2 Safety
11 of 68
Vitaprime
Table 4:
Temperature limits
Temperature class to EN 13463-1
Maximum permissible fluid
temperature
T1
Pump temperature limit
T2
Pump temperature limit
T3
100 °C
T4
90 °C
If the pump is to be operated at a higher temperature, if there is no data sheet or if
the pump is part of a pool of pumps, contact KSB for the maximum permissible
operating temperature.
Motor supplied by the
operator
If a pump is supplied without motor (as part of a pool of pumps), the motor specified
in the pump data sheet must meet the following conditions:
▪
The permissible temperature limits at the motor flange and motor shaft must be
higher than the temperatures generated by the pump.
▪
Contact the manufacturer for the actual pump temperatures.
2.9.3 Monitoring equipment
The pump (set) must only be operated within the limits specified in the data sheet
and on the name plate.
If the system operator cannot warrant compliance with these operating limits,
appropriate monitoring devices must be used.
Check whether monitoring equipment is required to ensure that the pump set
functions properly.
Contact KSB for further information about monitoring equipment.
2.9.4 Operating limits
The minimum flows indicated in (
ð
Section 6.2.5.1, Page 35) refer to water and
water-like fluids handled. Longer operating periods with these fluids and at the flow
rates indicated will not cause an additional increase in the temperatures at the pump
surface. However, if the physical properties of the fluids handled are different from
water, it is essential to check whether an additional heat build-up may occur and if
the minimum flow rate must therefore be increased. The calculation formula in
(
ð
Section 6.2.5.1, Page 35) can be used to check whether additional heat build-up
may lead to a dangerous temperature increase at the pump surface.
