Dewalt DWE4997NVS Instruction Manual - Page 9

Brake When the paddle switch is released the motor immediately turns off and electronically brakes stopping the accessory quickly. Kickback Brake™ When a severe pinch, stall, or bind-up event is sensed the electronic brake engages with maximum force to quickly stop the wheel, reduce the movement of the grinder, and shut the grinder off. Turn the unit on to restart tool. Constant Clutch™ When overloaded or stalled the motor torque is reduced. If load is reduced the torque and RPM will increase. If the tool is stalled for an extended amount of time it will shut-off and require the switch to cycle to restart. Variable Speed Dial (Fig. A) WARNING: Regardless of the speed setting, the rated speed of the accessory must be at least equal to the maximum speed marked on the power tool. The variable speed dial offers added tool control and enables the tool to be used at optimum conditions to suit the accessory and material. • Turn the dial 11 to the desired level. Turn the dial to the right for higher speed and to the left for lower speed. LED Indicator (Fig. A) The LED indicator 12 will remain lit green during normal activity, or blink in a pattern of red light to alert you a tool protection feature has been activated. Refer to the LED Guide at the back of this manual for explanations of blink patterns. ASSEMBLY AND ADJUSTMENTS WARNING: To reduce the risk of serious personal injury, turn unit off and disconnect it from power source before making any adjustments or removing/installing attachments or accessories. An accidental start-up can cause injury. Accessories (Fig. A) The capacity of the DWE4997NVS, DWE4997VS is 2" (50 mm) diameter. WARNING: Handle and store all abrasive wheels carefully to prevent damage from thermal shock, heat, mechanical damage, etc. Store in a dry protected area free from high humidity, freezing temperatures or extreme temperature changes. Mounting an Accessory (Fig. A) WARNING: Accessories must be rated at least equal to the maximum speed marked on the tool. Accessories running faster than their rated speed can break and fly apart. WARNING: Accessories must be within the capacity rating marked on the tool. Incorrectly sized accessories cannot be adequately controlled. WARNING: Do not use accessories with a mandrel length exceeding 2.0" (50 mm). Ensure that the English exposed mandrel length is no more than 1.0" (25 mm) after inserting accessory into collet. WARNING: Projectile hazard. Only use bits with shanks that match the installed collet. Smaller shank bits will not be secure and could become loose during operation. CAUTION: Never tighten the collet without first installing an accessory in it. Tightening an empty collet, even by hand, can damage the collet. This tool comes with a 1/4" (6.35 mm) collet 5 . A 1/8" reducing sleeve 6 is also available for use with 1/8" shaft accessories. 1. Hold the spindle 1 using the spindle lock 2 . 2. Loosen the collet nut 3 by turning it counterclockwise. 3. Insert the shank of the accessory into the collet 5 for accessories with 1/4" shaft. NOTE: Insert the reducing sleeve into the collet before the accessory shaft for use with 1/8" shaft accessories. 4. Securely tighten the collet using the larger spanner 4 provided. To remove the accessory, proceed in reverse order. When starting the tool (with a new or replacement wheel installed) hold the tool in a well protected area. If the wheel has an undetected crack or flaw, it should burst in less than one minute. Never start tool with a person in line with the wheel. This includes the operator. OPERATION WARNING: To reduce the risk of serious personal injury, turn unit off and disconnect it from power source before making any adjustments or removing/installing attachments or accessories. An accidental start-up can cause injury. Proper Hand Position (Fig. C) WARNING: To reduce the risk of serious personal injury, ALWAYS use proper hand position as shown. WARNING: To reduce the risk of serious personal injury, ALWAYS hold securely in anticipation of a sudden reaction. Proper hand position requires one hand on the tool body 14 , with the other hand on the neck of the die grinder 15 . Fig. C 15 14 7