Motor-Driven Surface Pumps; Operating And Maintenance Manual - EBARA 3 - MD Serie Manual De Instrucciones

OPERATING AND MAINTENANCE MANUAL PART 2
THE USER SHOULD KEEP THIS DOCUMENT
1. INTRODUCTION
This instruction manual is split into two booklets: PART 1, con-
taining 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 comple-
mentary 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
GB
authorized dealer.
If information in the two parts contradict each other, take PART
2 containing 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
instruction 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
Description
MODEL / Type 3M-3LM-3BM Close-coupled steel pump
3S-3LS-3BS
3P-3LP-3BP
3PF 3LPF-3BPF Free-shaft (with no motor and base)
MD
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 according 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 having to disconnect the pump casing from the suction
and delivery lines. They are designed for medium and high deli-
very 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 applica-
tions:
RESIDENTIAL AND COMMERCIAL: water lifting, pressure boosting
systems, air-conditioning, cooling.
FARMING: sprinkler or fl ood irrigation.
INDUSTRIAL: water handling, washing plants, transfer of mode-
rately aggressive liquids compatible with AISI 304/316 steel for
3/3L-series models.
Use the motor-driven pump based on its technical specifi cations.
4
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page 36

MOTOR-DRIVEN SURFACE PUMPS

Close-coupled with standard fl anged
motors and rigid coupling
Coupled to motor with fl exible
coupling and supporting base
Close-coupled cast iron pump
3.3. USE FOR WHICH PUMPS ARE NOT DESIGNED
Series-3 and MD motor-driven pumps cannot be used to handle
dirty 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
liquid.
4. SPECIFICATIONS
4.1. SERIES-3 PUMP SPECIFICATIONS
U/M 3M-3LM-3BM
-10 +90
Max.
temperature of °C -10 +110
liquid pumped
(3MH,3MHS,3LM)
Suction diameter mm
Delivery diameter mm
Maximum working
MPa
pressure
4.2. MD PUMP SPECIFICATIONS
U/M
Max. temperature of
°C
liquid pumped
Suction diameter mm
Delivery diameter mm
Maximum working
MPa
pressure
4.3. SERIES-3, MD MOTOR SPECIFICATIONS
TYPE TEFC
RATINGS See motor-driven pump rating plate
OVERLOAD SINGLE PHASE: thermal cutout w/ automatic reset
PROTECTION THREE PHASE: by installer
4.4. INFORMATION ON AIRBORNE NOISE
MOTOR
3_M-MD 3S-3P 3_M-MD
Power
Shaft Shaft LpA
kW
height height [dB] (A)*
1.1 90 80 <70
1.5 90 90 <70
2.2 90 90 <70
3 100 100 71
4 100 112 71
5.5 112 132 75
7.5 112 132 75
9.2 132 132 80
11 132 160 80
13 132 – 80 (MD)
15 132 160 80
15 160 160 83-82
18.5 160 160 83-82
22 160 180 83-82
MOTOR
3_M 3S-3P
Power
Shaft Shaft
kW
height height
≤ 3 71-100 71-100
* 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.
3S-3LS-3BS- 3P-3LP-3BP
3SF 3PF-3LPF
-10 +90 -10 +90
-10 +110 -10 +110
(3S,3SHS,3LS) (3PH,3PHS,3LP)
50-65-80
32-40-50-65
1
MD
90
50-65-80
32-40-50-65
1
50 Hz 60 Hz
3S-3P** 3_M-MD 3S-3P**
LpA LpA LpA
[dB] (A)* [dB] (A)* [dB] (A)*
<70 72 <70
<70 72 70
<70 72 70
<70 76 74
73 76 78
77 80 82
77 80 82
77 85 82
79 85 84
– – –
79 85 84
79 88-87 84
79 88-87 84
80 88-87 85
4 poles 50Hz
3_M 3S-3P**
LpA dB(A)* LpA dB(A)*
<70 <70