Allied Chemetron 4000 Series

Questions and Answers

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Michelle WardAug 13, 2025
What to do if the Allied Controller LED’s don’t light?
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  Mrs. Autumn MillerAug 13, 2025
  If the LEDs on your Allied Controller don't light up, there are several potential causes: * The On/Off switch may be turned off. Ensure the switch is in the on position. * A fuse may have failed. Replace the fuse. * There might be a loose wire connection. Tighten any loose wire connections. * There may be no power coming in. Measure the power input to ensure it's at 115 VAC. * The power supply may have failed. Measure the power supply output to confirm it's at 15VDC. * The PCB may have failed. Replace the PCB.
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Margaret ShawAug 16, 2025
What to do if Allied Chemetron 4000 Controller 0-5000 PSI Gauge is not showing pressure?
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  Dr. Cathy Crosby MDAug 16, 2025
  If the 0-5000 PSI gauge on your Allied Controller isn't showing pressure, it could be due to several reasons: * The gas cylinders might be empty. Replace the empty tanks. * The inlet valve could be closed. Open the inlet valve. * The gauge itself may have failed. Replace the faulty gauge.
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morenobrittanyAug 20, 2025
Why is there continuous flow of gas through vent line exhaust on my Allied Chemetron 4000?
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  derek39Aug 20, 2025
  A continuous flow of gas through the vent line exhaust in your Allied Controller can be caused by: * A faulty high-pressure relief valve. Replace the high-pressure relief valve. * A faulty line pressure relief valve. Replace the line pressure relief valve. * A faulty solenoid. Replace the solenoid.
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Traci PerryAug 25, 2025
What causes low gas flow in Allied Controller?
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  dunlapdanielleAug 25, 2025
  Low gas flow in your Allied Controller can be attributed to a few potential issues: * The filter upstream of the high-pressure regulator may be blocked. Remove the inlet valve, then inspect and clean the filter. * The filter upstream of the pneumatic switch might be blocked. Remove the 90° elbow on the upstream side of the pneumatic switch, then inspect and clean the filter. * The inlet valve to the manifold might not be fully open, or the cylinder valves aren't fully opened. Open all inlet and cylinder valves on the faulty side of the manifold.
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Karen JohnsonAug 28, 2025
What to do if pressure is dropping simultaneously through both cylinder banks in Allied Chemetron 4000?
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  Kim BrownAug 28, 2025
  If the pressure is dropping simultaneously through both cylinder banks in your Allied Controller, consider the following possibilities: * The pneumatic membrane seal may not be seated, causing gas to flow through both sides of the membrane. Close the reserve bank inlet valve and wait approximately 30 minutes until the membrane seal is made. Then open the reserve side inlet valve. The yellow LED on the reserve side should turn on, indicating normal manifold operation. * There may be a diaphragm failure in the pneumatic switch. Replace the diaphragm. * There may be a solenoid failure. Replace the solenoid. * There may be a check valve failure. Replace the check valve.
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Brett GrayAug 31, 2025
How to fix a leaking high-pressure regulator on Allied Chemetron 4000 Controller?
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  Mason AlexanderAug 31, 2025
  A leaking high-pressure regulator on your Allied Controller could be due to: * A loose regulator cap. Tighten the cap. * Regulator diaphragm leaks. Replace the diaphragm.
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nholtSep 4, 2025
How to fix a leaking low pressure regulator on Allied Chemetron 4000?
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  Kara SummersSep 4, 2025
  A leaking low-pressure regulator on your Allied Controller might be caused by: * A loose regulator cap. Tighten the cap. * Regulator diaphragm leaks. Replace the diaphragm.
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Alexander LeonardSep 8, 2025
What to do if heaters on N2O or C02 manifold aren't working on Allied Chemetron 4000 Controller?
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  gedwardsSep 8, 2025
  If the heaters on your N2O or C02 manifold aren't working on your Allied Controller, check the following: * Loose wiring. Tighten the wiring/connector. * The reset button on the thermostat might be tripped. Push the red button on the thermostat to reset it.