SafetySpeed 3760, Owner'S Manual

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 ...

Page 2: ...aten 26 Installing and Using the Platen 26 4375 Series Models Platen 27 Platen Removal 4375 28 Maintenance 29 40 Repairs 29 Lubrication 29 Sanding Head Rollers 29 Conveyor Table Rollers 29 Bronze Bushings 29 Jack Screws 29 Conveyor Drive Gear Reducer 30 Swing Arm Top Idler Roller 30 All Metal Moving Parts 30 Drive Motor Belt Tension 30 Platen Graphite Replacement 31 Platen Felt Replacement 32 Cont...

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Page 4: ...y must be returned freight prepaid Safety Speed Mfg assumes no responsibility for damage or accidents resulting from the misuse of this tool its misapplication or failure to follow precautionary safety measures Safety Speed Mfg assumes no responsibility for any consequential damage or loss of production Safety Speed Mfg will not be responsible for claims made for machines that are not used or main...

Page 5: ...ar a protective hair covering to contain long hair Unprotected hair may be caught in moving parts When working outdoors wear rubber gloves and insulated non skid footwear Keep hands and gloves away from moving parts USE SAFETY EQUIPMENT Everyone in the work area should wear safety goggles or glasses with side shields The safety goggles and or glasses should comply with current safety standards Wea...

Page 6: ...e on your machine DO NOT FORCE THE TOOL Your tool will perform best at the rate for which it was designed Excessive force only causes operator fatigue Excessive force also causes increased machine wear and increased risk This all can cause reduced control of the machine and results in a danger to the operator KEEP HANDS AWAY FROM ALL CUTTING SANDING EDGES HOLDDOWNS AND MOVING TABLE PARTS DO NOT AB...

Page 7: ...er the services of compressed air dust collection and electricity Also position the machine considering your environment s limitations for in feed and out feed space See Fig 1 Mount the machine to the floor Use the holes on each of the four corners of the machine frame to mount it to the floor See Fig 3 Place Moving Jacks Here Figure 1 Machine Dimesions Model 3760 A 50 1 2 1280mm B 63 1600mm C 47 ...

Page 8: ... labels L 1 and L 2 on the main magnetic starter See Fig 4 5 2 Connect the ground wire from the service to the grounding bar inside the co ntrol panel See Fig 6 Connect the neutral wire from the service to the wire labeled neutral See Fig 6 NOTE If there is not a neutral wire in the incoming service then connect the small neutral wire from the machine to the grounding bar This may already be conne...

Page 9: ...o the pig tail labeled neutral See Fig 7 or 8 4 Check the direction of rotation of the contact roller from the front belt viewer The contact roller should rotate in a counter clockwise rotation when looking at it from this position If the contact roller is rotating clockwise the electrical service coming into L 1 and L 2 needs to be reversed See Fig 7 and 8 NOTE If contact roller is turning clockw...

Page 10: ...Collection Connect an appropriate dust collection system 1000 1800 CFM to the machine The machine utilizes a 6 dust chute The dust exits through the top of the machine See Fig 11 NOTE Failure to connect the machine to an appropriate dust collection system may result in problems with the machine s operation These problems can include false signals from the belt tracking mechanisms These problems ca...

Page 11: ...wn the conveyor table speed lowering the table or raising or removing the platen Air Control The air control is located toward the top of the control panel See Fig 14 The toggle switch turns the air on and off It is labeled Air On Controls See Fig 14 Leave the air switch in the Off position when the machine is not being used See Fig 14 A single regulator regulates the air coming into the wide belt...

Page 12: ...r s manual before operating the machine Sanding Head Stop Control Press the red colored button on the control panel to stop the sanding belt rotation during normal operating conditions This button is labeled Sanding Head Stop See Fig 17 Pressing this button will turn off the sanding head and the conveyor table Control Panel Sanding Head Start Stop Label Figure 15 Control Panel Green Start Button S...

Page 13: ...o be stopped immediately There are also two emergency stops inside the cabinet that will automatically shut the machine down in the event that the abrasive sanding belt overtracks to the left or right hand side of the machine See Fig 20 Inside the belt loading door there is a safety switch which requires the door to be closed before operation The other emergency stops must be pressed to shut the m...

Page 14: ...is accomplished by turning the black knob on the controlpanel See Fig 21 22 The conveyor belt speed adjustment knob is labeled with a 0 10 scale Turn the knob clockwise towards 10 for faster conveyor belt feed rate Turn the knob counter clockwise towards 0 for slower conveyor belt feed rate Control Panel Conveyor Table Speed Adjustment Figure 21 Control Panel Conveyor Table Speed Adjustment Figure...

Page 15: ...se of each of the table height gauges on the machine Gauge With Ruler And Indicator This gauge is positioned on the left hand side hand wheel side of the machine It is positioned vertically There is a red colored indicator which points to your position on the ruler This shows the table height in relationship to the contact roller See Fig 23 It is also used to indicate when you have reached your de...

Page 16: ...ll prepare you to sand without worrying about overloading the machine This gauge is designed to make a quick simple table height adjustment Optional Digital Positioning Gauge System The optional digital read out system utilizes a digital display to helpyou appropriately adjust the table height See Fig 27 This gauge measures the distance that you are raising or lowering the table in relationship to...

Page 17: ...he swing arm roller tracks the abrasive sanding belt back to the right side of the machine toward the photoelectric eye See Fig 28 Note To increase belt tracking speed turn associated valve counterclockwise See decal in Figure 28 To decrease belt tracking speed turn associated valve clockwise See decal in Figure 28 ABRASIVE BELT TRACKING QUESTIONS ANSWERED How does the tracking system work The abr...

Page 18: ...that is in the air piston will exhaust through the photoelectric eye keeping the eye clear of sawdust The piston will then be pulled back by spring pressure making the sanding belt track towards the right side again and beginning the cycle over NOTE Under normal working conditions every time the eye gets covered the tracking solenoid will open and close making a clicking sound It is normal to hear...

Page 19: ...sure all machine guards are bolted in place and the belt loading door is closed See Contact Roller Should Turn Counter Clockwise Belt Loading Door Fig 32 4 Adjust the conveyor table to the proper height for the thickness of the material you are sanding Refer to the Table Height Adjustment Gauges page 15 Also shown in Fig 33 Before operating the machine the operator must be familiar with the operat...

Page 20: ...es and or planer marks 100 120 GRIT Use as an in between belt to remove sanding marks from coarser grit sanding passes 150 180 GRIT Used for finishing passes 220 GRIT Use to remove cross grain scratches 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 appropri...

Page 21: ...machine See Fig 37 6 Pay special attention to the positioning of the abrasive sanding belt Position the abrasive Air Pressure Switch Figure 36 Air Pressure Switch Top Swing Idler Roller Belt belt between the spring limit switches NOTE Be sure the belt is not pushed all the way against the back of the machine The machine has two spring limit switches See Fig 38 They will automatically actuate the e...

Page 22: ...d will then start During this normal operation you will have a regular clicking sound This is normal When the abrasive sanding belt rotates in normal operation it will pass back and forth left to right across the electric eye The eye will turn on the tracking solenoid If the edge of the abrasive sanding belt should become frayed it will click even more often This is also normal 4 Press the conveyo...

Page 23: ...kick back situation 8 Feed your material into the machine Keep an eye on the load meter The load meter gauge measures the percentage of load on the motor when the material comes into contact with the platen Load Meter The sander is equipped with a main motor load meter See Fig 13 The motor load is shown in a percentage basis on the meter The machine should not be run when the pointer on the load m...

Page 24: ...6 When sanding extra long pieces start the pieces on one side of the conveyor belt Angle them so the trailing end will exit the machine on the opposite side of the conveyor belt This will use the whole width of the machine and the abrasive sanding belt See Fig 46 11 When sanding with finer grits or finishing sanding to get best results you need to run the piece straight through the sander in the d...

Page 25: ... platen only for finish sanding Stock removal should be completed first See Fig 48 NOTE All sanding marks should be removed with a medium grit belt before finish sanding with a platen NOTE With the stock removal and sanding marks removal completed you are now ready to Platen Platen use the platen for finish sanding Figure 48 Platen And Installation ...

Page 26: ...en the belt loading door loosen the sanding head lever and remove the spacer block See Fig 49 3 Slide the complete platen between the two bottom rollers on the platen support See Fig 49 50 4 Replace the spacer block and tighten the sanding head lever Spacer Block Belt Loading Door 5 After completing the finish sanding remove the platen and store for future use When not in use the platen should be ...

Page 27: ...es into contact with the abrasive belt around the middle hole 3 00 position adjustment The platen is adjustable up and down a full 1 8 5 Adjust the platen according to the desired position 6 Feed your material into the machine keeping an eye on the load meter The load meter gauge measures the percentage of load on the motor The machine should not be run when the pointer on the load meter is into t...

Page 28: ...2 Release sanding head hold down lever 3 Remove the sanding spacer block See Fig 52 4 Pull the platen out from the belt loading door See Fig 53 The platen should be inspected periodically for wear Refer to the platen maintenanceinstructions in the Maintenance Section Sanding Head Hold Down Lever Belt Loading Door Spacer Block Figure 52 Platen Platen Figure 53 Remove Platen As Shown ...

Page 29: ...once a month whichever time frame is shorter See Fig 54 55 Conveyor Table Rollers The conveyor table rollers should be greased every three to four months Bronze Bushings The bronze bushings are located on the jack screws hand wheels not shown and at the ends of each of the two pinch rollers not shown Lubricate the bushings with motor oil every 30 days See Fig 56 Jack Screws The jack screws that su...

Page 30: ...neral rule of thumb the metal moving parts of the machineshould be lubricated every 30 days Drive Motor Belt Tension Check the tension of the drive motor belt or belts every 30 days The tension can be adjusted by lowering the motor evenly The belt s should only be as tight as needed to prevent the belt from slipping See Fig 59 Figure 57 Conveyor Drive Gear Reducer Swing Arm Bushing Swing Arm Top I...

Page 31: ...have a consistentflat surface If the surface is not consistent and flat the felt should be Platen Felt Figure 60 Platen replaced See Felt Replacement Instructions An irregular sanded surface will result from using bad graphite and or felt To replace the platen graphite complete the following steps 1 Remove the small fasteners that hold the graphite in place See Fig 61 Not Shown Under Graphite Slee...

Page 32: ...t Platen Graphite Figure 62 Felt and Graphite pad should have a consistent flat surface If the surface is not consistentand flat the felt should be replaced See Felt Replacement Instructions An irregular sanded surface will result from using bad graphite and or felt To replace the platen felt complete the following steps 1 Remove the small fasteners that hold the Felt Not Shown Graphite Fasteners ...

Page 33: ...e abrasive sanding belt from the sander Lower the table height until no material would be removed on a pass 5 Press the sanding head start button See Fig 65 6 Press the conveyor start button See Fig 65 7 Adjust the table height so you will remove a minimal amount of rubber from roller 8 Run the sanding board through the machine Remove a minimal amount of rubber on each pass until you have removed ...

Page 34: ...f the contact roller See Fig 68 5 Remove the contact roller See Fig 68 Complete the following steps to remove the contact roller bearing 1 Loosen and remove the set screws from the bearing Loc Tite has been used to cement them in place Drive Pulley Figure 66 Remove Drive Pulley Unbolt Dust Collection Chute Figure 67 Remove Dust Chute Bearing Cast 2 The bearings have also been cemented with Loc Tit...

Page 35: ...ller If a dial indicator is not available you can use a steel ruler To level the contact roller use the same size metal spacers as shown in Fig 70 and complete the following steps 1 Place the metal spacers under the roller on top of the table See Fig 70 NOTE You may also need to roll back the side of the conveyor belt to expose the steel table by loosening the tensioning bolts and then wrapping so...

Page 36: ... and one on the out feed are to be adjusted 1 16 lower than the contact roller The rear idler roller steel roller behind the contact roller is to be positioned 1 16 higher than the contact roller The idler roller replacement instructions are very similar to the contact roller re installation on the previous page Refer to this section for replacement of the idler roller See Figures 72 73 and 74 Idl...

Page 37: ...ng it about 1 16 above the bottom of the contact roller Level The Table To level the table complete the following steps 1 Cut a board in half 2 Send the two boards through the machine sanding both of them at the same time one board on the right side and the other board on the left side See Fig 76 3 Measure the twopieces with a micrometer or a dial calliper If the table is level thetwo pieces shoul...

Page 38: ...Figure 77 NOTE This is a two person job 3 Pry up the bearing using two screwdrivers one from each side The other person then slides the shim under the bearing 4 Check the table for corner rock 5 Lift each corner of the table up and down The table should be sitting on all four jack screws evenly 6 Add additional shims as necessary to level the Jack Screw Bearing conveyor table Figure 77 Jack Screw ...

Page 39: ...o eye does not work or it is not aimed at the reflector make sure the eye is aimed at the reflector and that the reflector is clean Make sure that the motor is OFF Next check if the photo eye solenoid is working To do this turn the air to the machine on and cover the photo eye with something If the solenoid is working properly the solenoid will make a clicking noise and the tracking piston shaft w...

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Page 41: ... after a board has been finished 2 This can happen if the settings for the conveyor belt have been adjusted Example The four dials inside the control box 3 This can also happen when the conveyor belt is loose on the table due to stretching The tensioning bolts must be tightened 1 To prevent thesemarks lower the platen When the platen is lowered it will sand less per pass and should give you the sm...

Page 42: ...l 2 Replace the abrasive sanding belt 3 Clean the contact roller 4 Resurface the contact roller 5 Replace the contact roller The sanding belt tracks to the right until it shuts the machine down Sometimes foreign matter enters the air lines This debris lodges inthe No 1 air valve The No 1 air valve is the valve that is located on the far left of the machine Air cannot pass through the air valve the...

Page 43: ... do not either the eye s invisible light beam is not getting to and from the reflector or the solanoid valve is not workingor the eye is not working Check if the light beam is hitting the reflector Complete the following steps to ensure the light beam is hitting the reflector Place a reflective surface against the lense of the photoeye If there is still no clicking heard and piston action seen mov...

Page 44: ...again With the air valve open this much the belt will track back to the right very fast The valve then has to be closed down until the sanding belt tracks slow again This adjustment must be done when the machine is running WARNING Be very careful not to come in contact with any moving parts Do not wear neck ties gloves or long sleeves Serious injury could result If the belt continues to track to t...

Page 45: ...Roller 8 WB658 2 Rear Table Roller Bearings 9 WB624 Left Side Table Guard 10 WB621 Curved Guard 11 WB662 WB663 Door Handle Door Latch 4375 Exploded View Parts List A 9 6 1 1 11 4 5 2 2 6 9 3 5 Figure 80 Figure 78 7 8 3 7 10 4 8 Figure 81 Figure 79 Key Part Number Description 1 WB612 Front Guard 2 WB626 WB513 Front Face Plate Height Indicator 3 WB611 Conveyor Guard 4 WB651 E Stop Handle 5 WB616 Fro...

Page 46: ... 84 Figure 82 3 7 Figure 85 Figure 83 Key Part Number Description 1 WB615 Right Side Panel 2 WB101 DC Motor 3 WB102 WB79 WB38 WB539 43 Gear Reducer Roller Gear 30 tooth Reducer Gear 15 tooth Reducer Chain 4 WB705 Lower Reducer Guard 5 WB668 E Stop Rod Spring 5 Washers 2 Cotter Pins 6 WB69 E Stop Switch 7 WB704 Upper Reducer Guard 8 WB510 E Stop bushing ...

Page 47: ...ller Bearing 9 WB628 Swing Arm Busing Bracket 10 WB545 Swing Arm Shaft Bushing 11 WB200 43 Tension Piston 12 WB658 Right Swing Arm Bearing 13 WB15 Air Regulator 1 2 1 13 2 12 6 3 7 4 Figure 86 4 5 8 5 Figure 88 3 6 9 7 10 8 11 9 10 Figure 89 Figure 87 Key Part Number Description 1 WB617 Dust Vent 2 WB16 Pressure Gauge 3 WB14 Photo Eye 4 WB623 WB105C Photo Eye Holder 1 4 x 1 4 NPT 90 5 WB543 Photo ...

Page 48: ...racket Flipped 8 WB640 WB110 Rear Left Jackscrew cap Jackscrew Cap Bushing 9 WB719 Rear Right Jackscrew 10 WB40 Jackscrew Bearing 11 WB719 Rear Left Jackscrew 12 WB40 Jackscrew Bearing 1 4 1 2 5 2 6 7 3 3 8 Figure 92 Figure 90 9 11 4 10 5 12 Figure 93 Figure 91 Key Part Number Description 1 WB112 Left Contact Roller Bearing 2 WB137 Front Left Pinch Roller Bracket 3 WB130 Pinch Roller 4 WB100 Right...

Page 49: ...Left Jackscrew With Bevel Gear 2 WB40 Jackscrew Bearing 3 WB538 43 Table Chain 4 WB719 Front Right Jackscrew 5 WB40 Jackscrew Bearing 6 WB62 WB65 WB66 Sander Motor 10 HP Sander Motor 20 HP Sander Motor 30 HP 7 WB52 Idler Gear 8 WB629 Chain Adjustment Bracket 9 WB641 WB110 Front Left Jackscrew Cap Jackscrew Cap Bushing 10 WB643 WB110 Front Right Jackscrew Cap Jackscrew Cap Bushing 11 WB23 4 Table B...

Page 50: ...otor Bushing 20 HP Motor Bushing 30 HP 1 2 1 16 3 2 9 10 4 3 5 4 11 6 5 12 7 13 6 14 Figure 98 7 8 15 Figure 99 Key Part Number Description 1 WB18 Low Air 2 WB540 Ground Bar 3 Neutral and Hot Bar 4 WB17 Main Contact 5 WB556 WB557 Fuse Holder Fuse 6 WB98 Current Transformer 7 WB11 Brake Contact 8 WB11 Table Contact 9 WB77 N O Contact Block Bracket 10 WB77 WB111 N O Contact Block Bracket N C Contact...

Page 51: ... 1 8 Flow Control Valve 6 WB12 WB105C 3 Solenoid Solenoid 2 1 4 x 1 4 NPT 90 7 WB105E 2 1 4 x 1 8 Flow Control Valve 8 WB105D 2 1 4 Tube Tee 9 WB105F 1 4 x 1 8 90 8 3 8 4 1 9 2 1 5 7 2 6 3 4 5 Figure 101 6 7 9 Figure 100 Key Part Number Description 1 WB78 On Off Legend Air 2 WB93 On Off Switch Air 3 WB90 Push Button Green 4 WB91 Push Button Red 5 WB92 Push Button Yellow 6 WB91 Push Button Red 7 WB...

Page 52: ...ription 1 WB713 WB627 WB34 WB31 Platen Kit Complete Platen Holder Galvanized 1005 Pressed White Felt 43 Platen Graphite 2 WB637 Hold Down Clamp 3 WB666 WB72 Platen Adjustment Pin Platen Pin Spring 4 WB138 Safety Switch 5 WB710 Safety Switch Bracket 6 WB139 Door Key 4 6 5 ...

Page 53: ...ect Male 12 Clamp Main Power Supply Entry 3760 Exploded View Parts List 13 6 1 1 2 4 5 3 4 3 5 2 6 7 8 Figure 103 10 12 11 9 7 8 10 9 Figure 104 Figure 105 11 12 Figure 106 Key Part Number Description 1 WB502 Front Upper Panel 2 WB505 Front Lower Panel 3 WB534 Control Panel 4 WB518 WB513 E Stop Bar Height Indicator 5 WB140 Pressure Gauge 6 WB15 Air Regulator 7 WB511 Front Table Guard 8 WB36 Gummy ...

Page 54: ...Tension Bolt 7 16 14 x 4 grade 5 6 WB516 WB544 WB10 WB109 WB54 Table Lift Handle Handle Support Plate Handle Grip Wheel Handle 2 Bushings Handle Bevel Gear 1 1 2 2 3 3 5 4 5 6 Figure 107 Figure 108 4 Figure 109 Key Part Number Description 1 WB500 Right Side Panel 2 WB60 DC Motor 3 WB61 WB56 WB51 WB539 Reducer Conveyor Gear 21 tooth Roller Gear 12 tooth Conveyor Chain 4 WB536 Reducer Guard 5 WB69 E...

Page 55: ...1 2 9 Figure 110 8 Figure 112 Key Part Number Description 1 WB543 Photo Eye Reflector 2 WB537 Photo Eye Holder 3 WB105C 1 4 x 1 4 NPT 90 4 WB14 Photo Eye 5 WB68 WB115 RH Limit Switch right Limit Switch Limit Switch Cover RH 6 WB76 Limit Switch Spring 7 WB519 Wire Strap 8 WB710 Door Safety Switch Door Switch Bracket 9 WB508 Dust Chute ...

Page 56: ...tact Roller Bearing 2 1 1 3 3 4 4 5 2 9 10 Figure 113 Figure 115 6 6 5 7 2 8 Figure 116 Figure 114 Key Part Number Description 1 WB82 Swing Arm Roller 2 WB44 Left Swing Arm Bearing 3 WB521 Swing Arm 4 WB68 WB115LH WB76 Left Limit Switch Limit Switch Left Limit Switch Bracket Limit Switch Spring 5 WB530 Platen Holder 6 WB535 Swing Arm Bushing Bracket 7 WB23 Swing Arm Bushing 8 WB200 Tension Piston ...

Page 57: ...g 10 WB515 Rear Left Jackscrew 11 WB41 Rear Left Jackscrew Bearing 12 WB41 Right Swing Arm Bearing 1 4 12 5 1 5 6 2 2 3 6 4 7 3 Figure 117 Figure 119 8 9 Figure 118 10 8 11 7 Figure 120 9 10 Figure 121 Key Part Number Description 1 WB515 Front Left Jackscrew W 30 Tooth Bevel Gear 2 WB53 DC Front Left Jackscrew Bearing 3 WB538 PS862 Table Chain Master Link 4 WB515 Front Right Jackscrew 5 WB41 Front...

Page 58: ...Variable Speed Controller 14 WB95 WB96 N C Contact Block Bracket N O Contact Block Only 15 WB18 Low Air 16 WB652 Inside Electrical Panel 17 WB557 WB556 Fuse Fuse Holder 15 1 1 8 2 2 9 10 3 11 4 17 12 3 5 4 13 6 7 14 5 16 Figure 122 Figure 123 6 7 8 9 Figure 124 Key Part Number Description 1 WB74 3 Swing Arm Springs 2 WB202 Swing Arm Piston 3 WB57 WB104 Roller Pulley 10 HP Roller Pulley 15 HP 4 WB4...

Page 59: ... 8 NPT Strait 6 WB105D 2 1 4 Tube Tee 7 WB710 WB105E WB105F Air Adjustment Bracket 2 1 4 x 1 8 Flow Control 2 1 4 x 1 8 NPT 90 8 WB15 WB105C WB105F WB105E Air Regulator 1 4 x 1 4 NPT 90 1 4 x 1 8 NPT 90 1 4 x 1 8 Flow Control 4 5 1 6 2 3 1 Figure 125 2 Figure 127 Figure 126 3 Figure 128 4 Figure 129 Key Part Number Description 1 WB533 Belt Spacer Block 2 WB637 Clamping Handle 3 WB512 WB509 WB33 WB...

Page 60: ...60 3760 Exploded View Parts List 1 Phase Wiring Schematic ...

Page 61: ...61 3760 Exploded View Parts List 3 Phase Wiring Schematic ...