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Motor-driven surface pumps
Serie 3D, 3M, 3LM
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 specifi c 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 specifi c 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
2. CONTENTS
3. DESCRIPTION AND USE OF MOTOR-DRIVEN PUMP
4. SPECIFICATIONS
5. PREPARING FOR USE
6. DIAGRAMS AND DRAWINGS
3. DESCRIPTION AND USE OF MOTOR-DRIVEN PUMP
3.1. DESCRIPTION
Stainless
MODEL / Type
steel
3M-3LM
X
3D, MD
3S-3LS
X
3DS
3P-3LP
X
3DP
3PF-3LPF
X
3DPF
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 fl ood 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 specifi cations.
page 36
Cast iron
Description
Close-coupled steel pump
X
Close-coupled with standard
fl anged motors and rigid coupling
X
Coupled with motor with fl exible
coupling and supporting base
X
Free-shaft (without motor and base)
X
EN
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,
fl ammable 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
Temperature of liquid
pumped
Suction diameter
Delivery diameter
Maximum working
pressure
4.2. 3D AND MD PUMP SPECIFICATIONS
Temperature of liquid
pumped
Suction diameter
Delivery diameter
page 4
Maximum working
page 4
pressure
page 4
4.3. SERIES-3, 3D AND MD MOTOR SPECIFICATIONS
page 4
page 5
TYPE
RATINGS
OVERLOAD
PROTECTION
4.4. INFORMATION ON AIRBORNE NOISE
MOTOR
3_M
Power
3D-MD
Shaft
kW
height
1,1
90
1,5
90
2,2
90
3
100
4
100
5,5
112
7,5
112
9,2
132
11
132
13
132
15
132
15
160
18,5
160
22
160
30
-
37
-
45
-
55
-
MOTOR
3_M
Power
3D-MD
kW
Shaft height
≤ 3
71-100
*
S
u o
d n
r p
s e
u s
e r
the pump. Tolerance ± 2.5 dB.
* *
S
u o
d n
r p
s e
u s
e r
Operating and
maintenance manual
U/M
SERIES 3
-10 +90
°C
-10 +110 (H, HS, HW, WSW)
-10 +120 (E, ES)
mm
50-65-80-100
mm
32-40-50-65-80
MPa
1
U/M
3D, MD
-5 +90
°C
-5 +110 (H, HS, HW, WSW)
-5 +120 (E)
mm
50-65-80
mm
32-40-50-65
MPa
TEFC
See motor-driven pump rating plate
SINGLE PHASE: thermal cutout w/ automatic reset
THREE PHASE: by installer
50 Hz
3S-3P
3_M
3S-3P
3_M 3D-MD
3DS-3DP
3D-MD
3DS-3DP**
Shaft
LpA
LpA
height
[dB] (A)*
[dB] (A)*
80
<70
<70
90
<70
<70
90
<70
<70
100
71
<70
112
71
73
132
75
77
132
75
77
132
80
77
160
80
79
-
80(MD)
-
160
80
79
160
83-82
79
160
83-82
79
180
83-82
80
200
-
82
200
-
82
225
-
85
200
-
86
4 poles 50Hz
3S-3P
3_M-3D-MD
3DS-3DP
LpA dB(A)*
Shaft height
71-100
<70
e l
e v
- l
M
e
n a
l a v
e u
f o
m
a e
u s
e r
m
e l
l e v
f o
u p
m
s p
e f
t a
i r u
g n
A
E
G
m
1
60 Hz
3S-3P
3DS-3DP**
LpA
LpA
[dB] (A)*
[dB] (A)*
72
<70
72
70
72
70
76
74
76
78
80
82
80
82
85
82
85
84
-
-
85
84
88-87
84
88-87
84
88-87
85
-
87
-
87
-
90
-
91
3S-3P-3DS-3DP**
LpA dB(A)*
<70
e
t n
t s
k a
n e
1
m
o r f
m
t o
. r o
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