ARI Armaturen ARI-PREMIO - Manual (Page 30)

Page 30 0040501000 4511
Operating and installation instructions
Thrust actuator ARI-PREMIO
Installing the thrust actuator on a straight through valve, the travel switch S3 needs
to be set as follows:
- Move valve out of the lowest position so as to run valve-lift to up position.
- Using a screw driver, proceed to turn setting spindle for switch S3 (pos. 50.51) until the trip
cam (pos. 50.54) arriving from below trips the switch (audible click).
- Run thrust actuator briefly in extending direction and then in retracting direction once
more, checking to see whether the thrust actuator is switched off at the desired point
(nominal lift).
- If need be, correct the setting as described.
Installing the thrust actuator on a three-way valve, the travel switch S3 needs to be
set as follows:
- Run valve in both final positions and check in each final position whether the valve
switches off via the load-dependent switch.
- Carry out a check in the top final position the see whether, after switching off the thrust
actuator, the trip cam (pos. 50.54) of the travel switch S3 is situated below switch S3 and
has not tripped the latter. If the trip cam (pos. 50.54) is situated above the travel switch S3
or trips the same, the setting spindle governing the travel switch S3 (pos. 50.51) needs to
be turned until the trip cam is situated below travel switch S3 without tripping it.
- Run the thrust actuator in both final positions once more and check whether thrust
actuator switches off in both final positions via the load-dependent switches.
- If need be, correct the setting as described above.
5.5.3.3 Setting the additional travel switches (S4/S5 and S24/S25)
The two additional travel switches can be freely set in both lift directions for indicating
certain valve positions.
To do this, proceed as follows:
- Run valve to desired position due to be indicated by the corresponding switch.
- Proceed to turn the setting spindle belonging to the appurtenant switch until the switch is
tripped (audible click).
- Run thrust actuator briefly in both directions, checking and, if need be, correcting the
setting.
The actuating feature on the travel switches is designed in such a way that both travel
switches can be overrun in both directions.
Standard design:
For that reason, care should be taken on additional travel switches to see that the actuating
state of the switches remains active only for a short time while the thrust actuator continues
to run and that switching back takes place afterwards.
The actuating state of the travel switches remains in force over a lift of 4 mm.
Special design:
At additional travel switches with extended switch levers, the actuating state of the travel
switches remains in force over a lift of 49 mm.