4
L
L
L
L
0
0
0
0
0
0
0
0
1
1
/
/
E
E
B
B
–
–
R
R
e
e
v
v
.
.
G
G
–
–
1
1
0
0
/
/
2
2
0
0
1
1
7
7
I
I
T
T
A
A
/
/
G
G
B
B
/
/
F
F
R
R
GENERAL DESCRIPTION
1.1
Construction Features
MMD-MMD4 pumps are centrifugal horizontal pumps coupled by
means of a spindle to a three-phase totally enclosed
asynchronous motor with external ventilation for motor cooling.
Pump casing is provided with fastening feet for pumps with
motor up to size 132; for bigger motor sizes B3/B5, the pump
is without feet.
Sealing in ensured by a mechanical shaft seal.
Typical performances refer to continuous duty with clear water
(specific weight: 1,000 kg/m3) with a manometric suction head
of 2 meters if not otherwise specified.
For higher heads, please contact Ebara Pumps Europe to check for
the pump best suited to the service.
Pump nameplate reports the following data:
-
Manufacturer
- Head (meters)
-
Pump type
- Month/year of construction
-
Serial number
- Break power (in kW)
-
Delivery (litres per minute)
- Rounds per minute (min-1)
1.2
Applications
MMD-MMD4 pumps are mainly employed in the following
applications:
-
Heating and air conditioning systems.
-
Water lifting from lakes, rivers, wells, etc.
-
Irrigation system on ground surface or by sprinkling.
-
Water supply for small communities or isolated houses.
-
Pressure systems.
MMD-MMD4 pumps should always operate within the following
operating limits:
-
Max operating pressure: 10 bar.
-
Max liquid temperature: +130˚C
-
Min liquid temperature: - 10˚C
-
Max ambient temperature: +40˚C
-
Max liquid viscosity: 5˚E
-
Max n˚ of startups/hour: 20 (at regular intervals)
ATTENTION: Condensate may develop inside the motor.
CHAPTER 1
