ENGLISH
16
CONTENTS
page
1.
GENERAL
16
1.1.
Pump description
16
2.
APPLICATIONS
16
3.
PUMPED FLUIDS
16
4.
TECHNICAL DATA AND RANGE OF USE
17
5.
MANAGEMENT
17
5.1.
Storage
17
5.2.
Transport
17
5.3.
Dimensions and weights
17
6.
WARNINGS
17
6.1.
Checking pump/motor shaft rotation
17
6.2.
New systems
17
6.3.
Protections
17
6.3.1
Moving parts
17
6.3.2
Noise level
18
6.3.3
Hot and cold parts
18
7.
INSTALLATION
18
8.
ELECTRICAL CONNECTION
19
9.
STARTING UP
19
10.
STARTING/STOPPING
19
11.
PRECAUTIONS
20
12.
MAINTENANCE AND CLEANING
20
12.1.
Periodic checks
20
12.2.
Shaft seal
20
12.2.1
Mechanical seal
20
12.3.
Greasing the bearings
20
12.4.
Changing the seal
20
12.4.1
Preparing disassembly
20
12.4.2
Changing the mechanical seal
20
13.
MODIFICATIONS AND SPARE PARTS
21
14.
TROUBLESHOOTING
21
1.
GENERAL
The pump may be installed in either horizontal or vertical position, as long as the motor is always above the
pump.
1.1. Pump description:
2.
APPLICATIONS
Single-stage stub shaft type centrifugal motor-driven pumps with a spiral body, dimensions in accordance with DIN 24255 - EN 733 and flanged DIN
2533 (DIN 2532 per DN 200). Designed and built with advanced characteristics, they are outstanding for their particular performances which ensure
maximum yield while guaranteeing absolute reliability and sturdy construction. They cover a wide range of applications, such as water supply,
circulation of hot and cold water in heating, air-conditioning and refrigerating systems, transfer of liquids in agriculture, market gardening and industry.
Also suitable for use in fire-fighting sets.
3.
PUMPED FLUIDS
The machine has been designed and built for pumping clean, pure and aggressive fluids, on condition that in the latter
case the compatibility of the pump construction materials is checked and that the motor used has sufficient power for
the specific gravity and the viscosity of the fluid.
Example:
-
-
/
/
Type range:
TWO-POLE MOTOR = P
FOUR-POLE MOTOR = M
With standardised motor and coupling
Nominal diameter of discharge port
Nominal impeller diameter
Actual impeller diameter
Cod for materials:
A = Cast iron
B = Cast iron with bronze impeller
Wear rings ( only when there is )
Code for shaft seal:
Motor power in kW
Poles:
4 = 4 poles
2 = 2 poles
50
NKM
250
263
G
A
W
/ BAQE
4
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