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National Flooring Equipment HELIX Service Manual

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HELIX GRINDER
SERVICE MANUAL
Read Manual Before Servicing Machine
403315 Rev J

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Summary of Contents for National Flooring Equipment HELIX

  • Page 1 HELIX GRINDER SERVICE MANUAL Read Manual Before Servicing Machine 403315 Rev J...

  • Page 3: Table Of Contents

    Table of Contents Table of Contents ................................3 Features and Specifications ............................4 Safety ....................................5 General Rules for Safe Operation ......................... 5 Grinder Safety Guidelines ............................6 Recommended Electrical Practices ........................7 Troubleshooting Guide ..............................9 Maintenance ................................. 10 General Maintenance ............................

  • Page 4: Features And Specifications

    Motor RPM Tooling Assembly Amps Region Serial Number Input Power (High/Low (Full Load) Speed) (High/Low Speed) HELIX-10XXXX 120V / 60 Hz 3339 / 1878 304 / 171 Domestic HELIX-12XXXX 120V / 60 Hz 3339 / 1878 304 / 171 (North America)

  • Page 5: Safety

    Read the manual carefully to learn equipment applications and limitations, as well as potential hazards associated with this type of equipment. Keep manual near machine at all times. If your manual is lost or damaged, contact National Flooring Equipment (NFE) for a replacement. Personal Maintenance &...

  • Page 6: Grinder Safety Guidelines

    Safety Safety GRINDER SAFETY GUIDELINES Before use, anyone operating this equipment must read and understand these safety instructions. Grinding Dust Collection Beware of hidden obtrusions. Use with appropriate dust collecting system. Watch out for hidden dangers and protrusions in flooring. Do not Do not operate machine designed for use with a dust collector use on largely uneven surfaces.

  • Page 7: Recommended Electrical Practices

    Safety RECOMMENDED ELECTRICAL PRACTICES CAUTION: ALWAYS FOLLOW APPLICABLE ELECTRICAL CODES, STANDARDS AND/OR REGULATIONS. CONSULT YOUR LOCAL ELECTRICAL AUTHORITY OR A LICENSED ELECTRICIAN BEFORE ATTEMPTING TO MODIFY AN ELECTRICAL INSTALLATION. ENSURE THAT CIRCUIT AND GROUND FAULT PROTECTION DEVICES AND ALL OTHER ELECTRICAL SAFETY EQUIPMENT ARE FUNCTIONING PROPERLY.
  • Page 8 Safety RECOMMENDED ELECTRICAL PRACTICES—CONTINUED Single-Phase Equipment 100V Supply 20ft (6m) 40ft (12m) 60ft (20m) 80ft (25m) 120V Supply 25ft (7.5m) 50ft (15m) 75ft (25m) 100ft (30m) Length 230V Supply 50ft (15m) 100ft (30m) 150ft (45m) 200ft (60m) Max Amps Minimum Wire Size 16 AWG (1.5mm 16 AWG (1.5mm 14 AWG (2.5mm...

  • Page 9: Troubleshooting Guide

    Troubleshooting Guide Problem Solution Machine is hard to handle Change to a less aggressive tooling. Remove weights. Change handle position to gain better leverage. Debris is coming out from the bottom of the Check dust skirt to make sure it is mounted and secured properly. The bottom edge of the machine skirt should be touching the floor.

  • Page 10: Maintenance

    Maintenance WARNING: BEFORE STARTING REPAIR OR MAINTENANCE WORK, ALWAYS TURN OFF THE MACHINE, WAIT FOR STANDSTILL OF ALL DEVICES, PULL OUT THE MAIN PLUGS AND REMOVE THE SAFETY KEY TO SECURE THE MACHINE AGAINST UNINTENDED STARTUP. GENERAL MAINTENANCE A well-maintained machine is a productive machine. If not properly maintained, it could FIG.

  • Page 11: Replacing Satellite Bearing Assemblies

    Maintenance REPLACING SATELLITE BEARING ASSEMBLIES Follow Removing Tooling Assembly procedure to gain access to the satellite bear- ing assemblies. Remove the retaining ring using retaining ring pliers. Remove the bearing assembly from the base plate (Figure 5). Insert the new bearing assembly (P/N 404081) into the base plate. Install the retaining ring using retaining ring pliers (Figures 5 and 6).

  • Page 12: Replacing Motor Brushes

    Maintenance REPLACING MOTOR BRUSHES Next to the dual speed toggle on the motor is a light (Figure 8). If the light is on, the brushes need to be replaced. To replace brushes, complete the following steps: Disconnect machine from power; remove the safety key. Remove (3) bolts on cover (Figure 9);...

  • Page 13: Light

    Maintenance LIGHT If the light won’t turn on, ensure that the plug is connected at the bottom of the control box (Figure 12). ACCESSING ELECTRICAL COMPONENTS Disconnect machine from power; remove the safety key. Unplug light located under the cover (Figure 11). FIG.

  • Page 14: Parts List And Diagrams

    Parts List and Diagrams OVERALL MACHINE SKIRT PARTS MOTOR PARTS UPPER HANDLE PARTS LOWER HANDLE PARTS BASE PARTS TOOLING ASSEMBLY PARTS...

  • Page 15: Base Assembly

    Parts List and Diagrams BASE ASSEMBLY ITEM PART NUMBER 402798-SV Shroud, Grinder, 15 inch, Imperial 402756 Seal, Felt, 1.5 x .078" 402764 Pin, Weight, Hold Down 403004 Weight, Grinder, Imperial Gearbox 403169 Weight, Ring, 12.5 x 3/4 Screw, Flanged Socket Head Cap, 403171 M6-1.0 x 20mm 73303...

  • Page 16: 402757 Tooling Assembly

    Parts List and Diagrams 402757 TOOLING ASSEMBLY ITEM PART DESCRIPTION QTY. NUMBER 402781 Coupler, Morflex, 3.625" 402796 Screw, Socket Head Cap, M6-1.0 x 35mm 403978 Clutch, 5", Nylon 403979 Plate, Tooling, Clutch 403994 Insert, Bearing, Flange, Tooling Plate 404019 Clip, Retaining, Axial, 1.375 404021 Assembly, Satellite, Magnetic, 5"...

  • Page 17: 403231 Skirt Assembly

    Parts List and Diagrams 403231 SKIRT ASSEMBLY ITEM PART DESCRIPTION QTY. NUMBER 401516 Nut, M6-1.0 Nylock 401653 Screw, Socket Head Cap, M4-0.7 x 12 402705 Skirt, Floating, Edge Grinding, 16 inch 402755 Shield, Dust, Edge, Grinding 403075 Screw, Pan Head Machine, M4X0.7 - 10mm 403077 Screw, Pan Head Machine, M6X1.0 - 12mm 403168...

  • Page 18: Motor

    Parts List and Diagrams MOTOR HELIX-11XXXX HELIX-10XXXX HELIX-13XXXX ITEM HELIX-12XXXX HELIX-28XXXX HELIX- 20XXXX HELIX-15XXXX DESCRIPTION QTY. HELIX-23XXXX HELIX-26XXXX HELIX-27XXXX 403152 403152 Assembly, Motor/Gearbox, 120 Volt 403811 Assembly, Motor/Gearbox, 100V, Japan Assembly, Motor/Gearbox. 230 volt 403902 403188 403188 Motor, Brushed, 120V, Integrated Gearbox, Lights and Switch...

  • Page 19: Lower Handle Assembly

    Parts List and Diagrams LOWER HANDLE ASSEMBLY HELIX-11XXXX HELIX-13XXXX HELIX-10XXXX HELIX-15XXXX ITEM HELIX-12XXXX HELIX-20XXXX DESCRIPTION QTY. HELIX-23XXXX HELIX-26XXXX HELIX-27XXXX HELIX-28XXXX 72873 72873 3/8 Cable Clamp Washer, Nylon, Mil-spec, 3/4 inch 402721 402721 ID x .03 inch thk Washer, M16 x 50mm OD, Clear...

  • Page 20: Upper Handle Assembly

    Parts List and Diagrams UPPER HANDLE ASSEMBLY CONTROL PANEL PARTS HELIX-11XXXX HELIX-10XXXX HELIX-13XXXX ITEM HELIX-12XXXX HELIX-28XXXX HELIX- 20XXXX HELIX-15XXXX DESCRIPTION QTY. HELIX-23XXXX HELIX-26XXXX HELIX-27XXXX 72873 72873 72873 72873 3/8 Cable Clamp 402722 402722 402722 402722 Spring, .656"OD x 3"L x .062"W Washer, Compression Retainer, 1/2"...

  • Page 21: Handle Assembly (International Only)

    403802 403802 Filter, Electrical, 250V 403115 403115 Nut, M3-0.5, Nylock Terminal, Insulated, 12-10 403809 403809 Gauge, Female, Quick Disconnect Terminal, Spade, 12-10 403150 403150 Gauge, Nylon, Piggy Back NOTE: HELIX-10XXXX, HELIX-12XXXX, HELIX-20XXXX, HELIX-23XXXX WILL NOT NEED THESE PARTS *NOT SHOWN...

  • Page 22: Control Panel

    Parts List and Diagrams CONTROL PANEL - 100/110/120V HELIX-10XXXX ITEM HELIX-12XXXX HELIX-28XXXX DESCRIPTION QTY. HELIX-20XXXX HELIX-23XXXX 402768 403800 Cover, Electric Box, Pivoting Handle 403879 403879 Contact, NC, Pushbutton, BF 403880 403880 Contact, NO, Pushbutton, BF 403881 403881 Block, LED Lamp, Green, 110VAC, BF...
  • Page 23 402774 Key, Safety Switch 403044 Wrap, Wrist, Safety 403185 Terminal, Ring, 12-10ga, #6 403828 Contactor, 230V, 50/60Hz, 12A, 3 Pole 403873 Harness, Wire, Helix, 2.17" Flange NOTE: WIRES ARE NOT SHOWN FOR 403873 *NOT SHOWN (WIRES FOR 403316 NOT SHOWN)

  • Page 24: Labels

    403086 403086 Label, Ground 403066 403066 Label, Control Panel 403831 403831 Label, Control Panel, International 403061 Label, CE, Helix, 120V, 60Hz 403904 Label, CE, Helix, 110V, 50Hz 403905-JA Label, CE, Helix, 100V, 50Hz, Japanese 403903 Label, CE, Helix, 230V, 50Hz...

  • Page 25: Wiring Diagrams

    Parts List and Diagrams WIRING DIAGRAM - 110/120V (HELIX-10XXXX, -12XXXX, -20XXXX, -23XXXX ONLY) HELIX – 110/120V WIRING DIAGRAM T-R5 CHASSIS 120V MAINS MOTOR T-F23 14-BLK T-F31 12-GRN 12-WHT 12-BLK JUMPER LIGHT 16-BLK WORK TERMINAL SWITCH LIGHT BLOCK T-F12 T-W12 T-F22...
  • Page 26 Parts List and Diagrams WIRING DIAGRAM - 230V (HELIX-11XXXX, -13XXXX, -15XXXX, -26XXXX, -27XXX ONLY) HELIX – 230V WIRING DIAGRAM 14-GRN T-R5 CHASSIS 230V MAINS MOTOR 14-WHT T-F23 2.5MM -GRN/YEL 14-BLK T-F13 12-GRN T-F1 T-FM1 2.5MM -BLU 12-WHT T-F20 T-F21 1 P3 2.5MM...
  • Page 27 Parts List and Diagrams WIRING DIAGRAM - 100V (HELIX-28XXXX ONLY) HELIX – 100V WIRING DIAGRAM T-R5 CHASSIS 100V MAINS MOTOR T-F23 2.5MM -GRN/YEL 14-BLK T-F31 12-GRN T-F1 T-FM1 2.5MM -BLU 12-WHT T-F20 T-F21 2.5MM -BRN 12-BLK T-F10 T-F11 2.5MM -GRN/YEL EMI FILTER 2.5MM...
  • Page 28 Parts List and Diagrams NOTES...

  • Page 29: Warranty

    Warranty National Flooring Equipment Inc. (referred to as “The Company”) warrants that each new unit manufactured by The Company to be free from defects in materials and workmanship in normal use and service for a period of twelve (12) months from date of shipment from The Company to the end user.
  • Page 32 9250 Xylon Avenue N • Minneapolis, MN 55445 • U.S.A. Toll-free 800-245-0267 • Phone 763-315-5300 • Fax 800-648-7124 • Fax 763-535-8255 Web Site: www.nationalequipment.com • E-Mail: info@nationalequipment.com...

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