Multi-Turn Actuator (With Output Drive Type A): Mount To Valve - AUMA SA 25.1 Operating Instructions Manual

Assembly

4.3.1.2. Multi-turn actuator (with output drive type A): mount to valve

18
SA 25.1 SA 48.1/SAR 25.1
Figure 15: Assembly of output drive type A
[1] Valve stem
[2] Output drive type A
[3] Screws to actuator
[4] Valve flange
[5] Screws to output drive
1. If the output drive type A is already mounted to the multi-turn actuator: Loosen
screws [3] and remove output drive type A [2].
2. Check if the flange of output drive type A matches the valve flange [4].
3. Apply a small quantity of grease to the valve stem [1].
4. Place output drive type A on valve stem and turn until it is flush on the valve
flange.
5. Turn output drive type A until alignment of the fixing holes.
6. Screw in fastening screws [5], however do not completely tighten.
7. Fit multi-turn actuator on the valve stem so that the stem nut dogs engage into
the output drive sleeve.
The flanges are flush with each other if properly engaged.
8. Adjust multi-turn actuator until alignment of the fixing holes.
9. Fasten multi-turn actuator with screws [3].
10. Fasten screws [3] crosswise with a torque according to table.
Table 7:
Tightening torques for screws
Threads
M16
M20
M30
M36
11. Turn multi-turn actuator with handwheel in direction OPEN until valve flange
and output drive A are firmly placed together.
12. Tighten fastening screws [5] between valve and output drive type A crosswise
applying a torque according to table.
SAR 30.1 Control unit: electronic (MWG)
AC 01.2 Non-Intrusive Modbus RTU
Tightening torque [Nm]
Strength class
8.8
214
431
1,489
2,594
A2-80
200
392
1,422
2,481