Ingersoll-Rand 7149-C, 7236-C, 7235-C, 7153-C User Manual

OPERATOR’S MANUAL

INCLUDING: OPERATION, INSTALLATION & MAINTENANCE

“22” SERIES SHORT GRINDERS

Models: 7149-C, 7153-C,

7235-C and 7236-C

READ THIS MANUAL CAREFULLY BEFORE INSTALLING,

OPERATING OR SERVICING THIS EQUIPMENT.

FAILURE TO OBSERVE THE FOLLOWING WARNINGS COULD RESULT IN INJURY.

To aid the operator’s understanding of proper and safe use of grinders, the publications, “Use, Care and Protection of Abrasive Wheels”, A.N.S.I. B7.1, and “Safety Code for Portable Air Tools”, A.N.S.I. B186.1, can be purchased from:

Do not use excessive work pressure.

Do not remove any labels. Replace any damaged label.

Use only accessories recommended by ARO.

SECTION

M10 MANUAL 43 Released: 5/79

Revised: 1 O-20-95 Form:

1566-2

American National Standards Institute, Inc. 1430 Broadway New York, New York 10018

Operate this tool at 90 p.s.i.g. (6.2 bar) maximum air pressure at the air inlet of the tool.. Disconnect air supply from tool before removing/installing wire brush or rotary file or performing other maintenance procedures. Keep hands, clothing and tong hair away from rotating end of tool. Anticipate and be alert for sudden changes in motion during start up and operation of any power tool. Never exceed rated r.p.m. of tool. Wear suitable eye and hearing protection while operating tool. Tool shaft can continue to rotate briefly after throttle is released. Do not lubricate tools with flammable orvolatile liquids such as kerosene, diesel or jet fuel. Use tool only for purposes for which it was intended.

Repeated prolonged operator exposure to vibrations which may be generated in the use of certain hand-held tools may produce Raynaud’s phenomenon, commonly referred to as Whitefinger disease. The phenomenon produces numbness and burning sensations in the hand and may cause circulation and nerve damage as well as tissue necrosis. Repetitive users of hand-held tools who experience vibrations should closely monitor duration of use and their physical condition.

The use of other than genuine ARO replacement parts may result in safety hazards, decreased tool performance and increased maintenance and may invalidate all warranties. ARO is not responsible for customer modification of tools for applications on which ARO was not consulted. Tool maintenance and repair should be performed by authorized, trained, competent personnel. Consult your nearest ARO authorized servicenter. It is the responsibility of the employer to place the information in this manual into the hands of the operator.

For parts and service information, contact your local ARO distributor, or the Customer Service Dept. of the Ingersoll-Rand Distribution Center, White House, TN at PH: (615) 672-0321, FAX: (615) 672-0801.

ARO Tool Products Ingersoll-Rand Company

1725 U.S. No. 1 North l P.O. Box 8000 l Southern Pines, NC 283888000

-0

Part of worldwide Ingersoll-Rand

FAILURE TO OBSERVE THE FOLLOWING WARNINGS COULD RESULT IN INJURY.

Turn off air supply and disconnect air supply hose before installing, removing or adjusting any accessory on this tool, or before performing any maintenance on this tool.

Do not carry the tool by the hose.

Wear hearing protection when operating this tool.

Air powered tools can vibrate In use. Vibration, repetitive motions or uncomfortable positions may be harmful to your hands and arms. Stop using any tool if discomfort, tingling feeling or pain occurs. Seek medical advice before resuming use.

Do not use damaged, frayed or

deteriorated air hoses and

fittings.

Do not overreach when operating this tool. Keep body stance balanced and firm.

This label must appear on

PN 48176-1 LABEL

WARNING = Hazards or unsafe practices which could

property damage.

no cost.

Operate at 90 p.s.i.g. (6.2 bar/620 kPa) maximum air pressure.

result in severe personal injury, death or substantial

CAUTION = Hazards or unsafe practices which could result in minor personal injury or product or property damage.

NOTICE = Important installation, operation or maintenance information.

ROUTINE LUBRICATION REQUIREMENTS

Ml0

Lack of or an excessive amount of lubrication will affect the performance and life of this tool. Use only recommended lubricants at below time intervals:

EVERY 8 HOURS OF TOOL OPERATION - Fill lubricator reser-

voir of recommended F.R.L. with spindle oil (29665). If an in line or air line lubricator is not used, apply several drops of spindle oil (29665) in air inlet.

EVERY 40 HOURS OF TOOL OPERATION - Flush tool with a solution of three (3) parts cleaning solvent to one (1) part spindle

oil. After flushing, apply a small amount of spindle oil in air inlet and run tool for one minute to insure proper lubrication.

AIR SUPPLY REQUIREMENTS

For maximum operating efficiency, the following air supply specifi-

cations should be maintained to this air tool:

AIR PRESSURE - 90 p.s.i.g. (6.2 bar)

AIR FILTRATION - 50 micron

LUBRICATED AIR SUPPLY

HOSE SIZE - 5/16” (8 mm) I.D.

An ARO® model C28231-810 air line FILTER/REGULATOR/LUBRICATOR (F.R.L.) is recommended to maintain the above air supply specifications.

RECOMMENDED LUBRICANTS

trained, competent personnel. Tools, hose and fittings shall be replaced if unsuitable for safe operation and responsibility should be assigned to be sure that all tools requiring guards or other safety devices shall be kept in legible condition. Maintenance and repair records should be maintained on all tools. Frequency of

repair and the nature of the repairs can reveal unsafe application. Scheduled maintenance by competent authorized personnel should detect any mistreatment or abuse of the tool and worn parts. Corrective action should be taken before returning the tool

for use. Disassembly should be done on a clean work bench with a clean

cloth spread to prevent the loss of small parts. After disassembly

is completed, all parts should be thoroughly washed in a clean solvent, blown dry with air and inspected for wear levels, abuse and contamination. Double sealed or shielded bearings should never be placed in solvent unless a good method of m-lubricating the bearing is available. Open bearings may be washed but should not be allowed to spin while being blown dry.

Upon reassembling, lubricate parts where required. Use 33153 grease, or equivalent, in bearings. Use 36460 lubricant for “O” ring assembly. When assembling “O” rings or parts adjacent “O” rings, care must be exercised to prevent damage to the rubber

sealing surfaces. A small amount of grease will usually hold steel

balls and other small parts in place while assembling.

Before mounting a wheel, after all tool repairs and whenever a grinder is issued for use, the speed of the grinder shall be checked with a tachometer to make certain that its actual speed does not exceed its rated speed.

Afterdisassembly is complete, all parts, except sealed or shielded bearings, should be washed with solvent. To relubricate parts, or for routine lubrication, use the following recommended lubricants:

Where Used

Air Motor

“O” Rings & Lip Seals

Gears and Bearings

36460 33153

Description

1 qt Spindle Oil

4 oz. Stringy Lubricant

5 lb. “EP” - NLGI #1 Grease

INSPECTION, MAINTENANCE AND INSTALLATION

Disconnect air supply from the tool or shut off air supply and exhaust (drain) line of compressed air before performing maintenance or service to the tool.

It is important that the tools be serviced and inspected at regular

intervals for maintaining safe, trouble-free operation of the tool. Be sure the tool is receiving adequate lubrication, as failure to lu-

bricate can create hazardous operating conditions resulting from

excessive wear. Be sure that the air supply lines and connectors are of proper size

to provide a sufficient quantity of air to the tool. Safety guards shall be in good functional condition. Damaged,

bent or severely worn guards shall be replaced. A guard which has been subjected to a wheel failure is likely to be internally

weakened and shall not be reused.

REPLACE GUARD.

When replacement parts are necessary, consult drawing containing the part for identification.

Always use clean, dry air. Dust, corrosive fumes and/or excessive moisture can damage the motor of an air tool. An air line filter can greatly increase the life of an air tool. The filter removes rust,

scale, moisture and other debris from the air lines. Low air pressure (less than 90 p.s.i.g.) reduces the speed of the air tool. High air pressure (more than 90 p.s.i.g.) raises performance beyond the rated capacity of the tool and could cause injury. Shown below is a typical piping arrangement.

MAIN LINES 3 TIMES

AIR

TOOL

INLET SIZE

BRANCH LINE 2 TIME

AIR TOOL INLET SIZE

Tool maintenance and repair shall be performed by authorized,

COMPRESSOR

DRAIN REGULARLY

The grinder models listed in the model identification table above arefurnished with collet assembly 41753-3 (1/4”capacity) as standard equipment and are intended for

and

use with mounted wheels and shall not be used with othertype grinding wheels unless a proper wheel guard, recommended by the grinder manufacturer, is attached to thegrinder. See ”Grinding Wheel Mounting Instructions”, page 5. Other size collet inserts

(1/8” or 3/16”) or other collet assemblies listed on page 9 can

furnished

the above listed models.

The above listed grinder models that are furnished with optional arbor assembly 36934, must also be equipped with wheel guard 44451 (2” maximum wheel diameter).

Arbor assembly 36934 is for The above listed grinder models that are furnished with optional cone wheel adapter 37292-( ) are for use with types 16, 17, 18, 18R and 19 cone and plug wheels and

shall not be used with other type grinding wheels unless a proper wheel guard, recommended by the grinder manufacturer, is attached to the grinder. See “Grinding Wheel Mounting Instructions”, page 5 and “Accessories” section, page 9.

USe

with type 1 non-threaded grinding wheels only. See “Grinding Wheel Mounting Instructions”, page 5 and “Accessories”, page 9.

OPERATION

Safe and efficient operation of your ARO grinder can best be attained by observing proper operating, inspection and maintenance procedures. Allow only competent qualified people to operate grinder and subject each grinder to a regular inspection and maintenance procedure. The qualified grinder operator must be carefully instructed in the safe operation and use of the grinder, including a study of the manufacturer’s literature. The grinder operator should have a good attitude regarding safety.

Operator Safety Equipment. The grinder operator shall wear safety goggles or face shield at all times the grinder is turned on. Other protective clothing shall be

worn if necessary for spark deflection. Respirators shall be used in poorly ventilated areas. Adjacent personnel shall be protected from grinding sparks and wheel fragments by protective barriers.

Starting and Stopping. Before starting a grinder, the operator shall make sure that no one is in the unguarded plane of wheel rotation. Upon mounting a new wheel,

grinder shall be run at operating speed with the safety guard in place or in a protected enclosure for at least one minute before applying the wheel to the work. Check speed and balance of wheel.

Before a grinder is put down, the throttle shall be released and the wheel shall come to a stop. Tool rests, hangers or balancers are recommended.

Use only wheels with adequate speed ratings. The maximum operating speed Use recommended guard.

marked on the wheel, blotters or packaging, shall equal or exceed the rated speed stamped on the grinder.

At each wheel change, Aro recommends the free speed be checked by competent authorized personnel, using a good reliable tachometer, to assure that the maximum tool speed is lower than manufacturers rated speed for the wheel to be

used. A speed check shall never be made with grinding wheel on the grinder. Grinders shall not be operated at a speed exceeding its rated speed. If a wire brush should ever be used with this tool; insure the speed rating of the

brush is greater than the speed of the tool the brush is to be used with and insure

the brush conforms to applicable safety standards. Be certain the brush is compatible with mounting of the tool. Always use a wheel guard.

SAFETY GUIDE FOR PORTABLE GRINDER USE

Some

of the more

Do always handle and store wheels in a careful manner (handle with due regard, grinding wheels are fragile). Grinding wheels shall be stored in protective racks or containers and protected from moisture and temperature extremes. Do visually inspect all wheels before mounting for possible damage In transit. Do check maximum operating speed established for the wheel against grinders speed. Do check mounting flanges for correct size and design (see “Accessorles”

page 11. Do use mounting blotters supplied with wheels where applicable.

Do be sure tool is kept in first class operating condition.

Do always use a guard covering at least 1/2 of the grinding wheel. Do allow newly mounted wheels, with guard in place, to run at operating speed for at least one minute before grinding. Do always wear safety glasses or goggles when grinding. Do always observe all safety rules when operating or handling portable grinders.

common causes

of wheel

breakage are: Improper

mounting of the wheels, improper speeds, abusive operation and careless handling.

and

Don’t use a wheel that has been dropped. Don’t force a wheel onto the spindle or alter the size of the mounting. If the wheel won’t fit the spindle, get one that will. Don’t use mounting flanges on which the bearing surfaces are not clean and flat, Don’t tighten the mounting nut excessively. lighten only sufficiently to drive the wheel and prevent slippage. Don’t grind on the side of the wheel unless wheel is specifically designed for that purpose. Don’t start the grinder until the wheel guard is in place. Don’t jam the wheel Into the work.

Don’t stand directly in front of a grinding wheel whenever a grinder Is started. Don’t grind material for which the wheel is not designed. Grinding In grooves may be hazardous.

DON’T

+ 7 hidden pages