4
EN
OPERATING AND MAINTENANCE MANUAL PART 2
THE USER SHOULD KEEP THIS DOCUMENT
1. INTRODUCTION
This instruction manual is split into two booklets: PART 1, containing
general information regarding our whole product range; and PART 2,
containing information specific to the motor-driven pump you have
purchased. The two publications are complementary to each other, so
make sure you have both.
Comply with the instructions contained in them to get the most out of
your motor-driven pump and assure its proper operation. If you need
further information, get in touch with your nearest authorized dealer.
If information in the two parts contradict each other, take PART 2 contai-
ning the product’s specific information as valid.
NO PART OF THESE ILLUSTRATIONS AND/OR TEXT MAY BE
REPRODUCED FOR ANY REASON.
The following symbols have been used in the compilation of this in-
struction booklet:
WARNING
Risk of damaging the pump or system
Risk of causing injury or damaging property
Electrical hazard
2. CONTENTS
1. INTRODUCTION
page 4
2. CONTENTS
page 4
3. DESCRIPTION AND USE OF MOTOR-DRIVEN PUMP
page 4
4. SPECIFICATIONS
page 4
5. PREPARING FOR USE
page 5
6. DIAGRAMS AND DRAWINGS
page 36
3. DESCRIPTION AND USE OF MOTOR-DRIVEN PUMP
3.1. DESCRIPTION
The motor-driven pumps are employed to handle cold and hot water
(see chap. 4) and are used in permanent installations. They are built
with materials assuring long life and consistent performance if used ac-
cording to the instructions given in Part 1 and 2 of the manual.
Their special construction means they can be disassembled to service
the motor and replace the impeller and mechanical seal without ha-
ving to disconnect the pump casing from the suction and delivery lines.
They are designed for medium and high delivery rates in conformity
with EN 733 DIN 24255 standards and other corresponding European
standards.
3.2. USE FOR WHICH PUMPS ARE DESIGNED
The motor-driven pumps can be used for the following applications:
RESIDENTIAL AND COMMERCIAL: water lifting, pressure boosting
systems, air-conditioning, cooling.
FARMING: sprinkler or flood irrigation.
INDUSTRIAL: water handling, washing plants, transfer of moderately
aggressive liquids compatible with AISI 304/316 steel for 3/3L-series
models.
Use the motor-driven pump based on its technical specifications.
3.3. USE FOR WHICH PUMPS ARE NOT DESIGNED
Series-3, 3D and MD motor-driven pumps cannot be used to handle dir-
ty water, water containing acids and corrosive liquids in general, water
with temperatures higher than those mentioned in chap. 4, saltwater,
flammable liquids and hazardous liquids in general.
The motor-driven pumps must never be made to work without li-
quid.
4. SPECIFICATIONS
4.1. SERIES-3 PUMP SPECIFICATIONS
U/M
SERIES 3
Temperature of liquid
pumped
°C
-10 +90
-10 +110 (H, HS, HW, WSW)
-10 +120 (E, ES)
Suction diameter
mm
50-65-80-100
Delivery diameter
mm
32-40-50-65-80
Maximum working
pressure
MPa
1
4.2. 3D AND MD PUMP SPECIFICATIONS
U/M
3D, MD
Temperature of liquid
pumped
°C
-5 +90
-5 +110 (H, HS, HW, WSW)
-5 +120 (E)
Suction diameter
mm
50-65-80
Delivery diameter
mm
32-40-50-65
Maximum working
pressure
MPa
1
4.3. SERIES-3, 3D AND MD MOTOR SPECIFICATIONS
TYPE
TEFC
RATINGS
See motor-driven pump rating plate
OVERLOAD
PROTECTION
SINGLE PHASE: thermal cutout w/ automatic reset
THREE PHASE: by installer
4.4. INFORMATION ON AIRBORNE NOISE
MOTOR
50 Hz
60 Hz
Power
kW
3_M
3D-MD
Shaft
height
3S-3P
3DS-3DP
Shaft
height
3_M
3D-MD
LpA
[dB] (A)*
3S-3P
3DS-3DP**
LpA
[dB] (A)*
3_M 3D-MD
LpA
[dB] (A)*
3S-3P
3DS-3DP**
LpA
[dB] (A)*
1,1
90
80
<70
<70
72
<70
1,5
90
90
<70
<70
72
70
2,2
90
90
<70
<70
72
70
3
100
100
71
<70
76
74
4
100
112
71
73
76
78
5,5
112
132
75
77
80
82
7,5
112
132
75
77
80
82
9,2
132
132
80
77
85
82
11
132
160
80
79
85
84
13
132
-
80(MD)
-
-
-
15
132
160
80
79
85
84
15
160
160
83-82
79
88-87
84
18,5
160
160
83-82
79
88-87
84
22
160
180
83-82
80
88-87
85
30
-
200
-
82
-
87
37
-
200
-
82
-
87
45
-
225
-
85
-
90
55
-
200
-
86
-
91
MOTOR
4 poles 50Hz
Power
kW
3_M
3D-MD
Shaft height
3S-3P
3DS-3DP
Shaft height
3_M-3D-MD
LpA dB(A)*
3S-3P-3DS-3DP**
LpA dB(A)*
≤ 3
71-100
71-100
<70
<70
* Sound pressure level - Mean value of measurements taken 1 m from
the pump. Tolerance ± 2.5 dB.
** Sound pressure level of pumps featuring AEG motor.
MODEL / Type
Stainless
steel
Cast iron
Description
3M-3LM
X
Close-coupled steel pump
3D, MD
X
3S-3LS
X
Close-coupled with standard
flanged motors and rigid coupling
3DS
X
3P-3LP
X
Coupled with motor with flexible
coupling and supporting base
3DP
X
3PF-3LPF
X
Free-shaft (without motor and base)
3DPF
X
