Helac L20 Series - User Manual

Questions and Answers

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haleybrownJul 28, 2025
Why Helac L20 Controller shaft rotates slowly?
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  maddoxmelvinJul 28, 2025
  If the Helac Controller shaft rotates slowly or not at all, it could be due to insufficient torque output. Verify the correct operating pressure, ensuring you do not exceed the OEM's pressure specifications, and check that the load is not above the actuator's maximum capacity. Another cause might be a low rate of fluid flow. Inspect the ports for any obstructions and the hydraulic lines for restrictions and leaks.
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Alicia McdonaldAug 16, 2025
How to fix erratic operation of Helac Controller?
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  Michael ShepardAug 16, 2025
  If the Helac Controller operation is erratic or not responsive, it is possible that there is air in the actuator. Purge the air from the actuator.
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rossandrewNov 5, 2025
What to do if Helac L20 Controller shaft will not fully rotate?
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  Jeffrey ThomasNov 5, 2025
  If the Helac Controller shaft will not fully rotate, several issues could be the cause. First, a control or counterbalance valve may have an internal leak. Disconnect the hydraulic lines and bypass the valve, leaving the valve ports open, and operate the actuator through the housing ports, being careful not to exceed the OEM's operating pressure. If a steady flow of fluid is seen coming from the valve ports, the valve must be replaced. Another potential cause is a piston and/or shaft seal leak. Remove the plug and the housing's valve ports, then operate the actuator through the housing ports. Check the thread length of port fittings, ensuring they do not reach inside the housing bore. Twisted or chipped gear teeth from overload conditions can also prevent full rotation, check for any bindi...