RITE-HITE DOK-LOK RHR-600 User Manual (English)

Questions and Answers:

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johnsonbenjaminAug 13, 2025
What to do if the DOK-LOK vehicle restraint lights are flashing, but the hook does not raise/lower fully?
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  Mr. Theodore FowlerAug 13, 2025
  If the DOK-LOK vehicle restraint hook doesn't fully raise or lower while the lights are flashing, there might be a few reasons. The chain could be loose or broken, requiring adjustment or replacement. The circuit breaker on the power module might be tripped and needs resetting. Low incoming voltage (less than 110V at L1 and L2) could be the issue. A power module failure, lack of push button inputs, or a defective drive motor could also be the cause. It is also important to verify the wiring.
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John GarciaAug 17, 2025
Why is my RITE-HITE DOK-LOK vehicle restraint hook not raising and the lights not flashing?
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  Johnathan LangAug 17, 2025
  If the DOK-LOK vehicle restraint hook isn't raising and the lights aren't flashing, it could be due to a power source malfunction, a failure in the power module, or incorrect wiring. You should check the power source, including the building circuit breaker, the 1A fuse, and the circuit breaker on the power module. Ensure the correct motor output LED lights up when you press the LOCK or UNLOCK button. Also, verify the wiring.
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Stephen WebsterAug 20, 2025
What to do if the RITE-HITE DOK-LOK vehicle restraint is operational, but the hook drops while the trailer is being serviced?
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  nrobertsAug 20, 2025
  If the DOK-LOK vehicle restraint hook drops while the trailer is being serviced, it could be due to a defective drive motor, low clutch torque, or a loose/broken chain. Check the motor. If the clutch torque is less than 500 in-lbs, replace it. Adjust or replace the chain as needed.
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joseph01Aug 25, 2025
How to fix a RITE-HITE DOK-LOK vehicle restraint when the hook is operational but all the lights are out?
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  Timothy WagnerAug 25, 2025
  If the DOK-LOK vehicle restraint hook is working but all the lights are out, the bulbs may be burnt out, loose, or missing, so check all bulbs and replace as needed. It could also be a damaged CPU module: if the ISG and OSR LEDs aren't flashing when locked, or the ISR and OSG LEDs aren't flashing when unlocked, replace the CPU module. Also, verify the wiring.
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Kathryn WatsonAug 28, 2025
Why does the RITE-HITE DOK-LOK vehicle restraint horn not sound, but the lights and hook are working?
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  Lauren ReyesAug 28, 2025
  If the DOK-LOK vehicle restraint horn isn't sounding while the lights and hook are working, the horn itself might be defective. Try powering the horn with 12V DC; if it doesn't sound, replace it. A damaged CPU module could also be the cause, or incorrect wiring.
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Luke WeberAug 31, 2025
What does it mean if the RITE-HITE DOK-LOK vehicle restraint inside red light and horn double pulse?
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  Diane Brown DVMAug 31, 2025
  If the inside red light and horn on your DOK-LOK vehicle restraint double pulse, it indicates a limit switch fault. To resolve this, check the LS1 limit switch if the hook is in the stored position, and check the LS2 limit switch if the hook is in the LOCKED position. Replace them if necessary.
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Lisa WardSep 4, 2025
Why is the RITE-HITE DOK-LOK vehicle restraint carriage not returning to a full up position?
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  thomas41Sep 5, 2025
  If the DOK-LOK vehicle restraint carriage isn't returning to the full up position, it could be binding in the track, the roller track plate might be damaged, or the springs could be broken or weak. Check if the roller track plate and rollers are clean, free of debris, and lubricated with approved grease. Make sure the roller track plate is straight and undamaged. If needed, remove the spring cover and replace the springs.
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Donna KruegerSep 8, 2025
What could cause a RITE-HITE DOK-LOK vehicle restraint hook to be in the stored position with an inside green light?
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  Brandi HardySep 8, 2025
  If the DOK-LOK vehicle restraint hook is in the stored position with an inside green light, it may be due to incorrect wiring. Verify the wiring of SW1 and SW2 at the control box and outside junction box.