2
SAFETY INSTRUCTIONS
(Continued)
Accessory Selection:
• 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 accessories of the correct shaft size for the collet (example: 1/4" shaft = 1/4" collet).
• Use only recommended accessories. Reference Dynabrade catalog and this tool manual.
• 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) 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.
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 tool has a potential of cutting and severing.
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 AN ACCESSORY, after all tool repairs and whenever a .7 hp Die Grinder 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. Improper mounting of an accessory may cause excessive vibration levels or damage the accessory. Make sure no one is in the
unguarded plane of the accessory. Run tool for 1 minute of operating speed in a protected area.
• 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, before testing or use and/or after assembling tool, the .7 hp Die Grinder must be started 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 tool at
its free speed (RPM) in a protected area for at least one minute before applying the tool to the work.
• Release throttle lever when air supply is interrupted.
• 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.
• Tool exhaust may contain lubricants, vane material, bearing grease, and other materials flushed thru the tool.
Warning:
Grinding certain materials can create explosive dust. It is the employers responsibility to notify the user of acceptable dust levels.
• Grinding 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.
• DO NOT USE cut-off wheels or router bits on this tool.
• Always use dust extraction or suppression systems and personal protective equipment which are suitable for the materials being processed.
Report to your supervisor any condition of the tool, accessories, or operation you consider unsafe.
PROPER MOUNTING PROCEDURE
With Power Source Disconnected from the Tool, Mount Recommended Accessory
Collet Cap
Burr/Mounted Wheel
Collet Body
Mount Wheel/Burr Mandrel
Fully Inserted into Collet Insert.
Excessive Overhang Reduces Bit MOS,
Refer to ANSI B7.1 Standards
