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Original Instructions: 001059 DRAFT

Twin-Axis

Sheathing Saw: Maintenance

Dust Removal

Saw dust should be removed from the dust bin on a daily basis. Use the two

handles on the operator side of the saw to remove and empty the dust bin.

Figure 5-26: Dust Bin Location

Operator

Side

Содержание TWIN-AXIS

Страница 1: ...anual TWIN AXIS SHEATHING SAW 001059 DRAFT CAUTION MiTek recommends printing this manual in high resolution using color ink Many of the graphics may be unclear and may create an unsafe condition if this recommendation is not followed ...

Страница 2: ... Date 23 February 2021 Effectivity Frame 7 Revision Date Revised By Orig Release Date 02 22 2021 Created By A McIntire TWIN AXIS SHEATHING SAW Copyright 2021 MiTek All rights reserved Patented See Legal Notice for list of patents Manual applies to United States equipment ...

Страница 3: ...539 615 U S 5 655 399 U S 5 987 828 U S 6 666 367 U S 5 678 395 U S 5 996 303 U S 6 702 269 U S 5 702 095 U S 6 048 165 U S 6 758 022 U S 5 707 204 U S 6 112 968 U S 6 817 392 U S 5 735 087 U S 6 134 775 U S 6 834 470 U S 5 810 341 U S 6 170 688 U S 6 907 820 U S 5 819 412 U S 6 205 637 Other patents may apply U S 5 833 222 U S 6 212 849 These patents may apply to saws and infeed or outfeed equipm...

Страница 4: ...ds Act of 1938 as amended including Section 12 Rev 6 98 Corrections and Improvements To report errors or recommend improvements to this manual please complete the Document Evaluation Form in the appendices Mail or fax the form to MiTek Machinery Division 301 Fountain Lakes Industrial Drive St Charles MO 63301 Attn Engineering Manager Fax 636 328 9218 Use this page to record service bulletins and n...

Страница 5: ... Safety Symbol Definitions xx Declaration of Safety Conformity xxvii Introduction 1 Introduction to the Manual 1 Understanding the Manual 2 Additional Resources 3 Website 3 Contact Us 3 General Information 4 Introduction to the Equipment 4 Purpose of the Equipment 4 Description of the Equipment 4 Safety Compliance of the Equipment 4 Main Components 5 Graphical Overview 5 Main Component Description...

Страница 6: ...icating 25 Motors and Gearboxes 26 Saw Blades 28 Direction of Blade Teeth 28 Specs for New or Used Saw Blades 28 When to Replace the Saw Blades 28 Replacing a Saw Blade 28 Bearings 30 Carriage Bearings 30 Aligner Bearings 30 Applying Bearing Lubricant 31 Chains 31 Lubricating Chains 31 Adjusting Chain Tension 32 Pneumatic System 34 Removing Pressure from the Pneumatic System 34 Maintaining the Fil...

Страница 7: ...ces to ensure the safest possible operation of this equipment However at no time is this document a substitute for common sense Personnel must ensure that the work environment is safe and free of distractions Danger Indicates an imminently hazardous situation which if not avoided is likely to result in death or serious injury Warning Indicates a potentially hazardous situation which if not avoided...

Страница 8: ...s on the following pages to safely perform maintenance and troubleshooting of this equipment Observe and obey all safety labels Replace worn labels immediately Use this equipment solely for the purpose described in this manual Only qualified personnel should attempt to operate or perform maintenance on this equipment Qualified personnel is defined as a person or persons who by possession of a reco...

Страница 9: ...for use in dusty conditions Operating and Maintaining the Equipment Ensure that all people tools and foreign objects are clear of the restricted zones before operating this equipment The restricted zones are shown on page xix Perform safety tests to ensure all E stops are working properly before operating the equipment at the initial startup after performing any maintenance and in accordance with ...

Страница 10: ...ts All protective guards and safety devices must be in place before and during use of the machine Never disconnect or bypass any safety device or electrical interlock Torque bolts and fasteners to the specifications given by MiTek If no torque specification is given use industry standards Only qualified maintenance personnel shall make adjustments or remove repair or install safety devices Only qu...

Страница 11: ...equipment manual safety labels and all safety information provided before operating or maintaining this equipment WARNING CRUSH OR CUT HAZARD Guards must always be in place during operation to avoid serious injury and possibly death Always replace guards after completing maintenance and before removing the lockout tagout device WARNING Many components are manufactured from high carbon heat treated...

Страница 12: ... re energized or operated until the lockout device is removed The photos on page xiii show where the electrical disconnects are located for this machine Energy sources include electrical mechanical hydraulic pneumatic chemical thermal or other energy In the case of electrical energy sources the main power and control power to the machinery must be turned off and physically locked in the Off positi...

Страница 13: ... to the steps here 1 Engage an E stop on the machine 2 Turn the disconnect switch handle to the Off position See Figure 1 1 Figure 1 1 Disconnect Switch in Off Position 3 Attach a lock and tag that meet OSHA requirements for lockout tagout See Figure 1 2 4 Restrain or de energize all pneumatic components hydraulic components and other parts that could have live or stored power If you are working o...

Страница 14: ...Original Instructions 001059 DRAFT xiv Twin Axis Sheathing Saw Safety Figure 1 2 Sample of a Lockout Tagout Mechanism on an Electrical Enclosure ...

Страница 15: ...ed lockout tagout procedures which should include but are not limited to the steps here 1 Engage an E stop on the machine 2 Shut the power to the machine off at the machine s power source which is usually an electrical service entry panel on the facility wall One example of a locked out power source panel is shown in Figure 1 3 3 Attach a lock and tag that meets OSHA requirements for lockout tagou...

Страница 16: ...o be near the vicinity of movable hydraulic or pneumatic components you must at a minimum physically restrain those components from moving If this is not possible lockout tagout the entire hydraulic or pneumatic system When Lockout Tagout Is Required Before attempting repair or performing maintenance on a hydraulic or pneumatic line or component lockout tagout the machine properly Follow your comp...

Страница 17: ... and machine control system work together to stop the machine properly Inspecting the Twin Axis Sheathing Saw 1 Lockout tagout the machine 2 Check the Twin Axis Sheathing Saw for debris or tools that would block the path of parts Remove any that you may find The following locations are especially important Infeed conveyor and aligner Outfeed conveyor and ejectors Saw chamber 3 Check the physical c...

Страница 18: ... cut cycle in Semi Auto mode The conveyors and the saw blades will begin to rotate 3 Actuate an E stop Verify that the following happens when the pushbutton is depressed the conveyors and the saw blades stop moving the active E stop should blink red all other illuminated E stops should turn solid red 4 Twist the E stop to release it 5 Press the blue Reset button 6 Start operation ...

Страница 19: ...ted zone must be marked so everyone near the equipment can clearly see the area where danger may exist DANGER Stay out of the restricted zone when equipment is in use Serious injury or death may result if personnel are in the restricted zone Always look for personnel in the restricted zone before operating equipment Infeed Conveyor Saw Chamber Outfeed Conveyor ...

Страница 20: ...ted Electrical hazard It indicates dangerous high voltages inside of an enclosure and or the presence of a power source To reduce the risk of fire or electric shock do not attempt to open the enclosure or gain access to areas where you are not instructed to do so Refer servicing to qualified service personnel only This equipment should be operated only from the type of source indicated on the manu...

Страница 21: ...structions 001059 DRAFT xxi Twin Axis Sheathing Saw Safety Slip hazard Use of appropriate footwear is required Trip hazard Pay attention when walking in this area Kickback hazard Keep hands clear of cutting parts ...

Страница 22: ...ngs must not be blocked or covered This equipment should not be placed in a built in installation such as a wall cutout unless proper ventilation is provided because hot temperatures result Operation of this equipment may result in flying debris and excessive noise To reduce the risk of eye injury wear only approved PPE Keep feet away from moving parts Keep hands away from moving parts High pressu...

Страница 23: ...xxiii Twin Axis Sheathing Saw Safety Equipment has automatic restarting capability Lockout tagout on the upstream disconnect before servicing Warning Three man lift required to move this equipment safely Refer to the installation manual ...

Страница 24: ... Safety The operation of this equipment requires the use of PPE Do not operate without wearing the required protective clothing Refer to manual After installation read the user s guide carefully before operating Follow all operating and other instructions carefully ...

Страница 25: ...ockout in a de energized state Lift point In order to decrease the likelihood of damage to the equipment use only the lift points indicated in the manual To reduce the risk of equipment damage or injury to personnel maintain pressure at safe levels Use of lift equipment is mandatory Consult material safety data sheet Unplug equipment before servicing ...

Страница 26: ...iners with liquids such as coffee water soda etc on this equipment Do not operate this equipment in a wet environment Do not expose to water No lift point Do not lift this device with a hook crane assembly Equipment damage occurs Refer to the installation instructions Do not use unapproved lubricants in this equipment Do not operate without guards in place Do not discard into the municipal waste s...

Страница 27: ...laration of Safety Conformity Conforms electrically to the following NFPA 79 NEC Electrical Code Electrical enclosures carry UL 508A and the CUL for Canada Safety circuit conforms to Category 4 redundant monitoring Conforms mechanically to the following 10CFR 1910 ANSI B 11 19 ...

Страница 28: ...title page For earlier revisions contact MiTek as described on page 3 WARNING Read this manual completely before using this equipment Do not operate this equipment until you have a thorough understanding of all controls safety devices emergency stops and operating procedures outlined in this manual All hazard instructions must be read and observed Failure to do so may result in economic loss prope...

Страница 29: ...e 2 1 are used throughout the manual to communicate a specific type of information quickly Table 2 1 Navigational Aids Graphic Definition This icon is an important safety note It indicates that you must lockout tagout at the disconnect switch located on the equipment using approved methods described in OSHA CFR 1910 147 before continuing with the procedure This icon specifies that certain tools ar...

Страница 30: ...ual Service bulletins pertaining to your equipment Support safety and training information Part numbers for ordering parts Contact Us MiTek Component Automation Division Customer Service Department 301 Fountain Lakes Industrial Drive St Charles MO 63301 Parts Orders with part number Email mitekparts mii com Technical Assistance Phone 800 523 3380 Fax 636 328 9218 machinerysupport mii com Website m...

Страница 31: ...the material moves through the saw chamber A second saw blade cuts up to six cross cuts per sheathing sheet The material then moves out of the saw box and is raised off the conveyor for easy removal It can then be sent to the next step in the wall building process Safety Compliance of the Equipment Equipment shipped to a U S destination is compliant NFPA 79 NEC 2009 and applicable OSHA regulations...

Страница 32: ...Table 3 1 Main Components Name Description Infeed conveyor Feeds the material into the saw chamber Infeed aligner Holds material in places as it is fed into the saw chamber Infeed sensor Determines position of material to control conveyor movement Saw chamber Where cutting takes place Outfeed conveyor Moves the material out of the saw box Outfeed ejectors Lift cut material for easy removal Operato...

Страница 33: ... limit on cross cut dimension Accuracy 1 16 Cut capacity Up to 6 cross cuts per pass Conveyor speed 120 ft min Normal Speed 60 ft min Reduced Speed Specification Technical Data Saw blade rotation 1 rip and 1 cross cut 5 hp 3500 RPM Saw blade transport 1 rip and 1 cross cut 75 hp Conveyor 1 5 hp Specification Technical Data Air source tank min min of 60 gallons Volume 9 scfm at 90 psi Pressure Low ...

Страница 34: ...renheit 0 to 50 degrees Celsius Relative humidity 45 to 85 percent humidity Transportation and storage 13 to 158 degrees Fahrenheit 25 to 70 degrees Celsius It has been packaged to prevent damage from the effects of normal humidity vibration and shock Environment for scanners must be Free of rain fog mist sand and bright sunlight Use ONLY a NEGATIVE HOOK saw blade A positive hook will pull the she...

Страница 35: ... in this manual Read and observe all warnings Failure to do so may result in economic loss property damage and or personal injury This manual must always be available to personnel operating and maintaining this machine WARNING CRUSH AND CUT HAZARD Before turning on the machine make sure that all personnel and other machines are out of the restricted zone see Marking the Restricted Zone on page xix...

Страница 36: ...cy Using an E stop to stop the machine regularly causes excessive wear on components Controlled Stops Software In the Twin Axis software operators can select to pause a cut cycle Once a cycle has been paused the option to continue or abort becomes available See Figure 4 1 PAUSE pauses the current cycle but allows the saw blades to keep spinning to quickly re initiate CONTINUE resumes the current c...

Страница 37: ... Axis Sheathing Saw Figure 4 2 E Stops and Electrical Disconnect Switch Figure 4 3 How to Operate an E stop Pushbutton Reverse View Infeed E Stop Outfeed E Stop Disconnect Switch Non Operator E Stop Control Enclosure E Stop To activate a pushbutton push the button in The machine no longer operates To release a pushbutton twist to release ...

Страница 38: ... following requirements are met an open pushbutton may be used to unlock one of the saw chamber doors If the following requirements are not met the open pushbuttons will not work Completed cycle and an E stop is actuated Pneumatic power is shut off WARNING Always turn off power at the main power source before opening the electrical enclosure Even when the disconnect switch is turned to the Off pos...

Страница 39: ...ght To Left Configuration Shown Operator door push button is located on the side of the main electrical enclosure Operational Indicators on the Machine The blue Reset button on the control enclosure will light up if any issues are detected by the machine safety controller Figure 4 6 Reset Button Outfeed Door Non Operator Side Door Infeed Door Operator Side Door ...

Страница 40: ...n Recycle Returns the saw blades to their home positions and the remaining material automatically travels backward through the saw until it stops on the infeed conveyor to be cut again PC Power Turns the Operator Interface PC power on or off Reset Restores the safety controller and re enables main power to the system Recycle Button Reset Button Touch Screen PC Keyboard and Touchpad PC Power ...

Страница 41: ...tely 30 psi on the low pressure reg and 65 psi on the high pressure regulator see Adjusting the Pressure on the Regulators on page 34 6 Verify PC is powered 7 At the Windows startup screen enter the computer password 8 Open the Twin Axis software It is recommended that a shortcut be kept on the computer s desktop 9 Verify that E stops are deactivated and status button shows Ready see Figure 4 8 10...

Страница 42: ...cess an operating mode or other menu Status Indicator This button displays machine status ex Ready and can be selected to view a detailed overview of machine status and faults Figure 4 8 Twin Axis Home Screen Welcome Screen Overview Semi Auto Pressing the Semi Auto button takes you to the Semi Auto screen see Figure 4 11 Use Semi Auto when you are not using ShopNet software to access cut data or w...

Страница 43: ...and automatically installs the latest version of the Twin Axis Sheathing Saw software Rollback Reverts to previous software release About Displays the software version number and change log for the most recent update Machine A password must be entered to access the Machine menu Qualified maintenance personnel or MiTek customer support may access this menu as part of troubleshooting Using the Toolb...

Страница 44: ...their home positions and the remaining material automatically travels backward through the saw until it stops on the infeed conveyor to be cut again Using the Status Menu The status screen displays faults and the current status of each saw chamber door and E stop If a fault is detected the status button will display Faulted Clicking the status button will display a list of present faults Select CL...

Страница 45: ...igure 4 11 Semi Auto Main Screen Operating in Semi Auto 1 Complete the Daily Startup steps at the beginning of each shift page 14 2 Verify that there is no sheathing material inside the saw CRUSH AND CUT HAZARD Before turning on the equipment make sure that all personnel and equipment are clear WARNING Toolbar Rip Width or Cross Cut in decimal inches or Feet Inches Sixteenths Return to Welcome Scr...

Страница 46: ...e outfeed conveyor and transport it to the next stage in your process 9 If there is remaining material either Manually remove it or Select Recycle to return the material via the conveyors to infeed side for further processing Using Auto Mode Figure Figure 4 12 shows the Auto screen with example measurements included Figure 4 12 Auto Main Screen Operating in Auto 1 Complete the Daily Startup steps ...

Страница 47: ...the material once it leaves the saw chamber 10 When the ejection movement has stopped remove the cut material from the outfeed conveyor and transport it to the next stage in your process 11 If there is remaining material either Manually remove it or Select Recycle to return the material via the conveyors to infeed side for further processing 12 If there are more cuts in the current file select Nex...

Страница 48: ...enter 48 in the Rip Width field to indicate the maximum width of sheathing material In Auto no action is necessary If you miss a cut during a Next Cut sequence the cut is deleted from the saw s memory Press Get Cut File to re download date to the saw and then press Next Cut as necessary until the cut appears Additional Operating Procedures Restart After E Stop Procedure E Stop Recovery Wizard duri...

Страница 49: ...ated while outside of a cut cycle follow these instructions to restore the saw to normal operation 1 Reset the safety controller by pressing the RESET button on the control enclosure 2 Clear all faults See Using the Status Menu on page 17 3 The indicator lights on the E stops will change from red to green once the E stop has been cleared ...

Страница 50: ...y pages before operating or maintaining this equipment Do not operate this machine until you have a thorough understanding of all controls safety devices E stops and operating procedures outlined in this manual Read and observe all hazard instructions Failure to do so may result in economic loss property damage and or personal injury This manual must always be available to personnel operating and ...

Страница 51: ...ean this machine disconnect it from its power source first Do not use liquid cleaners aerosols abrasive pads scouring powders or solvents such as benzene or alcohol Use a soft cloth lightly moistened with a mild detergent solution Make sure the surface cleaned is fully dry before reconnecting power CAUTION CRUSH AND CUT HAZARD Always replace guards after completing maintenance and before removing ...

Страница 52: ...librated contact MiTek for assistance See Welcome Screen Overview on page 15 for instructions on how to find the calibration menu Lubricating Lubrication of the motors and gearboxes bearings and chains is required to keep the machine operating properly and to prevent costly replacements See the respective mechanical sections for instructions on lubrication NOTICE Never use compressed air inside of...

Страница 53: ...aintenance Motor Gearbox if present Requires Grease Requires Oil Carriage Rip Nord Gearmotor No Yes Carriage Cross cut Nord Gearmotor No Yes Conveyor Nord Gearmotor No Yes Saw Rip No No No Saw Cross cut No No No Carriage Motors Saw Motors Cross cut Carriage Rip Carriage Cross cut Saw Rip Saw Conveyor Motor Operator Side Operator Side Non Operator Side ...

Страница 54: ...See Figure 5 3 for the location of the oil level and oil drain plug The approximate amount of oil is listed in Table 5 3 This amount of oil should be enough to reach the oil level bolt shown in Figure 5 3 Table 5 3 Approximate Oil Fill Level Attribute standard ISO viscosity VG680 SYN FG PG Oil type Synthetic polyalkylene glycol Ambient temperature 4 to 176 F 20 to 80 C Manufacturer type Mobil Glyg...

Страница 55: ...diameter 3 mm kerf 70 of teeth 15 hook angle 5 face angle 15 back angle 5 top angle When to Replace the Saw Blades Depending on the type and size of sheathing material one blade may wear more quickly than the other The frequency of blade changes and of repairs also depends on the number of hours the saw is running each week Check each blade rip and cross cut weekly for signs of wear and replace ac...

Страница 56: ...rbor nut and arbor bushing Figure 5 5 Arbor Nut and Bushing 4 Remove the old saw blade and place in a safe location for re tipping or disposal 5 Place the saw blade and the arbor bushing onto the shaft Verify the blade teeth are facing the right direction see Direction of Blade Teeth on page 28 6 While holding the blade in place with the spanner wrench use the 46 mm wrench to tighten the arbor nut...

Страница 57: ...earing Lubricant for instructions on the lubrication process Carriage Bearings The locations of the grease fittings 4 total are displayed in Figure 5 6 Figure 5 6 Carriage Bearings Grease Fittings Locations Aligner Bearings The locations of the grease fittings 6 total are displayed in Figure 5 7 Figure 5 7 Aligner Bearings Grease Fittings Locations Non Operator Side Infeed End ...

Страница 58: ...g Repeat steps 1 through 4 until all bearings are greased Chains Lubricating Chains The chains should be lubricated every 2 months one shift or every month two shifts The lubricant should be a high grade non detergent petroleum base oil Anti foam anti rust and film strength improving additives are often beneficial SAE 30 grade is recommended Apply oil to the edges of the link plates of the chain n...

Страница 59: ...rendered in this image Adjusting Chain Tension Carriage Chains There are two carriage chains one for the rip carriage and one for the cross cut carriage Tighten the nut on the rod end eye bolts on each carriage chain to adjust the chain to the desired tension Figure 5 10 Carriage Chain Tensioner Mechanism Non Operator Side Socket wrench set Saw Chamber Top down ...

Страница 60: ...Figure 5 11 How to tighten conveyor chain 1 Lockout tagout machine 2 Loosen the nut on the tensioner bolt to allow the bolt to be adjusted 3 Tighten the bolt to adjust the chain to the desired tension 4 Re tighten the nut on the tensioner to ensure the bolt does not become loose during operation Figure 5 11 Conveyor Chain Tensioner Mechanism Socket wrench set Infeed End ...

Страница 61: ... the Pressure on the Regulators The pressure adjustment knob on a the regulator controls the operating pressure for a pneumatic system The Twin Axis Sheathing Saw utilizes two pressure regulators that must be set at different pressures Low Pressure Regulator operating pressure should be set at 30 psi High Pressure regulator operating pressure should be set at 65 psi Use the following procedure to ...

Страница 62: ...at must be replaced every 6 months one shift or 3 months two shifts This filter can be purchased through MiTek Use the following procedure to replace a filter element 1 Remove pressure from the lines by following the procedure in Removing Pressure from the Pneumatic System on page 34 2 Pull downward on the blue tab and twist clockwise to remove the bowl from the regulator 3 Unscrew the black plast...

Страница 63: ...hing Saw utilizes pneumatic cylinders for the infeed aligner and the outfeed ejectors Figure 5 15 Aligner Cylinder Adjustment Screws Figure 5 16 Ejector Cylinder Adjustment Screws Adjusting Cushion Valves Some cylinders have adjustable cushion valves to decelerate the load and reduce potentially destructive energy These cushion valves sometimes need fine tuning Flow Control Adjustment Screws Cushi...

Страница 64: ...t steps 4 6 until the cylinder decelerates the load without the increased cycle time that occurs with a completely closed valve or the jarring end impact that occurs with a completely open valve You may need to fine tune the cylinder by 1 8 turns when you approach ideal cushioning Failure to properly maintain and calibrated the cushion valves may shorten the lifespan of the cylinders Adjusting Flo...

Страница 65: ...ng sawdust helps prevent problems with electrical components Sensors The Twin Axis Sheathing Saw utilizes the following suite of sensors 2 Photoeye sensors 2 Blade temperature sensors 8 Proximity sensors Figure 5 17 Infeed Photoeye Sensors NOTICE Never use compressed air inside of electrical enclosures Compressed air may force contaminants into electrical connections Use a vacuum to remove dust fr...

Страница 66: ...e cleaned using a common glass plastic cleaner The window should be sprayed and wiped down with a soft cloth to prevent damage to the surface Do NOT use benzene acetone or a thinner as it will damage the surface Blade Temperature Sensor Error Each saw blade has a temperature sensor that will shut down the saw if the blade becomes overheated see If this happens inspect your saw blade and material a...

Страница 67: ...y Drive A VFD is an important part of several electrical circuits in the Twin Axis Sheathing Saw Verifying the voltage in and out of the VFD is always a good first step in the electrical troubleshooting process See Figure 5 20 for the location of each VFD located inside the main electrical enclosure Figure 5 20 VFD Location and Function If the VFD experiences a fault the error code will display on...

Страница 68: ...thing Saw Maintenance Safety Controller The safety controller is located inside of the control enclosure Figure 5 22 Safety Controller Location PLC Programmable Logic Controller The PLC is located inside of the control enclosure Figure 5 23 PLC Location ...

Страница 69: ...wise degrade See Figure 5 24 for all brush locations Figure 5 24 Roller Brush Locations How to replace a brush 1 Lockout tagout machine 2 Loosen the bolts holding the brush in the place 3 Remove the old brush and install a new brush 4 Tighten the bolts to secure the brush in place Socket wrench set Center Brush Infeed Brush Outfeed Brush Bottom Brushes Figure 5 25 Brush Bolts ...

Страница 70: ...Twin Axis Sheathing Saw Maintenance Dust Removal Saw dust should be removed from the dust bin on a daily basis Use the two handles on the operator side of the saw to remove and empty the dust bin Figure 5 26 Dust Bin Location Operator Side ...

Страница 71: ...rder to perform servicing or maintenance on that machine or equipment an affected employee becomes an authorized employee when that employee s duties include performing servicing or maintenance covered under this section auto eject a pneumatic system that raises the truss off the tables and automatically places the truss on the stand alone conveyors with the use of a transfer roller beacon a light...

Страница 72: ...lectro mechanical device that consists of an actuator mechanically linked to a set of contacts when an object comes into contact with the actuator the device operates the contacts to make or break an electrical connection lockout device a device that utilizes a positive means such as a lock either key or combination type to hold an energy isolating device in the safe position and prevent the energ...

Страница 73: ...and a transmitter bar regulator a component of the pneumatic system that connects to the main air source and regulates the air pressure allowed into the system roller the large roller inside the gantry head that innately embeds the plates into the truss solenoid an assembly used as a switch consisting of a coil and a metal core free to slide along the coil axis under the influence of the magnetic ...

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