14
not exceed the permissible temperature class.
T
Containment shell
≤ Tx*
*Temperature classes T1-T4 (minus 5 °C for T3-T4 and minus 10 °C for
T1-T2 according to DIN EN ISO 80079-36)
T
Containment shell
= T
Pumping medium
+ 35 °C
A connection thread G1/4" for the installation of a temperature
monitoring device for the surface of the containment shell is available.
A PT100 resistance thermometer with spring-loaded tip can be used
reliably to monitor temperature excesses in the containment shell area
when the pump is full. However, a resistance thermometer is not
suitable as dry-running protection.
In case of uncertainty or for more information, please contact
Fristam
Pumpen.
3.1.3.6 Temperature limits of pump type FK
Depending on the constructive design (*temperature displacer), different max.
pumping media temperatures are permissible for pumps of the FK series:
Temperature class;
Temperature limit
value
Max. permissible
surface temperature [°C]
Max. permissible
pumping media
temperature [°C]
T1
450
≤ 90/150*
T2
300
≤ 90/150*
T3
200
≤ 90/150*
T4
135
≤ 90/100*
Table 5: Max. permissible pumping media temperatures in [°C] for pump type FK
3.1.3.7 Temperature limits of pump type FL
Depending on the constructive design (*temperature displacer), different max.
pumping media temperatures are permissible for pumps of the FL series:
Temperature class;
Temperature limit
value
Max. permissible
surface temperature [°C]
Max. permissible
pumping media
temperature [°C]
T1
450
≤ 90/150*
T2
300
≤ 90/150*
T3
200
≤ 90/150*
T4
135
≤ 90/100*
Table 6: Max. permissible pumping media temperatures in [°C] for pump type FL
