APV_CU4plus_AS-interface_UK-3_062019.indd
UK
Control Unit
CU4plus AS-interface
Instruction Manual UK-3
APV
56
10. Service
10.1. Dismantling
Before disassembly, verify the following items:
• The valve must be in safety position and must not be controlled!
• Shut off air supply!
• Cut off current to control unit, i.e. interrupt the supply voltage!
Solenoid valve (4, 5, 6)
+ Open the CU cover by turning in anticlockwise direction.
+ Release the plug connection at the electronic module for the
corresponding solenoid valve.
+ Release and remove the 2 screws (20) TX20.
+ Replace the solenoid valve.
+ Assembly in reverse order. See to a proper fit of the flat seal!
Electronic module (2)
Before releasing the cable connections make sure that all lines
are de-energised!
+ Open the CU cover by turning in anticlockwise direction.
+ Release the plug connection of the solenoid valves.
+ Release the cable from the terminal strip, all terminals 1-8.
+ Release and remove the 3 screws (20) TX20.
+ Replace the electronic module.
+ Assembly in reverse order.
Feedback unit
Before releasing the cable connections make sure that all lines
are de-energised!
+ Open the cover.
+ Release the cable for the linear sensors from the terminal strip,
terminals 3-8.
+ Release the clamp ring and lift the CU4 from the adapter.
+ Remove the 4 screws (9) TX15 at the lower side of the CU base (1).
+ Take out the feedback unit to the bottom.
Linear sensor
The linear sensor can only be replaced at the dismantled feedback
unit.
+ Remove the 2 screws (14) TX10.
+ Release the plug connection at the electronic module.
Dismantle the linear sensor.
+ Assembly in reverse order.
+ Carry out Teach-In.
