Xylem MPAI - Manual (Page 79)

Installation, Operating and Maintenance Instruction
Model MP, MPA, MPAI
MP 100-english page 75 Revision 04
Article No 771074011 Issue 11/2011
3. Description
3.1 Models
Design MP: Horizontal shaft with bearings at both
ends, drive end at discharge side (standard), rotation
clockwise with suction branch left and discharge
branch radially upwards. Grease lubrication.
Optional:
Suction branch right or radially upwards,
discharge branch left or right, drive-end at suction side
(rotation anti-clockwise).
Design MPA: Endsuction type, discharge branch
radially upwards. Drive end at discharge side. Thrust
bearing at drive side, grease lubrication, medium
lubricated slide bearing between first and second
stage.
Optional:
Discharge branch left or right.
MPAI Design: As the MPA design, but also with an
inducer.
The pumps are designed as modular systems and
can, therefore, be delivered in many variants (e.g.
different materials, shaft sealings, different kinds of
lubrication, cooling / heating, a.s.o.).
The permitted application conditions and design
details of the delivered pump are shown in the
attached data sheet and / or order confirmation.
3.2 Shaft Sealing
Basically there are two kinds of shaft sealing: the
packing and the mechanical seal, whereas, there
again are many variants of both kinds. At the data
sheet and / or the order confirmation the shaft sealing
type of your pump is shown.
Instructions for packing a gland can be found in
Section 7.3 and instructions for installation and
operation of mechanical seals in Section 8
"Disassembly of the Pump and Repair".
Further details about packing and mech. seals,
as well as the therewith connected accidental
dangers, you can find in chapter 6.6 and in
chapters 7.2 and 7.3.
In areas endangered to explosion the use of
pumps with packing is forbidden!
3.3 Bearings
Design MP: Bearings at both ends; thrust bearing at
discharge side, ball bearing at suction side.
Lubrication: Grease lubrication (standard design) with
relubricating mechanism (lubricating nipple).
Design MPA, MPAI: Thrust bearing at discharge side,
medium lubricated slide bearing between first and
second stage at suction side.
Lubrication: Grease lubrication (standard design) with
relubricating mechanism (lubricating nipple).
Bearing types
Pump size
Grease lubrication
Bearing type
Suction
side
(only MP)
Discharge side
(MP, MPA, MPAI)
MP/MPA/MPAI 40.2 6306-C3 3306-C3
MP/MPA/MPAI 40.3 6306-C3 3306-C3
MP/MPA/MPAI 65.1 6307-C3 3307-C3
MP/MPA/MPAI 65.2 6307-C3 3307-C3
MP/MPA/MPAI 100.1 6308-C3
2x 7308
(X- arrangement )
MP/MPA/MPAI 100.2 6308-C3
2x 7308
(X- arrangement )
MP/MPA/MPAI 125.1 6310-C3
2x 7310
(X- arrangement )
MP/MPA/MPAI 125.2 6310-C3
2x 7310
(X- arrangement )
3.4 Approximate Value for Sound
Pressure Level
Nominal
power
P
N
in kW
Sound pressure level L
pA
in dB(A)
Pump alone Pump + Motor
2950
min
-1
1450
min
-1
975
min -1
2950
min
-1
1450
min
-1
975
min -1
1,5 66,7 65,8 65,3 68,2 66,0 65,5
2,2 68 67 66,5 69,2 67,2 66,7
3 69 68,1 67,6 71,5 68,3 68,5
4 69,9 69 68,5 72,1 69,2 69,2
5,5 71 70 69,5 73,1 70,4 70,1
7,5 71,9 71 70,5 73,7 71,3 71,8
11 73,3 72,3 71,8 75,0 73,2 72,8
15 74,2 73,3 72,8 75,6 74,0 74,0
18,5 74,9 74 73,5 76,1 74,6 76,3
22 75,5 74,5 74 77,1 75,1 76,5
30 76,5 75,6 75,1 77,8 76,1 75,7
37 77,1 76,2 75,7 78,3 76,8 76,4
45 77,9 76,9 76,4 79,4 77,4 76,8
55 78,5 77,5 77 80,1 78,0 77,3
75 79,4 78,5 78 81,4 78,9 78,4
90 80,1 79,1 78,6 81,8 79,4 79,0
110 80,8 79,8 83,4 80,2
132 81,3 80,4 83,7 80,8
160 81,9 81 84,1 81,3
200 82,7 84,6
250 83,4 86,2
315 84,1 86,6
355 84,6 86,9
400 84,9 87,1
450 85,4 87,4
500 85,6 88,3
Sound pressure level L
pA
measured in 1 m distance
from pump surface acc. to DIN 45635, part 1 and 24.
Room and foundation influences are not considered.
The tolerance for these values is ±3 dB(A).
Addition with 60 Hz-operation:
Pump alone: −
Pump with motor: +4 dB(A)