11.
Setting the torque switching
11.1 Setting
.
The set torque must suit the valve!
.
This setting must only be changed with the consent of the
valve manufacturer!
If two torque switches are installed, the inner torque switch is for the closing
direction, clockwise rotation, the outer torque switch is for opening direction,
counterclockwise rotation (see symbols).
.
Loosen lock screw O (figure K).
.
Turn cam P for setting to the required torque.
The numbers on the dial indicate the values in mkp
(1 mkp ~ 10 Nm, 1 lbsft ~ 1.36 Nm).
Example:
Setting in figure S:
12 mkp ~ 120 Nm
.
Tighten lock screw O again
.
The torque switches can also be operated in manual
operation.
.
The torque switching acts as overload protection over full
travel, also when stopping in the end positions by limit
switching.
16
Multi-turn actuators SAI 6 – SAI 100 / SARI 6 – SARI 100
for valve automation Inside Containment in nuclear power plants
Operation instructions
P
O
p
4
81
0
Figure K: Torque switching head
Setting OPEN
Setting CLOSED
Torque switch, counter-
clockwise opening TSO
Symbol:
Torque switch,
clockwise closing TSC
Symbol:
TSO
TSC
