24
EB 2043 EN
Operation
6.3 Correcting the limit value
dial
Due to ambient and temperature conditions,
the adjusted limit temperature might not be
the same as the temperature indicated by the
reference thermometer.
To correct, proceed as follows:
1. Undo the screw labeled "Korrektur" on
the back of the dial housing (14).
2. Turn the entire dial housing until the dial
shows the same temperature as the refer-
ence thermometer.
Turn clockwise (
) to increase the limit
and counterclockwise (
) to reduce it
(viewed from the front with the dial hous-
ing on top).
A 360° turn corresponds to a limit
change of approx. 1.5 K.
6.4 Fine adjustment of the limit
temperature
In case you want to make fine adjustments to
the safety temperature monitor or the limit
value deviates, proceed as follows:
Fine adjustment using a heating bath
1. Remove the sensor from the pipeline (see
section 9.1).
2. Adjust the safety temperature monitor
approx. 10 K below the required limit
(see section 6.1).
3. When a control thermostat is mounted
on the safety temperature monitor, adjust
the limit temperature to approx. 10 °C
above the limit temperature.
4. Immerse the sensor of the safety tem-
perature monitor completely into the
heating bath with the correct tempera-
ture.
5. Check whether the safety temperature
monitor has closed the valve (after ap-
prox. 5 min.). The travel indicator (8.3)
must be at '0'.
6.
When the valve is still open:
slowly turn the key (10) at the safety tem-
perature monitor clockwise (
) to in-
crease the limit until the valve closes.
When the valve is closed:
turn the rotary knob clockwise (
) three
more times.
7. To calibrate the limit reading to the limit
temperature, perform a correction (see
section 6.3).
8. When a control thermostat is mounted,
readjust it to the required set point.
9. Reinstall the sensor into the pipeline (see
section 5.3).
Fine adjustment using a thermometer
installed in the plant
1. Adjust the limit temperature of the safety
temperature monitor to approx. 10 K be
-
low the required limit (see section 6.1).
2. When a control thermostat is mounted
on the safety temperature monitor, adjust
the limit temperature to approx. 10 °C
above the limit temperature.
