Alpha Industries AEP-458 User Manual

Alpha Electric Polisher

Instr uctional Guide

AEP-458 (110V - 50/60Hz)

ELECTRIC TOOL

Please read this instruction manual thoroughly to ensure safety and correct use of machine.
Keep this Manual in a place where operators can access it easily , anytime when necessary .

250 Braen Avenue, Wyckoff, NJ 07481 • 800-648-7229 • Fax: [phone]

www.Alpha-Tools.com

ALPHA ELECTRIC POLISHER

INSTRUCTION MANUAL

Thank you for purchasing the Alpha Electric Polisher . This polisher is the workhorse of a complete polishing
system. A wide range of accessories help you perform many different tasks. This tool lets you grind, shape,
bevel, contour and polish all kinds of granite and marble. Y ou can easily change from one type of disc to
another in just a matter of seconds. The tool is used with water to help you get the best possible finish, to
reduce the health risks of dust, and to give the most savings in time and money from modern accessories.
For your safety , please read this manual thoroughly before you start operating this polisher .

About the symbols

Handling this machine incorrectly may cause an accident or injury . In this manual, safety notices are classi­fied into “DANGER”, “WARNING”, and “CAUTION” according to the hazard level:

DANGER Death or serious personal injury are imminent when the operator neglects

to follow suggested instructions.

WARNING There is a possibility of death or serious personal injury when the

operator neglects to follow suggested instructions.

CAUTION There is a possibility of personal injury or property damage when the

operator neglects to follow suggested instructions.

Note: Failing to observe CAUTION notices could result in death or serious personal injury in
some situations. Be sure to read and observe the safety notices to ensure sefety and correct use
of the machine.

Examples of the symbols

This symbol is followed by a DANGER, WARNING, or CAUTION notice, which depicts the
suggested procedure or practice, and / or possible dangers or injuries.

The symbol signifies prohibition. In or near this symbol, a prohibited action or motion
is depicted. (The symbol on the left prohibits disassembling the machine).

The symbol signifies an order or instruction, Which is illustrated in the symbol. (The
symbol on the left shows to unplug the power cord from the outlet.)

1

CONTENTS

Precautions for the safe use of this machine..............................................3

1. Operating environment.............................................................................3

2. Clothing and protective equipment.........................................................3

3. Before use.................................................................................................3

4. Att aching a wheel......................................................................................4

5. During use.................................................................................................4

6. Af ter use.....................................................................................................5

7. Precautions for using Alpha Electric Polisher.............................................6

Applications............................................................................................................................7

Specifications................................................................................................................. ........7

Part names..............................................................................................................................7

St andard accessories...........................................................................................................8

Alpha Hand Polishing System...............................................................................................9

Preparations before starting a job......................................................................................15

Preparations before operation............................................................................................15

How to operate.....................................................................................................................16

Maintenance and inspection..............................................................................................19

If a problem occurs..............................................................................................................20

Schematic..............................................................................................................................21

Parts List..............................................................................................................................22

Declaration by the manufactures........................................................................................24

2

Precautions for the safe use of this machine

Correct operation and regular maintenance are essential for the safe operation of this machine. Be
sure to read safety notices in this manual carefully before using or servicing the machine.

1. Operating environment

WARNING

• Restrict access to the workshop.

Do not permit anybody but the operator to access the workshop. In particular , be sure to keep
children away from the workshop.

• Be careful of fire or explosions.
Never use this machine near ignitable or explosive materials including gasoline, combustible
gases, or inflammable adhesives.
Otherwise, sparks generated by commutation or switching may cause fire or explosion.

CAUTION

• Keeping the workarea in order.

T ake p articular care by keeping the workarea in order.
Leaving the work bench or work area untidy could cause cloth or material to be caught at the end of
tools or machine to be dropped, resulting in a very dangerous situation.

2. Clothing and Protective equipment
W ARNING

• Wear personal safety clothing and equipment.

Be sure to wear all personal safety equipment including protective glasses, waterproof safety boots,
earplugs, and rubber gloves. If necessary , wear a dustproof mask in dusty areas. Inhaling dust can
damage the throat, lungs and circulatory system.

CAUTION

• Wear appropriate clothing

Do not wear loose clothing.
They can be caught in the rotating part of the machine.

3. Before use
W ARNING

• Supply the specified voltage

Supply the voltage specified on the nameplate of the machine.
Otherwise, damage could result to the machine, or risk of personal injury .

• Do not let water into the motor.

Water inside the machine will weaken the electrical insulation of the motor and may result in
electric shock.

• T ake measures against electric shock.

Be sure to install an GFCI to the power source to prevent electric shock.

3

CAUTION

• Use the machine only for its designated applications.

Do not use the machine for any purpose other than those specified in this manual.
Do not use the machine for grinding or polishing metal and wood workpieces.
This machine is specialized for processing of glass and natural stone.

4. Att aching tools

WARNING

• Prevent accidental start-up.

Be sure to unplug the power cord from the outlet before attaching or removing polishing wheels.
St arting the motor accidently may cause bodily injury .

5. During use

DANGER

•Do not touch rotating parts.

Never access or touch the rotating wheel of the machine with your hands or body during operation.

WARNING

• Secure work piece.

Use clamps to securely fix a workpiece onto the bench.
A loose workpiece may drop and cause injury .

• Do not operate the machine from an awkward position.

Ensure a secure footing and stable body position before and during operation the machine.
Operating the machine in an awkward position will increase human fatigue.

• Prevent accidental start-up.

Turn of f the power switch before plugging the power cord into the outlet.
Turn off the power switch and unplug the power cord when power failure occurs.
Do not carry the machine while the power cord is connected to the outlet.
St arting the motor accidently may cause bodily injury

• Do not overload the machine.

Never operate the machine at an output which exceeds the rated voltage specified on the plate.

• Operate the machine with attention.

Do not use the machine when you cannot concentrate or make appropriate decisions (when
tired, or under the influence of drugs or alcohol)

4

CAUTION

• Use the machine after you have appropriate training and knowledge about it.

Never permit an untrained person or a child to use the machine.

• Handle the machine with care.

If you accidentally drop, do not use the machine until checking that it is not cracked, deformed, or in
any way damaged.
Do not block the ventilation window to avoid motor burnout.

6. Af ter use

W ARNING

• Use specified parts

Use specified genuine replacement parts when servicing the machine

CAUTION

• Conduct adequate maintenance and inspection.

Blow dust from inside the motor.
Always clean and maint ain the power cord to prevent damage due to oils or grease.

• Unplug the power cord when not using the machine.

Be sure to unplug the power cord from the outlet before maintenance, change parts, inspection,

or cleaning.

• Keep the machine in a safe place.

Af ter using the machine, remove any dust or dirt from it and store it in a dry , safe place.
Do not store the machine in areas:

• where children can reach the machine or it can be easily tampered with;

• where temperature and humidity fluctuate suddenly;

• where the machine is exposed in rain and high humidity;

• where the machine is exposed in direct sunlight.

• Handle the cord properly.

Do not move the machine without unplugging the power cord, or pull the power cord out of the
outlet.
By doing so may cause disconnection or short-circuit.
A void contact with heat, oil, or sharp objects.

ATTENTION

Observe the laws and regulations of noise levels in your area.
Please observe local laws and regulations regarding noise control in order to avoid disturbing surrounding
areas.
Install a soundproof wall if required to comply with the local laws and regulations.

5

Precautions for using the Alpha Electric Polisher .

In addition to the general safety notices described on the preceding pages, please read
and observe the following safety notices before using the machine.

W ARNING

• Use protective cover.

Be sure to attach the protective cover and use it during operation.
The protective cover will protect the operator if the wheel breaks.

• Do not leave the machine unattended while running.

Do not leave the machine unattended on the workbench or workshop while it is running.

• If you accidentally drop the machine, do not use the machine until checking that it is not

cracked, deformed, or damaged.

Cracks, deformation, or damage of the machine and/or wheel may cause bodily injury .

CAUTION

• Follow the procedures specified in the instruction manual correctly to attach a wheel or

an accessory to the machine.

If accessories are not correctly attached, they will scatter or fall off and may cause bodily injury .

• When for the 1st time a new wheel is attached and machine is turned on, observe any

suspicious abnormal noises.

• Conduct a test run.

Wait until the machine reaches operating rotation speed, and check that there are no abnormal
sounds or vibrations during idling. Refer to page 12 (7. Making test run)
Operations without conducting a test run could cause bodily injury .

• Be careful of your surroundings when working in high places.

When working in high places, make sure there are no people below .
Be careful not to catch the power cord on anything.
Be careful not to drop the machine or any materials. They may cause an accident.

• Install the power cord and the water hose to avoid interference with working area.

Make sure the power cord and the water hose do not interfere with working area.

6

Application

Grinding, sanding and polishing the corners of glass and natural stone.
Grinding, sanding and polishing the straight edge of glass and natural stone.
Grinding, sanding and polishing the bevel edge of glass and natural stone.

Specifications

Working power supply: Single-phase AC, 50/60 Hz
Volt age: 1 15v (AEP-458) 220v (AEP-258)
Motor: Single-phase, series commutator motor
No load: 2,000 r .p.m.
Continuous operation: 30 minutes
Weight: 5 lb/2.27 kg
Cord: 23 ft / 7m vinyl insulated three-conductor power cord with a grounding clip

Part Names:

Handle Grip

Spindle

Motor

End Cap

Power Cord

Power cord plug

Switch

Water Control V alve

Water Suppy Hose

Splash Cover

Figure-1

7

Standard Accessories:

Side Handle.......................................................1pc.

17 mm Wrench..................................................1pc.

26mm Wrench...................................................1pc.

15 Amp Ground Fault Interrupter.....................1pc.

Complete Water Supply Hose.........................1pc.

Splash / Safety Guard......................................1pc.

Carbon Brush....................................................1pc.

8

ALPHA HAND POLISHING SY STEM

s

The Alpha Wet Polishing System of fers high quality , hand held, water-fed power tools to cover most
common hand polishing applications in the stone and tile industries. High gloss polishes are easily achieved
while reducing harmful dust and increasing safety .

AEP-458

Page #

GV Backer Pad

Rubber/Rigid

Backer Pad

Page #

Ceramica

Wet

Granite Polishing System

Page #

Alpha Polishing Selection Chart

Application

Product Line Pa ge #

Ceramic a 12 HR R NR HR HR R (Hard Marble)
Twistouc h Turbo 13 NR HR HR NR HR R (Hard Marble)
Sandpaper (Marble) 13 HR HR R HR NR HR
Felt Wheel (M arble) 14 HR HR R HR NR HR W et
Flex ible bac k er P ad 10 HR R NR HR HR HR
Rigid Bac k er Pad 10 NR R HR NR HR HR
Twistouch Backer Pad11HRHRNRHRHR HR
Twistouc h Double M agic 11 HR NR NR HR HR HR
PVA* 14 HR R NR R NR HR Dry

Bullnose

Twistouch Adapter Page #

T wistouch Backer Pads Page #

Sandpaper & Felt Wheels

Wet or Dry

Marble Polishing System

Page #

Flat Edge Flat Curves Granite Marble

Polish Surface Sinkhole

Use with either AEP-458 or AIR-658

T wistouch T urbo

Granite Polishing System

(Wet) (Wet o r D r y)

Wet

Page #

Key: HR = Highly Recommended R = Recommended NR = Not Recommended

*PV A Quick must be used dry. It can be used on the AEP-458 without water

Please refer to the above chart and cross-reference to the page number for additional information on a
specific product group. If your application is not mentioned or you have a question concerning a product,
please contact the Technical Information Line at 1-800-648-7229. Y ou may also access Technical Notes
from our Fax-On-Demand by dialing 1-888-29-ALPHA.

9

ALPHA RIGID BACKER PADS

Alpha Professional T ools first introduced rubber
backer pads with the AEP-458 electric polisher
to promote the concept of wet polishing, which
became the accepted method of polishing.
Alpha recognized the need to add a rigid version
of this backer pad to its product line for the
straight edge or flat surface polishing
applications. We realized that Ceramica, with a
flexible backer pad, was too flexible for these
applications and produced wavy finishes. The
Rigid Backer Pads served to resolve the wavy
finish by keeping the Ceramica flat to the
polished surface. Although not the best

alternative compared to Twistouch T urbo for this
application, fabricators and tile contractors still use it with good results. Restoration workers find that the
rigidness of the pad enables them to work in small areas such as corners or staircases. Large machine
manufacturers began to recommend flexible diamond discs for use on their automatic edge polishing
machines specifically for the bullnose application using the Alpha Rigid Backer Pad. V elcro backed like
the flexible pads, they also accept Ceramica, Sandpaper , and Felt Wheels. The Rigid Backer Pad reduces
distortion on the surface and wavy results on straight edges. Available in 3, 4 and 5-inch sizes, the Rigid
Backer Pad is exclusive to Alpha Professional Tools. It comes in the standard 5/8-1 1 thread commonly
found on most polishing tools today . Some metric sizes are available on request. Super rigid and flat, there
is no other backer pad like this.

ALPHA RUBBER BACKER PADS

The Alpha Rubber Backer Pads were

developed as a part of the wet polishing

system that Alpha introduced to the North

American markets. This wet polishing

system quickly became the accepted

method of polishing. The Alpha Rubber

Backer Pad proved to be very durable and

soon became the backer pad of choice

among fabricators, tile contractors,

monumentalists and restoration workers.

The Alpha Rubber Backer Pads are

VelcroTM backed and will accept Ceramica,

Sandpaper and Felt Wheels. All users of

polishing equipment will love the quality and
life of these backer pads. Extremely flexible, these backer pads are ideally suited for tough contours
and inside curves. This allows the user to get in tight corners with ease. Available in 2, 3, 4, and 5-inch
versions, these pads come with the standard 5/8-1 1 thread, commonly seen on most of the polishing
tools in use today . Some metric sizes are available on request. Whether you are a fabricator, tile installer ,
monumentalist or a restoration worker, Alpha Rubber Back er Pads are for you. Highly resistant to
the rigors of daily use, these flexible backer pads are the best on the market.

10

ALPHA TWISTOUCH SYSTEM

The New Alpha T wistouch System is a safe and long lasting
polishing system that is quick and easy to use. The Twistouch
System will increase performance and improve productivity,
saving you time and money. The Twistouch Adapter is
specially designed to accept T wistouch Turbo and Twistouch

Backer Pads, which accept velcroTM backed accessories. The
Alpha Twistouch System has everything necessary for all

of your hand held polishing needs.

Electric Polisher

TWISTOUCH ADAPTER

NEW

NEW

T wistouch Turbo

NEW

T wistouch A dapter (Fits 3” & 4”” backer pads)
(TW25/8AL)

Bullnose & Curved Edge

Polishing for Granite & Hard Marble

T wistouch Backer P ad

NEW

NEW

Ceramica (Flexible Diamond Disc)

3” (TW3BRG)
4” (TW4BRG)

Double Magic

3” (TW3BDM)
4” (TW4BDM)

Marble PolishingFlat Edge Granite Polishing

NEW

Sandpaper Felt Wheel

11

ALPHA CERAMICA THREE PART SY STEM

V

V

V

Alpha Ceramica is a three part system for polishing granite, hard marble and porcelain ceramics. Utilizing
the best grade industrial diamonds and the best bond materials, Alpha Ceramica is sure to provide the best
possible finish on your polished stone.

Part 1: Ceramica Vitrified and Ceramica Metal

Long lasting and aggressive design.

•
Rigid or flexible depending upon application requirements.

•
Use for light shaping work, smoothing and preparing for the

•
polishing process.

Part 2: Ceramica Resin

Fine grade diamonds are heat sintered in a hard resin bond within a

•
flexible matrix.
Each grit covers the previous grit and through the process closes the

•
pores for a natural polish.
After the last grit, a solid natural polish is achieved.

•

Part 3: Ceramica Buff

Super fine abrasive type disc that brings out a deep glossy reflection

•
with a mirror finish.
Use in place of messy polishing powders and dangerous chemicals for

•
final polishing.

Key: NR = Not Recommended R = Recommended HR = Highly Recommended

Alpha Ceramica is designed for a variety of
applications and can be used in the polishing
shop and at the job site. A long time standard
in the fabrication area, there are no other
systems with the same capability for a deep
glossy finish.

APPLICATION

Ogee Edge NR R HR

Undermount Sink Hole NR R HR

Inside Corners NR R HR

Bull Noses HR R R

PERFORMANCE

Durability HR R HR
Flexibility R HR HR

Cutting HR R HR

POLISHING AREAS

Concave R HR HR

Convex HR R R

Flat R NR HR

ITRIFIED RESIN METAL

ITRIFIED RESIN METAL

ITRIFIED RESIN METAL

12

ALPHA TWISTOUCH TURBO

New Alpha T wistouch Turbo works as part
of the Alpha Twistouch System that
replaces Alpha T urbo. The Alpha “Original” Turbo
discs were a result of many years of research
for a series of diamond grits specifically
designed to polish flat granite areas. Before
Turbo discs existed, hand polishing of flat granite
was done with Ceramica – a flexible diamond
disc. Although performance was acceptable,
most often a wavy finish was obtained due to
the flexibility of the Ceramica discs. Alpha
“Original” Turbo discs resolved this problem;

however, the V elcro
and often wore out before the disc. Alpha Twistouch Turbo improves this popular polishing disc. It is
now safer and easier to use for flat granite polishing. Applications such as S traight Edge Polishing, Scratch
Removal, Floors (near walls, corners and staircases), Checks and Washes on Monument s, Chamfered
Edges, and Drain Boards can be done with ease using Alpha Twistouch Turbo. Fabricators,
monumentalists and restoration workers will love the results they obtain by using Alpha Twistouch Turbo.
The advanced “twist and lock” design gives the user better control during polishing, which allows for less
operator fatigue and better end results. Grits are easily changed thus increasing production capability . In
addition to the original selection of grits, we have added final buff discs to the Alpha Twistouch Turbo
series, which will improve your final polish results on any flat granite surface. Used as a wet polishing
system, Alpha T wistouch Turbo is a welcomed improvement for flat granite polishing applications.

™ made disc removal difficult

ALPHA SANDPAPER

“For Marble Polishing”

Alpha Sandpaper discs consist of a

waterproof Velcro™ backed material combined

with a silicon carbide abrasive, which is the

perfect combination for use on marbles and

softer types of natural stone. Marble fabricators

find Alpha Sandpaper to be effective and

durable. Tile contractors find Alpha Sandpaper

to be very adaptable to onsite work and easy to

use. Restoration workers can polish wide areas

quickly without any hassle or difficulty. Alpha

Sandpaper is waterproof sandpaper that

resists clogging when used wet thus extending
the life of the disc. The discs can be used dry if necessary and are very durable. The V elcro™ makes disc
changes simple. Silicon Carbide is the abrasive of choice that is recommended for sanding and polishing
marble, travertine, terrazzo and onyx. Alpha Sandpaper can also be used to polish glass, metal and
wood.

For an extra high glossy finish, use the Alpha Felt Wheel with a buffing compound to finish the polishing
process.

13

ALPHA FELT WHEELS

The Alpha Felt Wheel is a very popular

material for the final buff process in stone

fabrication. Alpha Felt Wheels are V elcro™

backed buffing wheels designed for use with

polishing powders, polishing pastes, and

polishing bars to bring out a deep glossy finish

on marble and delicate granite edges such as

ogees & bullnoses. Marble fabricators love the

luster they obtain. Monumentalists like the

durability of the Alpha Felt Wheel. Tile

contractors love the glossy finish they can

present to their customers. We designed Alpha
Felt Wheels specifically to hold up to the acidic contents of most polishing compounds and the heat that
is typically generated during the final polishing process. Alpha Felt Wheels are ¼ inch thick and have the
perfect degree of hardness verses softness. These factors combined with the easy use of the Velcro™
backing, make Alpha Felt Wheels the best available final polishing disc for marble.

ALPHA PVA QUICK CHANGE STYLE

“Marble Edge Polishing System”

Alpha PVA Quick Change System is a low
speed version of the original “Makita” style PVA
and is designed for use on an aluminum snail-lock
backer plate specifically developed for low speed
polishing tools such as the AEP-458 and the AIR-

658. Alpha PVA Quick Change will work on all
of the same applications that the “Makita” style PV A
will, with the same excellence and quality . Marble
shops, tile installers or anyone else that already
has access to a low speed-polishing tool will find
that the Alpha PVA Quick Change system
will speed up their productivity. The aluminum
backer plate is attached to the polishing tool and
each of the pads has a snail lock adapter. The
adapter simply fits into place and locks on by a
twisting motion. T o remove the pads simply untwist
and remove, then replace with the next grit. This “
Quick Change” process saves time, increases
productivity and Alpha PVA Quick Change is

an exclusive, revolutionary product that will enhance any marble crafter’s shop.

14

Preparation before starting a job

Before using the machine, be sure to complete the following preparations.

1. Installing a ground fault circuit interrupter. (GFCI)

T o prevent electrical shocks, be sure to install a ground fault circuit interrupt or between the main
power supply and the cord of the machine.

2. Complete grounding

The machine should be thoroughly grounded by attaching the grounding clip on the power

cord to a known ground.
Note to the user: A GFCI must be used when this machine is used anywhere in the damp

environment, or when it is used with a highly conductive liquid like water, or when it
is used on metal plates, steel frames or platens.

DANGER

Before using the machine, be sure to ground it. Never connect the Be sure to connect the
ground lead to a gas pipe. This is very dangerous. ground lead.

3. Organize the work area

Before beginning operations, make sure that the work area conditions are well organized for
grinding safely .

Preparations before operation

WARNING

Before using the machine, check the following. Items 1 - 5

1. Rubber gloves and waterproof safety boots should always be worn.

Be sure to wear rubber gloves and waterproof safety boots. If they are worn, cracked or have
any holes in them, replace them. Otherwise, you may receive an electrical shock.

2. Check the working voltage.

Be sure the voltage specified on the nameplate is the voltage available at the outlet. If the
machine is used with higher voltage than specified, the motor will burnout. This machine cannot be
used with a direct voltage source or with a portable generator . Any attempt s to do so may damage
the machine or cause an accident.

3. Inspect your polishing wheels.

Never use cracked or chipped polishing wheels.

15

4. Make sure that the switch is off.

If you plug in the power cord without realizing that the switch is on, the machine will start, and may
cause an accident.
When the switch lever (see “Part names”) is tilted toward the ON label, the machine is turned on.
When it is tilted toward the OFF label, the machine is turned off.
Make sure the switch lever is tilted toward the OFF label before plugging in the cord.

5. Checking the outlet

When the plug of the power cord is inserted into the outletand is loose or is easily pulled out, the
outlet should be replaced. For such task, consult your electrician.
If the outlet is used continuously , it may overheat and cause accidents.

6. Making test runs

CAUTION

• Before turning the switch ON, make sure that the rotating parts are nottouching anything. If the
switch is turned on while they are in contact with anything else, the wheel may break and it may
cause injuries.

• When a new wheel is attached and the switch is first turned on, keep your body well away
from the exposed sides of the wheel for a moment until the machine reaches full speed.

It is very dangerous to perform grinding operations using cracked or chipped wheels.
Before starting grinding operations, keep the wheel away from anyone nearby . Be sure to make a few
test runs, to check whether there are any abnormalities.
T est run duration:

When replacing a wheel...........................At least 3 minutes

When starting operations each day ..........At least 1 minute

How to operate

WARNING

• When grinding operations are interrupted to replace a wheel
or when you are through with a particular operation, be sure

Remove the plug
from the outlet.

to turn off the switch.

• During operation, be sure to wear safety glasses.

• If water gets in the motor , it may shock the operator or
damage the machine. When halting an operation or replacing a wheel, put the machine in a
safe place where water will not be splashed on it.

• When checking the grinding condition, the rotation of wheel or the position of the wheel
during operation, be sure to look through the observation port. (see fig. - 1 1)

16

1. When using the machine

1. WATER SUPPLY HOSE

This hose may be connected to any faucet or garden hose. It is composed of a special kinkproof mate­rial. Replacements are available should the hose become damaged however .

Water Supply Hose

Garden Hose

Screw on/off

2. WATER CONTROL VALVE

This valve lets you adjust the flow of water through the spindle. It may be used to shup off the water en­tirely when changing discs. When storing the tool overnight, open the valve and drain all water from the
supply hose and tool.

Open

Close

17

3. POWER SWITCH

On/Off Switch

2. How to grind

Make sure the water is flowing. Move the chamfer machine along the stone workpiece to grind it.
Adjust the water flow, traveling speed and pressure while grinding.

Switch operation

When the switch lever (see “Part names”) is tilted toward the ON label, the machine is
turned on. When it is tilted toward the OFF label, the machine is turned off.

How to handle wheels

After switching the machine ON, and the motor has reached its constant rpm’s, begin
grinding.
When the wheel first comes into contact with the workpiece, make contact slowly .
Do not apply more force onto the machine than is required. Such action may actually
damage the wheel, reduce its working efficiency and shorten the machine’s service life.
T o change smoothly from rough chamfering to polishing, the following sequence of
wheel changes is recommended.

Precautions immediately after use

After the job is completed, turn off the switch. After the wheel stops rotating completely , put
the machine in a safe place.
If your hand is released off the machine before the wheel stops rotating, it may cause
an accident. Wait until the machine stops running.

18

Maintenance and inspection

WARNING

Be sure to unplug the cord from the outlet. Otherwise, the Unplug the power
machine may start abruptly and it may cause an accident. cord from the outlet.

Rubber gloves and waterproof safety boots

Always be sure to wear rubber gloves and waterproof safety boots. If they are worn, cracked or have any
holes in them, replace them.

Checking the attaching screws

Before starting any operation, if any screws are loose.
If the machine is used with loose screws, it is dangerous. Be sure to retighten them.

Checking the carbon brush

Carbon brushes are used inside the motor and will wear out over time.
If a carbon brush is worn too much, it may cause the motor to malfunction or fail. If the length of the carbon
brush reaches the wear limit (4 mm), replace it.
Keep the carbon brush clean, so that it can slide freely in the brush holder.

wear limit

10 mm

Handling the motor

The motor windings are the heart of this machine. Pay special attention not to damage the windings and
not to expose them to oil or water.

4 mm

Replacement procedure When the brush cover (see “part

names”) is removed using a flat
screwdriver, the carbon brush can be
removed.

CAUTION

When replacing the carbon brush with a new
one, be sure to use only an MG-1003 carbon
brush made by Sanko (or Mitachi).

CAUTION

If dust or dirt settles in the motor, it may cause it to malfunction.
After 50 hours operation, run the motor with no load and blow dry air in the End Cap (see “part
names”).
This is effective for removing dust or dirt.

19

If a problem occurs

If the machine does not operate normally , do not try to repair it by yourself. Contact your dealer or Alpha
Professional T ools.

DANGER

If this machine is disassembled, there may be a possibility of Never disassemble
electrical shocks. the machine.
Do not disassemble this machine.

The machine you purchase may have a
somewhat different appearance form the one
used in the figures in this manual.

Limited Warranty of Alpha Electric Polisher

Alpha Professional Tools warrants this product against defects in material and
workmanship for a period of 90 days from the date of original retail purchase (proof
of purchase required). If Alpha Professional T ools receives notice of such defect s
during the warranty period. Our obligation assumed under this warranty is limited to
the repair or replacement of parts, without charge. This warranty does not apply to
tool accessories.

For Warranty Claims: Send complete tool with all your information and details of
the problem to the below address, transportation prepaid. Do not send tool
accessories.

20

AEP-458 Schematic Update Ver 2.0

July 96

102

21

P ARTS LIST

MODEL: ELECTRIC 458

SCHEMATIC #

1
2
3
4
5
6
7
8
9
11
13
14
15
16
17
18
19
20
22
23
26
27
28
30
31
32
33
34
35
37
38
39
40
41
42
43
45
46
47
48
49
51
52

ITEM # DESCRIPTION LIST PRICE

416-01 HEAD (with sleeve)
416-02 BODY
416-03 END CASE
416-04 HEAD CAP
416-05 GEAR CASE (with sleeve)
416-06 GEAR SHAFT 5/8"-11 Thread
416-07 PROTECTOR BAND FOR DISC COVER
416-08 RUBBER COVER FOR DISC COVER
416-09 BEVEL GEAR
416-11 WOODRUFF KEY 3x10
416-13 ARMA TURE
416-14 FIELD COIL
416-15 CONNECTING SPRING
416-16 CARBON BRUSH SET (2pc/set)
416-17 HOLDER CAP
416-18 CARBON HOLDER
416-19 SWITCH FITTING PLA TE
416-20 E-SIDE PLA TE
416-22 SWITCH SET
416-23 DISC COVER
416-26 GRIP
416-27 BANDY FOR CORD
416-28 SPRING WASHER 10MM
416-30 PLUG WITH CORD
416-31 CORD GUARD
416-32 STOP RING R-26
416-33 BEARING FITTING PLA TE
416-34 PINION GEAR SHAFT
416-35 STOP RING S-10
416-37 GEAR
416-38 STOP RING S-8
416-39 BUSHING
416-40 STOP RING S-9
416-41 SWITCH COVER
416-42 RUBBER HOLDER COVER
416-43 TUBE
416-45 CONNECTOR W
416-46 CONNECTOR M
416-47 COCK FITTING PLA TE
416-48 WA TER CONTROL COCK
416-49 WA TER HOSE
416-51 STOP SP ANNER 17MM
416-52 STOP SP ANNER 26MM

$ 14.36
$ 23.61
$ 6.16
$ 30.79
$ 18.99
$ 32.07
$ 2.57
$ 2.82
$ 23.79
$ 0.38
$ 71.84
$ 26.94
$ 0.13
$ 5.20
$ 0.33
$ 2.05
$ 0.38
$ 1.03
$ 17.19
$ 8.73
$ 5.13
$ 0.25
$ 0.13
$ 8.21
$ 0.65
$ 0.65
$ 0.65
$ 24.12
$ 0.13
$ 13.08
$ 0.13
$ 2.50
$ 0.38
$ 0.52
$ 3.08
$ 10.50
$ 0.65
$ 0.13
$ 3.33
$ 15.39
$ 31.50
$ 3.47
$ 6.93

22

SCHEMA TIC #

ITEM # DESCRIPTION LIST PRICE

53
56
57
58
59
60
61
63
64
65
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
99
100
101
102

416-53 SET SCREW M5x16
416-56 SET SCREW M4x45
416-57 SET SCREW M4x10
416-58 BO LT M4x10
416-59 SET SCREW M5x25
416-60 SET SCREW M4x60
416-61 SELF T APPING SCREW M4x12
416-63 SET SCREW M4x12
416-64 NUT M4
416-65 SET SCREW M4x16
416-70 BALL BEARING 6200DDU
416-71 OIL SEAL TCNY 12-27-7
416-72 OIL SEAL TC 12-22-7
416-73 BALL BEARING 6000DDU
416-74 BALL BEARING 629DDW
416-75 BALL BEARING 608DDW
416-76 DUST PLA TE 629
416-77 DUST PLA TE 608
416-78 SILICON RUBBER P ACKING
416-79 TUBE FITTING 6-01M
416-80 JOINT TG6-1PT1/8
416-81 JOINT TG8-1PT1/8
416-82 JOINT WITH ROTAR Y NUT
416-83 ENAMELING SCREW
416-84 P ARALLEL KEY 3X3X8
416-85 SHOWER BOL T
416-86 WAVE WASHER W-10
416-99 C-SHAPE HANDLE
416-100 GEAR SHAFT (M16 THREAD)
416-101 GEAR SHAFT (M14 THREAD)
416-102 SPLASH GUARD

$ 0.13
$ 0.25
$ 0.13
$ 0.52
$ 0.13
$ 0.13
$ 0.25
$ 0.38
$ 0.13
$ 0.13
$ 4.18
$ 10.26
$ 9.63
$ 7.56
$ 3.22
$ 2.95
$ 0.33
$ 0.33
$ 0.85
$ 4.50
$ 7.65
$ 3.80
$ 13.48
$ 0.07
$ 0.65
$ 2.25
$ 0.07
$ 34.00
$ 32.07
$ 32.07
$ 5.08

Reference Guide when ordering parts

Part number Changes
Schematic #12 (Stop Ring S-10) use 416-35
Schematic #36 (Stop Ring S-10) use 416-35
Schematic #55 (M4x10 Screw) use 416-57
Schematic #62 (M4x10 Screw) use 416-57
Schematic #10 (Bushing) use 416-39
Schematic #54 (M5x16 Set Screw) use 416-53

23

DECLARATION BY THE MANUFACTURER

(amended directive 89/392/EEC - Annex II A)

Name of manufacturer: Alpha Professional T ools
Address of Manufacturer: 250 Braen Avenue

Wyckoff, NJ, 07481

Herewith declares that:
ELECTRIC TOOL: “Electric Polisher”

Make: Alpha Professional T ools
T ype: AEP-458 / AEP-258
Serial No: between xxxxx and yyyyy inclusive.

- does comply with the provisions of the “Machinery” Directive (Directive 89/392/EEC amended by
Council directive 91/368/EEC, 93/44/EEC and 93/68/EEC)

And furthermore declares that:

- The following (parts/clauses of) harmonized standards have been applied:
On request of Sanwa Kenma Kogyo Co., Ltd., the compliance of the model with the requirements
of the EC Machinery Directive was established by AIB-VINCOTTE INTER, A venue A. Drouart
27-29, B-1 160, Brussels, Belgium (notified body under the number 26 for machinery Listed in
annex IV of the EC Machinery Directive), acting here as competent body.

Wyckoff, NJ U.S.A.

October. / . 1996

24

DIRECTOR. Head office: Uji Factory
Alpha Professional Tools