12
Settings
Connect a milliampermeter at the place of burden.
- Always start by adjusting the 0/4mA.
- Drive actuator to the position corresponding to the 0/4 mA (closed in standard),
- Hold the pinion located just under the plate with the «0% position» marking while driving the
potentiometer screw. Adjust the potentiometer so that the output current reaches a minimum
value. Turn backwards until the current value regularly increases then turn backwards again and
stop as soon as the minimum value determined here above has been reached.
The potentiometer is then positioned at the very beginning of its track.
- Then, use the TAM adjustment screw marked as «0/4mA» to adjust the current to a value as close
to the 0/4 mA as possible.
- Drive actuator to the position corresponding to the 20 mA (open in standard),
- Turn the screw marked «20mA» in order to read exactly 20 mA on the milliampermeter.
- Come back to the closed position and check that, for the 0% position, the signal current shows a
close to 0/4 mA and repeatable value.
12 MAINTENANCE
If actuators is correctly mounted and sealed, no special maintenance is required. In case of a rising
stew, the condition of the valve stew and its mut must nertheless be checked periodically to make
sure they are clean and well lubricated. Check once a year function of motor and make sure that
switch compartment is condensation free. If environment is humid, we recommend installation of an
anti-condensation heater resistance.
Actuators are lubricated for about 100,000 operations. If the grease requires to be renewed, first
remove the integrality of the old one and use one of the products listed hereafter for refilling.
The lubricants listed are suitable for standard conditions (-20 … +70°C).
For other cases, please consult our Customer Service.
SQX models
- TOTAL N31272
STX models
- CONDAT SY320
