Dewalt DC841- User Manual

Page 2 - Service Record; Date

2 Service Record Serial Number_____________________ Date Purchased ______________ Date Service Performed By

Page 3 - INDEX; General Rules for Safe Operation of Power Tools; parts. Rubber footwear is recommended when working outdoors.; BOTH UPPER AND LOWER GUARDS MUST REMAIN IN PLACE FOR SAFE CUTTING

3 INDEX General Rules for Safe Operation of Power Tools 1. KNOW YOUR POWER TOOL— Read the owner’s manual carefully. Learn the applica- tions and limitations as well as the specific potential hazards of the tool. 2. GROUND ALL TOOLS. 3. KEEP GUARDS IN PLACE. Keep guards in working order. 4. KEEP WORK...

Page 4 - MODEL; Unpacking and Attaching the Table Legs

4 FLOOR MOUNTING DIMENSIONS Your saw may be mounted to the floor. Use the diagram at right to assist you in placing the saw and fastening it to the floor. MODEL 3512-01 3512-03 MOTOR: Horsepower 3 3 Phase 1 3 Voltage 220 208/230/460 Enclosure TEFC TEFC RPM 3425 3425 Brak e Automatic Automatic Arbor ...

Page 5 - Electrical Hookup -; Connecting Electrical Current

5 Electrical Hookup - Recommended Copper Wire Sizes (A.W.G.) To obtain maximum efficiency from your saw motor, the feeder wire from the power source to the machine should comply with the table below. 1 Phase 3 Phase 3 Phase Motor Horsepower 200-240 V 200-240 V 440-480 V 3 6 6 — 3 — 4 6 NOTE: This ta...

Page 6 - Electrical Precautions; Mounting the Blade (; Caution! Disconnect power source before mounting blade); Overload Protection

6 Electrical Precautions 1. Be sure machine is properly grounded. 2. Do not attempt to operate saw on any voltage other than the one designated. 3. Use correct size time delay fuses to protect incoming current. 4. If it takes more than 3 seconds to reach maximum speed with a standard blade, turn the...

Page 7 - Using the Adjustable Arm Stop

7 General Safety Precautions 1. Be sure the blade rotates clockwise when facing the saw from the left side. Blade must rotate to the front of the saw. 2. Be sure all clamp handles are tight before turning on motor. 3. Keep the blade sharp and properly set. 4. Hold or clamp the material firmly agains...

Page 8 - Operating Instructions; Control Locations; Moving the Arm Horizontally and Vertically

8 Operating Instructions !!! CAUTION !!! BOTH UPPER AND LOWER GUARDS MUST REMAIN IN PLACE FOR SAFE CUTTING OPERATION. Control Locations A. Rip Index Pin B. Miter Latch Handle C. Arm Clamp Handle D. Elevating Control Handle E. Miter Scale F. On/Off Switch G. Adjustable Arm Stop H. Yoke Clamp Handle I...

Page 9 - Cross Cutting; In Rip—Out Rip

9 !!! CAUTION !!! BOTH UPPER AND LOWER GUARDS MUST REMAIN IN PLACE FOR SAFE CUTTING OPERATION. Rotating the Motor to Bevel Cutting Position Raise the arm to allow the saw blade sufficient clearance above the table top. Release the bevel clamp handle (A) and pull the bevel index pin. The motor can no...

Page 11 - Maintenance Adjustments and Alignments; Adjustment of Base to Column Fit; Adjustment of the Rollerhead to Arm; Continued on the next page

11 Maintenance Adjustments and Alignments Caution! Disconnect and lockout power supply before making any adjustments or alignments. Your saw has been completely assembled, aligned and tested at the factory...then partially disassembled for shipment. Han-dling during shipment may cause some misalignm...

Page 12 - Adjustment of the Rollerhead to Arm (cont’d); Adjustment of the Yoke Clamp Handle; Adjustment of Table Top Parallel to Arm; How to check the Guide Strip For Accuracy

12 Adjustment of the Rollerhead to Arm (cont’d) 5. Insert socket wrench into bottom of bearing shaft (C) and turn until the bearing touches the arm track on both top and bottom radii. Repeat for both shafts. Bearings should be tightened only so that they roll and do not slide. 6. Replace the end cap...

Page 14 - Adjusting Crosscut Travel Parallel to Arm Tracks (continued); Square the Saw Travel with the Guide Strip

14 Adjusting Crosscut Travel Parallel to Arm Tracks (continued) After making the left and right adjustments, tilt the motor to a 45 o bevel cutting position and make cuts in a 2”x 4” piece of material. If tooth marks appear the motor is too high or low in the rear yoke: If after making these adjustm...

Page 15 - Parts List and Ordering Instructions; Guard Assembly

15 Parts List and Ordering Instructions Order only genuine replacement parts from your Original Saw Company Dealer. When ordering parts be sure to include: • Name of manufacturer—Original Saw Company • Complete machine identification data found on name plate on front of frame • Complete motor identi...

Page 16 - Arm Assembly

16 Index Part Description Qty Index Part Description Qty No. No. No. No. 1 083294 Arm Clamp Handle 1 15 080489 8-32x3/8 Panhead Screw 1 2 096767 Miter Latch 1 16 203597-09 Miter Pointer 1 3 083122 Miter Latch Adjusting Screw 2 17 096771-01 Arm Clamp Bolt 1 4 003041 #4x 5/16 Drive Screw 2 18 082387 1...

Page 17 - Rollerhead Assembly

17 Rollerhead Assembly 800500-02 Index Part Description Qty Index Part Description Qty No. No. No. No. 1 400221 Eccentric Shaft 2 8 099369-07 3/8-24 Hex Finish Nut 4 2 400220 Bearing 4 9 088165 Index Pin Spring 1 3 400225 King Bolt 1 10 119510 Index Pin 1 4 069532 Knob 1 11 082387 1/4-20 x 1/4 Cuppo...

Page 18 - Yoke Assembly

18 Yoke Assembly 400300 Index Part Description Qty Index Part Description Qty No. No. No. No. 1 119510 Locating Pin 1 16 099361-16 5/16 Flat Washer 2 2 088165 Latch Spring 2 17 400330 Bevel Clamp Handle 1 3 400336 Support Screw 1 18 400323 Bevel Scale 1 4 099376-04 10-24 Hex Jam Nut 1 19 400322 Beve...

Page 19 - Base and Column Assembly

19 Base and Column Assembly 400400 Index Part Description Qty Index Part Description Qty No. No. No. No. 1 400440 Column 1 13 099384-07 5/16 Lockwasher 2 2 400470-01 Elevating Assembly 1 14 099155-24 5/16-18x 1 1/2 Sockethead Cap Screw 2 3 121616 Gib 1 15 400460 Oil Free Bearing 1 4 099191-36 3/8-24...

Page 20 - Magnetic Starter Assembly

20 Magnetic Starter Assembly (Telemecanique Starter) Index Description Qty 3 HP 3 Phase 3 HP 1 Phase No. 1 Transformer 1 208/230/460 volt 122105-50 122105-50 380/575 volt 122105-51 n/a 2 Enclosure 1 096759-03 096759-04 3 Magnetic Starter 1 122108-84 122108-84 4 Heater Pack 1 208v 1 phase — 122110-86...

Page 21 - Table & Frame Assembly

21 Table & Frame Assembly 400500 Index Part Description Qty Index Part Description Qty No. No. No. No. 1 400531 Front Board 1 11 088181-01 Frame Leg 4 2 400532 Spacer Board 1 12 000415 3/8 Lockwasher 16 3 400533 Fence Board 1 13 084180 3/8-16Heavy Hex Nut 16 4 400519 Rear Table Cleat 1 14 400510...

Page 22 - Motor Assembly

22 Index Part Description Qty No. No. 1 21703164 14-4 motor cable 3512-03 9.75 21703114 14-3 motor cable 3512-01 9.75 2 081721 90 degree strain relief 1 3 099248-12 8-32 x 3/4 pan hd mach screw 4 4 123466-01 motor data plate 3 phase 1 123466-08 motor data plate 1 phase 5 000407 #8-32 hex nut 2 6 088...

Page 23 - Instructions for Changing the Motor Voltage; Disconnect and lockout power; Changing the Motor Voltage; WARNING—DISCONNECT AND LOCKOUT POWER BEFORE SERVICING

23 Instructions for Changing the Motor Voltage 1) Disconnect and lockout power – Electrical shock could occur if this is not done. 2) Reconnect motor and transformer leads as shown in the chart above to match your required voltage. 3) Reset the dial for the proper amperage setting shown in the chart...

Page 26 - ELECTRICAL TROUBLE-SHOOTING GUIDE; OUT WHEN INSPECTING OR REPAIRING MOTOR OR CONTROLS

26 TROUBLE POSSIBLE CAUSE SUGGESTED REMEDY Power line not connected to cable. Correct power wiring. See wiring diagram inside mag-netic starter box. Saw motor Thermal overload relays may have tripped. Allow time for overload relays to cool. will neither start nor Faulty (brown) line fuse, line circu...

Page 27 - ACCESSORIES; Auto Return Device; PREVENTIVE MAINTENANCE

27 ACCESSORIES Auto Return Device — Returns carriage to start position or rear of arm (required by OSHA). Standard equipment on 1994 and newer saws. 400130 For all Black & Decker DeWalt Contractor models and all Original 3512 Series Roller Table Extension — 20” wide and 8’ long. Mounting bracket...

Page 28 - Industrial Use Warranty Information; IMPORTANT

28 Industrial Use Warranty Information Your new Original Radial Arm Saw is precision manufactured under strict quality stan-dards. In the unlikely event there is trouble with your machine, the Original Saw Com-pany warrants the machine for the period of one year from the date of purchase. The warran...

Table of Contents:

Summary

Other Dewalt Models