2 Safety
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CHTRa
Table 4:
Temperature limits [°F]
Temperature class to EN 13463-1 or
ISO 80079-36
Maximum permissible temperature
of the fluid handled [°F]
T1
Temperature limit of the pump
T2
Temperature limit of the pump
T3
365
T4
248
T5
185
Temperature class T4
In the area of the rolling element bearings, based on an ambient temperature of
40 °C and assuming proper service and operation, compliance with the requirements
of temperature class T4 is warranted. If the ambient temperature exceeds 40 °C,
contact the manufacturer.
Temperature classes T5 / T6
A special design is required to comply with the requirements of temperature classes T
5 / T6 in the bearing area.
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 or if there is no data sheet, contact the pump manufacturer and ask for
the maximum permissible operating temperature.
2.10.3 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.
2.10.4 Operating limits
The minimum flows indicated in (
Section 6.6.3.1, Page 66) 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
(
Section 6.6.3.1, Page 66) can be used to check whether additional heat build-up
may lead to a dangerous temperature increase at the pump surface.
2.10.5 Repair
Special regulations apply to repair work on explosion-proof pumps. Modifications or
alterations of the pump set may affect explosion protection and are only permitted
after consultation with the manufacturer.
