 Rev. 13 - Operating Instructions
GB
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
N
(2900 1/min) up to
kW:
2,2
7,5
30
75
N4
(1450 1/min) up to
kW:
7,5
30
75
Sound pressure dB (A)
max:
70
80
85
90
Starts per hour
max:
60
40
20
10
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
i
i
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
3
/h
0705158995
IP 54
n 2900/min
400∆/690Y V3~50Hz
%
100
75
50
cos
ϕ
0,84
0,78
0,67
η
87,5
88,1
87,4
V
400
400
400
10,8 / 6,2 A
S1 l.cl. F
45kg
5,5kW (7,5Hp)
Made in Italy
Made in Italy
Montorso (VI) Italy IT 00142630243
Montorso (VI) Italy IT 00142630243
Head
Delivery
Rotation speed rpm
Pump type
Notes
Liquid temperature
Serial number
Certifications
IST N_N4 09_2018_Rev13_MXS 11_03con gall 10/09/18 10:52 Pagina 12
