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Control Unit CU4 Direct Connect UK-3 / 20.04.2011
Control Unit
CU4 Direct Connect
Instruction Manual: UK-3
UK
APV
11. Trouble Shooting
F a i l u r e
R e m e d y
Valve position is not indicated.
Re-adjust Hall sensors.
Check fastening of magnetic operating cam.
Check cabeling of the Hall sensors to the electronic
module.
Feedback via proximity switches is missing
Check positioning of proximity switches.
Check operating voltage.
Check cabeling to the electronic module.
LED indication is missing
Check operating voltage.
Check cabeling to the electronic module.
Control Unit CU41 installed on Butterfly valves
Movement of valve flap is missing
with actuated solenoid valve.
Check if right control unit is installed.
Check label in type window of control unit:
CU41-T-Direct Connect (1 EMV/solenoid valve)
Check valve movement with manual at solenoid valve.
Check cabeling between electronic module and solenoid
valve.
Check compressed air (min. 6bar).
Bore for transfer of control air to turning actuator must be
open.
Air leakage at lower side of adapter.
Check o-rings of adapter.
