Yokogawa Pneumatic Retractables RF20H - Manual (Page 3)

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!