RDL
13
4.4.6 Mechanical seal
Please refer to the mechanical seal drawing for details of the mechanical seal installed in the pump. Other seal
configurations and types may only be used in exceptional cases and after consultation with KSB. The relevant seal
version is shown in the mechanical seal drawing.
After a short period of accommodation during operation, there is no more leakage.
Mechanical seal is composed fundamentally of one stationary face and one rotating face, which polished surfaces are kept
together by spring pressure.
Sealing materials should be compatible with pumped liquid.
Condition for safety and long operation, is based on a film of the liquid between the sealing faces and the generated heat being
appropriately absorbed by liquid circulation.
Depending on the pumping condition, this circulation can be of pumped liquid or liquid of external source.
Mechanical seals are constructed in many different materials and assembly arrangement, covering almost all of chemical and
physical characteristics of liquid to be pumped.
When requested, shaft sealing by mechanical seal additional information will follow separately.
4.4.7 Noise characteristics
Sound pressure level L pA (dB)
1) 2)
Pump only Pump with motor
2900 1450 960/760 2900 1450 960/760
Rated
Power
input
P
N
(kW)
1/min 1/min 1/min 1/min 1/min 1/min
11,0 69 67,5 - 74,5 69,5 -
15,0 70,5 68,5 - 75,5 70,5 -
18,5 71,0 69 - 76 71,5 -
22,0 71,5 69,5 - 76,5 72 -
30,0 72,5 70,5 - 77,5 73 -
37,0 73,5 71,5 - 78 73,5 -
45,0 74 72 - 78,5 74,5 -
55,0 74,5 72,5 70,5 79 75 71
75,0 76 74 71,5 80 76 72,5
90,0 76,5 74,5 72 80,5 77 73,5
110 77 75 72,5 81,5 77,5 74
132 77,5 75,5 73 82 78 75
160 78 76 73,5 82,5 79 75,5
200 79 77 74,5 83 79,5 76,5
250 - 77,5 75 - 80 77,5
400 - 79 76,5 - 82 -
500 - 80 77,5 - - -
750 - 81 78,5 - - -
1000 - 82 79,5 - - -
1500 - - 81 - - -
2000 - - 83 - - -
1) Measured at a distance of 1m from the pump outline (as per DIN 45635 Part 1 and 24). Room and foundation influences
have not been included. The tolerance for these factors is 1 to 2 dB.
2) Increase for 60Hz operation
Pump without motor: ---
Pump with motor:
3500min
-1
: +3dB, 1750min
-1
: +1dB, 1160min
-1
: ---dB
To Next Page
Loading...
