Edco Alr Specifications

E-ALRE-I-0517

Operator’s Instruction Manual

Models ALR, ALR-E,

ALR-BS

CHISEL SCALERS

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E-ALRE-I-0517

EQUIPMENT DEVELOPMENT CO., INC.

Page 2

•When operating this equipment, the operator must

wear approved job related safety attire. Eye and hearing

protection must be worn at all times while equipment is

in use as sound levels exceed 85 dBA. Steel toe safety

shoes should be worn. Head protection is required if work

is performed overhead. Wear proper dust mask based on

material being removed.

•Use the correct size air hose for the tool, ½” diameter

(minimum). Hose and ttings must be rated for safe

handling in excess of 100 PSI pressure. The working

pressure of this tool is 80-90 PSI and should never be

allowed to exceed 100 PSI.

•ALR-E Limit the hose length to 30 feet (10 meters) max-

imum. Note: The pressure drop of 1/2” diameter hose is

approximately 1 PSI per 90 linear feet.

•ALR-BS Limit the hose length to 30 feet (10 meters)

maximum. Note: The pressure drop of 3/8” diameter hose

is approximately 3 PSI per 90 linear feet.

•A lter/water separator must be provided on the air

source to a󰀨ord an adequate supply of clean, dry air to

this tool. A lubricator should also be used. If a lubricator is

unavailable, lubricate the tool daily by putting 4 to 5 drops

of lightweight machine oil in the hose connector opening

prior to connecting the air supply. In cold weather, use

graphite oil for lubrication.

•Disconnect the air supply before re-

moving or installing a chisel or accessory.

Squeeze the hand lever to release all com-

pressed air from the tool. Use only genuine EDCO chisels

and accessories with this equipment. Failure to do so may

result in serious bodily injury or death.

•Replace any damaged parts immediately. Use only

genuine EDCO parts.

SAFETY MESSAGES

Indicates an imminent hazard which, if not avoid-

ed, will result in death or serious injury.

Indicates an imminent hazard which, if not avoid-

ed, can result in death or serious injury.

Indicates hazards which, if not avoided, could

result in serious injury and or damage to the

equipment.

READ AND UNDERSTAND THE OPERATOR’S INSTRUCTION MANUAL THOROUGHLY

BEFORE ATTEMPTING TO OPERATE THIS EQUIPMENT.

Death or serious injury could occur if this equipment is used improperly.

•Safety Instructions are proceeded by a graphic alert symbol

of DANGER, WARNING, or CAUTION.

DUST WARNING

Some dust created by power sanding, sawing, grinding,

drilling, and other construction activities contains chemicals

known to cause cancer, birth defects, or other reproductive

harm. Some examples of these chemicals are:

• Lead from lead-based paints, and

• Crystalline silica from bricks, concrete and other

masonry products.

Your risk of exposure to these chemicals varies depending

on how often you do this type of work. To reduce your risk:

work in a well ventilated area, use a dust control system,

such as an industrial-style vacuum, and wear approved

personal safety equipment, such as a dust/particle respi-

rator designed to lter out microscopic particles.

•To install or remove chisel: Disconnect the air supply.

Squeeze the hand lever to release all compressed air.

Pull back in the spring loaded locking collar and hold while

removing the chisel. Hold back on the spring loaded lock-

ing collar while firmly seating the new chisel in the holder.

Release collar to retain the chisel.

•The appropriate accessory must be used for the job at

hand. Do NOT force the tool into the work. The hammering

action of the tool will perform the work for you. NEVER

USE THE TOOL AS A PRY BAR. Damage to the equip-

ment will result. If the tool does not seem to perform the

work to your specifications, try another accessory or

contact Discount-equipment

•To activate tool, attach the air source, firmly grip the

tool and then squeeze the hand lever on the air valve.

• After releasing the air valve hand lever,

the tool will continue to operate for up to 15

seconds. This is a normal result of stored

up pressure in the tool casing being released gradually.

Be sure to rmly grip the tool until ALL air leaves the

chamber.

•Remove the air source from the tool when not in use.

•This equipment will create dust from the

material being removed. That dust may

contain a chemical known to the state of

California to cause cancer and/or birth defects or other

reproductive harm. Check the chemical properties of the

materials to be removed.

•It is the operator’s responsibility to

keep other people (workers, pedestrains,

bystanders, etc.) away during operation.

Block o󰀨 the work area in all directions with roping, safety

netting, etc. for a safe distance. Failure to do so may result

in others being injured by ying debris or exposing them

to harmful dust and noise.

AIR POWERED EQUIPMENT

AIR POWERED EQUIPMENT CONTINUED

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E-ALRE-I-0517

EQUIPMENT DEVELOPMENT CO., INC.

Page 3

Equipment Instruction Manual

EDCO Model ALR, ALR-E, ALR-BS

Table of Contents

Safety Guidelines............................................................................................................

Table of Contents............................................................................................................

Dust and Silica Warning..................................................................................................

Specications..................................................................................................................

Example of Work & Damaged Chisels & Installing and Removing a Chisel...................

Procedure for Lubricating the ALR..................................................................................

Correct Positioning of the Chisel....................................................................................

Accessories....................................................................................................................

Disassembly and Instructions.........................................................................................

Maintenance Instructions & Schedule............................................................................

Limited Equipment Warranty...........................................................................................

ALR-E ALR-BS

Length (L)

Weight Aluminum

66.0”

167.7 cm

57.0”

144.8 cm

12.3 lbs.

5.6 kg n/a

Weight Steel 18.5 lbs.

8.4 kg

24.5 lbs.

11.1 kg

Note: Specications for other models on page 4.

Note: Instructions in this manual are the same

for all models.

ALR-E Shown

9-10

10-11

Figure 1

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Page 4

Grinding/cutting/drilling of masonry, concrete, metal and other materials can generate

dust, mists and fumes containing chemicals known to cause serious or fatal injury or

illness, such as respiratory disease, cancer, birth defects or other reproductive harm.

If you are unfamiliar with the risks associated with the particular process and/or ma-

terial being cut or the composition of the tool being used, review the material safety

data sheets and/or consult your employer, the manufacturers/suppliers, governmen-

tal agencies such as OSHA and NIOSH and other sources on hazardous materials.

California and some other authorities, for instance, have published lists of substances

known to cause cancer, reproductive toxicity, or other harmful e󰀨ects.

Control dust, mist and fumes at the source where possible. In this regard use good

work practices and follow the recommendations of the manufacturers/suppliers, OSHA/

NIOSH, and occupational and trade associations. Water should be used for dust sup-

pression when wet grinding/cutting/drilling is feasible. When the hazards from inhalation

of dust, mists and fumes cannot be eliminated, the operator and any bystanders should

always wear a respirator approved by NIOSH/MSHA for the material being used.

Grinding/cutting/drilling of masonry, concrete and other materials with silica in their

composition may give o󰀨 dust or mists containing crystalline silica. Silica is a basic

component of sand, quartz, brick clay, granite and numerous other minerals and rocks.

Repeated and/or substantial inhalation of airborne crystalline silica can cause serious

or fatal respiratory diseases, including silicosis. In addition, California and some oth-

er authorities have listed respirable crystalline silica as a substance known to cause

cancer. When grinding/cutting/drilling such materials, always follow the respiratory

precautions mentioned above.

Dust and Silica Warning

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Page 5

EDCO Model ALR, ALR-E, ALR-BS SPECIFICATIONS

SPECIFICATIONS FOR - MODEL ALR-BS

23.0 lb (10.4 kg)

LENGTH WEIGHT

ALR-BS-STRAIGHT 57 in (144.8 cm)

Blows per minute.................................. 3500

Stroke..................................................... 1.595 inches (40.5 mm)

Bore........................................................ 1.902 inches (48.3 mm)

Air Flow Rate......................................... 12-15 CFM @ 90 PSI

Working Pressure................................. 80-90 PSI (5.5-6.2 Bar), 100 PSI max

Noise Level During Operation............. Exceeds 85 dB(A)

Hearing protection must be worn

Caution...................................................Approximately 15 seconds of pressure

is stored in case after air valve is released

Note........................................................Specications are subject to change at any

SPECIFICATIONS FOR - MODEL ALR

LENGTH* WEIGHT*

Steel Aluminum

ALR-2

ALR-4

ALR-5

ALR-E

24.0 in (61 cm)

45.0 in (114.3 cm)

57.0 in (144.8 cm)

66.0 in (167.6 cm)

8.6 lb (3.9 kg)

12.5 lb (5.6 kg)

16 lb (7.3 kg)

18.5 lb (8.4 kg)

7.6 lb (3.4 kg)

8.5 lb (3.9 kg)

9.0 lb (4.1 kg)

12.3 lb (5.6 kg)

* All weight include the standard 4” (10.2 cm) chisel.

Blows per minute................................... 2100-3000

Stroke...................................................... 1.535 inches (38.99 mm)

Bore......................................................... 1.188 inches (30.18 mm)

Air Flow Rate........................................... 6-8 CFM @ 90 PSI

Working Pressure................................... 80-90 PSI (5.5-6.2 Bar), 100 PSI max

Noise Level During Operation............... Exceeds 85 dB(A)

Hearing protection must be worn

Caution....................................................Approximately 15 seconds of pressure

is stored in case after air valve is released

Note..........................................................Specications are subject to change at any

time.

24.5 lb (11.1 kg)

ALR-BS-ERGO 57 in (144.8 cm)

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E-ALRE-I-0517

EQUIPMENT DEVELOPMENT CO., INC.

Page 6

PROCEDURE FOR INSTALLING AND REMOVING A CHISEL

Remove the air supply before performing the following steps. To install a chisel,

there are several di󰀨erent types but all install in the same manner. Slide the collar

back towards the chisel holder and slide the chisel hex end into the chisel holder

and release the collar to lock the chisel in place. Be sure the chisel is seated all

the way into the chisel holder.

Pictured above shows the chisel installed. To remove a chisel reverse the above procedure and

pull the chisel out of the chisel holder.

Chisel Holder

Collar

EXAMPLE OF WORN AND DAMAGED CHISEL

EXAMPLE OF AN EVENLY WORN CHISEL

This is an example of a chisel that has been abused, prob-

ably hitting inserts, studs or other objects embedded in the

working surface. To get maximum life out of a chisel be care-

ful when working around objects protruding out of the work

surface.

This is an example of a chisel that has not been abused, as

you can see the wear is even across the width of the chisel.

Chisel edge may be renewed by grinding.

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Page 7

PROCEDURE FOR LUBRICATING THE ALR

To lubricate the ALR put four (4) to ve (5) drops of light weight machine oil in the hose connector

circled above before connecting the air supply, graphite oil in extremely cold weather.

Be sure the chisel is oriented correctly. When in the operating position the straight at edge should

be closest to the work surface and the beveled edge should be facing up as shown in the photo

above.

CORRECT POSITIONING OF THE CHISEL

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Page 8

Chisels 1”, 2” or 4” widths

General purpose demolition or clean

up. Chip away accumulation of

hardened debris or industrial

deposites, oil & grease absorbances,

ceramic & quarry tile, epoxy mortars,

grouts, refactory cuttings, furnace

slag, etc.

Scrapers 2”, 4”, 8” or 12” widths

Scraper Blades are made from extra

hard spring steel which fasten to a

milled shank. Easily removed and

replaced, they may be sharpened to

almost knife-like edges. Use to strip

and clean rubber, glue, mastic,

vinyls, floor coverings, ceramics,

insulation and fireproofing, paint

booth buildup, elastic grouts,

waterproofing membranes, tank

linings, rust accumulations,

corrosion and encrusted deposits

around water intakes, roofing

materials, etc.

Chipping Points

Use for demolition; breaking up

concrete, ceramics or any hard

material; break sharp edge of

sidewalk to eliminate trip hazards.

Joint Cleaner

Remove deteriorated joint com-

pound and sealers from factory

oors or highways.

Shingle Removal Tool

Serrated scraper blades are made

from extra hard spring steel and are

equipped to easily lift shingles.

Fastens to special milled chisel.

Tampers

For posts, tamp grout material in

confined areas, set packing

materials around pipe or flatten

asphalt edges.

Straight & Ergonomic Models

Chisels

Scrapers

Chipping Point

Big Stick Model

Bushing Tool

Forged and tempered, hardened steel

bushing hammer tool. Use to create a

roughened surface for an architectural

nish or better ahesion of coatings and

overlayments.

Pictured from left to right: ALR-2A, ALR-

4A, ALR-5, ALR-E, ALR-BS-ERGO, ALR-BS-

STRAIGHT

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Page 9

TO DISASSEMBLE THE ALR SERIES AND BIG STICK

NOTE: Items (#2), (#12), (#13) and (#18) can be replaced as assemblies.

NOTE: All threaded parts are standard right-hand threads.

1. Place Cylinder Housing (#12) in a vice and clamp on the at ends.

2. To remove Chisel Holder Chuck (#18), loosen Lock Nut and Capscrew, then unscrew the Chisel Holder from the

Cylinder (#15).

3. Unscrew Cylinder (#15) from Cylinder Housing (#12). Cylinder (#15) contains the Piston (#14). Piston is removed

by gently tapping on the small end and lifting Piston (#14) up and out of Cylinder (#15).

4. Cylinder Housing (#12) is not an operating part and rarely needs to be removed. If an air leak is detected, the “O”

rings (#3) should be replaced.

5. Casing (#5) if damaged, may be unscrewed form the Cylinder Housing (#12) and Valve Assembly (#2). There are

no moving parts in the Casing (#5).

6. To remove the Valve Assembly (#2) simply unthread from the upper end of the Casing (#5).

7. To replace Rubber Hand Grips (#4), remove Air Valve Assembly (#2), moisten grips with water and slide grips to a

comfortable position on Casing (#5).

*NOTE:

These items are assemblies.

Refer to illustration #2,

page 10, for breakdown.

ERGONOMIC

STRAIGHT

CHISEL SCALER

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Page 10

MAINTENANCE INSTRUCTIONS

1. Clean tool daily and keep it clean and lubricated. If a lubricator is provided with the air source, it should be adequate.

If you are unsure or no lubricator is provided, lubricate the tool daily before use by putting 4 to 5 drops of lightweight

machine oil in the hose connector opening. If tool is operated in cold weather (near or below freezing), use a graphite

oil instead of the lightweight machine oil as described above.

2. After every 100 hours of use, ush the tool thoroughly with an environmentally safe, nonammable and non-caustic

solvent to clean out any oil/dirt buildup in the tool. Oil tool immediately after ushing to prevent corrosion.

3. Replace any damaged parts immediately. Use only genuine EDCO parts.

STEPS TO DISASSEMBLE THE AIR

VALVE BODY ASSEMBLY

ILLUSTRATION (#2):

1. To remove Internal Valve Parts:

E - “O” Ring

D - Compression Spring

C - Valve Stem

B - “O” Ring

First remove the Capping screw (F). Note that the Valve Stem (C) should be replaced if it is worn and loose in Valve

Body (A).

2. The “O” Ring (B) for the VALVE Stem (C) may become unseated due to excess air pressure. Check this item if tool

fails to stop running when valve handle is released.

3. The Valve Lever (H) is held in place by the Rivet (I) and two Washers (J).

The “O” Ring (L) must be in place on Valve Assembly (A) to prevent air leaks when assembly is threaded into Cas-

ing (#5) page 9.

NOTE: All “O” Rings should be inspected and replaced if air leakage or damage is detected.

NOTE: Be sure to lubricate all parts with a lightweight machine oil when reassembling the tool.

ILLUSTRATION #2

Maintenance

Disconnect air source and chisel accessory

before performing any maintenance on this machine.

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Page 11

Maintenance Schedule

Repairs are to be done

by authorized EDCO

Dealers only.

Read and follow instruc-

tions in the motor owner’s

manual.

Every 100 Hours

of Operation

Daily

All maintenance to

be performed by

qualied

personnel.

Visual Inspection of

Entire Tool

Check chisel for

damage/uneven wear

Lubricate

Clean Dust & Dirt

O󰀨 of Tool

Check “O” Rings

Replace “O” Rings

Flush Tool

Before Operation

As Required

Every Tool Flush

Operational Keys to good equipment care and long life...

1. Before each use, check and insure all hardware, nuts, bolts and ttings are tight

and not worn or damaged. If damaged or missing hardware is noted, it should be

replaced before the tool is put back into service.

2. Check the maintenance instructions for important information about lubrication

intervals. Remember, equipment used in a dusty environment has more frequent

lubrication requirements than equipment that is not used in a dusty environment.

3. After each days use, the chisel scaler should be cleaned. When cleaning, cover

any openings to prevent contaminants from entering the equipment.

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