Mechanical Stroke Adjustment
5.1.2
Spring-Return Actuators
1.
Connect air supply to the A port. Actuator will move to the open position.
2.
Slacken locknut (24) on the “Closed” stop (2).
Figure 20
A-port
B-port
Stop 1
Stop 2
Stop 1
Stop 2
3.
Turn the “Closed” stop clockwise to reduce or counterclockwise to increase the
travel. Consult Section 5.1.3 (angular displacement of the pinion), to define how
far the limit stop must be turned in or out.
4.
Remove air supply. Actuator will move to the closed position.
5.
Check whether the actuator valve assembly is in the required position.
If not repeat steps 1 to 5.
6.
Remove air supply.
7.
For adjusting the open position repeat steps 1 to 6, but now for the open position
and "Open" stop (1).
Table 11.
Limit Stop Dimensions
Actuator size
Thread
Bolt Wrench
Nut wrench
size (mm)
size (mm)
Q 40
M 8
13
13
Q 65
M 10
17 (16)*
17 (16)*
Q 100
M 10
17 (16)*
17 (16)*
Q 150
M 10
17 (16)*
17 (16)*
Q 200
M 12
19 (18)*
19 (18)*
Q 350
M 16
24
24
Q 600
M 20
30
30
Q 950
M 22
12
32
Q 1600
M 24
14
36
1. Default dimension according DIN933 standard.
2. Dimensions in brackets according ISO4017 standard.
Installation, Operation and Maintenance Manual
DOC.IOM.BQ.E Rev. 3
April 2019
27
Section 5: Mechanical Stroke Adjustment
