Martin Sprocket & Gear, Inc. Conveyor Division 3600 McCart Street • Fort Worth, TX 76101-1038 817-258-3000 • (FAX) 817-258-3173 www.martinsprocket.
CEMA Document: SC 2004-01 WARNING AND SAFETY REMINDERS FOR SCREW , DRAG , AND BUCKET ELEVATOR CONVEYORS APPROVED FOR DISTRIBUTION BY THE SCREW CONVEYOR SECTION OF THE CONVEYOR EQUIPMENT MANUFACTURERS ASSOCIATION (CEMA) It is the responsibility of the contractor, installer, owner and user to install, maintain and operate the conveyor, components and, conveyor assemblies in such a manner as to comply with the Williams-Steiger Occupational Safety and Health Act and with all state and local laws and ordinances
CEMA Document: SC 2004-01 CEMA Safety Labels The CEMA safety labels shown below should be used on screw conveyors, drag conveyors, and bucket elevators. Safety labels should be placed on inlets, discharges, troughs, covers, inspection doors & drive guards. See CEMA Safety Label Placement Guidelines on CEMA Web Site: http://www.cemanet.org/safety/guidelines.
Placement Guidelines CEMA Safety Labels Product: Screw Conveyors Equipment: Bucket Conveyor Exposed moving parts can cause severe injury LOCK OUT POWER before removing CHS930001 guard “A” To be placed on removable guards to warn that operation of the machinery with guards removed would expose chains, belts, gears, shafts, pulleys, couplings, etc. which create hazards USE LABEL “A” ON BELT GUARD USE LABEL “B” ON EACH SIDE OF INTAKE, ALL BOLTED PANELS AND INSPECTION DOORS, AND BOTH SIDES OF SPLIT HOOD.
THESE CEMA SAFETY LABELS CAN HELP MAKE YOUR CONVEYING EQUIPMENT OPERATIONS SAFER Exposed moving parts can cause severe injury CHR930001 Exposed screw and moving parts can cause severe injury Do not enter Hazardous Area LOCK OUT POWER before removing guard Authorized personnel only CHR930006 CHR930011 LOCK OUT POWER before removing cover or servicing KEEP AWAY CHS950017 CHR930011 (5"Wide x 2 1/2" High) CHR930006 (5"Wide x 2 1/2" High) CHR930001 CHS930001 (5"Wide x 2 1/2" High) Moving parts will c
Installation 1. Boot Assembly 2. Inlet Spout 17 9 3. Removable Sprocket/Pulley Access Door 10 18 WARNING 4. Curved Boot Plate 5. Intermediate Section.
Installation CASING (All Elevators) A. Insure that anchor bolts are securely placed and conform to the pattern of the boot section mounting holes. B. Set boot in place insuring that boot section top flange is level and casing is plumb. This is accomplished by shimming under the bottom flange. Use shims only next to anchor bolts—not elsewhere along flange. Any gap resulting from shimming is generally sealed with a strong structural grout. C. It is essential that the boot be set accurately. D.
Installation MC. Adjust take-up accordingly to provide 1/8” to 1/4” gap between the chain barrel and root of boot sprocket tooth. This gap should occur at 6 o’clock on the boot sprocket. The gap is to accommodate chordal action of the chain. On long pitch chain this gap can be increased accordingly. Adjust bibb to provide up to 3/4” to 1” clearance to buckets. NC. At this point you may find it desirable to “run in” the chain for a period of several hours. OC.
Installation JB. Move boot take-up to its uppermost position (head end take-up to lowest position.) Make these adjustments uniformly to both sides at the same time. Many bearings will not accommodate much misalignment. Severe damage to internal bearing parts and seals can occur if this procedure is not followed. KB. It is recommended, especially in cool environments, that the belt be draped over the head pulley and allowed to hang for at least 24 hours.
Installation NB. Remove belt clamps and adjust take-ups uniformly to both sides to remove any slack in the belt. Use caution to avoid over tightening the belt as this can cause premature failure of: Belting, shafts, bearings, etc. At this point it is advisable to “run in” the belt for a period of several hours to observe belt tracking and any further initial stretch. The responsibility to do the splice correctly lies with the installer. OB. Install buckets using bolts, nuts and lock washers provided.
Bucket Safety 2/9/07 3:26 PM Page 7 Installation 3. Backstop / Torque Arms Removal of backstops or torque arms may cause unexpected machine movement. Remove or block all external loads before servicing the unit. Failure to observe these precautions could result in bodily injury. Bolt motor in place and install driver and driven sheaves. Check for alignment. Attach turnbuckle and turnbuckle mounting bracket. Install V-belts, tighten turnbuckle and lock in place with lock nuts. Add oil to reducer.
Operation START UP (All Types) Check to insure elevator is free of foreign materials before connecting power. Check to insure all guards, covers, safety devices and controls are in place and operating correctly. Initial start up of elevator should commence with several short jogs gradually lengthening in duration without material. Check take-up adjustment after 8 hours.Retighten all fasteners. Check and realign sprockets/pulleys as necessary. Gradually begin feeding material to the elevator.
Maintenance Periodic inspections must be performed to determine the wear rate of all chains, buckets, belts and bearings. During these inspections the alignment of sprockets, pulleys and all drive components shall be checked. Retightening of fasteners and checks to insure guards, covers, gratings, controls, and safety devices are in place, secure, and operating correctly. Keep a good supply of spare parts.
Operation PROBLEM POSSIBLE CAUSE Elevator Vibrates 1. Foreign matter in boot 2. Excessively tight chain/belt 3. Excessively loose chain/belt 4. Loose or broken buckets 5. Buckets hitting bibb plate 6. Misaligned elevator head and boot shaft 7. Elevator is not adequately braced. See para. F., installation 8. Chain/belt hitting inside of casing when casing is not plumb Elevator Will Not Start 1. Obstruction in boot 2. Electrical problem 3. Backstop incorrectly installed 4.
Vendor Contact Please use the following list of contacts concerning maintenance or troubleshooting questions associated with components not manufactured by Martin, but supplied on your conveyor equipment. GEAR REDUCERS SUPPLIER PHONE NUMBER ALTERNATE CONTACT DODGE 803-297-4800 Fax: 864-281-2381 FALK 414-342-3131 Fax:414-937-4359 NORD 608-849-7300 www.nord.com SUMITOMO 757-485-3355 Fax: 757-485-3075 DORRIS 800-325-2520 Intbtedorrisco.
Recommended Spares The list of components provided below is our recommendation for spares required for general maintenance. Please use the enclosed bill of materials from the drawings or planning sheets to identify components specific to your equipment. Quantities should be equal to the previous amount given unless specified otherwise. BUCKET ELEVATOR Bearings V-belts Buckets Chain/Belt Bolts Please call Martin if you need additional information or help in determining your required spares.
Bolt Torque General Bolt Tightening Torque Thread Size Tensile Stress Area SAE Grade 2 SAE Grade 5 75% Yield Strength (PSI) - 43000 Plain Zinc Plated Square Inches Ft.Lb. Ft.Lb. SAE Grade 8 75% Yield Strength (PSI) - 69000 75% Yield Strength (PSI) = 98000 Plain Zinc Plated Plain Zinc Plated Ft.Lb. Ft.Lb. Ft.Lb. Ft.Lb. Tsa 1/4-20. 0.0318 6 6 9 10 13 14 1/4-28. 0.0364 7 7 10 12 15 16 5/16-18. 0.0524 12 13 19 21 27 29 5/16-24. 0.0580 13 14 21 23 30 33 3/8-16. 0.
Our Headquarters operation in Arlington, Texas serves as backup inventory for our Service Centers throughout North America. USA General Offices Sales and Manufacturing Arlington, TX 3100 Sprocket Drive 76015-2898 P.O. Box 91588 Arlington, Texas 76015-0088 817-258-3000 (FAX 817-258-3333) Sales and Manufacturing Danielsville, PA 3376 Delps Road 18038 P.O.
