Summary of Contents for SafetySpeed 3760
- Page 1 Wide Belt Sander Owner’s Manual Model 3760 Model 4375 Safety Speed Manufacturing 13943 Lincoln Street NE Ham Lake, MN 55304 Tel: 763-755-1600 Fax: 763-755-6080 www.safetyspeed.com sales@safetyspeed.com...
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Page 2: Table Of Contents
-Introduction To The Platen - - - - - - - - - - - - 25 -3760 Exploded Views and Parts - - - - - - 53-59 -37” X 60” Model Platen - - - - - - - - - - - - - - - 26... - Page 3 This page was intentionally left blank.
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Page 4: Warranty
The information in this manual covers the following models: WBS 3760 WBS 4375 The manual is provided to assist operators and service people in the proper upkeep and maintenance of Safety Speed units. This manual is published for informational purposes only and the information so provided should not be considered as all-inclusive or covering all contingencies. -
Page 5: Safety Information
Safety Do not wear loose Read And Save All Instructions DRESS PROPERLY. fitting clothing or jewelry. Wear a For Future Use protective hair covering to contain long WARNING: Always follow basic safety hair. Unprotected hair may be caught in precautions when using electrical tools. This will moving parts. -
Page 6: Proposition 65 Warning
Safety Using USE PROPER ACCESSORIES. KEEP HANDS AWAY FROM ALL CUTTING, SANDING EDGES, non-recommended accessories may be HOLDDOWNS AND MOVING TABLE hazardous. Be sure accessories are PARTS. properly installed and maintained. Do not defeat the purpose of a guard or DO NOT ABUSE THE POWER CORD. -
Page 7: Set Up
See Fig. 3. Figure 2: Place Moving Jacks Here Figure 1: Machine Dimesions Model 3760 A = 50 1/2” (1280mm) B = 63” (1600mm) C = 47” (1190mm) -
Page 8: Electrical Service Requirements
Set Up Ground Electrical Service Wire Requirements Neutral Electrical servicing of the machine must be Wire completed by an experienced, licensed electrician. Pig Tail NOTE: Refer to the exploded view and parts list Neutral in the back of the manual for a full view of the electrical components. -
Page 9: Three-Phase Electrical Service (230V)
Set Up Three-phase Electrical Service (230v) Grounding Bar CAUTION: Alway unplug the machine from its power source before performing any electrical wiring. NOTE: Refer to the exploded view and parts list in the back of the manual for a full view of the electrical components. -
Page 10: Air Service
Set Up Air Service Connect the supply air line to the 1/4” pipe fitting at the top of the machine. The machine requires 1CFM at 65-100 pounds of compressed air service. An air nipple is provided at the top of Air Nipple the machine’s frame. -
Page 11: Introduction To The Components
Introduction To The Components Introduction This chapter will describe, in detail, the individual components of the unit. It is required to review this chapter and have a good understanding of the machine components before operating your sander. The Wide Belt Sander is controlled through the Control Panel use of the miscellaneous buttons and switches on the front of the Control Panel. -
Page 12: Sanding Heads Start Control
Introduction To The Components Sanding Head Start Control The “Start” Button is a green colored button labeled “Sanding Head Start.” See Fig. 15. The Control Panel machine will not start if an emergency stop has been activated. It also will not start if there is not air pressure to the machine. -
Page 13: Emergency Stop Locations
Introduction To The Components Emergency Stop Locations There are multiple emergency stop systems in place on the machines. On the 43” x 75” belt sander there is one on the front of the table. See Fig. 19. On the 37” x 60” machine, this stop is Emergency Stop Button located just above the opening to the sanding head... -
Page 14: Conveyor Table Speed Adjustment Controls
Introduction To The Components Conveyor Table Speed Adjustment Controls Control Panel Your machine is equipped with an electric DC motor with an adjustable feed speed. You can adjust the speed of the conveyor table from 0-18 feet per minute. This is accomplished by turning the black knob on the control panel. -
Page 15: Conveyor Table Height Adjustment Gauges
Introduction To The Components Conveyor Table Height Adjustment Gauges There are two table height gauges included as standard equipment on the Safety Speed Cut Wide Belt Sanders. There is also one optional gauge available. See Fig. 25. The two standard height gauges are simple systems. -
Page 16: Simple Stationary Pointer
Introduction To The Components Simple Stationary Pointer The simple stationary pointer is colored white and Stationary Pointer is located on the left side of the machine on the red safety bar. This is directly above the machine’s table. See Fig. 26. This pointer is used for quick setting of the table height according to your material thickness. -
Page 17: Abrasive Belt Tracking System
Introduction To The Components Abrasive Belt Tracking System Air Valve #1 Air Valve #3 The machine is equipped with an air regulator. The regulator should be adjusted to approximately 60 to 65 psi. This is for all operations of the machine. The regulator can be adjusted by turning the yellow knob located on the front of the regulator. -
Page 18: Introduction To The Components
Introduction To The Components The piston comes out, it then pushes on the right side of the top roller moving that end of the roller closer to the out feed side of the machine. The belt will then track to the left side of the machine until the sanding belt clears the eye. -
Page 19: Sanding Operations
Sanding Operations Operational Checklist Before operating your unit, completely read and have a full understanding of this operator’s manual. You should not operate your unit unless you have a full understanding of how the machine operates. Belt Loading Before operating your machine, review the Door following steps. -
Page 20: Abrasive Sanding Belt General Information
Sanding Operations Abrasive Sanding Belt General Information Choose the appropriate abrasive sanding belt grit for your intended application. Utilize the table below as a quick guideline to help you choose an appropriate abrasive sanding belt for your application. GRIT APPLICATIONS 36-40 1. -
Page 21: Abrasive Sanding Belt Installation
Sanding Operations Abrasive Sanding Belt Installation Complete the following steps to install the sanding belt. 1. Turn the air pressure switchto the off position. Air Pressure See Fig. 36. Switch NOTE: Do not turn air off until sanding head has come to a complete stop. 2. -
Page 22: Operating The Machine
Sanding Operations Operating The Machine Ruler Complete the following steps to operate the Indicator machine: 1. Measure the thickness of the material to be sanded. Adjust the table height adjustment handwheel. See Fig. 39. Adjust until the ruler indicator reads slightly less than the thickness Table Height of the material to be sanded. - Page 23 Sanding Operations 5. Adjust the speed of the conveyor belt. Refer to the “conveyor belt speed adjustment” section on page 14. See Fig. 42. 6. Stand to one side or the other of the infeed table. Never stand directly inline with the table.
- Page 24 Sanding Operations Feed Stock In Alternating Areas Of Conveyor Belt To Evenly 9. It is important to use the full width of the Wear Belt. abrasive sanding belt whenever possible. Feed the stock in alternating areas of the conveyor table to evenly wear the abrasive sanding belts.
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Page 25: Introduction To The Platen
Sanding Operations Introduction To The Platen The platen is used only for finish sanding. Platen NOTE: The platen is not designed for stock removal. Use the platen only for finish sanding. Stock removal should be completed first. See Fig. 48. Platen NOTE: All sanding marks should be removed with a medium grit belt before finish sanding... -
Page 26: 37" X 60" Model Platen
Sanding Operations 37” X 60” Model Platen The platen is removable on the 3760. The platen is not installed on the machine from the factory. Install the platen for the final finishing pass or two of 120 grit or finer belts. -
Page 27: 4375 Series Models Platen
Sanding Operations 4375 Series Models Platen The platen is used only for finishing sanding. Complete the following steps for finish sanding on the Model 4375 with the platen: 1. Locate the platen adjustment system. It is located inside the belt loading door. See Fig. 2. -
Page 28: Platen Removal 4375
Sanding Operations 4375 Platen Removal To remove the platen, complete the following steps: 1. Lower the platen by turning the platen adjustment knob to the 6:00 position (43”x 75” only.) Belt Loading 2. Release sanding head hold down lever. Door Spacer 3. -
Page 29: Maintenance
Maintenance Repairs If repairs on your machine are needed beyond your capability, call Safety Speed at 800-772-2327. Safety Speed can provide technical advice or give you the name of a dealer Sanding Head Roller near you who can service your machine. Grease Zert WARNING: Always disconnect power to the machine before doing any... -
Page 30: Conveyor Drive Gear Reducer
Maintenance Conveyor Drive Gear Reducer The conveyor drive gear reducer is supplied with a life-time lubricant. See Fig. 57. Swing Arm Top Idler Roller The swing arm (top idler roller) has a pivot bushing. The bushing should be lubricated with motor oil every 30 days. -
Page 31: Platen Graphite Replacement
Maintenance Platen Graphite Replacement The platen should be inspected periodically for wear. There are three main components to the Platen platen: 1. The platen sleeve. See Fig. 61. 2. The platen graphite. See Fig. 61. 3. The platen felt. See Fig. 61. Inspect the platen for wear marks that run through the graphite. -
Page 32: Platen Felt Replacement
Maintenance Platen Felt Replacement The platen should be inspected periodically for Platen wear. There are three main components to the platen: 1. The platen sleeve. See Fig. 63. 2. The platen graphite. See Fig. 63. 3. The platen felt. See Fig. 63. Graphite Inspect the platen for wear marks that run through the graphite. -
Page 33: Contact Roller Resurfacing
Maintenance Contact Roller Resurfacing The conveyor table and the contact roller must be exactly parallel with each other. If they are not exactly parallel, the contact roller will wear unevenly into a cone shaped surface. If uneven wear has not yet occurred refer to the conveyor table leveling procedures in this manual. -
Page 34: Contact Roller Removal/Replacement
Maintenance Contact Roller Drive Pulley Removal/Replacement To remove the contact roller complete the following steps: 1. Remove the bolt on door on the side of the machine. 2. Remove the drive pulley. This is accomplished by unscrewing the three 1/4” bolts from the hub. -
Page 35: Contact Roller Reinstallation
Maintenance Contact Roller Reinstallation To reinstall the contact roller complete the following steps: 1. Clean the roller shafts with a solvent such as Contact Roller rubbing alcohol or paint thinner. 2. Clean the inside of the bearing’s set screw holes with solvent. 3. -
Page 36: Pinch Roller And Idler Roller Replacement
Maintenance 6. Lower the front pinch roller back in place. The pinch roller should go up anddown about 1/64 inch - 1/32 inch when material passes under it. Idler Roller Pinch Roller and Idler Roller Replacement These rollers are positioned parallel to the contact roller. -
Page 37: Rear Idler Roller Leveling
Maintenance Rear Idler Roller Leveling To level the rear idler roller complete the following steps: 1. Place two metal spacers of equal height on the conveyor table under both rollers. Figure 75. 2. Raise the table until the material just comes into contact with the contact roller. -
Page 38: Level The Conveyor Table
Maintenance Level The Conveyor Table Complete the following steps to level the conveyor table. 1. Remove the bottom guards. 2. Place shims under the jack screw bearings on the low side of the table. Figure 77. NOTE: This is a two-person job. 3. -
Page 39: Wide Belt Sander Belt Tracking
Maintenance Wide Belt Sander Belt Tracking If the tracking piston needs to extend out faster open (loosen) the #1 valve, if it needs to extend If the belt is tracking too far one-way or not slower the #1 valve needs to be closed (tighten). If tracking at all. -
Page 40: Maintenance
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Page 41: Trouble Shooting
Trouble Shooting TROUBLE SHOOTING PROBLEM CAUSE SOLUTION Machine will not The machine is equipped 1. Check for correct air pressure. with an air cut-out switch. It start 2. Check all Emergency Stop switches, one may be will prevent the machine tripped. -
Page 42: Sanding Belt Tracking
Trouble Shooting PROBLEM CAUSE SOLUTION The abrasive sanding belts To prevent these marks, lower the platen. When the have a splice. They are platen is lowered it will sand less per pass and should usually taped to hold them give you the smooth finish needed. together. - Page 43 2. Remove the back door on the model 3760 or 4375. 3. Turn the air control to the “on” position. Remove the The electric photo eye light abrasive sanding belt. With the motor in the “off” position, beam is not hitting the place your hand in between the reflector and the eye.
- Page 44 Trouble Shooting PROBLEM CAUSE SOLUTION Sanding belt Foreign matter can get into Open the No. 3 air valve a turn or two. Foreign matter tracks to the the air line. The debris will move through the air valve and exit the machine. left.
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Page 45: Exploded Views And Parts List
4375 Exploded View & Parts List Figure 80 Figure 78 Figure 81 Part Description Figure 79 Number Part Description WB613 Left Side Door Number Table Lift Assembly: WB612 Front Guard WB638 Table Wheel Handle WB626 Front Face Plate Table Lift Handle WB544 WB513 Height Indicator... - Page 46 4375 Exploded View & Parts List Figure 84 Figure 82 Figure 85 Part Description Number Figure 83 WB614 Rear Panel WB616 Lower Rear Panel Part Description WB608 Top Cover Panel Number WB615 Right Side Panel WB101 DC Motor WB102 Gear Reducer WB79 Roller Gear (30 tooth) WB38...
- Page 47 4375 Exploded View & Parts List Figure 86 Figure 88 Figure 89 Part Description Number Figure 87 WB128 Swing Arm Roller Part Description WB135 Left Swing Arm Bearing Number WB659 Swing Arm Block WB617 Dust Vent WB618 Swing Arm WB16 Pressure Gauge Left Limit Switch: WB14...
- Page 48 4375 Exploded View & Parts List Figure 92 Figure 90 Figure 93 Part Description Number WB658 Right Idler Roller Bearing Figure 91 WB137 Rear, Right Pinch Roller Bracket WB642 Rear, Right Jackscrew Cap Part Description WB110 Jackscrew Cap Bushing Number WB127 Idler Roller WB112...
- Page 49 4375 Exploded View & Parts List Figure 94 Figure 97 Figure 95 Part Description Number WB74 (3) Swing Arm Spring WB202 Swing Arm Piston Figure 96 Part Description Number WB719 Front, Left Jackscrew With Bevel Gear WB53 WB40 Jackscrew Bearing WB538-43 Table Chain WB719...
- Page 50 4375 Exploded View & Parts List Figure 98 Part Description Number WB108 Roller Bushing - 10 HP Figure 99 WB106 Roller Bushing - 20 HP Part Description WB106 Roller Bushing - 30 HP Number WB104 Roller Pulley - 10 HP WB18 Low Air WB656...
- Page 51 4375 Exploded View & Parts List Figure 101 Part Description Number PS516 Air Hose WB105A 1/4 x 1/4 NPT, strait WB 703 Air Fitting, Female #1 Solenoid WB12 Solenoid WB105C 1/4 x 1/4 NPT, 90 Long Threaded Tube #2 Solenoid WB12 Solenoid WB105C...
- Page 52 4375 Exploded View & Parts List Figure 102 Part Description Number WB713 Platen Kit Complete WB627 Platen Holder, Galvanized 1005 Pressed White Felt, 43” WB34 WB31 Platen Graphite WB637 Hold Down Clamp WB666 Platen Adjustment Pin WB72 Platen Pin Spring WB138 Safety Switch WB710...
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Page 53: 3760 Exploded Views And Parts
3760 Exploded View & Parts List 3760 Exploded View & Parts List Figure 103 Figure 105 Figure 104 Figure 106 Part Description Part Description Number Number WB502 Front Upper Panel WB67 Load Meter WB505 Front Lower Panel WB93 On/Off Air Switch... - Page 54 3760 Exploded View & Parts List Figure 107 Figure 108 Part Description Number WB542 Door Handle WB501 Left Side Door Panel WB85 Rear Table Roller WB40 (2) Rear Roller Bearing (Both Sides) Figure 109 WB504 Lower Left Side Panel Table Tension Bolt (7/16 - 14 x 4,...
- Page 55 3760 Exploded View & Parts List Figure 111 Figure 110 Part Description Number WB503 Rear Top Panel WB505 Rear, Lower Panel Figure 112 Part Description Number WB543 Photo Eye Reflector WB537 Photo Eye Holder WB105C 1/4 x 1/4 NPT, 90...
- Page 56 3760 Exploded View & Parts List Figure 115 Figure 113 Figure 116 Part Description Number WB43 Right Contact Roller Bearing WB80 Contact Roller Figure 114 WB522 Contact Roller Kit WB137 Front, Right Pinch Roller Bracket Part Description WB81 Front Pinch Roller...
- Page 57 3760 Exploded View & Parts List Figure 117 Figure 119 Figure 120 Figure 118 Part Description Number Figure 121 WB84 Idler Bottom Roller WB41 (2) Contact Roller Bearings (Both Sides) Part Description Number WB137 Rear, Right Pinch Roller Bracket WB515...
- Page 58 3760 Exploded View & Parts List Figure 123 Figure 122 Part Description Number WB540 Ground Bar Figure 124 Neutral and Hot Bar WB17 Main Contact Part Description WB19 Thermal Overload - 15 HP Number WB98 Current Transformer WB74 (3) Swing Arm Springs...
- Page 59 3760 Exploded View & Parts List Figure 125 Figure Figure 126 Part Description Figure 128 Number #1 Solenoid: Solenoid WB12 WB105A 1/4 x 1/4 NPT, Strait WB105C 1/4 x 1/4 NPT, 90 #2 Solenoid: WB12 Solenoid WB105C (2) 1/4 x 1/4 NPT, 90...
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Page 60: Electrician Wiring Schematics
3760 Exploded View & Parts List 1-Phase Wiring Schematic... -
Page 61: Three Phase Wiring Schematic
3760 Exploded View & Parts List 3-Phase Wiring Schematic...