Gemu 650 - User Manual

Questions and Answers

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Angela SteeleAug 12, 2025
What to do if Gemu Control Unit valve doesn't open or doesn't open fully?
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  mgarciaAug 13, 2025
  If the Gemu Control Unit valve doesn't open fully, consider these possible causes and solutions: * If the control pressure is too low (for control function NC), operate the valve with the control pressure specified in the data sheet. * If the pilot valve is faulty, check and replace it. * If the actuator is defective, replace it. * If the control medium is not connected, connect it. * If the shut-off diaphragm is incorrectly mounted, remove the actuator, check the diaphragm mounting, and replace it if necessary. * If the actuator spring is faulty (for control function NO), replace the actuator.
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Samantha StewartAug 20, 2025
What to do if Gemu Control Unit valve leaks between actuator and valve body?
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  Michael McdonaldAug 20, 2025
  If the Gemu Control Unit valve leaks between the actuator and valve body, consider the following possible causes: * The shut-off diaphragm might be incorrectly mounted. Remove the actuator, check the diaphragm mounting, and replace it if necessary. * The bolting between the valve body and actuator might be loose. Retighten the bolting. * The shut-off diaphragm might be faulty. Check the shut-off diaphragm for potential damage, and replace it if necessary. * The actuator or valve body might be damaged. Replace the actuator or valve body.
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newmanmatthewAug 25, 2025
What to do if Gemu Control Unit valve body connection to piping leaks?
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  David ChenAug 25, 2025
  If the Gemu Control Unit valve body connection to piping leaks, it could be due to: * Incorrect installation. Check the installation of the valve body in the piping. * Loose unions or threaded connections. Tighten the unions or threaded connections. * Faulty sealing material. Replace the sealing material.
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Joanna BellAug 28, 2025
Why control medium escapes from leak detection hole in Gemu Control Unit?
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  Amanda MortonAug 28, 2025
  If control medium escapes from the leak detection hole in your Gemu Control Unit, it is likely due to a leaking spindle seal. Replace the actuator and check the control medium for impurities.
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Denise HowellSep 1, 2025
What to do if Gemu Control Unit valve body leaks?
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  clopezSep 1, 2025
  If the Gemu Control Unit valve body leaks, it may be due to a faulty or corroded valve body. Inspect the valve body for potential damage, and replace it if necessary.
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meghangonzalesSep 4, 2025
Why control medium escapes from vent hole/vent in the actuator cover for control function NC or connector 2 for control function NO in Gemu Control Unit?
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  Stephen JonesSep 4, 2025
  If control medium escapes from the vent hole/vent in the actuator cover for control function NC or connector 2 for control function NO, it could be because the piston is faulty. Replace the actuator.
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Jason LoveSep 8, 2025
What to do if working medium escapes from leak detection hole in Gemu Control Unit?
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  Anthony JohnsonSep 8, 2025
  If the working medium escapes from the leak detection hole, the shut-off diaphragm might be faulty. Check the shut-off diaphragm for potential damage, and replace the diaphragm if necessary.
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stephen10Nov 15, 2025
What to do if Gemu Control Unit valve leaks downstream (doesn't close or doesn't close fully)?
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  Cheryl ScottNov 16, 2025
  If the Gemu Control Unit valve leaks downstream, consider these possible causes and solutions: * If the operating pressure is too high, operate the valve with the operating pressure specified in the datasheet. * If the control pressure is too low (for control function NO and control function DA), operate the valve with the control pressure specified in the data sheet. * If there is foreign matter between the shut-off diaphragm and valve body weir, remove the actuator, remove the foreign matter, and check the diaphragm and valve body weir for potential damage; replace if necessary. * If the valve body weir is leaking or damaged, check the valve body weir for damage and replace the valve body if necessary. * If the shut-off diaphragm is faulty, check the shut-off diaphragm for pot...