APV_CU4 AS-i_UK-5_072018.indd
UK
Control Unit
CU4 AS-interface
Instruction manual: UK - rev. 5
APV
11
4. MechanicsandPneumatics
4.3. Pressurereliefvalve
The base of the control unit is equipped with a pressure relief valve
which prevents an inadmissible pressure build-up in the inner
control unit.
If required, the pressure relief vents into the clearance between the
base and the adapter of the control unit.
The pressure relief valve must not be mechanically blocked
under any circumstances!
DANGER
DANGER