Dynabrade 52418 User Manual
Parts Page Reorder No. PD09•52
Effective October, 2009
.7 hp Vacuum Cut-Off Tool
For ø3" (76 mm) Mounted Diamond Wheels
Air Tool Manual – Safety, Operation and Maintenance
Model:
52418 – 20,000 RPM
– 3/8" Collet
– Accepts 3" Mounted
Diamond Wheels with 3/8"Mandrel
– 1in. O.D. Vacuum Port
SAVE THIS DOCUMENT, EDUCATE ALL PERSONNEL
SAFETY INSTRUCTIONS
Carefully Read all instructions before operating or servicing any Dynabrade
®
Abrasive Power Tool.
Products offered by Dynabrade are not to be modified, converted or otherwise altered from the original design without expressed written consent from Dynabrade, Inc.
Tool Intent: .7hp 3" Vacuum Cut-Off Tool is ideal for trimming fiberglass, silicone, quartz, stone, composites, ceramic and carbon graphite. An appropriate external vacuum source is required that is
suitable for material being processed.
Do Not use tool for anything other than its intended applications.
This power tool is not intended for use in potentially explosive atmospheres and is not insulated against contact with electrical power.
Training: Proper care, maintenance, and storage of your air tools will maximize their performance.
• Employer's Responsibility – Provide .7 hp 3" Vacuum Cut-Off Tool operators with safety instructions and training for safe use of tools and accessories.
Accessory Selection:
• USE ONLY 3" Mounted Diamond Impregnated Steel Wheels with 3/8" diameter mandrel with 2 in. minimum length.
• DO NOT use router bits.
• Abrasive/accessory RPM (speed) rating MUST be approved for AT LEAST the tool RPM rating.
• Before mounting an accessory, visually inspect for defects. Do not use defective accessories.
• USE ONLY recommended accessories. Reference Dynabrade catalog and this tool manual.
SAFETY LEGEND
G
Read and understand this tool manual before operating your air tool. Follow all safety rules for the protection of operating personnel as well as adjacent areas. Always operate, inspect and maintain this tool in accordance with the American National Standards
Institute (ANSI) Safety Code for Portable Air Tools – B186.1. For additional safety information, refer to Safety Requirements for the
Use, Care and Protection of Abrasive Wheels – ANSI B7.1, Code of Federal Regulation – CFR 29 Part 1910, European Committee for
Standards (EN) Hand Held Non-Electric Power Tools – Safety Requirements and applicable State and Local Regulations.
Some dust created by sanding, grinding, drilling, and other construction activities contain chemicals known to cause cancer, birth
defects or other reproductive harm. Some examples of these chemicals are:
• Lead from lead-based paints
• Crystalline silica from bricks and cement and other masonry products
• 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 to these chemicals: work in a well
ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.
FIND THE MOST CURRENT OFFERING OF SUPPORT DOCUMENTS AND ACCESSORIES @ WWW.DYNABRADE.COM
Read and understand tool manual before
work starts to reduce risk of injury to
operator, visitors, and tool.
Eye protection must be worn at all times,
eye protection to conform to ANSI Z87.1.
Respiratory protection to be used when exposed to
contaminants that exceed the applicable threshold
limit values required by law.
Air line hazard, pressurized supply lines and flexible
hoses can cause serious injury. Do not use damaged,
frayed or deteriorated air hoses and fittings.
Practice safety requirements. Work alert,
have proper attire, and do not operate tools under
the influence of alcohol or drugs.
Ear protection to be worn when exposure to sound,
exceeds the limits of applicable Federal, State or
local statues, ordinances and/or regulations.
WARNIN
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
Diamond Impregnated Steel Wheel Mounting
• With power source disconnected from the air tool, mount recommended accessory into collet assembly.
• The mandrel diameter of the abrasive/accessory must insert freely, but not loosely, all the way to the base
of the collet body before tightening the collet cap. Use wrenches provided.
Caution: The mandrel shall be inserted to the full depth of the gripping jaws of the collet.
At least 13mm of the mandrel length shall be inserted into the collet to prevent excessive overhang.
DO NOT extend the mounted wheel below the shroud base plate. Refer to accessory manufacturer's
instructions for proper overhang.
Warning: Sliding the accessory’s mandrel out from the collet insert creates an “OVER HANG” condition.
This practice is NOT recommended, reducing the free speed of the tool by reducing the air pressure
must be done to avoid cutting tool breakage and serious injury. Improper mounting of an accessory may
cause excessive vibration levels or damage to the accessory.
To Tool Station
Closed Loop Pipe System
(Sloped in the direction of air flow)
Ball
Valve
Ball
Valve
Filter
Regulator
Lubricator
Air Flow
Drain
Valve
Drain
Valve
Air Compressor
and Receiver
Drain Valve
Air Hose
Air Flow
Refrigerated
Air Dryer
2
Filter
Regulator
Lubricator
90 PSIG
(6.2 Bar)
SAFETY INSTRUCTIONS CONT.
• Follow tool specifications before choosing size and type of accessory.
• Only use recommended fittings and air line sizes. Air supply hoses and air hose accessories must have a minimum working pressure of 150 PSIG (10 Bars, g) or 150 percent of the maximum
pressure produced in the system, whichever is higher. (See tool Machine Specifications table.)
OPERATING INSTRUCTIONS
Warning: Always wear personal protective equipment. Operator of tool is responsible for following: accepted eye, face, respiratory, hearing and body protection.
Warning: Always use wheel shroud. Make sure it is positioned to best protect the operator and make sure it is securely fastened. Wheel shrouds that are worn, damaged or have been subject to a
wheel breaking must be replaced.
Caution: Hand, wrist and arm injury may result from repetitive work, motion and overexposure to vibration.
• Keep hand and clothing away from working end of the air tool, working end of air tool has the potential of cutting and severing.
• Keep slot width constant or increased.
• DO NOT side grind with cut-off wheels.
• If wheels get jammed in cut slot, shut off the cut-off tool, ease wheel from slot. Check that the wheel is still correctly secured and not damaged before continuing the operation.
• Note the tool run down time. Control the tool as if the tool were under power.
• Release the throttle lever in case of an interruption of the energy supply.
Operation: Be sure that any loose clothing, hair and all jewelry is properly restrained.
• Secure inlet bushing on air tool with a wrench before attempting to install the air fitting to avoid damaging housing assembly.
• BEFORE MOUNTING A WHEEL, after all tool repairs and whenever a cut-off tool is issued for use, check tool RPM (speed) with tachometer with air pressure set at 90 PSIG while the tool is
running. If tool is operating at a higher speed than the RPM marked on the tool housing, or operating improperly, the tool must be serviced and corrected before use.
Caution: Tool RPM must never exceed abrasive/accessory RPM rating. Check accessory manufacturer for details on maximum operating speed or special mounting instructions.
• Connect air tool to power source. Be careful NOT to depress throttle lever in the process. Do not expose air tool to inlet pressure above 90 PSIG or (6.2 Bars).
Caution: After installing the accessory, make sure that no one is in the unguarded plane of the wheel before starting the cut-off tool. IN A PROTECTED AREA, test run the wheel at a reduced speed to
check for good balance. Gradually increase tool speed. DO NOT USE if tool vibration is excessive. Correct cause, and retest to insure safe operation. Test wheel at its free speed (RPM) in a
protected area for at least one minute before applying the wheel to the work.
• DO NOT let the airline impede operating motion.
• Make sure that work area is uncluttered, and visitors are at a safe range from the tools and debris.
• Air tools are not intended for use in explosive atmospheres and are not insulated for contact with electric power sources.
• Use a vise or clamping device to hold work piece firmly in place.
• Do not apply excessive force on tool or apply “rough” treatment to it.
• Always work with a firm footing, posture and proper lighting.
• Ensure that sparks and debris resulting from work does not create a hazard.
• This tool has rear exhaust. Exhaust may contain lubricants, vane material, bearing grease, and other materials flushed thru the tool.
Warning: Cutting certain materials can create explosive dust. It is the employers responsibility to notify the user of acceptable dust levels.
• Cutting can cause sparks which can cause fires or explosions. It is the users responsibility to make sure the work area is free of flammable materials.
Report to your supervisor any condition of the tool, accessories, or operation you consider unsafe.
Air System
1 DROP/MIN.
20 SCFM
LUBRICATOR SETTING
•
Dynabrade Air Power Tools are designed to
operate at 90 PSIG (6.2 Bar/620 kPa) maximum
air pressure at the tool inlet, when the tool is
running. Use recommended regulator to control
air pressure.
•
Ideally the air supply should be free of moisture.
To facilitate removing moisture from air supply, the
installation of a refrigerated air dryer after the
compressor and the use of drain valves at each
tool station is recommended.
➤
➤
➤
➤
➤
➤
90 PSIG MAX
(6.2 Bar)
Air Tool
Correctly Mounted Side View
Collet Cap
Collet Body
Collet Insert
Diamond Impregnated Steel Mounted Wheel
Maintenance Instructions
Important: To keep tool safe a Preventative Maintenance Program is recommended whenever portable power tools are used. The program should include
inspection of air supply lines, air line pressure, proper lubrication and repair of tools. Refer to ANSI B186.1 for additional maintenance information.
•
Use only genuine Dynabrade replacement parts to insure quality. To order replacement parts, specify Model#, Serial# and RPM of your air tool.
•
All Dynabrade Rotary Vane air tools must be used with a Filter-Regulator-Lubricator to maintain all warranties. Dynabrade recommends the following:
10681 Air Filter-Regulator-Lubricator (FRL) – Provides accurate air pressure regulation and two stage filtration of water contaminants. Operates 55
SCFM/1,558 LPM @ 100 PSIG with 1/2" NPT female ports.
•
Dynabrade recommends one drop of air lube per minute for each 20 SCFM (example: if the tool specification states 40 SCFM, set the drip rate on the
filter-lubricator to 2 drops per minute). Dynabrade Air Lube (P/N 95842: 1 pt 473 ml) is recommended.
Routine Preventative Maintenance:
•
Check free speed of tool regularly and after service using a tachometer without accessory mounted.
•
Make a simple check of vibration level after each service.
•
Periodically remove the collet insert and clean the inside diameter and slots from debris to keep accessories secure and reduce vibration.
•
Inspect collet regularly for nicks, cuts, sharp edges and runout. Replace damaged or worn inserts with genuine Dynabrade inserts.
•
Inspect shroud for wear or damage. Shrouds that are bent and severely worn or subject to a wheel breakage must be replaced.
•
Inspect diamond impregnated steel mounted wheel before mounting. Do not use mounted wheels that are damaged or warped.
•
Check diamond impregnated steel mounted wheel - speed rating. Rating of wheel must be greater than the tool speed marked on the housing.
•
If diamond impregnated steel mounted wheel damage occurs, investigate to determine the cause and correct before issuing tool for work.
•
Mineral spirits are recommended when cleaning the tool and parts. Do not clean tool or parts with any solvents or oils containing acids, esters,
ketones, chlorinated hydrocarbons or nitro carbons.
•
DO NOT clean or maintain tools with chemicals that have a low flash point (example: WD-40
®
).
•
A Motor Tune-Up Kit (P/N 96529) is available which includes high wear and medium wear motor parts.
•
Air tool labels must be kept legible at all times, if not, reorder label(s) and replace. User is responsible for maintaining specification information i.e.:
Model #, S/N, and RPM. (See Assembly Breakdown)
•
Blow air supply hose out prior to initial use.
•
Visually inspect air hoses and fittings for frays, visible damage and signs of deterioration. Replace damaged or worn components.
•
Refer to Dynabrade's Warning/Safety Operating Instructions Tag (Reorder No. 95903) for safety information.
After maintenance is performed on tool, add a few drops of Dynabrade Air Lube (P/N 95842) to the air line and start the tool a few times to lubricate air motor.
Check for tool vibration before mounting abrasive wheel accessory.
Handling and Storage:
•
Use of tool rests and storage hangers are recommended.
•
Protect tool inlet from debris (see Notice below).
•
DO NOT carry tool by air hose or near the tool throttle lever.
•
Protect diamond impregnated steel mounted wheel from exposure to water, solvents, freezing temperature and extreme temperature changes.
– See Manufacturer's Instructions –
•
DO NOT USE diamond impregnated steel mounted wheels that have been dropped or show signs of warpage, cracks, nicks or other defects.
•
Store accessories in protective racks or compartments to prevent damage.
Notice
All Dynabrade motors use the highest quality parts and metals available and are machined to exacting tolerances. The failure of quality pneumatic motors
can most often be traced to an unclean air supply or the lack of lubrication. Air pressure easily forces dirt or water contained in the air supply into motor
bearings causing early failure. It often scores the cylinder walls and the rotor blades resulting in limited efficiency and power. Our warranty obligation is
contingent upon proper use of our tools and cannot apply to equipment which has been subjected to misuse such as unclean air, wet air or a lack of
lubrication during the use of this tool.
3
Lifetime Warranty
All Dynabrade portable pneumatic power tools are rigorously inspected and performance tested in our factory before shipping to our customers. If a Dynabrade
tool develops a performance problem and an inherent defect is found during normal use and service, Dynabrade will warrant this tool against defects in
workmanship and materials for the lifetime of the tool. Upon examination and review at our factory, Dynabrade shall confirm that the tool qualifies for warranty
status, and will repair or replace the tool at no charge to the customer. Normally wearable parts and products are NOT covered under this warranty. Uncovered
items include bearings, contact wheels, rotor blades, regulators, valve stems, levers, shrouds, guards, O-rings, seals, gaskets and other wearable parts.
Dynabrade’s warranty policy is contingent upon proper use of our tools in accordance with factory recommendations, instructions and safety practices. It shall not
apply to equipment that has been subjected to misuse, negligence, accident or tampering in any way so as to affect its normal performance. To activate lifetime
warranty, customer must register each tool at www.dynabrade.com. Dynabrade will not honor lifetime warranty on unregistered tools. A one-year warranty will be
honored on all unregistered portable pneumatic power tools. Lifetime warranty applies only to portable pneumatic tools manufactured by Dynabrade, Inc. in the
USA. Lifetime warranty applies only to the original tool owner; warranty is non-transferable.
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