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Caldwell Renfroe J Series Operation And Maintenance Manual

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Before putting tool in service, take the manual to your supervisor.
MODELS J-SERIES CLAMPS
APPLICATION, OPERATION, AND MAINTENANCE MANUAL
Model J
Model JP
Model JA
Model JPA
caldwellinc.com
800.628.4263
815.229.5667

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Summary of Contents for Caldwell Renfroe J Series

  • Page 1 Before putting tool in service, take the manual to your supervisor. MODELS J-SERIES CLAMPS APPLICATION, OPERATION, AND MAINTENANCE MANUAL Model J Model JP Model JA Model JPA caldwellinc.com 800.628.4263 815.229.5667...
  • Page 2 The RENFROE brand has been trusted and preferred by international lifting clamp users for more than 50 years. They are manufactured by The Caldwell Group, Inc. in Rockford, IL, and sold via a worldwide network of stocking distributors who exemplify the same high-quality performance and service standards RENFROE brand stands for.

  • Page 3: Table Of Contents

    Table of Contents Clamp Operation Do’s and Don’ts Definitions Application Operation Maintenance & Inspection Parts Diagram Prior to selection, operation, and/or maintenance of RENFROE products, read and understand the information provided in this manual. The understanding and use of the definitions are important in determining the limitations and proper application of RENFROE products.

  • Page 4: Clamp Operation Do's And Don'ts

    DON’T use large areas, or capacity clamps personnel. to lift light loads. DO lock clamp DO use clamps closed with lock; within their rated DON’T lift DON’T capacity; with lock in overload clamps. open position. Caldwell Quality. Guaranteed.
  • Page 5 ration Do’s and Don’ts DO use enough DON’T rush— DON’T clamps to lift balance load; more than one DON’T lift loads plate at a time that are not with a vertical balanced. clamp. DO always DON’T lift plate refer to pre-lift horizontally with inspection in a vertical lift...

  • Page 6: Vertical Lift

    WARNING: The capacity of all horizontal clamps is based on a sling angle of sixty degrees (60°). Sling angles less than sixty degrees (60°) increase the load exerted on the clamps. Never exceed the rated capacity of a single clamp. Caldwell Quality. Guaranteed.

  • Page 7: Rated Capacity

    WARNING: For applications using clamps with serrated gripping surfaces on finished or polished plates, secure written recommendations from CALDWELL/RENFROE. Structural Members Fabricated Sections Unless otherwise specified, clamps described as capable of handling structural members and fabricated sections are limited to hot-rolled steel whose Brinell Hardness does not exceed 300.

  • Page 8: Operating Temperatures

    RENFROE clamps is from 0°F (-18°C) to a maximum of 200°F (93°C). The minimum and maximum temperatures apply to both ambient and the material being handled by the clamp. WARNING: Secure written authorization from CALDWELL/ RENFROE before using clamps in temperatures other than shown.

  • Page 9: Locking Screw

    Definitions Lock Open Only Normally used on “Hot Lift” clamps and consists of a manually operated “Lock Stop Pin” that is inserted when gripping cam of clamp is retracted and removed when clamp is positioned on the plate. Tag line may be used to permit operator to remove pin from a greater distance from clamp.

  • Page 10: Qualified Person

    An attempt is made herein to warn against reasonable and reasonably foreseeable danger in the proper use and possible reasonable misuse of CALDWELL/ RENFROE products described in this manual. Designated Person A person selected by the employer or the employer’s representative as being competent to perform those specific duties.

  • Page 11: Application

    Application Model J/JP/JA/JPA Clamp Series The Models J, JA, JP & JPA have a lock open and lock closed feature built into their design. The JA, & JPA have an auxiliary lock. The JA, and JPA clamps are recommended for turning of a single steel plate from horizontal to vertical to horizontal through a 180°...
  • Page 12 Application Model J, JP Lock Handle Lock Handle (Must be in this position for turning 90°) Plate 90° Model JA, JPA Lock Handle Lock Handle 180° Plate Auxiliary Lock Button Lock Handle Caldwell Quality. Guaranteed.

  • Page 13: Operation

    Operation Model J/JP/JA/JPA Clamp Series STEP 1 Before using any RENFROE clamp, refer to the Application section to confirm the operation to be undertaken is an appropriate application for this product. STEP 2 Select appropriate capacity and plate thickness. The model designation, capacity, and plate thickness are stenciled on each clamp.
  • Page 14 Shackle Auxiliary Lock Button Lock Handle 1/4" Minimum Adjusting Adjusting Clearance Set Screw Set Screw Lock Pawl Inside Jaw Cam Jaw Opening Plate Gripping Cam Lock Handle JA, JPA “LOCK CLOSED” POSITION JA, JPA “LOCK OPEN” POSITION Caldwell Quality. Guaranteed.
  • Page 15 Operation STEP 4 The clamp is a component of the rigging used in lifting or transporting a plate. It is important to use safe and adequate rigging. The lock is used to hold the clamp in place until the gripping mechanism is actuated by a force applied to the lifting shackle. WARNING: Improper or excessively heavy rigging may interfere with the operation of the clamp and its ability to maintain a proper position on the plate.
  • Page 16 Model JP and JPA incorporates a pivoting shackle that permits side loading of the lifting shackle at 100% of rated capacity from vertical to 30°, 75% of rated capacity between 30° and 45°, and 50% of rated capacity between 45° and 90°. Caldwell Quality. Guaranteed.
  • Page 17 Operation STEP 7 Make certain the gripping surfaces of the clamp are fully in contact with the plate and not partially on and off the edge of the plate. STEP 8 Place the lock lever in the “Lock Closed” position. Lock Pawl must rest on body spacer sleeve. Spring now exerts force on gripping cam.
  • Page 18 RENFROE Repair Kits. Kits contain all parts generally replaced due to normal wear. To order a repair kit, talk to your distributor or call us at 800.628.4263 or 815.229.5667. Caldwell Quality. Guaranteed.

  • Page 19: Maintenance & Inspection

    Choose Factory Refurbish & Recertification Do you currently offer clamp refurbishing and recertifications? Count on CALDWELL/RENFROE to handle refurbishments in total for you or to supplement your in-house capabilities. To begin the quote process or learn more about the program, call our customer service department.
  • Page 20 If during any inspection a condition is found which leads to a periodic inspection, then the next periodic inspection is due from the time the clamp is returned to service. See the table below. Normal Service 1 Year Heavy Service 6 Months Severe Service 3 Months Caldwell Quality. Guaranteed.
  • Page 21 Further information can be found online or from your RENFROE contact. RENFROE Clamps 101: Repair, Rebuild, or Replace? Know your options when you find a lifting clamp that’s showing wear on the CALDWELL blog here: caldwellinc.com/blog caldwellinc.com 800.628.4263 815.229.5667...
  • Page 22 Elongated shackle eye indicates overloading. Elongated shackle pin holes indicate wear and possible overloading. Bent shackles indicate excessive side-loading. WARNING: Replace shackles that are bent, show excessive wear at eye, or have elongated eye or shackle pin holes. Caldwell Quality. Guaranteed.
  • Page 23 Maintenance & Inspection STEP 6 Cam Assembly (JPA-5 in parts diagrams on pages 26 and 27): A. Inspect cams for chipped or worn teeth. Teeth must be sharp and free of foreign matter. B. Inspect cam straps for distortion and fractures. C.
  • Page 24 Set Screw Lock Pawl Lock Handle Lock Spring Lock Pivot (Over Center Lock) (Over Center Lock) Lock Spring Lock Pawl Body Spacer Sleeve Auxiliary Lock Handle Lock Button J, JP “LOCK CLOSED” POSITION JA, JPA “LOCK CLOSED” POSITION Caldwell Quality. Guaranteed.
  • Page 25 Use only RENFROE replacement parts to insure maximum efficiency and safety factor originally built into the product. Refer to CALDWELL Customer Service for instructions on ordering replacement parts. WARNING: Do not weld, grind, or modify the clamp body or component parts in any manner.

  • Page 26: Parts Diagram

    BODY BOLT & SPACER SLEEVE J/JP-15 SHACKLE PIN JPA-3 SWIVEL JAW PIN & SPRING KIT JPA-11 LOCK ASSEMBLY J/JP-12 CAM PIN JPA-6 LOCK SPRING JPA-7 SWIVEL JAW PIN JPA-9 SWIVEL JAW CAM ASSEMBLY JPA-5 HOUSING JPA-10 SWIVEL JAW JPA-8 Caldwell Quality. Guaranteed.
  • Page 27 Parts Diagram LIFTING SHACKLE J/JA-1 MODEL JA EXPLODED VIEW BODY BOLT & SPACER SLEEVE JPA-16 SHACKLE PIN JPA-3 AUX LOCK HOUSING & SLEEVE JA/JPA-14 LOCK ASSEMBLY JA/JPA-13 CAM PIN JPA-6 SWIVEL JAW PIN & SPRING KIT JPA-11 SWIVEL JAW PIN JPA-9 SWIVEL JAW HOUSING JPA-10 SWIVEL JAW JPA-8...
  • Page 28 800.628.4263 815.229.5667 contact@caldwellinc.com caldwellinc.com Ask us about in-stock RENFROE clamps! Large selection, ready to ship. OM-0820-J-SERIES • 033125-2000...

This manual is also suitable for:

Renfroe jpRenfroe jaRenfroe jpa

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