Yokogawa YVP110 - Manual (Page 10)

<Introduction>
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IM 21B04C01-01E
• Some of the operations will stroke the valve.
Keep clear of the valve while the positioner is
pneumatically or electrically supplied, so as
not to be hit by unexpected movements of the
valve.
• In case where ambient temperature is high,
care should be taken not to burn yourself,
because the surface of the body of the
instrument reaches a high temperature.
• All installation shall comply with local installation
requirement and local electrical codes.
• Do not supply air at a pressure exceeding the
maximum rated air supply pressure. Doing so
may result in a high risk of damage or cause an
accident.
• To avoid injury or the process being affected
when installing or replacing a positioner on a
control valve, ensure that;
1) All inputs to the valve actuator and other
accessories of the valve and actuator,
including air supply and electrical signal, are
cut off;
2) The process has been shut down or the
control valve is isolated from the process by
using bypass valves or the like; and
3) No pressure remains in the valve actuator.
• Auto-Manual switch must not be moved by
anyone except for the authorized engineer.
(b) Wiring
• The instrument must be installed by an expert
engineer or skilled personnel. The procedures
described about WIRING are not permitted for
operators.
• Please confirm voltages between the power
supply and the instrument before connecting
the power cables and that the cables are not
powered before connecting.
(c) Operation
• Wait three minutes after power is turned off,
before opening the covers.
(d) Maintenance
• Only the procedures written in maintenance
descriptions are allowed for users. When
further maintenance is needed, please contact
nearest YOKOGAWA office.
• Care should be taken to prevent the build up of
drift, dust or other material on the data plate. In
case of its maintenance, use clean, soft and dry
cloth.
• The instrument modification or parts
replacement for explosion-protected type
instruments by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void the
approval.
■ Warranty
• The warranty period of the instrument is written
on the estimate sheet that is included with
your purchase. Any trouble arising during the
warranty period shall be repaired free of charge.
• Inquiries with regard to problems with the
instrument shall be accepted by the sales outlet
or our local dealer representative.
• Should the instrument be found to be defective,
inform us of the model name and the serial
number of the instrument together with a
detailed description of nonconformance and
a progress report. Outline drawings or related
data will also be helpful for repair.
• Whether or not the defective instrument is
repaired free of charge depends on the result of
our inspection.
l The following conditions shall not be
eligible for charge-exempt repair.
• Problems caused by improper or insufficient
maintenance on the part of the customer.
• Trouble or damage caused by mishandling,
misusage, or storage that exceeds the design
or specification requirements.
• Problems caused by improper installation
location or by maintenance conducted in a non-
conforming location.
• Trouble or damage was caused by modification
or repair that was handled by a party or parties
other than our consigned agent.
• Trouble or damage was caused by
inappropriate relocation following delivery.
• Trouble or damage was caused by fire,
earthquake, wind or flood damage, lightning
strikes or other acts of God that are not directly
a result of problems with this instrument.
■ Trade Mark
• F OUNDATION Fieldbus is a trademark of the
Fieldbus Foundation.
• Registered trademarks or trademarks
appearing in this manual are not designated by
a TM or ® symbol.
• Other company names and product names
used in this manual are the registered
trademarks or trademarks of their respective
owners.