Precautions for Maintenance
WARNING
If fluid leakage from the valve is found, stay away from the valve until safety can be confirmed.
Depending on the properties of the fluid, a serious accident or injury may result.
CAUTION
Check the gland daily, and tighten the packing if leakage is found.
Check valve operation daily, including a visual check for hunting.
During valve operation, look and listen for unusual noise or vibration.
Handling Precautions
•
Avoid installing the valve where it will be subject to vibration or other external forces
that may affect its performance.
• A packing (gasket) is attached to the cap of auxiliary equipment such as positioners. Do
not lose it during wiring work.
• Take care not to lose screws for the cap of auxiliary equipment such as positioners.
• Make sure that the seal of cable glands and electrical conduits is sufficient to prevent the
entry of moisture.
•
Dispose of old parts that were replaced during valve disassembly or maintenance as
industrial waste. If they are burned or discarded carelessly, environmental pollution will
result.
• When assembling the valve, check that the packing (gaskets) are in place and tighten the
screws evenly.
Check for leaks from
the ange connections
Check for leaks
from the gland
Check the scale
for hunting
Check for
unusual noises
xi
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