KSB RPH - Page 33

▪ Maximum permissible cooling liquid test pressure: 15 bar
▪ Observe the specified cooling liquid quantity.
6.1.8 Cooling of the shaft seal
CAUTION
Vaporisation pressure of fluid handled higher than atmospheric pressure
Damage to the shaft seal/pump!
▷ Cool the shaft seal.
▷ Provide sufficient quantities of cooling liquid (see table).
NOTE
The vaporisation pressure varies depending on the fluid handled, the system
pressure and the material of the shaft seal (e.g. hot water).
Table 12: Cooling liquid quantities:
Fluid temperature
[°C]
Cooling liquid quantities
[m
3
/h]
5)
Casing cover < 250 0,3
< 400 0,6
Bearing bracket
200
6)
/250 to 315
7)
0.2
> 315
8)
Support on baseplate > 250 0.2
6.1.8.1 Cooling of the heat exchanger
For mechanical seals with product circulation observe the following for the heat
exchanger:
Table 13: Cooling liquid quantity depending on the bearing bracket
At speed n
[rpm]
Cooling liquid
[m
3
/h]
Bearing bracket
B02 B03 B05 B06 B07
1750/1450 0.35 0.5 0.6 0.8 0.8
3500/2900 1.2 1.2 1.8 - -
6.1.9 Heating
DANGER
Excessive surface temperature
Explosion hazard!
Risk of burns!
▷ Observe the permissible temperature classes. (⇨ Section 2.10.2 Page 11)
5)
The cooling liquid quantities indicated are based on Δt = max. 15 °C.
6)
For n = 3500 rpm and n = 2900 rpm in conjunction with triple bearing assembly. In all other cases from 250 °C!
7)
Water cooling or fan wheel
8)
Water cooling (and fan wheel optional)
6 Commissioning/Start-up/Shutdown
RPH
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