Alpha VSP-120 User manual

Model No.: VSP-120
Alpha®Variable
Speed Wet Polisher
Instruction Manual
MANUAL
103 Bauer Drive, Oakland, NJ 07436 • 800-648-7229 • Fax: [phone]
www.alpha-tools.com
WARNING: To reduce the risk of injury, user must read and understand instruction manual!

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TABLE OF CONTENTS
VSP-120 Overview ............................................................................................ 3
Specifications ............................................................................................. 3
Accessories ................................................................................................ 4
Introduction........................................................................................................ 5
About the Symbols ..................................................................................... 5
General Safety Rules ........................................................................................ 6
Work Area................................................................................................... 6
Electrical Safety.......................................................................................... 6
Personal Safety .......................................................................................... 6
Tool Use and Care...................................................................................... 7
Service ....................................................................................................... 7
Specific Safety Rules.................................................................................. 8
Use Proper Extension Cords...................................................................... 9
Grounding Instructions ............................................................................... 9
Additional Precautions for using the VSP-120.......................................... 10
Laws and Regulations Of Noise Levels.....................................................11
VSP-120 Variable Speed Wet Polisher Operation........................................... 12
Main Connection ...................................................................................... 12
Switching On and Off................................................................................ 12
Ground Fault Circuit Interrupter (GFCI).................................................... 13
Testing In-line GFCI Unit .......................................................................... 14
Variable Speed Adjustment ...................................................................... 14
Speed Pot Feedback Sensor ................................................................... 15
Water Control Valve.................................................................................. 15
Side Handle Installation............................................................................ 16
Customizing Splash Guard....................................................................... 17
Splash Guard Installation ......................................................................... 18
Profiler and other approved Spindle Attachments .................................... 19
Water-Feed Attachment............................................................................ 19
Maintenance ................................................................................................... 20
Daily ......................................................................................................... 20
Periodic .................................................................................................... 20
Bearings and gears .................................................................................. 21
Carbon Brush Replacement .................................................................... 21
Rear Cover Removal................................................................................ 22
Alpha®VSP-120 Schematic ............................................................................ 27
Alpha®VSP-120 Parts List .............................................................................. 28
Services and Warranty Information ................................................................. 30
Loaner Program ....................................................................................... 30
Need More Information ............................................................................ 30
Alpha®Tool Repair Service....................................................................... 31
Warranty ................................................................................................... 31
Appendix A...........................................................................................................i

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VSP-120 OVERVIEW
Speed Adjuster
Power Switch
In-line GFCI
Garden Hose Adapter
Water Line
Center Water Feed
“C” Handle
Water Valve
SPECIFICATIONS
Working Power Supply................................................... Single-phase AC, 50/60 Hz
Voltage ........................................................................... 120V
Plug Type ....................................................................... A (120V)
Amperage....................................................................... 7A
Wattage .......................................................................... 800W
Motor .............................................................................. Single-phase
No Load.......................................................................... 500~2800 RPM
Polishing Disc Size......................................................... 4”
Cord................................................................................ 10’ single-phase cable
Weight .......................................................................... 7.3 Lbs
Machine/Cord/GFCI/Water-Line/
Splash Guard
Splash Guard
Band Clamp
Figure-1

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ACCESSORIES
COMPONENTS:
1. Side Handle (Part No. 210074)
2. Wrench (Part No. 210073)
3. Band Clamp (Part No. 210088)
4. Splash Guard (Part No. 210089)
5. Spare Set of Carbon Brushes (Part No. 210048)
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Figure-2

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INTRODUCTION
Thank you for purchasing the Alpha®Wet Polisher. Please read this instruction manual
thoroughly to ensure safety and correct use of the polisher. Keep this manual in a place
where operators can access it easily whenever necessary.
ABOUT THE SYMBOLS
According to the hazard level, all safety notes in this manual are classified into “DANGER”,
“WARNING”, and “CAUTION”.
DANGER! Death or serious personal injury is imminent when handling this
polisher incorrectly.
WARNING! There is a possibility of death or serious personal injury when
handling this polisher incorrectly.
CAUTION! There is a possibility of personal injury or property damage when
handling this polisher incorrectly.
NOTE: In some situations, failing to observe WARNING notes could result in death or
serious personal injury. Be sure to read and observe the safety notes to ensure
safety and correct use of the polisher.
ELECTRICAL SYMBOLS
The following show the symbols used for tool.
VVolts
A Amperes
Hz Hertz
~ or a.c. Alternating Current
n0 No load speed
…/min Revolution or reciprocation per minute
kg Kilograms
Protective Earth

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CAUTION!
The following are important notes for products, operation, and maintenance applicable to
this polisher.
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 flammable liquids, gases, or dust. Power tools may create sparks which may
ignite the dust or fumes.
Keep bystanders, children, and visitors away while operating a power tool.
Distractions can cause you to lose control.
ELECTRICAL SAFETY
Grounded tools must be plugged into an outlet properly installed and grounded
in accordance with all codes and ordinances. Never remove the grounding prong
or modify the plug in any way. Do not use any adaptor plugs. Check with a qualified
electrician if you are in doubt as to whether the outlet is properly grounded. If the tools
should electrically malfunction or break down grounding provides a low resistance path
to carry electricity away from the user.
Avoid body contact with grounded surfaces, such as pipes, radiators, ranges, and
refrigerators. There is an increased risk of electric shock if your body is grounded.
Don’t expose power tools to rain or wet conditions. Water entering a power tool
will increase the risk of electric shock.
Do not abuse the cord. Never use the cord to carry the tools or pull the plug from an
outlet. Keep cord away from heat, oil, sharp edges, or moving parts. Replace damaged
cords immediately. Damaged cords increase the risk of electric shock.
When operating a power tool outside, use an outdoor extension cord marked
“W-A” or “W”. These cords are rated for outdoor use and reduce the risk of electric
shock.
PERSONAL SAFETY
Stay alert, watch what you are doing and use common sense when operating
a power tool. Do not use tool while tired or under the influence of drugs, alcohol, or
medication. A moment of inattention while operating power tools may result in seri-
ous personal injury.
Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your
hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair
can be caught in moving parts or drawn into air vents.
Avoid accidental starting. Be sure switch is off before plugging in. Carrying tools with
your finger on the switch or plugging in tools that have the switch on, invites accidents.
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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. Do not use on a
ladder or unstable support.
Use safety equipment. Always wear eye protection. Dust mask, nonskid safety
shoes, hard hat, or hearing protection must be used for appropriate conditions.
TOOL USE AND CARE
Use clamps or other practical way to secure and support the workpiece to a
stable platform. Holding the work by hand or against your body is unstable and may
lead to loss of control.
Do not force tool, use the correct tool for your application. The correct tool will do
the job better and safer at the rate for which it is designed.
Do not use tool if switch does not turn it on or off. Any tool that cannot be controlled
with the switch is dangerous and must be repaired.
Disconnect the plug from power source before making any adjustments, chang-
ing accessories, or storing the tool. Such preventive safety measures reduce the
risk of starting the tool accidentally.
Store idle tools out of the reach of children and other untrained persons. Tools
are dangerous in the hands of untrained users.
Maintain tools with care. Keep tools sharp and clean for better and safer performance.
Follow instructions for lubricating and changing accessories. Inspect the electrical cord
periodically and if damaged, have it repaired by authorized service facility. Inspect
extension cords periodically and replace if damaged. Keep handles dry, clean and
free from oil and grease.
Check for damaged parts. Before using the tool each day, a guard or other part
that is damaged should be carefully checked to determine that it will operate properly
and perform its intended function. Check for alignment of moving parts, breakage of
parts, mounting, and any other conditions that may affect its operation. A guard or
other part that is damaged should be properly repaired or replaced by an authorized
service center unless otherwise indicated elsewhere in this instruction manual. Have
defective switches replaced by authorized service center. Do not use the tool if it
cannot be turned on and off by the switch.
Use only accessories that are recommended by the manufacturer for your model.
Accessories that may be suitable for one tool, may become hazardous when used
on another tool.
SERVICE
Tool service must be performed only by qualified repair personnel. Service or
maintenance performed by unqualified personnel could result in a risk of injury.
When servicing a tool, use only identical replacement parts. Follow instructions in
the Maintenance section of this manual. Use of unauthorized part or failure to follow
Maintenance Instructions may create a risk of electric shock or injury.
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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 fly 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. Contact with a “live”
wire will make exposed metal parts of the tool “live” and shock the operator.
Know your power tool. Read operator`s manual carefully. Learn its application and
limitations, as well as the specific potential hazards related to this tool. Following this
rule will reduce the risk of electric shock, fire, or serious injury.
Always wear safety glasses with side shields. Everyday eye-glasses have only
impact resistant lenses; they are NOT safety glasses.
Protect your lungs. Wear a face or dust mask if the operation is dusty.
Protect your hearing. Wear hearing protection during extended periods of opera-
tion.
Inspect tool cords periodically and if damaged, have repaired at your nearest Fac-
tory Service Center or other Authorized Service Organization. Constantly stay aware
of cord location.
Check damaged parts. Before further use of the tool, a guard or other part that is
damaged should be carefully checked to determine that it will operate properly and
perform its intended function. Check for alignment of moving parts, binding of moving
parts, breakage of parts, mounting, and any other conditions that may affect its opera-
tion, A guard or other part that is damaged should be properly repaired or replaced by
an authorized service center.
Do not abuse cord. Never carry the tool by the cord or yank it to disconnect it from
the receptacle. Keep cord away from heat, oil, and sharp edges. Following this rule
will reduce the risk of electric shock or fire.
Make sure your extension cord is in good condition. When using an extension
cord, be sure to use one heavy enough to carry the current your product will draw.
An undersized cord will cause a drop in line voltage resulting in loss of power and
overheating.
Inspect for and remove all foreign objects from workpiece before polishing.
Follow this rule will reduce the risk of serious personal injury.
Drugs, alcohol, medication, Do not operate tool while under the influence of
drugs, alcohol, or any medication. Follow this rule will reduce the risk of electric
shock, fire, or serious personal injury.
Keep hands away from polishing area. Follow this rule will reduce the risk of cuts,
scrapes, or serious personal injury.
Ground Fault Circuit Interrupter (GFCI) protection should be provided on the
circuit or outlet to be used for the tool. Receptacles are available having built-in
GFCI protection and may be used for this measure of safety.
Save these instruction. Refer to them frequently and use them to instruct others who
may use this tool. If you loan someone this tool, loan them these instructions.
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USE PROPER EXTENSION CORDS
Use only three-wire extension cords that have three-prong grounding-type plugs and
three-pole receptacles that accept the tool’s plug. Make sure your extension cord is in
good condition. Replace or repair damaged or worn cord immediately. When using an
extension cord, be sure to use one heavy enough to carry the current your product will
draw. An undersized cord will cause a drop in line voltage resulting in loss of power and
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.
Ampere Rating Total length of cord in feet (120V )
25ft 50ft 100ft
More Than Not More Than AWG
0 6 18 16 16
6 10 18 16 14
10 12 16 16 14
12 16 14 12 Not Recommended
GROUNDING INSTRUCTIONS
This tool should be grounded while in use to protect the operator from electric shock. The
tool is equipped with a three-conductor cord and three-prong grounding type plug to fit
the proper grounding type receptacle. The green (or green and yellow) conductor in the
cord is the grounding wire. Never connect the green (or green and yellow) wire to a live
terminal.

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ADDITIONAL PRECAUTIONS FOR USING THE VSP-120
In addition to the general safety notes described on the preceding pages, please read and
observe the following precautionary notes before using the polisher.
DANGER!
1. Check the working voltage.
Be sure the voltage available at power outlet matches specified voltage on the name-
plate. If the polisher is used with higher voltage than specified, the motor will burnout.
Any attempts to do so may damage the polisher or cause an accident or injury.
2. Inspect all polishing discs.
Never use cracked, chipped or damaged polishing discs.
3. Hold the polisher tightly at start-up.
Failure to do so may cause an injury due to high impact at initial start up.
4. Stop using the polisher immediately when noticing any malfunctions or any
suspicious abnormal noises.
Turn the power switch OFF and contact your dealer or Alpha Professional Tools®for
repair.
5. Handle the polisher with care.
If you accidentally drop the polisher, do not use it until checking that it is not cracked,
deformed, or damaged in any way.
6. Do not pour water or any liquids onto or inside the polisher.
It may cause electric shocks.
7. Do not hold the polisher in a vice.
8. Do not touch any rotating parts.
Never touch the polishing disc of the polisher during operation with your hands.
9. Do not leave the disc while spinning on the bench, floor or surface of your
workpiece.
It may cause an accident or injury.
WARNING!
10. Attach the backer pad and polishing disc correctly by following the procedure
in this instruction manual.
Attaching the polishing discs incorrectly may cause an accident.