RITE-HITE VBR-300 DOK-LOK

Questions and Answers

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Stephanie MunozAug 5, 2025
What to do if RITE-HITE Industrial Equipment DOK-LOK lights are flashing but the barrier doesn't raise or lower properly?
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  wilkinsamandaAug 5, 2025
  If the DOK-LOK Industrial Equipment lights are flashing but the barrier isn't fully raising or lowering, several issues could be the cause. First, check the 5A fuse on the power module and replace it if needed. Ensure the incoming voltage at L1 and L2 is at least 110V, and that the control transformer is properly sized for the load. Verify the LEDs light up when you press the LOCK or UNLOCK button. Also, inspect the push button board and ribbon cable for defects. Examine the hydraulic power unit for issues and repair or replace if necessary. Check for hydraulic hose and fitting leaks, and inspect the lift cylinder for excessive oil. Clear any debris from the roller track and base. Finally, confirm the wiring is correct according to the electrical schematic.
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Kimberly HicksAug 9, 2025
How to troubleshoot a RITE-HITE Industrial Equipment DOK-LOK barrier that does not raise and the lights do not flash?
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  Anthony RaymondAug 10, 2025
  If the DOK-LOK Industrial Equipment barrier isn't raising and the lights aren't flashing, it may be due to a power source malfunction, a failure in the power module, or incorrect wiring. Check the power source, including the building circuit breaker and the 1A and 5A fuses on the power module. Confirm that the appropriate motor output LED lights up when you press the LOCK or UNLOCK button. Also, verify the wiring matches the electrical schematic.
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johnpriceAug 14, 2025
Why is the RITE-HITE Industrial Equipment DOK-LOK horn not working, even though the lights and barrier are operational?
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  Matthew FernandezAug 15, 2025
  If the DOK-LOK Industrial Equipment horn isn't sounding but the lights and barrier are working, the horn could be defective, the CPU module may be damaged, or the wiring might be incorrect. Test the horn by applying 12V DC power; if it doesn't sound, replace it. Check if the LED labeled HORN flashes while in the FAULT state; if it doesn't, replace the CPU module. Verify the wiring matches the electrical schematic.
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William CrosbyAug 20, 2025
What to do if the RITE-HITE Industrial Equipment DOK-LOK barrier is operational but all lights are out?
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  Kimberly OlsonAug 20, 2025
  If the DOK-LOK Industrial Equipment barrier is working but all the lights are out, the bulbs may be burnt out, loose, or missing, the CPU module could be damaged, or the wiring might be incorrect. Check all the bulbs and replace them if necessary. If the ISG and OSR LEDs aren't flashing while in the LOCKED position, or the ISR and OSG LEDs aren't flashing while in the UNLOCKED position, replace the CPU module. Verify the wiring according to the electrical schematic.
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Melanie WebbAug 26, 2025
Why does the RITE-HITE Industrial Equipment DOK-LOK barrier drop during trailer service, causing lights to change or the horn to sound?
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  danieldudleyAug 26, 2025
  If the DOK-LOK Industrial Equipment vehicle restraint is working, but the barrier drops causing lights to change or the horn to sound while the trailer is being serviced, there may be a leak in the hydraulic circuit or air in the hydraulic system. Inspect all hydraulic hoses and fittings for leaks, and check the lift cylinder for excessive oil. Cycle the barrier up and down to purge any excess air from the hydraulic system.
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Daniel BruceAug 30, 2025
Why is the RITE-HITE Industrial Equipment DOK-LOK barrier in the STORED position with an inside green light?
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  Tanya LeonAug 30, 2025
  If the DOK-LOK Industrial Equipment barrier is in the STORED position with an inside green light, the wiring may be incorrect. Verify the wiring of SW1 and SW2 at the control box and outside junction box.

Summary

Safety Warnings

LOCKOUT;TAGOUT Procedures

Procedures for locking out power sources and tagging equipment during maintenance or repair.

Safety Conventions

Explains the meaning of DANGER, WARNING, CAUTION, and IMPORTANT labels used in the manual.

Introduction

Notice to User

Information on contacting RITE-HITE for planned maintenance programs and specific operations.

Owners Responsibility

Definition and Function

Features

Describes the key components and their functions, including R.I.G., roller track, barrier, float mechanism, and sensors.

Typical Installation Views

Installation;Application Information

Inspect DOK-LOK Materials

Instructions to open, inspect, and report any damage or shortage of restraint materials.

Assemble Track To Base

Steps to assemble the roller track to the base, including removing tape and positioning the barrier.

Anchor Installation Instructions

Welding Installation Instructions

Special Application Installation

Roller Track, Front View

Diagram illustrating roller track installation on the front view, highlighting cutting points.

Roller Track, Side View

Diagram showing side view of roller track installation, with shims and lip guide placement.

Install Hydraulic Components

Install Electrical Components

DOK-LOK Power Source

Details on electrical requirements, voltage, amperage, and circuit breaker specifications for the restraint.

Fill and Bleed Hydraulic System

Install Signs

Suggested Component Location

Diagram showing suggested placement of control box, lights, signs, and hydraulic power unit.

Wiring Diagram

Electrical Schematic (Standard)

Electrical Schematic (Optional)

Operating Procedure

STORED State

Describes the 'STORED' position of the barrier, indicating an unsafe condition for forklift operators and safety for truck drivers.

Restraint Locking

LOCK Button Pressed

Details the process when the LOCK button is pressed, and the barrier moves to obstruct the R.I.G.

Restraint LOCKED

Restraint UNLOCKING

UNLOCK Button Pressed

Describes the process when the UNLOCK button is pressed, and the barrier moves to the stored position.

FAULT State

From LOCKING State

Explains fault conditions when the barrier cannot lock the R.I.G. and required actions.

From UNLOCKING State

Explains fault conditions when the barrier cannot retract and required actions.

HORN OVERRIDE State

HORN OVERRIDE Button Pressed

Procedure for using the HORN OVERRIDE button when the trailer is secured by alternate means like wheel chocks.

Maintenance

Daily Maintenance

Routine checks including debris removal, light/horn verification, and bumper inspection.

180 Day Maintenance

Periodic tasks like greasing rollers, inspecting hoses, checking anchors, and performing operational tests.

Troubleshooting

Barrier and Light Malfunctions

Addresses issues with barrier movement, light indicators, and power source problems.

System Faults and Indicator Issues

Covers barrier drop faults, horn sounds, and situations where all lights are out.

Control and Horn Issues

Solves problems with pulsing lights, unresponsive buttons, and silent horns.

Component Testing

Procedures for testing the hydraulic power unit and sensing switches using a multimeter.

Replacement Parts

Standard VBR-300 Exploded View

Illustrated diagram showing the breakdown of standard VBR-300 parts with item numbers for reference.

Standard VBR-300 Replacement Parts List

VBR-300 Hydraulic Parts

Hydraulic Parts Diagram

Exploded view diagram illustrating the hydraulic components of the VBR-300 unit with part labels.

VBR-300 Hydraulic Parts List

Electrical Replacement Parts

Electrical Parts Diagram

Diagram showing the breakdown of electrical components with item numbers for identification.

Electrical Replacement Parts List

Miscellaneous Replacement Parts

Miscellaneous Parts Diagram and List

Illustrates miscellaneous replacement parts like signs and decals with their corresponding part numbers.

RITE-HITE Standard Warranty

Limitation of Liability

Outlines the limitations on RITE-HITE's liability for equipment use, damage, or consequential losses.