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LCN 4640-3077AL

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LCN 4640-3077AL Regular Push Arm - CL

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LCN 4640-3077AL Regular Push Arm - CL
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Price: $117.45 USD
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Product Description:
LCN 4640-3077AL Regular Push Arm - CL
  • Regular Push Arm
  • CL
  • Use for: Door Closers > Automatic Door Openers > Parts > LCN > Regular Push Arm - CL
Questions and Answers
Q: Why would a 4600 not open a full 90 degrees?
A: A 4600 (4630/4640) not opening to a full 90 degrees could be caused by a couple things:

  • The Opening Force could be set too low. Try increasing the opening force adjustment on the controller a 1/4 turn clockwise. If the Opening Force adjustment is at max and the door will still not open completely, could be a defective closer or motor/clutch assembly.
  • The Closer Arm could be installed incorrectly (off one flat and preloaded to far). This can be verified by opening the door manually to 90° and hold it in the open position. Then turn on hold open switch. When motor stops turning, release door. If door falls back to less than 90° (approx 70°), arm is installed incorrectly. If the door holds open at 90°, then the arm was installed correctly, and it could be a defective closer or motor/clutch assembly.

    A 4600 (4630/4640) motor continuing to run after door opened to a full 90 degrees could be caused by:

  • The opening force set to high. Turn unit off, and adjust opening force down slightly. Turn unit on and cycle. Repeat process
    • (Required, used to email you once question is answered.)
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