ARI Armaturen RI21 EN - Manual (Page 16)

Page 2-16 Rev. 0040602000 1014
Operating and installation instructions 
Electronic position indicator RI21
6.0 Starting up
ATTENTION !
- The thrust actuator should only be operated for short periods without a hood
when carrying out essential adjustments to potentiometers, directional switches
and electrical options. During such activities the thrust actuator has hazardous
live, bare parts as well as moving and rotating parts.
- Careless or unprofessional adjustments can lead to death, serious physical
injury or substantial damage to property.
- Operating the thrust actuator without a hood is prohibited for any purpose other
than that described above.
- Electronics must be moisture-free.
Before starting up a new system or restarting a system following repair or modification
check:
- that regional safety instructions have been complied with as a matter of principle
- that the data on power supply, actuating signal and ambient temperature are consistent
with the technical data on the electronics.
- that all work has been properly completed!
ATTENTION !
- The adjustment to the RI21 can only be performed when the actuator is
mounted onto a valve.
- Observe the order of the settings: 
1. Potentiometer (refer to 6.2) 
2. Type of control signal (refer to 6.3) 
3. Zero point (refer to 6.4)

4. Slope span (refer to 6.5)
- In case of subsequent changes to a setting, the following settings must be
readjusted!
- Example: 
If the type of control signal (point 2) is changed, the zero point (point 3) and the
slope span (point 4) must be readjusted.
The hood must be installed after completing the adjustments!