ACCU-Pro 670 Assembly And Service Manual

Semi-automatic bedknife grinder

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ACCU-Pro

MODEL 670

SEMI-AUTOMATIC

BEDKNIFE GRINDER

ASSEMBLY

SERVICE

MANUAL

You must thoroughly read and understand this

manual before assembling or maintaining the

equipment, paying particular attention to the

Warning & Safety instructions.

AND

WARNING

6707956 (12-05)

Table of Contents

Troubleshooting

Summary of Contents for ACCU-Pro 670

Page 1 ACCU-Pro MODEL 670 SEMI-AUTOMATIC BEDKNIFE GRINDER ASSEMBLY SERVICE MANUAL WARNING You must thoroughly read and understand this manual before assembling or maintaining the equipment, paying particular attention to the Warning & Safety instructions. 6707956 (12-05)
Page 2: Warnings
SAFETY INSTRUCTIONS Safety Awareness Symbols are inserted into this manual to alert you to possible Safety Hazards . Whenever you see these symbols, follow their instructions. The Warning Symbol identifies special instructions The Caution Symbol identifies special instructions or procedures which, if not strictly observed, could or procedures which, if not correctly followed, could result in personal injury.
Page 3: Safety Instructions
SAFETY INSTRUCTIONS IMPROPER USE OF GRINDING WHEEL MAY CAUSE BREAKAGE AND SERIOUS INJURY. Grinding is a safe operation if the few basic rules listed below are followed. These rules are based on material contained in the ANSI B7.1 Safety Code for "Use, Care and Protection of Abrasive Wheels".
Page 4: Table Of Contents
This machine is intended for grinding the bedknife from a reel mowing unit ONLY. Any use other than this may cause personal injury and void the warranty. This machine is intended for indoor use only. To assure the quality and safety of your machine and to maintain the warranty, you MUST use original equipment manufactures replacement parts and have any repair work done by a qualified professional.
Page 5 This Service Manual is designed for technicians who have the neces- sary mechanical and electrical knowledge and skills to reliably test and repair the ACCU-Pro Bedknife Grinder. For those without that background, service can be arranged through a local distributor.
Page 6: Assembly
ASSEMBLY INSTRUCTIONS NOTE: For clarity, the Grinder is shown on the following pages without the optional carriage bellows installed. UNPACK THE CARTONS NOTE: Before you install the machine, read the following assembly procedure completely. Then study "Getting to Know Your Bedknife Grinder" in the Operators Manual. Use care when unpacking.
Page 7 ASSEMBLY INSTRUCTIONS (Continued) LOCATE AND LEVEL THE GRINDER Set the Grinder on a level concrete floor, on a single uncracked slab of concrete. If the unit must be located near a wall, allow adequate space for operating and servicing. Refer to FIG. 3 for recommended and alternate locations near a wall.
Page 8 ASSEMBLY INSTRUCTIONS (Continued) APPLY POWER BEFORE YOU APPLY POWER TO THE GRINDER, REFER TO THE "IMPORTANT GROUNDING INSTRUCTIONS" ON PAGE 9. 115 Volt Model Only. Plug the control box power cord into a standard 115V AC 15-amp grounded receptacle. See FIG. 7. FIG.
Page 9 ASSEMBLY INSTRUCTIONS (Continued) CHARGING THE UNINTERUPTABLE POWER SUPPLY The Uninteruptable Power Supply (UPS) comes from the supplier with no charge. When the machine is ready for operation, plug it in and turn on the UPS. The battery must charge for a minimum of 24 hours. For UPS functions, refer to the separate manual supplied with the grinder.
Page 10 ASSEMBLY INSTRUCTIONS (Continued) Actuator Mounting INSTALL THE OPTIONAL Screw (under the rubber CARRIAGE BELLOWS (if ordered) splash guard) Optional carriage bellows are available to keep excess grindings, dirt, etc. out of the carriage assembly. To install the two bellows: 1. Remove the left and right outside leg panels. Actuator Bar Assembly 2.
Page 11: Warnings
ASSEMBLY INSTRUCTIONS (Continued) INSTALL THE COOLANT TANK Assemble the Coolant Tank as outlined in the instructions (Part No. 3708785) in the coolant tank carton. Center the Tank under the Grinder. Install the 1" I.D. drain tubing over the barbed end of the plastic adapter on the coolant tray drain.
Page 12: Assembly
ASSEMBLY INSTRUCTIONS (Continued) CHECK THE CARRIAGE TRAVERSE Move the proximity switch assemblies to about 12" [300 mm] from the ends of the machine, and tighten their knobs. Visually check that the grinding head will be able to traverse to both sides of the machine without contacting any components.
Page 13: Maintenance
MAINTENANCE DAILY MAINTENANCE IS SPECIFIED ON PAGE 6 OF Adjustable Electro- THE OPERATOR'S MANUAL, AND IS TO BE PER- magnet Bellows FORMED BY THE OPERATOR. LISTED BELOW ARE PERIODIC MAINTENANCE ITEMS TO BE PERFORMED BY YOUR COMPANY'S MAINTENANCE DEPARTMENT: 1. Lift the bellows located on adjustable electromaget (see FIG 14a) and wipe off the bearing rail monthly.
Page 14 MAINTENANCE (Continued) LUBRICATION Actuator and Linear Bearings Do the following every six months (or more often if the linear actuator seals are squeaking): 1. Thoroughly clean the carriage rails, drive shaft, and shaft seals. Wipe the shafts and seals thoroughly with a clean rag.
Page 15: Maintenance
MAINTENANCE (Continued) CLEANING AND MAINTENANCE GUIDELINES FOR POLYCARBONATE WINDOWS Cleaning Instructions DO NOT USE GASOLINE Adherence to regular and proper cleaning procedures is recommended to preserve appearance and performance. Washing to Minimize Scratching Wash polycarbonate windows with a mild dish washing liquid detergent and lukewarm water, using a clean soft sponge or a soft cloth.
Page 16: Adjustments
ADJUSTMENTS TO REPLACE THE LINEAR ACTUATOR BEARINGS Actuator Mounting Screw (under the rubber NOTE: Do not remove the linear actuator from the drive splash guard) shaft. Only remove the bearings from the actuator block. 1. Crank the horizontal handwheel until the carriage is Actuator Bar Assembly all the way forward (toward the operator position).
Page 17 ADJUSTMENTS (Continued) TO REPLACE THE LINEAR ACTUATOR BEARINGS Hold the drive shaft from rotating while you check the pulling force. 8. Slide the carriage over the actuator, and line up the hole in the carriage with the tapped hole in the top of the actuator block.
Page 18 ADJUSTMENT (Continued) TO REPLACE THE CARRIAGE LINEAR BEARINGS NOTE: Set a small bench or table near the center front of the machine for use in the following procedure. 1. Remove the optional carriage bellows (if used) from the carriage. Remove the actuator release lever from the linear actuator.
Page 19 ADJUSTMENTS (Continued) TO REPLACE THE CARRIAGE LINEAR BEARINGS 7. Attach the three linear bearing pillow blocks and wiper brack- ets loosely to the bottom of the carriage, with their tension Rear Pillow Blocks adjustment screws (FIG. 23) facing outward. 8. Clean the carriage rails. NOTE: The two rails are interchangeable and are also reversible (end-for-end).
Page 20 ADJUSTMENT (Continued) TO ALIGN THE MOTOR SHAFT AND DRIVE SHAFT There must be 0.12 to 0.50 in. (3.0 to 12.7 mm) end clearance between the traverse motor output shaft and the drive shaft, inside the flexible coupling (FIG.27). To prevent drive shaft "whipping" at higher traverse speeds, the two shafts must be aligned so they are concentric within .010 in.
Page 21 ADJUSTMENT (Continued) TO ADJUST THE PROXIMITY SWITCHES For the proximity switches to work properly and reverse the direction of the carriage at each end of a traverse, a distance of 3/16 in. +/- 1/32 [4.75 mm +/ - 0.75] must be maintained between the top of the switch and the actuator bracket on the bottom of the Proximity carriage.
Page 22 ADJUSTMENTS (Continued) TO ELIMINATE INFEED HANDWHEEL BACKLASH If there is backlash in the Grinder Head Infeed handwheel (FIG. 35A), there are two adjustment points on each to check: 1. Washers behind the handwheel: A. Remove the setscrew holding the calibration ring to the handwheel.Go through the set screw hole and loosen the setscrew holding the handwheel to the shaft (about one-half turn).
Page 23: Adjustments
ADJUSTMENTS (Continued) POTENTIOMETER ADJUSTMENTS TRAVERSE DRIVE CONTROL (TDC) Min. Speed--Factory set at full (CCW) 8:30. Do not change this setting. (Right Traverse) Forward Torque--Factory set at full (CW) 4:30. Do not change this setting. (Left Traverse) Reverse Torque--Factory set at full (CW) 4:30. Do not change this setting. IR COMP--Factory set to 9:00.
Page 24: Troubleshooting
TROUBLESHOOTING ELECTRICAL MAIN POWER --ELECTRICAL-- --PROBLEM-- --POSSIBLE CAUSE-- --REMEDY-- --REASON-- A--Grinding Motor Switch (GMS) Grinding motor Turn switch on. do not function is not on. (no apparent B--Main power source breaker power to Reset breaker, turn switch on is tripped, power source switch machine).
Page 25 TROUBLESHOOTING (Continued) TRAVERSING --ELECTRICAL-- --PROBLEM-- --POSSIBLE CAUSE-- --REMEDY-- --REASON-- Reset dwell time on traverse The dwell time on the traverse Insufficient hesitation control board as required; one at carriage stops drive control not set properly. increment increases dwell time prior to reversing by 1/2 second.
Page 26 TROUBLESHOOTING (Continued) TRAVERSING --PROBLEM-- --POSSIBLE CAUSE-- --REMEDY-- --REASON-- Traverse motor A--Traverse Motor Switch is Turn on motor switch. does not work. not on. B--Blown fuse. Replace the 3 amp slo-blo fuse Extremely heavy grinding on the control board and cuts cause excessive decrease stock removal rate.
Page 27 TROUBLESHOOTING (Continued) TRAVERSING --PROBLEM-- --POSSIBLE CAUSE-- --REMEDY-- --REASON-- Wrong wire hookup effects Traverse speed A--Wiring hookup to potentiom- Check potentiometer wiring for traverse control. Reversing red control goes at eter is improper. (If compo- proper hookup. See that and orange wires to one speed only.
Page 28 TROUBLESHOOTING (Continued) TRAVERSING --PROBLEM-- --POSSIBLE CAUSE-- --REMEDY-- --REASON-- --MECHANICAL-- Carriage A--Oil on carriage drive shaft. Wipe oil completely from shaft. Driving torque is lost traversing (varies Spray down with WD-40 and because the oil is speed) while wipe off. decreasing friction for grinding.
Page 29 TROUBLESHOOTING (Continued) TRAVERSING --PROBLEM-- --POSSIBLE CAUSE-- --REMEDY-- --REASON-- Actuator drive A--Bearing shaft support Loosen the screws that retain Misalignment of shaft shaft whipping blocks are not perpendicular to the shaft support blocks on support blocks to carriage excessively at carriage shaft. each end of the actuator shaft.
Page 30 TROUBLESHOOTING (Continued) ELECTROMAGNETS --PROBLEM-- --REMEDY-- --REASON-- --POSSIBLE CAUSE-- Electromagnets A--Make certain elecromagnet Switch must be on for If switch is off, turn on the switch. do not function. switch is on. electromagnets to work. With switch on, electromagnets work, troubleshooting done. With switch on electromagnets do not work, Go to B.
Page 31 TROUBLESHOOTING (Continued) TRAVERSING --PROBLEM-- --POSSIBLE CAUSE-- --REMEDY-- --REASON-- Electromagnets H--Verify 12 VDC at the Check for 12 VDC at terminals Power must pass to the do not function. electromagnet connections at 58MGTBL and 59MGTRD, electromagnet cords. (Continued) the bottom of the electrical there is one set of terminals for box.
Page 32 TROUBLESHOOTING BEDKNIFE GRINDING --PROBLEM-- --POSSIBLE CAUSE-- --REMEDY-- --REASON-- Top face of A--Grinding wheel loading up Dress the wheel prescribed in A loaded wheel creates bedknife is with grinding grit. the Operators Manual. undue pressure on the ground in a surface being ground. Both concave shape ends of bedknife move (low in the...
Page 33: Troubleshooting
TROUBLESHOOTING (Continued) BEDKNIFE GRINDING --PROBLEM-- --POSSIBLE CAUSE-- --REMEDY-- --REASON-- Top face of A--Grinding wheel loading up Dress the wheel prescribed in A loaded wheel creates bedknife is with grinding grit. the Operators Manual. undue pressure on the ground in a surface being ground.
Page 34 TROUBLESHOOTING (Continued) BEDKNIFE GRINDING --PROBLEM-- --POSSIBLE CAUSE-- --REMEDY-- --REASON-- The top face of A--Grinding wheel rim is not The wheel rim must extend When the rim doesn't the bedknife is completely over the top face over the bedknife top face by extend over the top face, it ground unevenly being ground.
Page 35 TROUBLESHOOTING (Continued) BEDKNIFE GRINDING --PROBLEM-- --POSSIBLE CAUSE-- --REMEDY-- --REASON-- The top face of A--Coolant not directed onto Direct coolant into the grinding When the front face of the the bedknife the bedknife and grinding wheel, at the point of the grind. bedknife gets too hot, the shows burn wheel.
Page 36 ELECTRIC SCHEMATIC 67095233...
Page 37: Control Box
CONTROL BOX Traverse Board Transformer for Actuator Bridge Diode for Actuator Circuit Breaker for Actuator 2 Amp Fuse for Coolant Pump 12 Amp Fulse for Electromagnets Transformer for Electro Magnets 1 Amp Start Circuit Fuse Bridge Diode for Electomagnets Low Voltage Relay Mag Starter &...
Page 38: Parts List
PARTS LIST 6709534 MAIN BASE ASSEMBLY...
Page 39 6709062 Upper Tank Side Bracket 6709063 Rubber Trim 36" 6709071 Ferrule Handle 3707129 Guard Door Safety Switch 6709101 ACCU-Pro Decal 6709505 Water Tank Base Weldment 6709512 Left Hand Leg Frame Weldment 6709129 Door Plate 3708378 Foam Strip .25 Thick 6709131 Door Spring Bracket L.H.
Page 40 PARTS LIST (Continued) 6609529 GRINDING HEAD ASSEMBLY...
Page 41 DIAGRAM PART PART DIAGRAM PART PART NUMBER NUMBER DESCRIPTION NUMBER NUMBER DESCRIPTION 32.....3708103....Washer Conical 1....B190611....10 - 24 x 3/8 Socket Head Cap Screw 33.....3709705....Nylon Ball 2....B191213....10 - 24 x 3/4 Button Head Socket Cap Screw 34.....3809047....Indicator Clear 3....B250816....1/4 -20 x 1/2 Button Head Socket Cap Screw 35.....6009023....Shaft Adjusting 4....B251216....1/4 - 20 x 3/4 Button Head Socket Cap Screw 36.....6059082....Ring Calibrated...
Page 42 PARTS LIST (Continued) 6709531 TRAVERSE & CARRIAGE ASSEMBLY...
Page 43 PARTS LIST (Continued) 6709531 TRAVERSE & CARRIAGE ASSEMBLY DIA. NO. PART NO. DESCRIPTION B191233 Phillip's Head Machine Screw 10-32 x 3/4 B250801 Hex Head Cap Screw 1/4-20 x 1/2 B251017 Round Head Machine Screw 1/4-20 x 5/8 B251611 Socket Head Cap Screw 1/4-20 x 1 B251811 Socket Head Cap Screw 1/4-20 x 1-1/8 B311001...
Page 44 PARTS LIST (Continued) 6709533 BEDKNIFE SUPPORT ASSEMBLY...
Page 45 PARTS LIST (Continued) 6709533 BEDKNIFE SUPPORT ASSEMBLY DESCRIPTION DIA. NO. PART NO. Socket Head Cap Screw 10-24 x 1/4 B190411 Flat Head Socket Cap Screw 10-24 x 3/8 B190605 Socket Head Cap Screw10-24 x 3/8 B191011 Socket Head Cap Screw 10-24 x 1" B191611 Socket Head Cap Screw 1/4-20 x 3/8 B250611...
Page 46 PARTS LIST (Continued) 6709536 CONTROL PANEL ASSEMBLY...
Page 47 PARTS LIST (Continued) 6709536 CONTROL PANEL ASSEMBLY DIAGRAM NO. PART NO. DESCRIPTION B130812 Phillip's Head Machine Screw 6-32 x 1/2 B161014 Phillip's Head Machine Screw 8-32 x 5/8 B190809 Round Head Machine Screw 10-24 x 1/2 B192013 Button Head Cap Screw 10-24 x 1.25 B193211 Socket Head Cap Screw 10-24 x 2.00 B371001...
Page 48 PARTS LIST (Continued) 6709536 ELECTRICAL ASSEMBLY...
Page 49: Parts List
PARTS LIST (Continued) 6709536 ELECTRICAL ASSEMBLY DIAGRAM NO. PART NO. DESCRIPTION 6009196 Cord Assembly Main Power W32 6109052 Receptacle Cor W41 3707547 15 Amp Circuit Breaker 6709084 Cord Assembly -Grind Motor W45 6009198 Traverse Motor Assembly W34 3707526 Bridge Diode - 25 AMP 6109053 Wire Assembly .25F/.25F W42 3707550...
Page 50 PARTS LIST (Continued) 3708784 COOLANT PUMP/TANK ASSEMBLY...
Page 51 PARTS LIST (Continued) 3708784 COOLANT PUMP/TANK ASSEMBLY DIAGRAM PART DESCRIPTION NUMBER NUMBER 1 ........... 3709642 ....Swivel Nozzle 2 ........... 3679116 ....Connector Shut - Off Valve 3 ........... K190001 ....#10 Flat Washer 4 ........... B191611 ....10-24 x 1 Socket Head Cap Screw 5 ...........