
APV_CU4 AS-i_UK-5_072018.indd
UK
Control Unit
CU4 AS-interface
Instruction manual: UK - rev. 5
APV
35
8. CU Assembly and Startup
8.3.4 Startup
After proper assembly and installation of the control unit, startup can
be undertaken as described below:
1.
Switch on the air supply.
2.
Switch on the voltage supply.
3.
Check the solenoid valves by turning the lever on the upper side of
the valve by 90°.
4.
Check the valve position indicator. The proximity switches are
installed at the double seat valves with a mechanical stop.
Adjustment is not required!
The following allocation applies for double seat valves:
Closed valve position feedback – sensor 1 controlled
Open valve position feedback – sensor 2 controlled
Check the proper fit of the proximity switches to provide for
the accurate transfer of the signals for the corresponding valve
position.
lever
solenoid valve