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Summary of Contents for Alpha Professional Tools HSG-125
- Page 1 MANUAL ® Alpha High-Speed Angle Grinder Instruction Manual Part No: HSG-125 HSG-225 103 Bauer Drive, Oakland, NJ 07436 • 800-648-7229 • Fax: 800-286-0114 www.alpha-tools.com...
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Page 2: Table Of Contents
Carbon Brush Holder Removal ...............18 Carbon Brush Removal ...................19 Cleaning The Commutator ................20 Installing The Carbon Brushes ................20 Angle Grinder Schematic (HSG-125) ................21 Angle Grinder Parts List (HSG-125) ................22 Services and Warranty Information ................24 Loaner Program ......................24 Need More Information .....................24 Warranty ........................24 ®... -
Page 3: High-Speed Angle Grinder Overview
HIGH-SPEED ANGLE GRINDER OVERVIEW Spindle Locking Pin Direction of Power Switch Rotation Arrow Side Handle Locking Flange Protection Guard Inside Flange w/ Clamp Screw Figure-1 SPECIFICATIONS Power Supply ............Single-Phase AC, 50 / 60 Hz Rating .................... 115 / 230 Volts Amperage .................... -
Page 4: Accessories
ACCESSORIES (*Available in the 115V and 230V) Figure-2 (**Only available in the 115V) COMPONENTS: Protective Cover w/ Clamp Screw (Part No. 130653) Side Handle (Part No. 130433) Inside Flange and Locking Flange Set with 7/8” Arbor (Part No. 136038 & 136039)* Pin spanner Wrench 34 mm (Part No. -
Page 5: Introduction
INTRODUCTION ® Thank you for purchasing the Alpha High-Speed Angle Grinder. Please read this instruc- tion manual thoroughly to ensure safety and correct use of this tool. Keep this manual in a place where operators can access it easily whenever necessary. -
Page 6: General Safety Rules
CAUTION! The following are important notes for products, operation, and maintenance applicable to this High-Speed Angle Grinder. GENERAL SAFETY RULES WORK AREA • Keep your work area clean and well lit. Cluttered benches and dark areas invite accidents. • Do not operate power tools in explosive atmospheres, such as in the presence of fl... -
Page 7: Service
• Remove adjusting keys or wrenches before turning the tool on. A wrench or a key that is left attached to a rotating part of the tool may result in personal injury. • Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the tool in unexpected situations. -
Page 8: Specifi C Safety Rules
SPECIFIC SAFETY RULES • Accessories must be rated for at least the speed recommended on the tool warning label. Wheels and other accessories running over rated speed can fl y apart and cause injury. • Hold tool by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. -
Page 9: Additional Precautions For Using The High-Speed Angle Grinder
overheating. Below table shows the correct size to use depending on cord length and nameplate ampere rating. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the cord. Total length of cord in feet (115V ) Ampere Rating 25ft 50ft... -
Page 10: How To Grind
• Check grinding tools before use. The grinding wheel must be properly mounted and turn freely. Perform a test run for at least 30 seconds without any load. Do not use damaged, out of round or vibrating grinding tools. • Immediately switch off the machine in case of considerable vibrations or if other malfunctions occur. -
Page 11: High-Speed Angle Grinder Operation
action may decrease the rotation speed which reduces the effi ciency of the grinder. Hold the tool with both hands while starting; the torque from the motor will cause the tool to jerk. When the grinding wheel fi rst comes into contact with the work surface or when the wheel is new, make contact slowly. -
Page 12: Before Use
Switching off: OFF POSITION To unlock, depress the back of the sliding switch. The switch will automatically move back as shown in Figure 4. Figure-4 BEFORE USE DANGER! Before using the machine, check the following items. In particular, check items 1 to 5 before plugging the power supply cord into the power outlet. -
Page 13: About Double Insulation
WARNING! 1. Before turning the switch ON, make sure the rotating parts are not touching anything. If the switch is turned ON while they are in contact with anything else, the wheel may get damaged and may cause injuries. 2. When a new wheel is attached and the switch is turned ON, keep your body well away from the exposed sides of the wheel for a moment until the machine reaches its full speed. -
Page 14: Using The Tool
USING THE TOOL PROTECTIVE COVER INSTALLATION CAUTION! The protective cover should be used to prevent the dust and fl ying debris from hitting the operator or from going inside the tool. Failure to do so can shorten the life of the tool and void the limited warranty. -
Page 15: Assembling Spindle Attachments
® Note: The Alpha High-Speed Angle Grinder has a 5/8”-11 spindle thread . It comes with two Inside Flange and Locking Flange sets: 20mm Arbor for 4” discs and 7/8” Arbor for 4-1/2”... -
Page 16: Disassembling Spindle Attachments
While depressing the spindle button, rotate the spindle until the spindle lock button is inserted into the gear, thus locking the spindle in a fi xed position. Figure-12 With the spindle locked in place, turn the locking fl ange clockwise until hand-tight. Figure-13 Use the 34mm pin spanner wrench to secure tightly. -
Page 17: Checking And Replacing The Carbon Brushes
CHECKING AND REPLACING THE CARBON BRUSHES In order to keep the tool running correctly, you need to check the carbon brushes after every one hundred hours of use. Carbon brushes wear out over time based on the grinder’s usage. If a carbon brush is worn out, it may cause the motor to malfunction or fail to run. -
Page 18: Carbon Brush Holder Removal
Power Wire Carbon Brush Carbon Brush Assembly Parts Motor Housing Coil Spring Figure-18 Carbon Brush Holder CARBON BRUSH HOLDER REMOVAL Disconnect the power wire from carbon brush holder. Note: Each grinder has 2 carbon brushes located on opposite sides of each other. Figure-19 Remove the carbon brush holder from the motor housing by pulling the holder out with... -
Page 19: Carbon Brush Removal
NOTE: Carbon brushes sometime wear at different rates; however, both carbon brushes should be replaced at the same time. WARNING! Replacing the carbon brushes in this unit with non-Alpha ® parts could damage the unit, and will void the warranty. -
Page 20: Cleaning The Commutator
Remove the old carbon brush and disconnect the wire terminal. If the inside of the holder is fi lled with dust, clean it before installing the new carbon brush. Upon instal- lation of the new carbon brush, make sure the twisted wire is in the slot and behind wire terminals on the holder (as in Figure 22 right photo). -
Page 21: Angle Grinder Schematic (Hsg-125)
® ALPHA HIGH-SPEED ANGLE GRINDER SCHEMATIC (HSG-125) -
Page 22: Angle Grinder Parts List (Hsg-125)
® ALPHA HIGH-SPEED ANGLE GRINDER PARTS LIST (HSG-125) DRAWING NO. PART NO. DESCRIPTION PIECES 130391 O Ring 16×2 130390 Lock 130389 Spring 130388 Screw M4×7 130384 Gear Box Assembly 130458 Needle Bearing HK0709F (7×11×9) 130450 Snap Ring 13.5×1.2 130426 Lock Flange... - Page 23 ® ALPHA HIGH-SPEED ANGLE GRINDER PARTS LIST (HSG-125) DRAWING NO. PART NO. DESCRIPTION PIECES 136044 Armature Assembly 130407 Rear Motor Housing (Blue) 130376 Insulation Disc 130657 Condenser Assembly 130381 Ball Bearing 607-2Z (7×19×6) 130375 Bearing Sleeve 130027 Self-tapping Screw 3.9 X9.5...
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Page 24: Services And Warranty Information
LOANER PROGRAM ® Loaner tools can be issued to temporarily replace a tool that is being returned to Alpha for repair. If more than one tool is being returned for repair, the number of loaner tools provided will be based on availability. -
Page 25: Alpha ® Tool Repair Service
® ALPHA TOOL REPAIR SERVICE For more information concerning Alpha ® tool repair service, please contact the ® Alpha regional repair centers listed below: ® COMPANY HEADQUARTERS: Alpha Professional Tools 103 Bauer Drive Oakland, NJ 07436 Hours of Operation: 8:30 a.m. – 5:00 p.m. EST... -
Page 26: Ec Declaration Of Conformity
EC DECLARATION OF CONFORMITY ® Name of Manufacturer: Alpha Professional Tools Address of Manufacturer: 103 Bauer Drive Oakland, NJ 07436 Herewith declares that: ELECTRIC HAND TOOL: “High-Speed Angle Grinder” ® Make: Alpha Professional Tools Type: HSG-125/HSG-225 -Does comply with the provisions of the Low Voltage Directive 73/23EEC amended by 93/68 EEC and Machinery Directive 98/37/EC. - Page 27 Telephone: ___________________________________________________ Purchase Date: _______________________________________________ Dealer’s Name: _________________________________ Note: Serial & Model Number must be included for proper registration. (800) 648-7229 Register online at: www.alpha-tools.com/productregistration.aspx Mail or Fax to: Alpha Professional Tools ® 103 Bauer Drive, Oakland, NJ 07436 Fax: 800-286-0114...
- Page 28 103 Bauer Drive, Oakland, NJ 07436 • 800-648-7229 • Fax: 800-286-0114 www.alpha-tools.com 11/2008 Copyright © 2008 Alpha Professional Tools. All rights reserved.
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