KSB Etachrom L, Installation & Operating Manual

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2 Safety
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Etachrom L
1212.8/19-EN
from those stated on the data sheet, or if different mechanical seals are used, the
actual safety margin required needs to be determined individually. If in doubt please
contact the manufacturer.
The temperature class specifies the maximum permissible temperature at the surface
of the pump set during operation.
For the permissible operating temperature of the pump in question refer to the data
sheet.
Table 4: Temperature limits
Temperature class to ISO 80079-36 Maximum permissible
fluid temperature
2)
T1 Temperature limit of the pump
T2 280 °C
T3 185 °C
T4 120 °C
T5 85 °C
T6 Only after consultation
with the manufacturer
In the following cases, and if ambient temperatures are higher, contact the
manufacturer.
Temperature class T5 Based on an ambient temperature of 40 °C and proper maintenance and operation,
compliance with temperature class T5 is warranted in the area of the rolling element
bearings. If the ambient temperature exceeds 40 °C, contact the manufacturer.
Temperature class T6 If temperature class T6 must be complied with, special measures may be required
with regard to bearing temperature.
Misuse, malfunctions or non-compliance with the instructions may result in
substantially higher temperatures.
If the pump is to be operated at a higher temperature, the data sheet is missing or if
the pump is part of a pool of pumps, contact KSB for the maximum permissible
operating temperature.
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 flow rates indicated in ( ð Section 6.2.3.1, Page 38) 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 6.2.3.1, Page 38) can be used to check whether additional heat build-
up may lead to a dangerous temperature increase at the pump surface.
2 Subject to further limitations for mechanical seal temperature rise