Vertical multi-stage in-line pumps
MXV-B, MXV(L), MXV(L)4
OPERATING INSTRUCTIONS
Table of contents
Subject
Page
1.
Operating conditions . . . . . . . . . . . . . . . . . . . . . .11
2.
Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.
Connecting the motor . . . . . . . . . . . . . . . . . . . . . .12
5.
Pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
5.1 Suction pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
5.2 Delivery pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
6.
Electrical connection . . . . . . . . . . . . . . . . . . . . . .13
7.
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
7.1. Preliminary checks . . . . . . . . . . . . . . . . . . . . . . . .13
7.2. Filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
7.3. Starting and checking operations . . . . . . . . . . . . .14
8.
Maintenance and monitoring pump operation . . .14
9.
Dismantling . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
9.1. Replacing the mechanical seal . . . . . . . . . . . . . .15
9.2. Replacing the ball bearing . . . . . . . . . . . . . . . . . .15
9.3. First-stage bearing and intermediate bearing . . . . . .15
10. Remounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
10.1. Tightening torque . . . . . . . . . . . . . . . . . . . . . . . . .15
10.2. Axial position of the pump rotor . . . . . . . . . . . . . .16
11.
Horizontal installation . . . . . . . . . . . . . . . . . . . . . .16
11.1 Connection of support feet . . . . . . . . . . . . . . . . . .16
12. Spare parts and designation of parts . . . . . . . . . .16
13. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . .17
14.
Cross section drawing . . . . . . . . . . . . . . . . . . .92-93
15.
Stages, impellers and sleeves composition . . . .94÷98
SAFETY
Read these instructions carefully before installing or
using the device.
The assembler and final user must carefully comply with
all applicable standards and laws, including local regula-
tions. The manufacturer declines any liability in the event
of damage due to improper use or use under conditions
other than those indicated on the serial plate and in these
instructions. The device has been built in conformity with
the current European Community laws.
1. Operating conditions
Standard construction
- For clean liquids: non-explosive and non-flammable,
non-hazardous for health or the environment, non-
aggressive for pump materials, not containing abra-
sives, solid or fibrous particles.
- With seal rings in EPDM the pump is not suitable for use
with oil.
- Maximum final pressure in the pump casing: 25 bar for
MXV(L) and MXV(L)4, 16 bar for MXV-B.
- Liquid temperature: -15˚C to +110˚C for MXV(L) and
MXV(L)4, -15 °C to +90 °C for MXV-B.
- Installation in well-ventilated locations protected against
the weather, with maximum environment temperature of
40˚C.
Rated motor power
MXV(B)(L)
(2900 1/min) up to kW: 0,75 2,2
4
7,5 22
MXV(L)4
(1450 1/min)
up to kW: 1,1
3
Sound pressure
dB (A) max:
65 65 67 68 82
Starts/hour
max:
35 30 20 15 15
The electrical data marked on the label refers to the nomi-
nal power of the motor.
When a non-standard motor is installed, refer to the rated
operating conditions and noise-level values in the instruc-
tions for the motor.
2. Transportation
The safe movement and lifting of the equipment is
the responsibility of the user and must be carried out
using proper equipment and by trained personnel.
Raise and transport the pump and pump-motor unit (with-
out packaging) as indicated in
fig. 1
. Raise the pump-mo-
tor unit slowly (
fig.1c
), making sure it does not move from
side to side in an uncontrolled way, to avoid the risk of
imbalance and tipping up. For horizontal raising, brace
the pump in a sling close to the centre of gravity.
3. Installation
The
MXV-B, MXV
standard version pumps must be in-
stalled with the rotor axis in the vertical position and with
the base under the pump.
The
MXV 50-16, 65-32
and
80-48
They can also be in-
stalled in the horizontal position, using the appropriate sup-
port feet, which are supplied on request (see
section 11.
).
Install the pump as close as possible to the suction
source (with consideration given to the NPSH value).
Provide space around the pump for motor ventila-
tion, to allow for checking of shaft rotation, for filling
and draining the pump and to allow for collection of
the liquid to be removed
(especially for draining liquids
Fig.1a Raising pump without the motor
b Raising motor without the pump
c Raising pump with motor
a
b
c
c
Max 270 kg
4.93.214
11
Made in Italy
MONTORSO
MXV 50-1605
IE2-87
0705158995
H max/min 31/20 m
n 2900/min
XYXYRRY
IEC 60034-1
5,5kW (7,5Hp)
VICENZA
Made in Italy
MONTORSO
Q min/max 15/30 m
3
/h
0705158995
IP 54
n 2900/min
400∆/690Y V3~50Hz
%
100
75
50
cos
ϕ
0,84
0,78
0,67
η
87,5
88,1
87,4
V
400
400
400
10,8 / 6,2 A
S1 l.cl. F
S1 49kg
92kg
5,5kW (7,5Hp)
VICENZA
1
11
2
3
4
4
5,6,7
8,9,10
12
13
19
20
8
9,13
14
15,16,17,18
1 Type 1
2 Delivery
3 Head
4 Rated power
5 Supply voltage
6 Fréquence
7 Nom. motor current
8 Rotation speed rpm
9 Operation Duty
10 Insul. class
11 Certifications
12 Serial number
13 Weight
14 Notes
15 Voltage
16 % Load
17 Power factor
18 Efficiency
19 Protection
20 Efficiency Class
Example plate motor only for MXV-B
Example plate pump
