Function - Burkert 2103 Manuel D'utilisation

6.2

Function

Spring force (CFA) or pneumatic pilot pressure (CFB and CFI)
generates the closing force on the diaphragm pressure piece. The
force is transferred via a spindle which is connected to the actuator
piston.
6.2.1 Control functions (CF)
Control function A (CFA)
Normally closed by spring action
Control function B (CFB)
Normally open by spring action
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Type 2103, 2104, 2105
Structureandfunction
Control function I (CFI)
Actuating function via reciprocal pressurization.
WARNING!
For control function I – Danger if pilot pressure fails!
For control function I control and resetting occur pneumatically. If
the pressure fails, no defined position is reached.
▶ To ensure a controlled restart, first pressurize the product with
pilot pressure, then switch on the medium.