Alpha Tool.Com.HK Limited Polisher VSP320 ver 1 User Manual

							Model No.:  VSP-320
Alpha® Variable
Speed Wet Polisher Instruction Manual
MANUAL
WARNING: To reduce the risk of injury, user must read and understand instruction manual!
103 Bauer Drive, Oakland, NJ 07436 • 800-648-7229 • Fax: 800-286-01 14
www.alpha-tools.com
Version 1  
						

							i
Introduction ........................................................................\
.................................. 2
  About Symbols  ........................................................................\
................. 2
General Safety Rules   ........................................................................\
................. 3
  Electrical Safety ........................................................................\
............... 4
  Tool Use and Care  ........................................................................\
........... 5
  Service ........................................................................\
............................. 6
  Specific Safety Rules  ........................................................................\
....... 6
  Use Proper Extension Cords  ................................................................... 7
  Grounding Instructions  ........................................................................\
..... 7
  Additional Precautions for using the VSP-320  ......................................... 7
  Laws and Regulations Of Noise Levels  ...................................................8 
VSP-320 Overview  ........................................................................\
...................... 9
  Specifications  ........................................................................\
................... 9
Accessories  ........................................................................\
............................... 10
  Components ........................................................................\
................... 10
VSP-320 Variable Speed Wet Polisher Operation...........................................  ..11
  Main Connection  ........................................................................\
............ 11
  Switching On and Off ........................................................................\
..... 11
  Ground Fault Circuit Interrupter (GFCI) ................................................. 12
  Testing In-line GFCI Unit  ........................................................................\
 13
  Variable Speed Adjustment .................................................................... 13
  Speed Pot Feedback Sensor  ................................................................. 14
  Water Control Valve ........................................................................\
....... 14
  Side Handle Installation  ........................................................................\
. 15
  Customizing Splash Guard  .................................................................... 16
  Splash Guard Installation  ....................................................................... 17
  Profiler and other approved Spindle Attachments ..................................18
  Water-Feed Attachment  ........................................................................\
. 18
Maintenance  ........................................................................\
.............................. 19
  Daily ........................................................................\
............................... 19
  Periodic  ........................................................................\
.......................... 20
  Bearings and gears  ........................................................................\
........ 20
  Carbon Brush Replacement ................................................................... 20
  Rear Cover Removal  ........................................................................\
..... 21
Alpha
® VSP-320 Schematic  ........................................................................\
....... 26
Alpha
® VSP-320 Parts List  ........................................................................\
........ 27
Accessories and Factory Service  ...................................................................... 29
Warranty  ........................................................................\
.................................... 29
Product Registration Card  ........................................................................\
......... 30
TABLE OF CONTENTS  
						

							2
INTRODUCTION
Thank you for purchasing the Alpha® Variable Speed 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.
V     Volts
A     Amperes
W    Watts
Hz    Hertz
~ or a.c.  Alternating Current
n0    No load speed
…/min  Revolution or reciprocation per minute
kg    Kilograms
mm    Millimeters
lbs    Pounds
  Protective Earth  
						

							3
  CAUTION
The  following  are  important  notes  for  products,  operation,  and  maintenance 
applicable to this polisher.
GENERAL SAFETY RULES
1. KNOW YOUR POWER TOOL.  Read  owner’s  manual  carefully.  Learn  its 
applications and limitations as well as specific potential hazards particular to 
this tool.
2.  KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.
3.  AVOID DANGEROUS ENVIRONMENTS. Keep work areas as dry as possible. 
Do not use tool in presence of flammable liquids or gases. Keep the area well lit.
4.  KEEP CHILDREN AND VISITORS AWAY. All  visitors  should  be  kept  a  safe 
distance from the work area. Keep out of reach of children.
5.  DON’T FORCE TOOL . It will do the job better and safer at the rate for which 
it was designed.
6.  WEAR PROPER APPAREL. Do not wear loose clothing or jewelry as it can 
get  caught  in  moving  parts.  Rubber  gloves  and  insulated  non-skid  footwear 
are recommended. Wear protective covering to contain long hair.
7.  WEAR PROPER EYE PROTECTION.  All users and bystanders must always 
wear  proper  personal  eye  protection  which  conform  with  ANSI/ISEA  Z87.1 
(CAN/CSA Z94.3). Also use a face or dust mask if operation is dusty. Always 
wear certified safety equipment.
8.  WEAR PROPER EAR PROTECTION.  All  users  and  bystanders  must  wear 
proper personal ear protection which conforms with ANSI S12.6 (S3.19) hearing 
protection.
9.  WEAR PROPER RESPIRATORY PROTECTION. All  users  and  bystanders 
must  wear  proper  personal  respiratory  protection.  Always  use  NIOSH/
OSHA  approved  respiratory  protection  appropriate  for  the  dust  exposure.  
 
Warning :  Some  dust  created  by  power  sanding,  sawing,  grinding,  drilling, 
polishing  and  other  construction  activities  contains  chemicals  known  to  the 
State of California to cause cancer, birth defects, or other reproductive harm. 
Some examples of these chemicals are:
  —  Lead from lead-based paints
  —  Crystalline silica from bricks, cement and other masonry products, and
  —  Arsenic and chromium from chemically-treated lumber.
Your  risk  from  these  exposures  varies,  depending  on  how  often  you  do  this  type 
of  work.  To  reduce  your  exposure,  work  in  a  well  ventilated  area,  and  work  with 
approved safety equipment, such as dust masks that are specially designed to  filter 
out microscopic particles. To familiarize with the risks associated with a material, 
consult  with  your  employer,  manufacturer/supplier  and  government  agencies 
regarding the hazards of the materials and their recommendations to protect yourself.  
						

							4
10. DON’T ABUSE WATER SUPPLY HOSE. Don’t carry tool by supply hose or 
expose to traffic areas where it can be crushed.
11.  ALWAYS SECURE WORK PIECE. Use clamps or a vise to hold work. It’s safer 
than using your hand and it frees both hands to operate tool.
12.  DON’T OVERREACH. Keep proper footing and balance at all times.
13.  DISCONNECT TOOLS WHEN NOT IN USE. Always  disconnect  tool  before 
servicing when changing blades.
14.  REMOVE ADJUSTING KEYS AND WRENCHES. Form a habit of checking to 
see that keys and adjusting wrenches are removed from tool before turning it on.
15.  MAINTAIN TOOLS WITH CARE.  Keep  tools  clean  at  all  times  for  best 
and  safest  performance.  Follow  instructions  for  lubricating  and  changing 
accessories. Keep handles dry, clean and free of oil or grease. Inspect moving 
parts for alignment and binding as well as for breakage and improper mounting.
16.  AVOID ACCIDENTAL STARTING. Do not carry a “connected” tool, or make 
adjustments,  or  change  discs  without  making  sure  the  tool  is  disconnected 
from the power supply.
17.  USE ONLY RECOMMENDED ACCESSORIES. The use of any accessories 
other  than  what  is  listed  or  recommended  for  this  particular  tool  may  be 
hazardous.
18.  KEEP HANDS AWAY FROM ALL MOVING PARTS.
19.  USE SIDE HANDLES. Supplied with tool for control and safety.
20.  STAY ALERT.  Watch  what  you  are  doing  and  use  common  sense.  Do  not 
operate tool when you are tired, or under the influence of medication or alcohol.
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 breakdown, 
grounding provides a low resistance path to carry electricity away from the user.
•	 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 .
•	 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.
•	 Make sure the 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.  
						

							5
•	Do not abuse the cord. Never use the cord to carry the tools or pull the plug 
from  an  outlet/receptacle.  Keep  cord  away  from  heat,  oil,  sharp  edges,  or 
moving parts. Replace damaged cords immediately.  Damaged cords increase 
the risk of electric shock or fire.
•	 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. 
TOOL USE AND CARE
•	Use clamps or other practical ways 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.
•	 Inspect for and remove all foreign objects from workpiece before 
polishing.  Following this rule will reduce the risk of serious personal injury .
•	 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.
•	 Keep hands away from polishing area.  Following  this  rule  will  reduce  the 
risk of cuts, scrapes, or serious personal injury.
•	 Hold tool by insulated gripping surfaces when performing an operation 
where the 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.
•	 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, 
changing accessories, or storing the tool. Such preventive safety measures 
reduce the risk of starting the tool accidentally.
•	 Check for damaged parts.  Before  further  use  of  the  tool,  check  the  guard 
or other part to determine if it is damaged or 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.  
•	 Store idle tools out of the reach of children and other untrained persons. 
Tools are dangerous in the hands of untrained users.
•	 Know your power tool. Read operator`s manual carefully.    Learn  its 
applications 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. 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.  
						

							6
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 parts or failure 
to follow maintenance instructions may create a risk of electric shock or injury.
SPECIFIC SAFETY RULES
1. 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.
2.    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.
3.    Always wear safety glasses with side shields.  Everyday eye-glasses have 
only impact resistant lenses; they are NOT safety glasses.
4.    Protect your lungs.   Wear a face or dust mask if the operation is dusty. 
5.   
Protect your hearing.  Wear hearing protection during extended periods of 
operation.
6.    Inspect tool cords periodically and if damaged, have repaired at your 
nearest Factory Service Center or other Authorized Service Organization.  
Constantly stay aware of cord location.
7.    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.  
8.  Check for alignment of moving parts, binding 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.
9.  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.
10.  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.
11.  Inspect for and remove all foreign objects from workpiece before 
polishing.  Follow this rule will reduce the risk of serious personal injury .
12.  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.  
						

							7
13.  
Keep hands away from polishing area. Follow this rule will reduce the risk 
of cuts, scrapes, or serious personal injury.
14.    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 .
15.    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.
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
061816 16
6 101816 14
10 121616 14
12 161412
 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.
ADDITIONAL PRECAUTIONS FOR USING THE VSP-320
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!  
						

							8
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.
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.
11.  Observe any suspicious abnormal noises when a polishing disc is 
attached	for	the	first	time	and	polisher	is	turned	ON.		 It may cause 
bodily injury if the polishing disc flies off.
12.  Do not touch the polishing disc while spinning.   The polishing disc spins 
very fast and you may hurt  yourself.
13.  Be careful of your surroundings when working in high places.   When 
working in high places, make sure there are no people below. Do not strap 
the power supply cord on anything or drop the polisher or any materials, 
otherwise, It may cause an accident.
LAWS AND REGULATIONS OF NOISE LEVELS
Please observe local laws and regulations regarding noise level in order to avoid 
disturbing surrounding areas.  Install a soundproof wall if required to comply with 
the local laws and regulations.  
						

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VSP-320 OVERVIEW
Ventilation Cap
 SPECIFICATIONS:
Working Power Supply.............................Single-phase AC, 50/60Hz
Voltage  ........................................................................\
............... 120V 
Plug Type ........................................................................\
.....  A (120V)
Amperage  ........................................................................\
.............. 7A
Wattage ........................................................................\
............. 800W
Motor  ........................................................................\
...... Single-phase
No-Load  .................................................................... 700~2500 RPM
Polishing Disc Size  ........................................................................\
. 4”
Cord  .............................................................. 15’ Single-phase Cable
Weight ........................................................................\
.............. 7.3 lbs
 
Machine, Cord, GFCI, Water-line, Splash Guard