Owner's manual
IM 12B06K07-E-E
1. Safety and protection measures
1.1 General notes on safety
The control unit RF20C (EXmatic 460) is designed in 
such a way that the product does not present any 
risk if the operating instructions are adhered to.
•  Read the operating instructions first.
•  Only assemble and operate the control unit if you 
have read and understood all notes on safe and 
proper use.
•  Keep the operating instructions in order to consult 
it any time. 
•  Only operate the control unit and its accessories if 
they are in an impeccable condition.
•  In addition, also observe the laws, ordinances, 
regulations and standards applicable in the 
country of use and at the place of use.
1.2 Intended use 
The control unit RF20C (EXmatic 460) is used 
for controlling pneumatic retractable fittings. The 
RF20C (EXmatic 460) controls the movement of the 
retractable fitting from the measurement position 
to the service position and the process of the 
automatic rinsing of the sensor in the rising chamber 
of the fitting.
The design of the control unit must be suited  
to the used retractable fitting. 
The control unit must be maintained on a  
regular basis. 
•  Establish a maintenance plan which is adjusted to 
your process.
•  Only carry out maintenance work which is 
described in the operating instructions! 
•  The control unit may only be modified after 
consulting the manufacturer.
The manufacturer does not assume any liability for 
damages arising from improper  
or unintended use.
1.3 Danger areas and residual dangers
Control units control retractable fittings which are 
connected to containers and pipes which can be 
under pressure. Process fluid can only escape in 
case of careless actions or improper operation.
•  Ensure prior to start-up that the connected 
retractable fitting is suited and able to function.
•  Carefully read the operating instructions of the 
used retractable fitting and observe the notes on 
safety contained in it.
•  Take appropriate protection measures before 
starting the control unit or connecting to the 
retractable fitting.
1.4 Resources
Only use checked and approved accessories and 
resources.
 Supply voltage  Make sure you have the correct 
supply voltage and follow the 
information in the chapter “technical 
data”.
  Compressed  Filter (40 m), clean and deoil the 
  air compressed air.
   Make sure that the pressure is 
between 4 and 6 bar.
 Rinsing fluid/ Use rinsing fluids and cleaning 
 cleaning agent  agents which are both adapted 
to the process, the retractable 
fitting and the sealing material and 
dispose of them properly.
1.5 Personnel
  Qualification Trained skilled workers may operate 
and maintain the control unit only!
  Protective The operating personnel must wear
  clothing suitable protective clothing during 
start-up and maintenance work.
  Accident  Observe the rules and regulations
  prevention concerning safety at work 
  rules  applicable in the country of use and 
at the place of use!
1.6 Disposal
Observe the rules and regulations concerning waste 
disposal applicable in the country of use and at the 
place of use.
1.7 Symbols and pictograms
Pictograms and symbols are used in the operation 
manual to provide better orientation.
   The safety note with the DANGER! signal 
indicates the risk of personal danger and 
high material damage in case of failure to 
observe the instructions. 
   The safety note with the CAUTION! signal 
indicates the risk of material damage in case 
of failure to observe the instructions.
  Indicates an important note!
   This sign indicates that the operations 
should be carried out in the specified order.
CAUTION!
DANGER!
WARNING!
CAUTION!
DANGER!
WARNING!
CAUTION!
DANGER!
WARNING!
CAUTION!
DANGER!
WARNING!
CAUTION!
DANGER!
WARNING!










