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RITE-HITE RHH - User Manual

RITE-HITE RHH
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RHH Hydra-Rite
TM
/ Base
Dock Leveler
Owners Manual
This Manual Covers Dock Levelers Built After Serial Numbers:
05BD480001M and up
PRINTED IN U.S.A.
RITE-HITE PRINT SHOP
PUBLICATION NO. 1210
NOVEMBER 2009
MADE IN U.S.A.
part of the SMOOTH TRANSITION DOK SYSTEM
TM
RHH HYDRA-RITE
TM
Dock Leveler Shown

Table of Contents

Questions and Answers

  • M
    Michael GarciaJul 29, 2025
    Why my RITE-HITE RHH platform does not raise?
    • C
      Christopher GarciaJul 29, 2025
      There are several potential reasons why the platform may not be raising: * The power may be disconnected. Ensure that the power is connected and that the disconnect circuit breaker or fuses are not tripped. * The motor may be miswired. Verify that the motor has been wired according to the motor wiring diagram. * The overload may have tripped. Push the RESET button on the overload relay. * Debris may be lodged on or around the leveler. Inspect and remove any materials that may be obstructing the leveler. * The hydraulic fluid level may be low. Check the oil level when the unit is held open with the maintenance support and refill if necessary.
  • T
    Taylor EricksonAug 2, 2025
    Why RITE-HITE Lifting Systems platform raises very slowly?
    • K
      keithjohnAug 3, 2025
      The platform might be raising slowly due to: 1. Weight on the platform: Remove any weight from the platform. 2. Low hydraulic fluid level: Check the oil level when the unit is held open with the maintenance support. Refill if needed. 3. Low voltage: Verify that the voltage is within ± 10% of the nominal voltage while the unit is running. 4. Power unit/pump/motor failure: In this case, replace the power unit assembly.
  • S
    Stephen AndersonAug 7, 2025
    What to do if RITE-HITE Lifting Systems platform does not lower?
    • R
      Rhonda ZimmermanAug 7, 2025
      If the platform does not lower, it could be due to: * A locked-up velocity fuse. Try raising the unit to unlock the velocity fuse. * Debris lodged on or around the leveler. Check for and remove any lodged debris.
  • A
    Amy RichardsAug 12, 2025
    Why RITE-HITE RHH Lifting Systems lip extends slowly, or does not extend at all?
    • D
      davidcookAug 12, 2025
      If the lip extends slowly or not at all, consider the following: * Debris on the lip hinge: Remove any debris from the lip hinge. * Lip impacted or bent: Lubricate the lip according to maintenance procedures, or replace the lip if necessary. * Low hydraulic fluid level: Check the oil level when the unit is held open with the maintenance support and refill if needed.
  • J
    Jessica JohnsonAug 18, 2025
    How to fix RITE-HITE RHH lip that does not store properly?
    • B
      Benjamin BushAug 18, 2025
      If the lip doesn't store properly: * Verify that the lip stop bolt is adjusted correctly. * Remove any debris that may be obstructing the lip. * Repair or replace the lip supports if they are damaged.
  • S
    scottgarciaAug 23, 2025
    Why RITE-HITE RHH Lifting Systems leveler runs continuously?
    • R
      Russell HarrisAug 23, 2025
      If the leveler runs continuously, the pushbutton, contact block, or motor contactor may be damaged. In this case, repair or replace the faulty components.

Summary

NOTICE TO USER

Product Specific Warranty

Details Rite-Hite's product warranty coverage and terms.

Planned Maintenance Program

Information on Rite-Hite's maintenance service offerings for specific operations.

SAFETY WARNINGS

Lockout;Tagout Procedures

Essential steps for safely de-energizing equipment during maintenance.

Hazard Level Definitions

Explains the meaning of DANGER, WARNING, and CAUTION safety statements.

OPERATIONAL SAFETY GUIDELINES

Important Operational Warnings

Critical safety warnings for operating the dock leveler.

Maintenance Safety Precautions

Safety measures to follow before and during maintenance.

SAFETY DEVICES

Safe-T-Strut Installation Procedure

Step-by-step guide for installing the Safe-T-Strut support device.

Barricading and Warning Procedures

Guidelines for securing work areas and posting warnings during service.

OWNER RESPONSIBILITY

User Duties and Training

Outlines owner's responsibilities for training personnel and verifying information.

Equipment Care and Modifications

Owner's role in maintaining equipment and managing modifications.

OPERATION INSTRUCTIONS

Normal and Below Dock Operation

Instructions for standard dock leveler operation and below dock loading.

End Loading Operation

Procedures for performing end loading operations with the dock leveler.

Storing the Leveler

Steps for returning the dock leveler to its stored position.

MAINTENANCE PROCEDURES

Suggested Maintenance Schedule

Recommended daily, 90-day, and 360-day maintenance tasks.

Shoulder Bolt Torque Specifications

Torque values for shoulder bolts on Safe-T-Lip equipped units.

LUBRICATION CHARTS

RHH Hydra-Rite Lubrication Guide

Identifies lubrication points and types for Hydra-Rite™ units.

RHH Base Lubrication Guide

Identifies lubrication points and types for Base units.

Lip Stop Bolt Adjustment

How to adjust the lip stop bolt for proper storage positioning.

HYDRAULIC LEVELER ADJUSTMENTS

ARTD Limit Switch Cam Adjustment

Procedure to adjust the ARTD limit switch cam for proper function.

Hydraulic Valve Adjustments

Adjusting shuttle valves for controlled descent speed.

Sequence Valve Adjustment

Adjusting the sequence valve for proper lip extension timing.

TROUBLESHOOTING

Hydraulic Powered Leveler Issues

Common problems and their solutions for hydraulic dock levelers.

HYDRAULIC SCHEMATICS

Hydra-Rite Hydraulic Schematic

Diagram illustrating the hydraulic system of the Hydra-Rite™ model.

Base Hydraulic Schematic

Diagram illustrating the hydraulic system of the Base model.

ELECTRICAL INFORMATION

Electrical Wiring Charts

Tables showing motor loads and minimum wire sizes for electrical connections.

ELECTRICAL SCHEMATICS

Base Unit Control Box Schematics

Wiring diagrams for various control box types used in Base units.

REPLACEMENT PARTS

Hydra-Rite Unit Parts List

Illustrated parts breakdown and list for Hydra-Rite™ dock leveler units.

Base Unit Parts List

Illustrated parts breakdown and list for Base dock leveler units.

Control Box Parts

List of replacement parts for Type 1 control boxes.

HYDRAULIC REPLACEMENT PARTS

Hydra-Rite Hydraulic Parts List

Illustrated parts breakdown for Hydra-Rite™ hydraulic components.

Base Hydraulic Parts List

Illustrated parts breakdown for Base hydraulic components.

Automatic Return to Dock Parts

Replacement parts specific to the Automatic Return to Dock feature.

Endload Leg Option Parts

Replacement parts for the optional endload leg feature.

STANDARD WARRANTY

Rite-Hite Standard Warranty Terms

Defines the warranty period, coverage, and limitations for Rite-Hite products.

Limitation of Liability

States Rite-Hite's liability limits regarding product use and damages.

RITE-HITE RHH Specifications

General IconGeneral
BrandRITE-HITE
ModelRHH
CategoryLifting Systems
LanguageEnglish

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