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CHESTER HOIST Chester Electric Low Headroom Chain Hoists We offer a complete line of worm gear driven, electric, low headroom trolley hoists. These hoists are equipped with case hardened load chain and are available in models to lift and move loads from 1 to 24 tons. Choices of plain push/pull, hand-geared or motorized trolley drives are available to meet a variety of applications. • Manufactured in the U.S.A. • 5 and 6 pocket load wheels – chain saver feature • Durable self-locking worm drive transmission requiring little if any maintenance • Sturdy steel construction • Direct acting motor brake which sets automatically if power is interrupted • Two precision bearings per trolley wheel minimizes traversing effort CHESTER HOIST • LISBON, OHIO 44432 U.S.A. • PHONE (330) 424-7248 • FAX (330) 424-3126 BULLETIN ELC-100-05 2 TON 5 TON HOW TO ORDER CHESTER ELECTRIC LOW HEADROOM CHAIN HOIST When specifying a Chester Electric Low Headrom Chain Hoist, the following parameters should be considered. Determine the specific requirements and clearly state them when ordering. The following checklist will be of help: 1. Load weight to be lifted 7. Beam sizes and weight (to 2. Lift or reach required determine trolley wheel 3. Control drop required specifications) 4. Power supply available 8. Trolley type (plain, hand-geared 5. How often load must be lifted or motorized) (specify number of starts per 9. Controls (may be expressed as cycle, number of cycles per functions, such as Hoist Up- hour, on-time per hour) Down, Trolley Forward- 6. Operating environment Reverse, etc.) (moisture, corrosive fumes, ex- plosive vapors, temperature, etc.) — OPTIONS — VERSATILITY The hoist design permits adaptation to a wide variety of applications. The unit can be built to suit most beams including wide flanges and patented track. CHAIN CONTAINERS Chain containers can be provided to collect the unused portion of the hoist lifting chain when the hook is in a raised position (optional, extra cost). TROLLEY DRIVES The hoist can be furnished with plain (push/pull), hand-geared or motorized trolley drives. SPECIAL PAINT The hoist can be provided with many finishes to meet customer requirements. Machine gray enamel is standard. Epoxy coating is available at extra cost. SPECIAL CONTROL ENCLOSURES Unless otherwise specified, NEMA 12 (industrial, dust-tight and drip-tight) enclosures will be supplied. Optional enclosures are available for various non-hazardous locations, as well as certain hazardous locations. EXPLOSION-PROOF UNITS Units are available to meet customer specifications for equipment meeting Class I, Group D or Class II, Groups E, F or G criteria. Spark-resistant features are available when specified (optional, extra cost). All units are designed in accordance with Chester Hoist’s interpretation of the N.E.C. Explosion-proof components such as motor, control enclosure, limit switch, etc., carry the UL Label. CIRCUITS AND CONTROL All hoists and motorized trolleys are designed for use on 230/460 VAC, 3 phase, 60 Hz. Units for operation on 200 VAC, 575 VAC or 50 Hz systems are also available. Special-purpose hoist duty contactors are standard. NEMA-rated contactors are available at extra cost. ALL TYPES OF LIMIT SWITCHES These hoists are furnished with redundant upper and lower limit switches. Additional switches or special arrangements are available at extra cost. LOAD-LIMITING SWITCHES An electrical (current-limiting) load limiter is available on models with single speed only (optional, extra cost) TROLLEY BRAKE A trolley motor brake can be supplied at extra cost. PUSH BUTTON STATIONS Some available options include extra push buttons to provide such functions as trolley, crane and start-stop control, tandem hoist control, multiple stations. INCHING CIRCUIT An inching control allows precise settings down to a fraction of an inch each time the push button is pressed. This control is often used for accurate spotting of loads (optional, extra cost) * WARNING Overloading and improper use can result in injury. To avoid injury: • Do not exceed working load limit, load rating or capacity. • Do not use to lift people or loads over people. • Use only alloy chain and attachments for overhead lifting. • Read and follow all instructions. — 4 — LETTERS USED IN MODEL DESIGNATIONS: ELP – Plain (Push/Pull) Trolley ELG – Hand Operated Geared Trolley ELM – Motorized Trolley