28
EB 2185 EN
Operation
6.1.1
Adjusting the tempera-
ture limit without using
a heating bath
If another temperature limit is to be adjusted
without using a heating bath, turn the black
plastic ring according to the scale (see Ta-
ble 9). To do this, proceed as follows:
1. If a sealing wire (19) exists, remove it.
2.
Adjust the new limit value (see Table 9)
at the set point adjuster (8).
Turn clockwise (
) to reduce the
temperature
Turn counterclockwise (
) to increase
the temperature
3.
Lead-seal the safety temperature limiter
(optional).
4. Make sure the minimum temperature dif-
ference is observed for the TR/STL.
Note:
Before adjusting the limit value, the
safety temperature limiter must be
mounted on the valve.
The setting is continuously adjustable. A turn
corresponds to approx. 3.2 K or 3.9 K de
-
pending on the limit range (see Table 9).
6.1.2
Adjusting the tempera-
ture limit using a
heating bath
If the temperature limit of the safety tempera-
ture limiter is to be adjusted precisely using a
heating bath or a deviation in the limit value
exists, proceed as follows:
1. Remove the sensor from the thermowell.
2.
When a Type 2430 Control Thermostat
or double adapter is used, unscrew it
from the safety temperature limiter.
3. Remove the safety temperature limiter
from the valve.
4. If a sealing wire (19) is used, remove it.
5. Turn the set point adjuster (8) counter-
clockwise (
) to adjust the maximum
possible limit value (see section 6.1).
6. Immerse the sensor of the safety tem-
perature limiter completely (for at least
five minutes) into the heating bath with
the correct temperature.
7. Check whether the safety temperature
limiter has been triggered.
Summary of Contents for 2439
Page 39: ...EB 2185 EN 39...
