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MODEL DWS

HORIZONTAL LIFTING
LOCKING CLAMP

APPLICATION

The Model DWS is a horizontal lifting clamp intended to be used in
pairs, sets of pairs, or in a tripod arrangement for transporting plate
horizontally. Refer to Illustrations A, B and C. The Model DWS in-
corporates a “Lock Closed” feature which facilitates attaching the
clamp to the member being lifted and make it an ideal horizontal lock-
ing plate clamp. Refer to definition pages for explanation of “Lock
Closed” clamp.

For identification of component parts, refer to the exploded view of the
clamp located at the end of the Maintenance Section.

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Содержание DWS

Страница 1: ...WARNING Before putting tool in service take to your immediate supervisor Application Operation and Maintenance Manual Model DWS OM 211 DWS RENFROE ...

Страница 2: ...INCORPORATED of Jacksonville Florida has been an international leader in the manufacture and marketing of Lifting Clamps for over fifty years RENFROE products are manufactured in Jacksonville Florida A worldwide network of stocking distributors pro vides a readily available source of supply and service J C RENFROE SONS IN CORPORATED Jacksonville Florida 32201 Telephone 904 356 4181 Toll Free 1 800...

Страница 3: ...ECIFICALLY AND PARTICULARLY CONTAINED HEREIN PLEASE REFER TO THAT STATEMENT FOR REPRESENTATIONS AND WARRANTIES OF PRODUCTS MANUFACTURED BY J C RENFROE SONS INC WARNING 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 im portant in determining the limitations and proper ap...

Страница 4: ......

Страница 5: ...t light loads 9 DO Use an adequate number of clamps to balance load DON T lift loads that are not balanced 10 DO Use clamps within their rated capacity DON T overload clamps 11 DO Inspect clamp before each lift follow inspection and maintenance in structions outlined in this manual and use RENFROE replacement parts to assure proper operation of the clamp 12 DON T Use clamp that has been overloaded...

Страница 6: ...tes positioned horizontally to the floor level The rigging attached to clamps is generally multi legged slings with the connecting point of the slings being approximately centered between the distance separating the clamps Refer to illustrations shown below WARN ING The capacity of all horizontal clamps is based on a sling angle of sixty degrees 60 See illustration below Sling angles less than six...

Страница 7: ...er use a clamp on a member whose thickness is less than or greater than the range of jaw opening stenciled on the clamp OPERATING TEMPERATURES Unless specified under the Application Section of the individual model the approved operating temperature of RENFROE clamps is from zero degrees Fahrenheit 18 Celsius to a maximum of 200 degrees Fahrenheit 93 degrees Celsius The minimum and maximum temperat...

Страница 8: ...CKING WEDGE is a fluted steel wedge that is driven in place with a hammer The body of the wedge is positioned in a slot in the clamp body with the fluted edges contacting the member to which the clamp is being attached Refer to Operation Section of specific models of the Locking Wedge clamps for additional details Typical Locking Wedge clamps are Model A1 B1 B2 and PB LOCKING SCREW Lock Screw clam...

Страница 9: ... form those specific duties QUALIFIED PERSON A person who by possession of a recognized degree in an applicable field or certificate of profes sional standing or who by extensive knowledge training and experience has successfully demonstrated the ability to solve problems relating to the subject mat ter at hand ...

Страница 10: ...izontally Refer to Illustrations A B and C The Model DWS in corporates a Lock Closed feature which facilitates attaching the clamp to the member being lifted and make it an ideal horizontal lock ing plate clamp Refer to definition pages for explanation of Lock Closed clamp For identification of component parts refer to the exploded view of the clamp located at the end of the Maintenance Section ...

Страница 11: ...tion on Operation and Maintenance for the approved procedures in the Operation and Maintenance of this product OPERATION Step 1 Before using any RENFROE clamp refer to the Application Section to confirm the operation to be undertaken is appropriate for the product Step 2 Select appropriate capacity and jaw opening The model designation capacity and jaw opening are stenciled on each clamp Use of sl...

Страница 12: ...IN TONS Model Sling Angles Capacity 60º 45º 30º DWS 1 2 Ton 0 5 0 35 0 25 DWS 1 1 2 Ton 1 5 1 05 0 75 DWS 3 Ton 3 0 2 1 1 5 WARNING Always use an adequate number of clamps to assure a balanced load Never use on plate or bundle of plates that are not able to support themselves without sagging or stacked without edge being even Refer to Illustration D and F ...

Страница 13: ... opening E Inspect lifting shackle and all pin holes for wear and damage F Lock spring must have a definite amount of tension when lock is moved to the Lock Closed position without material in the clamp G Remove any clamp from service in need of repair Step 4 A clamp is a component of the rigging used in lifting or transporting a member It is important to use safe and adequate rigging The lock is ...

Страница 14: ...Step 5 Move lock to Open position Refer to Illustration A Illustration A Step 6 Position clamp on member to be lifted ...

Страница 15: ... is in line with the lifting shackle WARNING Never exceed ten degree side loading Refer to Photographs C D and E Step 8 Make certain the lower jaw and gripping cam are fully in contact with the member being lifted and not partially on and off the edge of the member ...

Страница 16: ... force on gripping cam Refer to Illustration B Step 10 Commence lift WARNING The operator should position himself away from and fully clear of the member to be lifted Do not commence lift until all personnel are clear of the area of the lift Never stand under or near a member being lifted Refer to photograph G B ...

Страница 17: ...ber Step 12 Inspect clamp Remove from service if in need or repair WARNING In the event the stenciling is worn and not legible or the tag containing the model capacity or other pertinent informa tion is missing do not use clamp until it has been properly labeled Inspection Kits are available at no charge upon request from the dis tributor or RENFROE Kit contains ...

Страница 18: ... per son to visually inspect a lifting clamp that will include but not be lim ited to the following Every lift Inspection A visual inspection by the operator before and after each lift made by the clamp Check the clamp to be certain the Identification and warning tags are present and legible Do not use the clamp if the tags are missing or illegible Inspect gripping surfaces for wear and defects Gr...

Страница 19: ...es the clamp exhibits excessively worn parts or is damaged the clamp should be inspected by a qualified person who will make a de termination as to its fitness to make a lift At this time the con dition of the clamp should be noted and recorded After inspec tion by the qualified person it may be decided that a periodic inspection procedure is necessary Periodic Inspection A recorded inspection by ...

Страница 20: ...eplacement of damaged parts During a repair in which parts are replaced due to damage a record should be made of the repair At this time the clamp should be marked with the following information as per the ASME B30 20 requirements Name and address of the repairer Repairer s unit identification Clamp weight if altered Rated load if altered ASME BTH 1 Design Category if altered ASME BTH 1 Service Cl...

Страница 21: ...ation is found it may be necessary to use a magnetic particle ultrasonic or similar methods for determining damage to the clamp or components A Inspect all pin holes for wear and elongation B Inspect inside area of jaw opening for displaced metal and distortion C Inspect cam stop pin pin must be in place Refer to exploded view WARNING Replace clamps containing fractures elongated holes distorted j...

Страница 22: ...ing is attached WARNING Do not alter lock assembly Use only component parts supplied by RENFROE Replace worn or damaged parts Step 8 Lock Spring and Spring Clip DWS 4 DWS 8 A Inspect lock spring and lock spring clip for distortion Spring should have a definite amount of tension when moved to the Lock Closed position without material in the clamp Lock handle body must rest on body spacer Refer to I...

Страница 23: ...ly without binding Refer to exploded view for proper location of component parts WARNING All retaining pins and fasteners must be in place WARNING Do not weld grind or modify the clamp body or component parts in any manner In the event the stenciling is worn and not legible or the tag containing the model capacity or other pertinent information is missing do not use clamp until is has been properl...

Страница 24: ...IED WHICH EXTEND BEYOND THE DESCRIPTIONS OR STATE MENTS CONTAINED IN THE FACE OR ANY PART HEREOF J C RENFROE SONS INC P O Box 4279 1926 Spearing Streeet Jacksonville Florida 32206 Phone U S A Toll Free 800 874 8454 904 356 4181 Facsimile 904 354 7865 Internet www jcrenfroe com ...

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