Burkert Type 2036 - Manual (Page 16)

16
Structureandfunction
Type 2036
6.1.1. actuator
The actuator has two actuator chambers that can be controlled
independently of each other and act on one body seat each (double
action). Where only one actuator is in operation only one actuator
chamber is equipped with the internal functional parts.
Spring force (CFA, NC) or pneumatic pilot pressure (CFB, NO)
generates the closing force of the actuator.
The force is transmitted onto the corresponding pressure piece and
the diaphragm in each case via a spindle connected to the actuator
piston.
6.1.2. control functions (cf)
control function a, nc (cfa)
Closed by spring force in rest
position
1(P)
2(A)
control function B, nO (cfB)
Opened by spring force in rest
position
1(P)
2(B)
6.2. position indicator
The position of both actuator chambers is signaled via position indi-
cators. Two positions are possible:
• Short protrusion of the position indicator → valve closed.
• Long protrusion of the position indicator → valve open
Caution!
risk of being crushed by moving spindle ends.
▶ Install transparent cap.
Short protrusion
Long protrusion
Transparent cap
removed
Fig. 13: Position indicator
english