MARTIN XHD Tensioners

Transcription

1 MARTIN XHD Tensioners Go to MARTIN XHD Tensioners web page Operator s Manual M3512

2 Important MARTIN ENGINEERING HEREBY DISCLAIMS ANY LIABILITY FOR: DAMAGE DUE TO CONTAMINATION OF THE MATERIAL; USER S FAILURE TO INSPECT, MAINTAIN AND TAKE REASONABLE CARE OF THE EQUIPMENT; INJURIES OR DAMAGE RESULTING FROM USE OR APPLICATION OF THIS PRODUCT CONTRARY TO INSTRUCTIONS AND SPECIFICATIONS CONTAINED HEREIN. MARTIN ENGINEERING S LIABILITY SHALL BE LIMITED TO REPAIR OR REPLACEMENT OF EQUIPMENT SHOWN TO BE DEFECTIVE. Observe all safety rules given herein along with owner and Government standards and regulations. Know and understand lockout/tagout procedures as defined by American National Standards Institute (ANSI) z , American National Standard for Personnel Protection - Lockout/Tagout of Energy Sources - Minimum Safety Requirements and Occupational Safety and Health Administration (OSHA) Federal Register, Part IV, 29 CFR Part 1910, Control of Hazardous Energy Source (Lockout/Tagout); Final Rule. The following symbols may be used in this manual: DANGER! Danger: Immediate hazards that will result in severe personal injury or death.! WARNING Warning: Hazards or unsafe practices that could result in personal injury.! CAUTION Caution: Hazards or unsafe practices that could result in product or property damages. IMPORTANT Important: Instructions that must be followed to ensure proper installation/operation of equipment. NOTE Note: General statements to assist the reader.

3 Section Table of Contents List of Figures and Tables ii Introduction General Installations without chutework References Materials required Safety Before Installing Tensioner Installing Tensioner Installing mounting plates Installing belt cleaner Installing MARTIN XHD Spring Tensioner Assembly Tensioning belt cleaner Installing MARTIN XHD Air Tensioner Assembly After Installing Belt Cleaner and Tensioner Weekly Maintenance Troubleshooting Part Numbers Page Table of Contents Martin Engineering M /10 i MARTIN XHD Tensioners

4 List of Figures/Tables List of Figures Figure Title Page 1 Air Tensioner Installation Air Tensioner Mounting Dimensions Air Cylinder Schematic (dual tensioners) MARTIN XHD Spring Tensioner Assembly, P/N Dual MARTIN XHD Spring Tensioner Assembly, P/N MARTIN XHD Air Tensioner, P/N Dual MARTIN XHD Air Tensioner P/N R Pinch Point Warning Label, P/N Conveyor Products Warning Label, P/N MARTIN XHD Spring Tensioner Label (Pre-Cleaner), P/N P MARTIN XHD Spring Tensioner Label (Dual Pre-Cleaner), P/N P MARTIN XHD Air Tensioner Pressure Label, P/N List of Tables Table Title Page I Recommended Pressure for Air Tensioner Martin Engineering M /10 ii MARTIN XHD Tensioners

5 Introduction General To introduce product back into the product flow, a Pre-Cleaner is installed on the face of the head pulley. On a dual cleaner system, the Secondary Cleaner is installed immediately following the Pre-Cleaner to remove stubborn material left on the conveyor belt. If a Pre-Cleaner cannot be used because of space limitations, the Secondary Cleaner is installed alone. If the materialhandling process or product could be affected by contamination from the use of these belt cleaners, the user is responsible for taking the necessary steps to prevent contamination. Consult Martin Engineering or a representative for alternate belt cleaners or belt cleaner locations to use where contamination may be an issue. Introduction Installations without chutework These procedures were written for equipment that is being installed on enclosed pulley chutework. If the pulley is not enclosed, the equipment should be installed using the best available field resources and methods to ensure that the critical dimensions are followed for proper installation. Belt cleaner inspection access References If the belt cleaner is installed on enclosed pulley chutework, a MARTIN Inspection Door should be installed. MARTIN Inspection Doors are available from Martin Engineering or a representative. See Part Numbers for a list of MARTIN Inspection Doors and part numbers. The following documents are referenced in this manual: American National Standards Institute (ANSI) z , American National Standard for Personnel Protection - Lockout/Tagout of Energy Sources - Minimum Safety Requirements, American National Standards Institute Inc., 1430 Broadway, New York, NY Federal Register, Volume 54, Number 169, Part IV, 29 CFR Part 1910, Control of Hazardous Energy Source (Lockout/Tagout); Final Rule, Department of Labor, Occupational Safety and Health Administration (OSHA), 32nd Floor, Room 3244, 230 South Dearborn Street, Chicago, IL Martin Engineering M /10 1 MARTIN XHD Tensioners

6 Introduction Safety All safety rules defined in the above documents and all owner/employer safety rules must be strictly followed when working on the belt cleaner.! DANGER Do not touch or go near the conveyor belt or conveyor accessories when the belt is running. Your body or clothing can get caught and you can be pulled into the conveyor, resulting in severe injury or death.! DANGER Before installing, servicing, or adjusting the belt cleaner, turn off and lock out/tag out all energy sources to the conveyor and conveyor accessories according to ANSI standards. Failure to do so could result in serious injury or death.! DANGER If this equipment will be installed in an enclosed area, test the gas level or dust content before using a cutting torch or welding. Using a torch or welding in an area with gas or dust may cause an explosion resulting in serious injury or death.! WARNING Before using a cutting torch or welding the chute wall, cover the conveyor belt with a fire retardant cover. Failure to do so can allow the belt to catch fire. WARNING! Remove all tools from the installation area and conveyor belt before turning on the conveyor. Failure to do so can cause serious injury to personnel or damage to the belt and conveyor. WARNING! Mainframe with blade can be heavy and may require two people to lift. Attempting to lift the belt cleaner without assistance could result in injury. Martin Engineering M /10 2 MARTIN XHD Tensioners

7 Before Installing Tensioner IMPORTANT The delivery service is responsible for damage occurring in transit. Martin Engineering CANNOT enter claims for damages. Contact your transportation agent for more information. 1. Inspect shipping container for damage. Report damage to delivery service immediately and fill out delivery service s claim form. Keep any damaged goods subject to examination. 2. Remove tensioner assembly from shipping container. 3. If anything is missing contact Martin Engineering or a representative. Before Installation WARNING! Before installing equipment, turn off and lock out/ tag out all energy sources to the conveyor and conveyor accessories according to ANSI standards. Failure to do so could result in serious injury or death. 4. Turn off and lock out/tag out energy source according to ANSI standards (see References ).! DANGER If this equipment will be installed in an enclosed area, test the gas level or dust content before using a cutting torch or welding. Using a torch or welding in an area with gas or dust may cause an explosion resulting in serious injury or death. 5. If using a cutting torch or welding, test atmosphere for gas level or dust content. Cover conveyor belt with fire retardant cover. IMPORTANT Center the belt cleaner blades to clean an area narrower than the conveyor belt width. This allows for side-to-side movement of the belt and prevents damage to the belt edge. NOTE The chute wall that the tensioner will be located on is referred to as the operator side. The other side of the chute is referred to as the far side. (If installing dual tensioners, side that is most accessible is operator side. ) 6. Determine which side of chute is easiest to access. Locate the tensioner on the most accessible chute wall. Martin Engineering M /10 3 MARTIN XHD Tensioners

8 Installation Installing Tensioner Installing mounting plates 1 Martin Engineering M /10 4 MARTIN XHD Tensioners

9 2 Installation NOTE Tensioner may be bolted or welded to chute wall. Martin Engineering recommends bolting for ease of maintenance and accessibility. 3 Operator side (Spring Tensioner) Operator side (Air Tensioner) Inside chute Martin Engineering M /10 5 MARTIN XHD Tensioners

10 Installation 4 Inside chute 5 For dual tensioners, repeat steps 3 and 4 on far side as shown. For single tensioner, install far side mount plate. Martin Engineering M /10 6 MARTIN XHD Tensioners

11 Installing belt cleaner NOTE Locate cleaner according to belt cleaner operator s manual (see References ). 1 Installation Martin Engineering M /10 7 MARTIN XHD Tensioners

12 Installation 2 3 Far side and operator side Martin Engineering M /10 8 MARTIN XHD Tensioners

13 4 A A Installation A = A 5 A A A = A Martin Engineering M /10 9 MARTIN XHD Tensioners

14 Installation Installing MARTIN XHD Spring Tensioner Assembly 1 Determine the direction to install the lever arm on the tensioner depending on the belt direction, as shown below. Then install the lever arm assembly as required for your application. XHD Pre-Cleaner Left side operation XHD Pre-Cleaner Right side operation 2 Disassemble MARTIN XHD Spring Tensioner. Martin Engineering M /10 10 MARTIN XHD Tensioners

15 NOTE This procedure shows installation for left side operation. 3 Installation 4 Martin Engineering M /10 11 MARTIN XHD Tensioners

16 Installation 4 (cont) Martin Engineering M /10 12 MARTIN XHD Tensioners

17 5 A Installation A = A A Martin Engineering M /10 13 MARTIN XHD Tensioners

18 Installation 6 For dual tensioners, repeat steps 3 through 5 on far side. For single tensioner: Far side Martin Engineering M /10 14 MARTIN XHD Tensioners

19 Tensioning belt cleaner 1 Installation IMPORTANT Do at the same time. 2 Martin Engineering M /10 15 MARTIN XHD Tensioners

20 Installation 3 Set screw, then nut 4 5 Lock together. 6 For dual tensioners, repeat steps 1 through 6 on far side. Martin Engineering M /10 16 MARTIN XHD Tensioners

21 7 Installation Martin Engineering M /10 17 MARTIN XHD Tensioners

22 Installation Installing MARTIN XHD Air Tensioner Assembly 1. Slide force arm weldment (C) onto operator side mainframe end weldment (D). Tighten set screws (A) to secure onto mainframe end weldment. 2. Slide force arm weldment tight against shock bushing (B) to retract end weldment. Tighten square head set screws on telescoping mainframe weldment. 3. Remove cotter pin (F) and clevis pin (G) from force arm. 4. Place air cylinder (H) on force arm and secure with clevis pin (G) and cotter pin (F). 5. Place mount bracket (E) on air cylinder and secure with clevis pin (K) and cotter pin (J). A E J K B D C H F G Figure 1. Air Tensioner Installation Martin Engineering M /10 18 MARTIN XHD Tensioners

23 M H L Installation 6.00 (152) C (364) 1.00 (25) min (127) max. Figure 2. Air Tensioner Mounting Dimensions 6. Make sure the distance between the mainframe vertical center line and the force arm clevis pin vertical center line is between 1 and 5 in. (25 and 127 mm) as shown in Figure Push force arm (C) toward air cylinder (H) until sewn rod boot (L) retracts and the distance between the clevis pins on the cylinder measures 15-1/8 in. (364 mm). 8. Mark location of cylinder mount bracket holes on chute wall. 9. Remove clevis pin (K) and cotter pin (J). Remove mount bracket. NOTE For easier maintenance, Martin Engineering recommends bolting rather than welding mount bracket to chute wall. 10. Bolt or weld cylinder mount bracket to chute wall as follows: a. If bolting mount bracket to chute wall, do the following: (1) Drill or cut four 9/16-in. holes in operator side chute wall. Remove burrs and sharp edges. (2) Install mount bracket on chute wall with four hex head cap screws, flat washers, compression washers, and hex nuts (M). b. If welding mount bracket to chute wall, do the following: (1) Position mount bracket on chute wall so that four mounting holes line up with four holes marked on chute wall. (2) Weld mount bracket onto chute wall. Skip weld around entire mount bracket surface contacting chute wall. 11. Install air cylinder onto mount bracket and secure with clevis pin and cotter pin. Martin Engineering M /10 19 MARTIN XHD Tensioners

24 Installation B A C D E 1 4 F G 3 2 A. B. C. D. 1/2-in. NPTL air line Filtered plant air (100 psi [7 bar] min.) Lockout valve Check valve E. F. G. Pressure regulator 3-way valve Air cylinders Ports 1-4 Figure 3. Air Cylinder Schematic (dual tensioners)! CAUTION Do not use nitrogen in air tensioner. Nitrogen can dry out rubber seals and damage tensioner. Use only filtered air. 12. Install air line to air tensioner as shown in Figure 3. IMPORTANT If dual air tensioners are used, make sure you install air line into same port location on far side cylinder as on operator side cylinder. a. Install air line from port 1 on 3-way valve into one of two ports on air cylinder (G). If dual air tensioners are used, run air line through mainframe to far side air cylinder. b. Install air line from port 2 on 3-way valve into unused port on air cylinder. If dual air tensioners are used, run air line through mainframe to far side air cylinder.! CAUTION Do not apply pressures greater than those recommended in Table I. Higher pressures can damage conveyor belt or cleaner, and blades will wear faster. 13. Apply air pressure to air tensioner(s) according to Table I. Martin Engineering M /10 20 MARTIN XHD Tensioners

25 Table I. Recommended Pressure for Air Tensioner Belt Width In. (mm) Pre-Cleaner Air Pressure psi (bar) Secondary Cleaner 18 ( ) 18 (1.24) 25 (1.72) 24 ( ) 19 (1.31) 25 (1.72) 30 ( ) 26 (1.79) 37 (2.55) 36 ( ) 32 (2.21) 50 (3.45) 42 ( ) 38 (2.62) 62 (4.27) 48 ( ) 31 (2.14)* 31 (2.14)* 54 ( ) 31 (2.14)* 38 (2.62)* 60 ( ) 40 (2.76)* 44 (3.03)* 66 ( ) 40 (2.76)* 44 (3.03)* 72 ( ) 45 (3.10)* 50 (3.45)* 84 ( ) 53 (3.65)* 62 (4.27)* 96 ( ) 62 (4.27)* 68 (4.69)* 102 ( (4.62)* 74 (5.10)* 108 ( ) 71 (4.90)* 81 (5.58)* 120 ( ) 76 (5.24)* 87 (6.00)* * Per Tensioner. Dual Tensioners required. Installation Martin Engineering M /10 21 MARTIN XHD Tensioners

26 After Installation After Installing Belt Cleaner and Tensioner 1. Thoroughly wipe chute wall clean above tensioner. 2. Place Conveyor Products Warning Label (P/N 23395) on outside chute wall visible to belt cleaner operator. WARNING! Failure to remove tools from installation area and conveyor belt before turning on energy source can cause serious injury to personnel and damage to belt.! DANGER Do not touch or go near conveyor belt or conveyor accessories when conveyor belt is running. Body or clothing can get caught and pull body into conveyor belt, causing severe injury or death. 3. Turn on conveyor belt for 1 hour, then turn off. DANGER! Before installing, servicing, or adjusting the belt cleaner/ tensioner, turn off and lock out/tag out all energy sources to the conveyor and conveyor accessories according to ANSI standards. Failure to do so could result in serious injury or death. 4. Make sure all fasteners are tight. Tighten if necessary. 5. Make sure cleaner is not changing belt line. If it is, install belt support ahead of blade-to-belt contact point (Secondary Cleaner). 6. Inspect belt cleaner for the following: Wear. (A small amount of break-in wear may be found. This will stop once blades wear to conveyor belt contour.) Material buildup. (No material between blades and return side of conveyor belt should be found.) 7. If wear, material buildup, or some other problem exists, see Troubleshooting. Martin Engineering M /10 22 MARTIN XHD Tensioners

27 Weekly Maintenance IMPORTANT Read entire section before beginning work. NOTE Maintenance inspection should be performed no less than weekly. Some applications may require more frequent maintenance inspections. Maintenance! DANGER Before installing, servicing, or adjusting the belt cleaner/ tensioner, turn off and lock out/tag out all energy sources to the conveyor and conveyor accessories according to ANSI standards. Failure to do so could result in serious injury or death. 1. Remove any material from belt cleaner. 2. Make sure all fasteners are tight. Tighten if necessary. 3. Check tension on cleaner. Re-tension if necessary. 4. Wipe all labels clean. If labels are not readable, contact Martin Engineering or a representative for replacements. 5. Check blades for excessive wear. Replace if necessary. 6. Remove equipment from service if there is any indication it is not functioning properly. Call Martin Engineering or a representative for assistance. Do NOT return equipment to operation until the cause of the problem has been identified and corrected. WARNING! Failure to remove tools from installation area and conveyor belt before turning on energy source can cause serious injury to personnel and damage to belt. 7. Remove all tools from maintenance area. DANGER! Do not touch or go near conveyor belt or conveyor accessories when conveyor belt is running. Body or clothing can get caught and pull body into conveyor belt, causing severe injury or death. 8. Start conveyor belt. Martin Engineering M /10 23 MARTIN XHD Tensioners

28 Troubleshooting Troubleshooting Symptom Insufficient cleaning and carryback. Noise or vibration. High blade wear rate. Unusual wear or damage to blades. Bent or broken mainframe or support frame due to blade slipping through. Corrosion or chemical degradation. Corrective Action Tension of cleaner on belt is set too low or too high. Increase or decrease tensioner setting. Blades are worn. Check blades and replace if necessary. Tension is not sufficient or is set too high. Correct tension as necessary. If this does not correct problem, blade urethane may not match application. Contact Martin Engineering or representative. Tension of cleaner on belt is set too high. Reduce tensioner setting. Check belt splice(s) and repair as necessary. If blades are worn to or past the wear line, replace blades. If blades are not worn, check mainframe location. Blade urethane may not match application. Contact Martin Engineering or representative. NOTE Conveyor equipment such as conveyor belt cleaners are subject to a wide variety of bulk materials characteristics and often have to perform under extreme operating or environmental conditions. It is not possible to predict all circumstances that may require troubleshooting. Contact Martin Engineering or a representative if you are experiencing problems other than those listed in the Troubleshooting chart above. Do not return the equipment to operation until the problem has been identified and corrected. Installation checklist If after taking the corrective actions suggested under Troubleshooting you are still experiencing problems, check for the following: Installation Checklist Pre-Cleaner mainframe is proper distance from belt surface on both ends of mainframe. Pre-Cleaner blade tip is at or below horizontal center line of pulley and does not lie in path of material flow. Secondary Cleaner blade tip is 1 in. (25 mm) past vertical center line of pulley. Secondary Cleaner is not changing belt line. Blades are centered on belt. Martin Engineering M /10 24 MARTIN XHD Tensioners

29 Part Numbers MARTIN XHD Spring Tensioners This section provides product names and corresponding part numbers for MARTIN XHD Spring and Air Tensioner assemblies and related equipment. Please reference part numbers when ordering parts: MARTIN XHD Spring Tensioner Assembly: P/N See Figure 4. Dual MARTIN XHD Spring Tensioner Assembly: P/N See Figure 5. Part Numbers MARTIN XHD Air Tensioners MARTIN XHD Air Tensioner Assembly: P/N See Figure 6. Dual MARTIN XHD Air Tensioner Assembly: P/N R. See Figure 7. Mounts and brackets MARTIN XHD Flange Hanger Mount Assembly: P/N SL. Martin Engineering M /10 25 MARTIN XHD Tensioners

30 Part Numbers Chute Wall Figure 4. MARTIN XHD Spring Tensioner Assembly, P/N Martin Engineering M /10 26 MARTIN XHD Tensioners

31 Item Description Part No. Qty 1 Mount Plate Weldment Shock Ring Nylon Bushing Lever Arm Weldment Rod Weldment with SS Rod Tensioning Gauge Bushing Spring Cover Mount Spring Die 2.00 x Washer Flat 1 Regular ZP Nut Hex 1-5 Acme ZP Washer Flat 1-1/4 Narrow ZP Hairpin Cotter 0.18 x 3.56 ZP Mounting Hardware Kit XHD Farside Mount Weldment Locking Collar Screw SHS 1/2-13 NC x Label Pinch Point Warning (NS) Tube Clear (NS) Clamp Hose 2.06 Min. x 3.00 Max (NS) Cap Tube (NS) Spring Cover (NS) Label Martin Products Fig. 9 Label Conveyor Products Warning Fig. 10 Label XHD Spring Tension Pre-Cleaner P1 1 NS Manual Operator s M Part Numbers NS = Not Shown Martin Engineering M /10 27 MARTIN XHD Tensioners

32 Part Numbers Chute Wall Figure 5. Dual MARTIN XHD Spring Tensioner Assembly, P/N Item Description Part No. Qty 1 Mount Plate Weldment Shock Ring Nylon Bushing Lever Arm Weldment Rod Weldment with SS Rod Tensioning Gauge Bushing Spring Cover Mount Spring Die 2.00 x Washer Flat 1 Regular ZP Nut Hex 1-5 Acme ZP Washer Flat 1-1/4 Narrow ZP Hairpin Cotter 0.18 x 3.56 ZP Mounting Hardware Kit Screw SHS 1/2-13 NC x Label Martin Products (NS) Tube Clear (NS) Clamp Hose 2.06 Min. x 3.00 Max (NS) Cap Tube (NS) Spring Cover Fig. 8 Label Pinch Point Warning Fig. 9 Label Conveyor Products Warning Fig. 11 Label XHD Spring Tension Pre-Cleaner P2 2 NS Manual Operator s M NS = Not Shown Martin Engineering M /10 28 MARTIN XHD Tensioners

33 Part Numbers Figure 6. MARTIN XHD Air Tensioner, P/N Item Description Part no. Qty 1 Mount bracket weldment Screw HHC 1/2-13NC x Washer flat 1/ Washer compression 1/ Nut hex 1/2-13NC Cylinder air 3.25 bore x 5.00 stroke Boot sewn rod Clevis piston rod Clamp worm drive Mount plate weldment Bushing nylon Bushing shock Screw square head set 1/2-13NC x Force arm weldment Hub locking (NS) Label MARTIN Products (NS) Operator s Manual M Fig. 9 Conveyor Products Warning Label Fig. 14 XHD Air Tensioner Pressure Label NS = Not Shown Martin Engineering M /10 29 MARTIN XHD Tensioners

34 Part Numbers Figure 7. Dual MARTIN XHD Air Tensioner, P/N R Item Description Part no. Qty 1 Bracket weldment mount Cylinder air 3.25 bore x 5.00 stroke Clamp worm drive Boot sewn rod Plate mount weldment Bushing shock Screw SHS 1/2-13NC x 1 SS Clevis rod piston Arm force weldment Bushing Nylon Screw HHC 1/2-13 NC x Washer flat 1/ Nut hex 1/2-1/3 NC Washer compression 1/ (NS) Label MARTIN Products (NS) Manual Operator s M Fig. 9 Conveyor Products Warning Label Fig. 14 XHD Air Tensioner Pressure Label NS = Not Shown Martin Engineering M /10 30 MARTIN XHD Tensioners

35 !! ADVERTENCIA! WARNING Part Numbers Pinch point! Usted se puede pellizcar! Label P/N Figure 8. Pinch Point Warning Label, P/N 30528! ADVERTENCIA! WARNING Lock out and/or tag out all energy sources to conveyor system and loading system before performing any work on conveyor or conveyor accessories. Failure to do so could result in severe injury or death. Cierre y/o rotule todas las fuentes de energía al sistema transportador y al sistema de carga antes de realizar cualquier trabajo en el transportador o sus accesorios. El no hacerlo puede resultar en heridas serias o muerte. Label P/N Figure 9. Conveyor Products Warning Label, P/N Martin Engineering M /10 31 MARTIN XHD Tensioners

36 Part Numbers Tensioning Gauge For Pre-Cleaner Start with blades touching belt, then turn nuts and compress spring on rod until bottom of washer is aligned with your belt width (inches) or Label P/N P1 Figure 10. MARTIN XHD Spring Tensioner Label (Pre-Cleaner), P/N P1 Tensioning Gauge For Dual Pre-Cleaner Start with blades touching belt, then turn nuts and compress spring on rod until bottom of washer is aligned with your belt width (inches) Label P/N P or Figure 11. MARTIN XHD Spring Tensioner Label (Dual Pre-Cleaner), P/N P2 Martin Engineering M /10 32 MARTIN XHD Tensioners

37 Recommended Pressure for Air Tensioner Belt Width In. (mm) Pre-Cleaner Air Pressure psi (bar) Secondary Cleaner 18 ( ) 18 (1.24) 25 (1.72) 24 ( ) 19 (1.31) 25 (1.72) 30 ( ) 26 (1.79) 37 (2.55) 36 ( ) 32 (2.21) 50 (3.45) 42 ( ) 38 (2.62) 62 (4.27) 48 ( ) 31 (2.14)* 31 (2.14)* 54 ( ) 31 (2.14)* 38 (2.62)* 60 ( ) 40 (2.76)* 44 (3.03)* 66 ( ) 40 (2.76)* 44 (3.03)* 72 ( ) 45 (3.10)* 50 (3.45)* 84 ( ) 53 (3.65)* 62 (4.27)* 96 ( ) 62 (4.27)* 68 (4.69)* 102 ( (4.62)* 74 (5.10)* 108 ( ) 71 (4.90)* 81 (5.58)* 120 ( ) 76 (5.24)* 87 (6.00)* * Per Tensioner. Dual Tensioners required. Part Numbers Figure 12. MARTIN XHD Air Tensioner Pressure Label, P/N Martin Engineering M /10 33 MARTIN XHD Tensioners

38 Notes

39 Any product, process, or technology described here may be the subject of intellectual property rights reserved by Martin Engineering Company. Trademarks or service marks designated with the symbol are registered with the U.S. Patent and Trademark Office and may be proprietary in one or more countries or regions. Other trademarks and service marks belonging to Martin Engineering Company in the United States and/or other countries or regions may be designated with the TM and SM symbols. Brands, trademarks, and names of other parties, who may or may not be affiliated with, connected to, or endorsed by Martin Engineering Company, are identified wherever possible. Additional information regarding Martin Engineering Company s intellectual property can be obtained at

40 We Make Your Bulk Materials Handling Cleaner, Safer and More Productive Through Personalized Performance. Form No. M / , 2010 MARTIN ENGINEERING COMPANY. All rights reserved. One Martin Place Neponset, IL USA or FAX: