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National Flooring Equipment PANTHER 8274 Instruction Manual

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#8274 & #9274 PANTHER
®
PLANETARY GRINDERS
INSTRUCTION MANUAL
Read Manual Before Operating Machine
#9274
#8274
National
Flooring Equipment, Inc.
9250 X
A
N
• M
, MN 55445 • U.S.A.
YLON
VENUE
ORTH
INNEAPOLIS
800-245-0267 • 763-535-8206 • F
763-535-8255 • F
800-648-7124
AX
AX
W
S
: www.nationalequipment.com • E-M
: info@nationalequipment.com
EB
ITE
AIL

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Summary of Contents for National Flooring Equipment PANTHER 8274

  • Page 1 #8274 & #9274 PANTHER ® PLANETARY GRINDERS INSTRUCTION MANUAL Read Manual Before Operating Machine #9274 #8274 National Flooring Equipment, Inc. 9250 X • M , MN 55445 • U.S.A. YLON VENUE ORTH INNEAPOLIS 800-245-0267 • 763-535-8206 • F 763-535-8255 • F 800-648-7124 : www.nationalequipment.com •...

  • Page 2: Table Of Contents

    8274/9274 TABLE OF CONTENTS Table of Contents ......................2 Rules for Safe Operation ..................3-7 A. Grounding ......................6 B. Extension Cords ....................7 Safety Instructions ......................8 Transportation ......................9 A. Load and Unloading..................9 Features/Specifications ....................10 Procedure ......................11-23 A. Handle Assembly ..................11 B. Vacuum Port ....................12 C.

  • Page 3: Rules For Safe Operation

    RULES FOR SAFE OPERATION READ AND SAVE ALL INSTRUCTIONS FOR FUTURE USE. Before use, be sure everyone operating this equipment reads and understands this manual as well as any labels packaged with or attached to the tool. 1. KNOW YOUR EQUIPMENT: Read this manual carefully to learn equipment applications and limitations as well as potential hazards associated with this type of equipment.
  • Page 4 RULES FOR SAFE OPERATION 18. DO NOT ABUSE CORD: Never unplug by yanking the cord from the outlet. Pull plug rather than cord to reduce the risk of damage. Keep the cord away from heat, oil, sharp objects, cutting edges and moving parts.
  • Page 5 RULES FOR SAFE OPERATION CHARACTERISTICS OF A DEFENSIVE OPERATOR • Education • Alert • Skills • Judgment • Common Sense • Recognizes the Hazards • Understands the Defense • Acts Correctly A GOOD OPERATOR IS A “DEFENSIVE” OPERATOR QUALITIES Education: Learns about the machine and the environment. Alert: Stays alert at all times never lets guard down.

  • Page 6: Grounding

    RULES FOR SAFE OPERATION GROUNDING Jobsite receptacles can vary. Check voltage at receptacles on the jobsite for the best voltage supply. 15 amp GFI outlets are not recommended. WARNING: Improperly connecting the grounding wire can result in the risk of electric shock. Check with a qualified electrician if you are in doubt as to whether the outlet is properly grounded.

  • Page 7: Extension Cords

    RULES FOR SAFE OPERATION EXTENSION CORDS WARNING: Electrical cords can be hazardous. Misuse can result in fire or death by electrical shock. Read carefully and follow all directions. Grounded tools require a three wire extension cord. Double insulated tools can use either a two or three wire extension cord.

  • Page 8: Safety Instructions

    8274/9274 SAFETY INSTRUCTIONS Read and understand operators instruction manual and instructional video before operating this equipment. WARNING: Know and understand before operation. Failure to do so could cause damage to equipment or bodily injury. • Only qualified, trained personnel should operate this unit. •...

  • Page 9: Transportation

    8274/9274 TRANSPORTATION LOAD AND UNLOAD • Always disconnect from power source before transporting. • Loosen Handle Securing Bolts to slide handle down to make machine easier to load. Retighten Bolts when handle is at the desired height. Page 9...

  • Page 10: Features/Specifications

    8274/9274 FEATURES/SPECIFICATIONS Adjustable Digital Read-Out Handle -Able to monitor load or RPM’s Angle Variable Speed 8274 18″ GRINDER Forward & Reverse Stock # 8274-1 8274-3 8274-4 Disc 18 Inch 18 Inch 18 Inch Size Vac Port 1½ Adjustable Single 3 Phase 3 Phase Motor Handle...

  • Page 11: Procedure

    8274/9274 PROCEDURE HANDLE ASSEMBLY WARNING: Handle must be engaged with both securing bolts. Failure to do so could cause serious injury. Handle adjusts to operator height. Loosen handle bolt and adjust handle (Figure A) to desired length and properly tighten bolt. Handle adjusts in both height and angle. Adjust handle grip to desired angle and firmly secure (Figure B).

  • Page 12: Vacuum Port

    8274/9274 PROCEDURE VACUUM PORT WARNING: Make sure you are using the proper style of vacuum for what you are grinding, scraping or sanding. Failure to do so could cause emissions of hazardous particulates or explosion due to fine dust (ie, wood sanding), which is flammable. Make sure the system you are using complies or exceeds OSHA recommended standard.

  • Page 13: Rubber Dust Guard

    8274/9274 PROCEDURE RUBBER DUST GUARD WARNING: NEVER operate machine without rubber guard in place covering plate completely. Failure to do so could cause serious injury. NEVER mount or readjust rubber guard with machine plugged in. Disconnect from power source before mounting or readjusting the rubber guard. ATTACHING Return machine to upright position.

  • Page 14: Belt

    8274/9274 PROCEDURE BELT BEFORE ANY MAINTENANCE, MAKE SURE MACHINE IS DISCONNECTED FROM POWER SOURCE TO ACCESS BELT •Remove the dust guard (page 13) •Remove the four bolts on top of the shroud cover (Figure A) •Pull back on the handle. The shroud should lift up and away from the grinding disc (Figure B). If it does not lift away, using a pry bar on each side, gently pry plate away from shroud - Do Not Force •Move machine back and off the plate (Figure C) Figure A...
  • Page 15 8274/9274 PROCEDURE BELT (CONTINUED) BELT TENSION NOTE: IF THE TENSION IN NOT PROPERLY TIGHTENED, THE TOOLING WILL SLIP AND NOT PERFORM AS DESIGNED 8274 •Loosen (do not remove) two of the three tension bracket bolts (Figure A) •Pivot the loosened bracket so it is evenly spaced with the center pulley (Figure B & C) •Apply pressure with a pry bar between the gear plate and tension bracket (Figure D), tighten both bolts •Recheck the spacing between the brackets and the center pulley (Figure B &...
  • Page 16 8274/9274 PROCEDURE BELT (CONTINUED) REMOVING BELT (8274 & 9274) •Loosen bolt or bolts on one of the tension brackets (Figure A & B) •Push in on tension bracket toward gear plate •Belt should be loose enough to slide off REPLACING BELT (8274 & 9274) •Loop belt around in pattern shown (Figure C &...

  • Page 17: Idler Bearing Replacement

    8274/9274 PROCEDURE IDLER BEARING REPLACEMENT •Remove belt, following belt removal instructions (page 14-16) •Remove snap ring (Figure A) •Remove idler bearings (Figure B) •Replace bearing •Replace snap ring, making sure ring is seated in the groove (Figure C) •Reinstall belt Figure A Figure B Figure C...

  • Page 18: Satellite Shaft Replacement

    8274/9274 PROCEDURE SATELLITE SHAFT REPLACEMENT •Remove pulley following pulley replacement instructions (page 17) •Push down on shaft (Figure A) •Lift up on plate and pull out shaft (Figure B) •Replace shaft (Figure C) •Replace Pulley (page 17) •Replace nut •Reinstall belt Figure A Figure B Figure C...

  • Page 19: Removing Top Gear Plate

    8274/9274 PROCEDURE REMOVING TOP GEAR PLATE •Remove belt, following belt removal instructions (page 14-16) •With a 4 millimeter allen wrench, remove the four gear plate cover screws (Figure A) •Remove gear plate (Figure B) •Remove both snap rings (Figure C) Figure A Figure B Figure C...

  • Page 20: Machine Start Up

    8274/9274 PROCEDURE MACHINE START UP PROCEDURE TO RUN MACHINE 1. Connect machine to power source. 2. Attach tether cord to both operator and machine (Figure A). Failure to do so could cause damage to property and/or machine. 3. Securely hold handle with one hand. Note: Applying light pressure downward on the handle tether cord takes pressure off the head of the machine.

  • Page 21: Controller Fault/Circuit Overload

    8274/9274 PROCEDURE CONTROLLER FAULT AND CIRCUIT OVERLOAD If grinder is faulting or circuits are blowing, the machine could be overloaded. This could be due to individual jobsite power sources and/or variances in jobsite floor surfaces. Always monitor load percent and make alterations to machine accordingly. Do not run load over 100%. Always be aware of the load percent while running the machine.

  • Page 22: Controller Codes

    8274/9274 PROCEDURE CONTROLLER CODES ONTROLLER EFAULT ODES 8274-1 & 9274-1 Trouble Possible Cause Remedy Overload Run Motor overloaded Remove weight, slow machine or change tooling Low Volts Acceleration Line volts too low at start a. Check cord length and gauge b.

  • Page 23: Troubleshooting

    TROUBLESHOOTING Trouble Possible Cause Remedy 1. Tooling plates fall off a.Replace screw (can use loktite) Page 22.1...

  • Page 24: Power Cord

    8274/9274 PROCEDURE POWER CORD Use a 12 gauge power cord not exceeding 50 feet in length. If there is loss of power, convert to a 10 gauge power cord. Do not allow the rotating plates to come into contact with the supply cord. Regularly examine the supply cord for damage, such as cracking or aging.

  • Page 25: Accessory Set-Up

    8274/9274 ACCESSORY SET-UP Must rotate clockwise towards the spring leg. If it rotated in reverse, damage could be caused to spring. Running a short dis- tance on a smooth floor to remove glaze from spring should be ok but not to be consistently run that way. CAUTION: DO NOT RUN TOOLING BACKWARD SMALL PLATE...
  • Page 26 8274/9274 ACCESSORY SET-UP PLATE ATTACHMENT Many choices of accessories are available for scraping, grinding, sanding, polishing, scrubbing etc. (Figure A). To expose the underside of the machine, tilt motor back to expose grinding head (Figure B). Figure B Figure A Attach selected accessories.

  • Page 27: Maintenance

    8274/9274 MAINTENANCE MAINTENANCE A well-maintained machine is a productive machine. If not properly maintained, it could be unsafe and could break down. A scheduled maintenance program should insure a long system life and a safe work environment. 1. Always wear eye protection. 2.

  • Page 28: Cleaning

    REPAIRS If your tool is damaged, call for a return/repair authorization number and return to: National Flooring Equipment, Inc. 9250 Xylon Avenue Minneapolis, MN 55445 (763) 535-8206 • 800-245-0267 •...
  • Page 29 Note: Number in parenthesis ( ) is the amount needed on each machine. Parts are sold individually. Be sure to order the number of parts needed.

  • Page 30: Complete Parts List

    8274 COMPLETE PARTS LIST #8274 PARTS LIST PART # DESCRIPTION 63-P31 3/4 LARGE WIRE CLAMP (2) 6254 EXTENSION CORD, 115 VOLT 6280-168 POWER CORD, 115 VOLT 7274-200 WHEEL (2) 8274-DECK COMPLETE ASSEMBLY & #8274-29 BELT 8274-7 DRIVE PLATE ASSEMBLY (NOT SHOWN) 8274-21 BALANCE WEIGHT, SMALL (2) (OLD STYLE) 8274-27...

  • Page 31: Complete Parts List

    8274 COMPLETE PARTS LIST #8274 PARTS LIST PART # DESCRIPTION 74102 1″ RETAINING RING (12) (NOT SHOWN) 74103 1⅞″ RETAINING RING (NOT SHOWN) 74433 10-32 X 1/2 PHILLIPS PAN HEAD SCREW (4) (NOT SHOWN) 74801 .010 X 2/8 ID SHIM WASHER (4) 75025 2″...
  • Page 32 9274 COMPLETE PARTS LIST #9274 PARTS LIST PART # DESCRIPTION 63-P31 3/4 LARGE WIRE CLAMP (2) 7274-200 WHEEL (2) 8274-7 8274 DRIVE PLATE ASSEMBLY (NOT SHOWN) 8274-46 8274 110 CONTROLLER BRACKET 8274-48 PULLEY SPACER (3) 8274-51 3/4 GEAR BOX SPACER (NOT SHOWN) 8247-52 GEAR BOX SLEEVE...
  • Page 33 9274 COMPLETE PARTS LIST #9274 PARTS (CONTINUED) PART # DESCRIPTION 73402 1/2-13 NYLON LOCK NUT (3) (NOT SHOWN) 73404 1/2 SAE FLAT WASHER (6) (NOT SHOWN) 73409 1/2-13 X 2½ HEXHEAD CAP SCREW (NOT SHOWN) 73417 1/2-13 X 4 HEXHEAD CAP SCREW (NOT SHOWN) 73421 1/2-13 X 3 HEXHEAD CAP SCREW (2)

  • Page 34: Part Numbers & Diagrams

    PART NUMBERS & DIAGRAMS 8274 & 9274 RINDERS UNLESS OTHERWISE NOTED HANDLE PARTS 80038 80024 8274-102 8274-46 9274-102 80026 80035 70820 80036 80039 80037 MOTOR GEAR BOX 72361 8274-201 72371W 9274-201 PART # DESCRIPTION PART # DESCRIPTION 8274-46 Controller Bracket 72371W 3 HP Motor (for 9274-1only) 8274-51...

  • Page 35: Part Numbers & Diagrams

    PART NUMBERS & DIAGRAMS 8274 EXTERNAL PARTS 63-P31 8274-29 80042 72802 72804 63-P31 80042 73225 6280-168 73204 80054 70301 80040 6254 9274-43 7274-200 8274-53 8274-7 9274-39 8274-45 PART # DESCRIPTION PART # DESCRIPTION 63-P31 3/4 Large WIre Clamp (2) 9274-43 Rear Handle Weldment 6254 Extension Cord, 115 Volt...
  • Page 36 PART NUMBERS & DIAGRAMS 8274/ 18 INCH DECK ASSEMBLY 8274-DECK 73237 73029 8274-69 8274-68 8274-64 8274-48 71232 71222 80043 80049 73208 80049 71202 8274-27 73904 8274-33 8274-68 A 8274-68 A SSEMBLY 8274-57 SSEMBLY 80066 REAKDOWN REAKDOWN 80067 80063 8274-60 74801 PART # DESCRIPTION 70703...
  • Page 37 PART NUMBERS & DIAGRAMS 9274 EXTERNAL PARTS 72585 72808 72807 9274-43 70301 80040 7274-200 9274-44 9274-39 9274-45 63-P31 80042 72802 72804 63-P31 73225 72586 73204 72802 PART # DESCRIPTION PART # DESCRIPTION 63-P31 3/4 Large Wire Clamp (2) 72802 1/2 90° Cord Connector 7274-200 Wheel (2) 72804...
  • Page 38 PART NUMBERS & DIAGRAMS 9274/ 22 INCH PLATE PARTS 9274-DECK 73237 73029 8274-69 8274-68 8274-64 8274-48 71232 71222 80043 80049 73208 80049 71202 8274-27 73904 8274-33 8274-68 A 8274-68 A SSEMBLY 8274-57 SSEMBLY 80066 REAKDOWN REAKDOWN 80067 80063 8274-60 74801 70703 PART # DESCRIPTION...

  • Page 39: Labels

    8274/9274 LABELS L104B L95B L95I L95J L175 L141 L266 L106 L33B L265 PART # DESCRIPTION PART # DESCRIPTION L33B Caution Moving Parts Label L106 Pinch Point Label (2) Disconnect Power Label L141 Made in USA/Flag Label L95B On/Off Switch Label L175 National Label - Small L95J...

  • Page 40: Magnetic Tooling

    8274/9274 MAGNETIC TOOLING Grind • Scrape • Prep • Profile • Polish • Sand METAL BOND Utilized for light, medium and aggressive concrete grinding and profiling as well as sealer & top coat removal • Can be used for both residential and industrial applications • Perfect for leveling concrete high spots and repairing imperfections as well as creating the perfect profile for accepting new coatings, epoxies or preparing concrete for polishing 9507-3.....3 Grit Metal Bond Half Segment Diamond...

  • Page 41: Magnetic Tooling

    8274/9274 MAGNETIC TOOLING Grind • Scrape • Prep • Profile • Polish • Sand POLISHING PADS Utilized for polishing concrete to various finishes and shines • Resin Bond • Available in escalating grits 9267-50.....Polishing Pad 9267-100....Polishing Pad 9267-200....Polishing Pad 9267-400....Polishing Pad 9267-800....Polishing Pad 9267-1500....Polishing Pad 9267-3000....Polishing Pad...
  • Page 42 8274/9274 MAGNETIC TOOLING Grind • Scrape • Prep • Profile • Polish • Sand SANDPAPER DISKS Utilized on interior hardwood surfaces, the National 8274 and 5274 grinding systems with 5" sandpaper disks, efficiently removes factory applied stains & finishes without the mess created by a traditional belt sander 9278-F......Sandpaper, Fine Grit 9278-M.......Sandpaper, Medium Grit...

  • Page 43: Traditional Tooling

    8274/9274 TRADITIONAL TOOLING Versatile Floating Action/9292 Floating Assembly Floating spring action allows tooling to follow the surface contour • Allows floating ability on all tooling, allowing tooling to work consistently • Provides profiling and polishing on uneven surfaces • Evens wear on grinding plugs • Eliminates scratches due to edge cut •...
  • Page 44 8274/9274 PLANETARY TOOLING Metal Bond Plugs Available in various grits for light coating/paint removal • Used for floor preparation prior to polishing #9260 Plate Shown #9250-6M Metal Bond Plug 6 Grit - soft bond for hard concrete w/Grinding Plugs #9250-14M Metal Bond Plug 14 Grit - soft bond for hard concrete...
  • Page 45 8274/9274 PLANETARY TOOLING Floating Polycrystalline Used to prep unlevel floors • Floating mechanisms allows diamonds to reach difficult low spots #9290 #9258 5" Plate (only)-for Grinding #9282 Floating Polycrystalline w/o Sacrificial Wear Bar #9289 Spring & Polycrystalline w/o Sacrificial Wear Bar #9290 Polycrystalline Spring Set (only) Floating Polycrystalline...

  • Page 46: Tooling Packages

    8274/9274 TOOLING PACKAGES #11120 CONCRETE PREPARATION FOR COATING (SOFT CONCRETE) PACKAGE 3 - #9265 5" Plate w/ Springs Attached 6 - #9251-14T 14 Grit Terrazzo Plug Diamond 6 - #9251-30T 30 Grit Terrazzo Plug Diamond 6 - #9251-70T 70 Grit Terrazzo Plug Diamond 3 - 73250 Plate Mounting Screw 18 - 74605...
  • Page 47 8274/9274 TOOLING PACKAGES #11210 COATING REMOVAL – AGGRESSIVE PACKAGE 3 - #9272 5" Plate for Carbides 6 - #7267 Carbide Holder 6 - #7268 Carbide Replacement Chip 12 - #73029 Carbide Holder Mounting Screw 3 - #73250 Plate Mounting Screw 6 - #73402 Carbide Chip Fastening Screw #11220 COATING REMOVAL...

  • Page 48: Guarantee

    A freight damage claim must be filed with the carrier by the purchaser, the shipper cannot file the freight claim. To obtain service contact National Flooring Equipment, Inc. toll free at 800-245-0267 for a repair authorization number. COD freight returns will not be accepted. Freight collect shipments will not be accepted.

  • Page 49: Return Sheet

    8274/9274 RETURN SHEET Company Name Contact Name Telephone Number Approximate Usage (hours) Problems Encountered Check One: Repair Do you wish to be contacted before repairing Return Contact National if a loaner is needed Return Authorization Number Date required, contact National Customer Number if known Purchased From...

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Panther 9274

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