Xylem LN - Manual (Page 51)

Installation, Operating and Maintenance Instruction Model L, LN
Page 47
3.3.2 General informations
The reuse of mech. seals that have already
been used for a longer time can lead to leaking
at the seal faces after reinstallation. Therefore
the replacement of the mech. seal with a new
one is recommended. The removed mechanical
seal can be reconditioned by the manufacturer
and serve as a replacement mech. seal.
3.3.3 Informations for the mounting
Pay attention to the utmost cleanness!
Especially the seal faces must be clean, dry and
undamaged. Don’t apply lubrication on the seal
faces of the mech. seal.
 If a lubricant is provided with the replacement
mech. seal, you should use this.
Use mineral grease or oil only if you are
completely sure that the elastomers of the
mech. seal are oil resistant. Use no silicone.
Use only lubricants with which you are certain
that no dangerous reaction can occur between
the lubricant and the pumped medium.
Have all required parts prepared so that
assembly can be completed quickly. The
lubricants are only effective for a short time.
After that, the axial mobility and thus the
automatic adjustment of the elastomers is lost.
Never push elastomers over sharp edges. If
necessary, use mounting devices.
During installation, push the mech. seals with a
bellows in such a way that the bellows is
compressed and not stretched (danger of
tearing apart!).
3.4 Bearings
The ball bearings of the pump are greased for life and
are thus maintenance-free.
3.4.1 Used bearings
The exact designation of your pump is shown in the
data sheet and / or order confirmation.
Pump size L
Bearing
bracket
Bearing type
drive side pump side
L 65-315, L 80-315
L 100-160, L 100-200
L 100-250, L 100-315
L 125-250
32L 6308 2Z/C3 6308 2Z/C3
L 80-400, L 100-400
L 125-200, L 125-270
L 125-315, L 125-400
L 150-250, L 150-315
L 150-400
42L 6310 2Z/C3 6310 2Z/C3
Pump size LN
Bearing
bracket
Bearing type
drive side pump side
LN 32-125/121 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 32-125/136 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 32-160/150 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 32-160/168 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 32-200/188 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 32-200/205 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 40-125/112 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 40-125/126 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 40-125/143 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 40-160/159 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 40-160/171 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 40-200/190 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 40-200/209 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 40-250/218 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 40-250/233 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 40-250/251 U.VN 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 50-125/119 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 50-125/130 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 50-125/139 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 50-160/158 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 50-160/174 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 50-200/197 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 50-200/209 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 50-250/224 U.VN 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 50-250/237 U.VN 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 50-250/250 U.VN 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 65-125/121 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 65-125/129 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 65-125/140 U.VN 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 65-160/161 U..N 24LN 6305 2Z/C3-WT 6305 2Z/C3-WT
LN 65-160/168 U..N 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 65-160/178 U..N 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 65-200/180 U..N 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 65-200/187 U..N 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 65-200/198 U..N 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 65-200/210 U..N 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 65-250/220 U..N 32LN 6308 2Z/C3-WT 6308 2Z/C3-WT
LN 65-250/241 U..N 32LN 6308 2Z/C3-WT 6308 2Z/C3-WT
LN 65-250/258 U..N 32LN 6308 2Z/C3-WT 6308 2Z/C3-WT
LN 80-160/152 U..N 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 80-160/163 U..N 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 80-160/173 U..N 24LN 6305 2Z/C3-WT 6306 2Z/C3-WT
LN 80-200/189 U..N 32LN 6308 2Z/C3-WT 6308 2Z/C3-WT
LN 80-200/209 U..N 32LN 6308 2Z/C3-WT 6308 2Z/C3-WT
LN 80-250/225 U..N 32LN 6308 2Z/C3-WT 6308 2Z/C3-WT
LN 80-250/238 U..N 32LN 6308 2Z/C3-WT 6308 2Z/C3-WT
LN 80-250/256 U..N 32LN 6308 2Z/C3-WT 6308 2Z/C3-WT
3.5 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 --