RITE-HITE GRH-100 Dok-Lok Owner's Manual
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RITE-HITE GRH-100 Dok-Lok Owner's Manual

RITE-HITE GRH-100 Dok-Lok Owner's Manual

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GRH-100 Dok-Lok
Vehicle Restraint
Owner's Manual
NOTICE TO USER                              2
SAFETY                                      5
COMPONENTS                                6
Control Harness                                 7
Power-Board                                   8
Restraint Micro Board                            9
Wiring: Corner-Vu/Leveler-Vu                     11
Wiring: Pedestrian-Vu                           12
Wiring: Outside Light Box                         14
OPERATION                                  15
MAINTENANCE                               20
Planned Maintenance                           21
Motor Torque                                  22
Component Testing                             23
LED Status Chart                               24
Setting Horn Override Code                       24
Diagnostics Mode                               25
PARTS
Track                                        27
Carriage                                      28
Motor/Hook                                    29
Electrical                                      30
Signs                                        32
WARRANTY                                  36
Model: GRH-100
Language: English
Publication: AMEN00531 2025-03-03

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Summary of Contents for RITE-HITE GRH-100 Dok-Lok

  • Page 1: Table Of Contents

    ® GRH‑100 Dok‑Lok Vehicle Restraint Owner's Manual NOTICE TO USER                              2 SAFETY                                      5 COMPONENTS                                6 ELECTRICAL...

  • Page 2: Notice To User

    1 This device may not cause harmful interference Rite-Hite reserves the right to substitute and/or modify parts and drawings If separate prints are included with 2 This device must accept any interference received, including...

  • Page 3: Owner Responsibility

    Your local Rite-Hite representative offers owners the option of a Planned Maintenance Program (PMP) As part of this service, your local Rite-Hite representative will do all routine maintenance, lubrication, and adjustments 6 Dock equipment that is structurally damaged shall be removed from service, inspected by a manufacturer’s...
  • Page 4 The normal mode of the hook is in the lower STORED Definition and Function position, showing a flashing red light (transport vehicle not The GRH-100 Dok-Lok vehicle restraint is an secured) at the inside of the building and a flashing green electromechanical, self-aligning restraint device used...

  • Page 5: Safety

    Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual SAFETY Safety Identifications Lockout Procedure Barricade work area and post safety warnings DANGER Power supply and control must: • Be disconnected or locked in OFF position Indicates a hazardous situation which, if not using a lockout device approved by local avoided, will result in death or serious injury.

  • Page 6: Components

    ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual COMPONENTS A Anchor Kit B Carriage Return Springs C Control Box D Control Harness E Drive Gear F Electric Motor Assembly G Hook H Inside Sign Limit Switches J Lower Spring Bar K Outside Lights...

  • Page 7: Electrical

    Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual ELECTRICAL Control Harness MOTOR Motor PLUG Plug PLUG Plug LIGHT Light bushing control cord grip Cord Grip harness Grommet Grommet Grommet Control Harness Control Harness Control Harness Locknut with Gasket locknut with gasket Figure 2 Publication: AMEN00531 2025‑03‑03...

  • Page 8: Power-Board

    ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual ELECTRICAL Power‑Board <GRH7 Schem 230214 Page 1pdf> Figure 3 Publication: AMEN00531 2025‑03‑03...

  • Page 9: Restraint Micro Board

    Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual ELECTRICAL Restraint Micro Board <GRH7 Schem 230214 Page 2pdf> Figure 4 Publication: AMEN00531 2025‑03‑03...
  • Page 10 ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual ELECTRICAL Restraint Micro Board Continued <SHR Schem 230202 Page 3pdf> Figure 5 Publication: AMEN00531 2025‑03‑03...

  • Page 11: Wiring: Corner-Vu/Leveler-Vu

    Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual ELECTRICAL Wiring: Corner‑Vu/Leveler‑Vu <Rite-Vu Schematic 22-12-8pdf> Figure 6 Publication: AMEN00531 2025‑03‑03...

  • Page 12: Wiring: Pedestrian-Vu

    ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual ELECTRICAL Wiring: Pedestrian‑Vu Leveler Stored to Unlock Restraint <Rite-Vu Schematic 22-12-8pdf> Figure 7 Publication: AMEN00531 2025‑03‑03...
  • Page 13 Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual ELECTRICAL Wiring: Pedestrian‑Vu Continued Leveler Stored to Close Overhead Door <Rite-Vu Schematic 22-12-8pdf> Figure 8 Publication: AMEN00531 2025‑03‑03...

  • Page 14: Wiring: Outside Light Box

    ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual ELECTRICAL Wiring: Outside Light Box Light Lamp Green Light Green Lamp #42 Wire − Any pin on J2 term − For Gen2 − OSPWR term Light Box Cover for URC − 42 term on SDL...

  • Page 15: Operation

    Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual OPERATION WARNING Before loading or unloading a vehicle at your loading dock while using a Dok‑Lok vehicle restraint, always visually confirm barrier blocks R.I.G. assembly. Secure transport vehicle by other means, if a condition occurs that cannot be fixed by backing transport vehicle firmly against dock bumpers.
  • Page 16 ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual OPERATION RESTRAINT DEFAULT STATUS CONTROL BOX: STATE POSITION INSIDE LIGHTS, SOUND OUTSIDE LIGHTS UNLOCKED Hook is in STORED position DO NOT ENTER TRAILER ENTER TRAILER Visually inspect before loading/ If red light is on and/or horn sounds, DOK-LOK is not unloading vehicle.
  • Page 17 Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual OPERATION RESTRAINT DEFAULT STATUS CONTROL BOX: STATE POSITION INSIDE LIGHTS, SOUND OUTSIDE LIGHTS Restraint LOCKED When RIG is entrapped by hook, DO NOT ENTER TRAILER a LOCKED condition exists ENTER TRAILER If during loading/unloading inside...
  • Page 18 ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual OPERATION RESTRAINT DEFAULT STATUS STATE CONTROL BOX/INSIDE LIGHTS OUTSIDE LIGHTS FAULT FROM LOCKING Restraint does not engage correctly (eg obstruction, bent, DO NOT ENTER TRAILER mislocated, or missing RIG may not allow hook to entrap...
  • Page 19 Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual OPERATION RESTRAINT DEFAULT STATUS STATE CONTROL BOX/INSIDE LIGHTS OUTSIDE LIGHTS HORN OVERRIDE DO NOT ENTER TRAILER DANGER ENTER TRAILER Before operating HORN OVERRIDE, secure transport Visually inspect before loading/ If red light is on and/or horn unloading vehicle.

  • Page 20: Maintenance

    NOTICE • Release the pushbutton on powered levelers allowing the Safe-T-Strut™ to rest on the Contact Rite-Hite if loading docks are exposed to underside of lip harsh environments (extreme climates, corrosive chemicals, high usage, etc) More frequent...

  • Page 21: Planned Maintenance

    Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual MAINTENANCE Planned Maintenance P.M. IN DAYS INSPECT AND PERFORM:    Remove debris around Dok-Lok vehicle restraint    Verify horns, inside and outside lights are working    Replace damaged or missing light bulbs and lenses ...

  • Page 22: Motor Torque

    ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual MAINTENANCE Motor Torque Inspect the drive chain (A) for dirt and chain tightness: 1 Open the motor enclosure 2 Clean the chain with solvent 3 Spray the chain with chain spray type lubricant...

  • Page 23: Troubleshooting

    Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual TROUBLESHOOTING Component Testing Limit Switch 1 Set multimeter for "Continuity Test" or use a continuity Plunger released = No meter reading test lamp Plunger depressed = a "Full Scale" meter reading 2 Attach multimeter/continuity test lamp leads to pins...

  • Page 24: Led Status Chart

    ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual TROUBLESHOOTING LED Status Chart POWER MICRO CONTROL BOARD BOARD ? = Varies (per operation) INPUTS OUTPUTS * = On for 15 sec before M2 energizes PUSH FIELD 12VDC RELAY 115/230VAC BUTTONS A = Alternating...

  • Page 25: Diagnostics Mode

    Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual TROUBLESHOOTING Diagnostics Mode Diagnostic mode may be entered while restraint is in any state To enter diagnostic mode: 1 Press and hold DIAGNOSTIC button until horn chirps (≈ 5 seconds). 2 Press LOCK button...
  • Page 26 ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual TROUBLESHOOTING Diagnostics Mode Continued Steps 17-21 (Diagnostic Sequence) are used to test mechanical Inputs and Outputs of lock (motor, limit switches, etc) • When controls enter Steps 17-21, horn will chirp to alert operator to check hook position •...

  • Page 27: Track

    Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual PARTS Track <012925 GRH1 Track Partspdf> DESCRIPTION PART # Roller Track 0177357 Spring Bar 0177348 Nut, Serrated Flange (7/16"-14) 0051549 Extension Spring 0146443 Spring Cover Kit, Left 0183439 - Includes items 5, 7 & 8...

  • Page 28: Carriage

    Control Harness 180"L 933103 Doklok decal sheet 0180537 Control Harness 240"L 933104 Carriage Roller 0119584 Call Rite-Hite for other lengths Slope Extension Kit - Includes items 5 - 8 0183441 Harness Lock Nut 0055791 Slope Extension 0177353 Harness Grommet 0174137 Slope Extension Clevis Pin, 1"...

  • Page 29: Motor/Hook

    Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual PARTS Motor/Hook DESCRIPTION PART # DESCRIPTION PART # Hook Kit - Includes items 1 - 3 0183449 Cam Kit - Includes items 14 - 18 0183447 Hook 0139760 0140376 Key (1/4" x 1/4" x 1-1/4"L)

  • Page 30: Electrical

    ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual PARTS Electrical <Enclosure Layout 2020-07-01pdf> Publication: AMEN00531 2025‑03‑03...
  • Page 31 Standard Enclosure with decals, English 865102 *Not Shown Enclosure with decals other than above 865xxx** **Consult Rite-Hite for part number (Consult Rite‑Hite for specific part number) 302* Electrical schematic decal (Consult 870xxx** Rite‑Hite for specific part number) 303*...

  • Page 32: Electrical - Outside Signal Light Assembly

    ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual PARTS Electrical – Outside Signal Light Assembly Signs 10 in 10” (254 mm) 8 in 8” (203 mm) 105 in 10.5” (267 mm) DESCRIPTION PART # LED Outside Light Assembly RED/GRN, 0155402 2525 in Complete 25.25”...
  • Page 33 Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual Publication: AMEN00531 2025‑03‑03...
  • Page 34 ® ® GRH-100 Dok-Lok Rite-Hite Owner's Manual Publication: AMEN00531 2025‑03‑03...
  • Page 35 Rite-Hite ® GRH-100 Dok-Lok ® Owner's Manual Publication: AMEN00531 2025‑03‑03...

  • Page 36: Limited Product Warranty

    Product claimed to be defective and shall, at Rite-Hite's option, either (x) grant Rite-Hite or its agent access to Owner's premises for the purpose of repairing or replacing the Product or (y)

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