Samson 2403, Mounting And Operating Instructions, Page: 25 / 32

EB 2183 EN 25
Operation
6 Operation
See Fig. 2.
6.1 Adjusting the limit tem -
perature
1. If necessary, unscrew the Type 2430
Control Thermostat.
2. Set the target limit temperature by
turning the black adjustment knob (12,
see Fig. 2) according to the scale (see
Table 4).
Turn the adjustment knob clockwise (

)
to reduce the limit temperature.
Turn the adjustment knob counterclock-
wise (

) to increase the limit tempera-
ture.
3. Pull the wire through the lead-seal hole
(13) and lead-seal it to fix the adjusted
limit.
4. Mount the Type 2430 Control Thermostat
onto the valve (see section 5.3).
The limit temperature is continuously adjust-
able.
The limit can be changed roughly by turning
the adjuster according to the specifications
(limit change per turn). After reaching the
limit temperature, the Type 2403 Safety Tem-
perature Monitor must close the valve com-
pletely (leakage rate 0.05 % of the K
VS
coef-
ficient).
When the Type 2403 Safety Temperature
Monitor is combined with a Type 2430
Control Thermostat, make sure that there is a
minimum difference of approxi15 K
between the adjusted limit temperature of the
safety temperature monitor and the set point
temperature of the control thermostat.
Note
Table 4: Rough limit adjustment 1)
Limit range Scale intervals
Limit change per turn
(approx.)
0 1 2 3 4
60 to 75 °C 60 °C 75 °C 2.6 °C
75 to 100 °C 75 °C 100 °C 2.2 °C
1)
Precise adjustment is only possible using a thermometer (see “Fine adjustment of the limit tempera-
ture”).