KSB HPK, Installation & Operating Manual

Page: 12 / 72

2 Safety
12 of 72
HPK
Never operate the pump set outside the limits stated in the data sheet and on the
name plate.
Prevent impermissible modes of operation at all times.
2.10.1 Marking
Pump
The marking on the pump refers to the pump part only.
Example of such marking: II 2 G c TX
Refer to the Temperature Limits table for the temperatures permitted for the
individual pump variants.
(
ð
Section 2.10.2, Page 12)
Shaft coupling
An EC manufacturer's declaration is required for the shaft coupling; the shaft
coupling must be marked accordingly.
Motor
The motor must be considered separately.
2.10.2 Temperature limits
In normal pump operation, the highest temperatures are to be expected on the
surface of the pump casing, at the shaft seal and in the bearing areas.
The surface temperature at the pump casing corresponds to the temperature of the
fluid handled. If the pump is heated in addition, the operator of the system is
responsible for observing the specified temperature class and fluid temperature
(operating temperature).
The table below lists the temperature classes and the resulting theoretical
temperature limits of the fluid handled (a possible temperature rise in the shaft seal
area has already been taken into account).
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 EN 13463-1 Maximum permissible fluid
temperature
T1 Maximum 400 °C
2)
T2 280 °C
T3 185 °C
T4 120 °C
T5 85 °C
T6 Only after consultation
with the manufacturer
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 class T6
A special design is required to comply with the requirements of temperature class 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, 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.
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,
2)
Depending on the material variant