Xylem LSNIH - Manual (Page 9)

Installation, Operating and Maintenance Instruction Model LSN
LSN 100-english page 7 Revision 01
Article No 771076024 Issue 01/2010
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
paccking 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.
An instruction for the packing of a stuffing box resp.
for the mounting and operation of mech. seals can be
found in the appendix of the particular "Mounting
Instructions of the Shaft Sealing".
Further details about packings 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 packings is forbidden!
3.3 Bearings
The pump shaft is guided by antifriction bearings. In
the data sheet and / or order confirmation you can
see, if your pump is designed for oil lubrication
(standard design) or grease lubrication (special
design).
In areas endangered to explosion the use of
pumps with grease lubricated bearings is
forbidden!
3.3.1 Used bearings
The size of the bearing bracket of your pump is shown
in the data sheet and / or order confirmation.
Bearing bracket
Bearing type
pump side drive side
24 6307 - C3 3307A - C3
32 6309 - C3 3309A - C3
42 6311 - C3 3311A - C3
48 6313 - C3 3313A - C3
3.3.2 Oil Sump Cooling
On temperatures of the pumped liquid over 160°C an
oil sump cooling is required.
For connection refer to list "Connections" in the annex.
For cooling use pure, non-aggressive water with a
maximum incomming temperature of 30°C.
Cooling water should be hand-warm at discharge.
The pressure in the cooling system must not
exceed max. 6 bar.
Provide control devices for temperature and
pressure monitoring.
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
0,55 50,5 49,5 49,0 58,0 52,0 51,5
0,75 52,0 51,0 50,5 59,0 54,0 53,0
1,1 54,0 53,0 52,5 60,0 55,5 54,5
1,5 55,5 55,0 54,5 63,5 57,0 56,0
2,2 58,0 57,0 56,5 64,5 59,0 58,5
3,0 59,5 58,5 58,0 68,5 61,0 62,0
4,0 61,0 60,0 59,5 69,0 63,0 63,0
5,5 63,0 62,0 61,5 70,0 65,0 65,0
7,5 64,5 63,5 63,0 70,5 67,0 67,0
11,0 66,5 65,5 65,0 72,0 69,0 68,5
15,0 68,0 67,0 66,5 72,5 70,0 70,5
18,5 69,0 68,5 68,0 73,0 70,5 74,0
22,0 70,5 69,5 69,0 74,5 71,0 74,0
30,0 72,0 71,0 70,5 75,0 72,0 73,0
37,0 73,0 72,0 71,5 76,0 73,5 73,5
45,0 74,0 73,0 72,5 77,0 74,5 73,5
55,0 75,5 74,5 74,0 78,0 75,5 75,0
75,0 77,0 76,0 75,5 80,0 76,5 76,0
90,0 78,0 77,0 -- 80,5 77,5 --
110,0 79,0 78,0 -- 82,5 78,5 --
132,0 80,0 79,0 -- 83,0 79,5 --
160,0 81,0 80,0 -- 83,5 80,5 --
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)
3.5 Permitted Nozzle Loads and Torques
at the Pump Nozzles ...
... following the Europump-Recommendation for
pump acc. to ISO 5199.
The data for forces and torques are only valid for static
piping loads.
The values given in the chart are valid for pump units
with standard-LSN-base frames (ungrouted).
All values for forces and torques refer to standard
materials EN-GJS400-18LT and 1.4408.
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