This .pdf document is bookmarked Operating Instructions and Parts Manual JSH Series Electric Chain Hoists Models JSH-275, JSH-550 Model JSH-550 shown JET 427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.jettools.com Part No.
1.0 Warranty and Service JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday. Warranty Period The general warranty lasts for the time period specified in the literature included with your product or on the official JET branded website. • JET products carry a limited warranty which varies in duration based upon the product.
2.0 Table of Contents Section Page 1.0 Warranty and Service ..................................................................................................................................... 2 2.0 Table of Contents ........................................................................................................................................... 3 3.0 Safety warnings...................................................................................................................................
3.0 Safety warnings 1. Read and understand the entire owner’s manual before attempting assembly or operation. 2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with all of these warnings may cause serious injury. 3. Replace the warning labels if they become obscured or removed. 4. This chain hoist is designed and intended for use by properly trained and experienced personnel only.
28. Use only recommended lubricant when needed. 29. Never use the chain hoist if either hook is stretched, deformed, or has a broken or missing safety latch. Always replace the safety latch and/or the hook before placing the chain hoist back into service. 30. Leave all internal maintenance to a qualified Walter Meier service center. 31. Do not operate this hoist while tired or under the influence of drugs, alcohol or any medication. 32.
4.0 Introduction This manual is provided by JET covering the safe operation and maintenance procedures for the JET Model JSH Series Electric Chain Hoists. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. This hoist has been designed and constructed to provide years of trouble free operation if used in accordance with instructions set forth in this manual.
6.0 Specifications Figure 1 Model No. JSH-275-10 JSH-275-15 JSH-275-20 JSH-550-10 JSH-550-15 JSH-550-20 Stock No. 110100 110115 110120 110110 110515 110520 Rated Capacity (Ton) 1/8 1/8 1/8 1/4 1/4 1/4 Standard Lift (ft.) 10 15 20 10 15 20 Hoisting Speed (fpm) 16 16 16 8 8 8 Motor 1/6HP, 115V, 1PH, 60Hz Rated Amps 3 3 3 3 3 3 Duty Cycle * 25% 25% 25% 25% 25% 25% Duty Cycle Rating * H3 H3 H3 H3 H3 H3 No.
.2 Grounding Instructions 7.0 Unpacking This machine must be grounded. In the event of a malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. Lift the hoist out of the carton by the top hook or the center section. Do not apply excessive force to the motor cover, as damage may result. 7.1 Contents of Shipping Container Improper connection of the equipment-grounding conductor can result in a risk of electric shock.
8.4 Installing Chain Container Your hoist is supplied with a canvas chain container (Figure 3) designed to fit the particular length of chain. If a different length chain is ever installed on this hoist, the chain container must be replaced by one of proper size. Do not overfill chain container. If chain should overfill and begin to fall, the entire chain container may empty without warning, resulting in serious personal injury or property damage. To assemble the chain container to the hoist: 1.
where links contact each other. To check the links for stretch, proceed as follows: 5. Select an unworn, un-stretched length of chain (at the slack end for example). Let the chain hang vertically with a light load (about 20 pounds) on the chain to pull it taut. 6. Use a large caliper to measure the outside length of a convenient number of links. Measure the same number of links in a used section of chain and calculate the percentage increase in length of the worn chain. 7.
If the hoist is connected to a manual trolley, move the hoist by pushing on the suspended load. Move an unloaded hoist by pulling on the empty hook. Do NOT move the hoist by pulling on the pendant cord. The brake mechanism must be kept clean and free from dirt, water, and oil. Never allow oil to penetrate the brake mechanism. Always keep your hoist clean, and store in a clean, dry location. Follow this general procedure for hoisting loads: 1. Secure the upper hook to the supporting structure. 2.
9. Lower load at destination. If both UP and DOWN commands must be used during lowering, pause for a moment between each reversal of load direction. procedures describe replacing the load chain for single and multiple fall hoists. These procedures should be performed by experienced personnel only. 11.3.1 How to Cut Chains 10. Slowly allow weight to shift from hoist to ground or new support. Do not approach load until all tension is out of chain and load is stable.
3. On the slack side of the chain, remove chain stop, and remove the spring(s). (see Figure 13). Keep these handy for later re-installing. 4. Using a C-link(s), connect the new chain to the old chain. If the end link of the old chain is horizontal, use two C-links. If the end link of the old chain is vertical, use one C-link See Figure 15. Using the correct number of C-links will properly orient the chain, and ensure that first link on load side end is a horizontal link.
12.0 Inspection and Maintenance All repairs and adjustments are to be performed by trained and experienced personnel using procedures that are approved for the hoist system being serviced. All safety-related deficiencies discovered in the inspection are to be corrected before hoist is placed back into service. Check for internal damage whenever external damage has occurred. Read and follow the ANSI Inspection and Maintenance instructions.
13.0 Troubleshooting the JSH Hoist Trouble Probable Cause Remedy Motor will not run. No incoming power, or low voltage. Rectifier damaged so that the brake won’t release. Motor damaged. Overloaded. Hoist lifts very slowly. Hoist lifts but will not lower. Hoist lowers but will not lift. Low voltage. Broken conductor in pendant cord. Up/down switch malfunctioning. Overloaded. Up/down switch malfunctioning. Brake malfunction. Hoist overloaded.
14.1.
14.1.2 Parts List for JSH Series Electric Chain Hoists Index No. Part No. Description Size Qty 1 ................ JSH275-1 .................. Capacity Label for JSH-275..................................... ...................................... 1 .................. JSH550-1 .................. Capacity Label for JSH-550..................................... ...................................... 1 .................. TS-1531012 .............. Phillips Pan Head Machine Screw ...........................
Index No. Part No. Description Size Qty 42 .............. JSH275-42 ................ Chain Container Bracket.......................................... ...................................... 1 43 .............. JSH275-43 ................ Limit Switch.............................................................. ...................................... 2 .................. JSH275-43-1 ............. Phillips Pan Head Machine Screw ........................... M3x16 ........................... 4 ..............
Complete push-button controller assemblies (include #55,56,57): .................. JSH-PBC10 ............... Push-Button Pendant Controller, 10’ Lift .......... ............................................... .................. JSH-PBC15 ............... Push-Button Pendant Controller, 15’ Lift .......... ............................................... .................. JSH-PBC20 ............... Push-Button Pendant Controller, 20’ Lift .......... ............................................... 15.
427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.
