DEWALT DCN660 - Cordless Impact Wrench / Driver Manual

Definitions: Safety Guidelines

The definitions below describe the level of severity for each signal word. Please read the manual and pay attention to these symbols.

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

NOTICE: Indicates a practice not related to personal injury which, if not avoided, may result in property damage.

General Power Tool Safety Warnings

Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE

The term "power tool" in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

WORK AREA SAFETY

1. Keep work area clean and well lit. Cluttered or dark areas invite accidents.
2. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
3. Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

ELECTRICAL SAFETY

1. Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.
2. Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
3. Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
4. Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
5. When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
6. If operating a power tool in a damp location is unavoidable, use a ground fault circuit interrupter (GFCI) protected supply. Use of a GFCI reduces the risk of electric shock.

PERSONAL SAFETY

1. Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.
2. Use personal protective equipment. Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.
3. Prevent unintentional starting. Ensure the switch is in the off position before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energizing power tools that have the switch on invites accidents.
4. Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.
5. Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
6. Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.
7. If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust-related hazards.

POWER TOOL USE AND CARE

1. Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
2. Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.
3. Disconnect the plug from the power source and/or the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
4. Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.
5. Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool's operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
6. Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
7. Use the power tool, accessories and tool bits, etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.

BATTERY TOOL USE AND CARE

1. Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
2. Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
3. 
   When battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws, or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
4. 
   Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.

SERVICE

a) Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.

Product Safety Warnings

• Always assume that the tool contains fasteners. Careless handling of the nailer can result in unexpected firing of fasteners and personal injury.
• Do not point the tool towards yourself or anyone nearby. Unexpected triggering will discharge a fastener causing an injury.
• Do not actuate the tool unless the tool is placed firmly against the workpiece. If the tool is not in contact with the workpiece, the fastener may be deflected away from your target.
• Disconnect the tool from the power source when the fastener jams in the tool. While removing a jammed fastener, the tacker may be accidentally activated if it is plugged in.
• Use caution while removing a jammed fastener. The mechanism may be under compression and the fastener may be forcefully discharged while attempting to free a jammed condition.
• 
  Do not use this nailer for fastening electrical cables. It is not designed for electric cable installation and may damage the insulation of electric cables thereby causing electric shock or fire hazards.

Additional Product Safety Warnings

When using any nailer, all safety precautions, as outlined below, should be followed to avoid the risk of death or serious injury. Read and understand all instructions before operating the tool.

NEVER spray or in any other way apply lubricants or cleaning solvents inside the tool. This can seriously affect the life and performance of the tool.

• Hold tool by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring. Contact with a "live" wire will make exposed metal parts of the tool "live" and shock the operator.
• Actuating tool may result in flying debris, collation material, or dust which could harm operator's eyes. Operator and others in work area MUST wear safety glasses with side shields. These safety glasses must conform to ANSI Z87.1 requirements (approved glasses have "Z87" printed or stamped on them. It is the employer's responsibility to enforce the use of eye protection equipment by the tool operator and other people in the work area.
  
• Always wear appropriate personal hearing and other protection during use. Under some conditions and duration of use, noise from this product may contribute to hearing loss.
• Disconnect battery pack from the tool when not in use. Always remove battery pack and remove fasteners from magazine before leaving the area or passing the tool to another operator. Do not carry tool to another work area in which changing location involves the use of scaffoldings, stairs, ladders, and the like, with battery pack connected. Do not make adjustments, perform maintenance or clear jammed fasteners while battery is in place.
• Do not remove, tamper with, or otherwise cause the tool, trigger, trigger lock-off, or contact trip to become inoperable. Do not tape or tie trigger or contact trip in the ON position. Do not remove spring from contact trip. Make daily inspections for free movement of trigger and contact trip. Uncontrolled discharge could result.
• Inspect tool before use. Do not operate a tool if any portion of the tool, trigger, trigger lock-off, or contact trip is inoperable, disconnected, altered, or not working properly. Damaged parts or missing parts should be repaired or replaced before use. Refer to Repairs.
• Do not alter or modify the tool in any way.
• Always assume that the tool contains fasteners.
• Do not point the tool at co-workers or yourself at any time. No horseplay! Work safe! Respect the tool as a working implement.
  
• Keep bystanders, children, and visitors away while operating a power tool. Distractions can cause you to lose control. When tool is not in use, it should be locked in a safe place, out of the reach of children.
• Do not carry the tool from place to place holding the trigger. Accidental discharge could result.
• Always use trigger lock-off when tool is not in immediate use. Using the trigger lock-off will prevent accidental discharge.
• Do not overreach. Maintain proper footing and balance at all times. Loss of balance may cause personal injury.
  
• Use the tool only for its intended use. Do not discharge fasteners into open air, concrete, stone, extremely hard woods, knots or any material too hard for the fastener to penetrate. Do not use the body of the tool or top cap as a hammer. Discharged fasteners may follow unexpected path and cause injury.
  
  
• Always keep fingers clear of contact trip to prevent injury from inadvertent release of the pusher
  
• Refer to the Maintenance and Repairs sections for detailed information on the proper maintenance of the tool.
• Always operate the tool in a clean, lighted area. Be sure the work surface is clear of any debris and be careful not to lose footing when working in elevated environments such as rooftops.
• Do not drive fasteners near edge of material. The workpiece may split causing the fastener to ricochet, injuring you or a co-worker. Be aware that the nail may follow the grain of the wood (shiner), causing it to protrude unexpectedly from the side of the work material. Drive the chisel point of the nail perpendicular to the grain to reduce risk of injury. (Fig. M)
  
  
  
• Do not drive nails onto the heads of other fasteners or with the tool at too steep an angle. Personal injury from strong recoil, jammed fasteners, or ricocheted nails may result.
  
• Keep hands and body parts clear of immediate work area. Hold workpiece with clamps when necessary to keep hands and body out of potential harm. Be sure the workpiece is properly secured before pressing the nailer against the material. The contact trip may cause the work material to shift unexpectedly.
• Do not use tool in the presence of flammable dust, gases or fumes. The tool may produce a spark that could ignite gases causing a fire. Driving a nail into another nail may also cause a spark.
  
• Keep face and body parts away from back of the tool cap when working in restricted areas. Sudden recoil can result in impact to the body, especially when nailing into hard or dense material.
  
• Grip tool firmly to maintain control while allowing tool to recoil away from work surface as fastener is driven. In Bump mode if contact trip is allowed to recontact work surface before trigger is released an unwanted fastener will be fired.
• Choice of triggering method is important. Check the manual for triggering options.

SEQUENTIAL/BUMP SELECTOR SWITCH

Sequential Action

• When using the tool in sequential mode mode, do not actuate the tool unless the tool is placed firmly against the workpiece.

Bump Action

• When using the tool in bump action, be careful of unin tentional double fires resulting from tool recoil. Unwanted fasteners may be driven if the contact trip is allowed to accidentally re-contact the work surface.

TO AVOID DOUBLE FIRES:

• Do not engage the tool against the work surface with a strong force.
• Allow the tool to recoil fully after each actuation.
• Use tool in sequential mode.

• When "bump" actuating the finish nailer, always keep tool in control. Inaccurate placement of tool can result in misdirected discharge of a fastener.
• Do not drive nails onto the heads of other fasteners. Strong recoil, jammed fasteners, or ricocheted nails may result. (Fig. M)
• Be aware of material thickness when using nailer. A protruding nail may cause injury.
• DEPTH ADJUSTMENT: To reduce risk of serious injury from accidental actuation when attempting to adjust depth, ALWAYS;
  • Remove battery pack.
  • Engage trigger lock.
  • Avoid contact with trigger during adjustments
• Do not drive nails blindly into walls, floors or other work areas. Fasteners driven into live electrical wires, plumbing, or other types of obstructions can result in injury.
  
• Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating power tools may result in serious personal injury.
• Air vents often cover moving parts and should be avoided. Loose clothes, jewelry or long hair can be caught in moving parts.

ALWAYS use safety glasses. Everyday eyeglasses are NOT safety glasses. Also use face or dust mask if cutting operation is dusty. ALWAYS WEAR CERTIFIED SAFETY EQUIPMENT:

• ANSI Z87.1 eye protection (CAN/CSA Z94.3),
• ANSI S12.6 (S3.19) hearing protection,
• NIOSH/OSHA/MSHA respiratory protection.

Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California 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, and
• 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.

• Avoid prolonged contact with dust from power sanding, sawing, grinding, drilling, and other construction activities. Wear protective clothing and wash exposed areas with soap and water. Allowing dust to get into your mouth, eyes, or lay on the skin may promote absorption of harmful chemicals.

Use of this tool can generate and/or disperse dust, which may cause serious and permanent respiratory or other injury. Always use NIOSH/OSHA approved respiratory protection appropriate for the dust exposure. Direct particles away from face and body.

Always wear proper personal hearing protection that conforms to ANSI S12.6 (S3.19) during use. Under some conditions and duration of use, noise from this product may contribute to hearing loss.

When not in use, place tool on its side on a stable surface where it will not cause a tripping or falling hazard. Some tools with large battery packs will stand upright on the battery pack but may be easily knocked over.

• The label on your tool may include the following symbols. The symbols and their definitions are as follows:

V	volts	A	amperes
Hz	hertz	W	watts
min	minutes	or AC	alternating current
or DC	direct current	or AC/DC	alternating or direct current
	Class I Construction (grounded)		Class II Construction (double insulated)
.../min	per minute	n0	no load speed
BPM	beats per minute	n	rated speed
IPM	impacts per minute		earthing terminal
RPM	revolutions per minute		safety alert symbol
sfpm	surface feet per minute		visible radiation
SPM	strokes per minute

Important Safety Instructions for All Battery Packs

When ordering replacement battery packs, be sure to include the catalog number and voltage. Consult the chart at the end of this manual for compatibility of chargers and battery packs.
The battery pack is not fully charged out of the carton. Before using the battery pack and charger, read the safety instructions below and then follow charging procedures outlined.

READ ALL INSTRUCTIONS

• Do not charge or use the battery pack in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Inserting or removing the battery pack from the charger may ignite the dust or fumes.
• NEVER force the battery pack into the charger. DO NOT modify the battery pack in any way to fit into a non-compatible charger as battery pack may rupture causing serious personal injury. Consult the chart at the end of this manual for compatibility of batteries and chargers.
• Charge the battery packs only in designated DeWALT chargers.
• DO NOT splash or immerse in water or other liquids.
• Do not store or use the tool and battery pack in locations where the temperature may reach or exceed 104°F (40°C) (such as outside sheds or metal buildings in summer). For best life store battery packs in a cool, dry location.
  NOTE: Do not store the battery packs in a tool with the trigger switch locked on. Never tape the trigger switch in the ON position.

Fire hazard. Never attempt to open the battery pack for any reason. If the battery pack case is cracked or damaged, do not insert into the charger. Do not crush, drop or damage the battery pack. Do not use a battery pack or charger that has received a sharp blow, been dropped, run over or damaged in any way (e.g., pierced with a nail, hit with a hammer, stepped on). Damaged battery packs should be returned to the service center for recycling.

Fire hazard. Do not store or carry the battery pack so that metal objects can contact exposed battery terminals. For example, do not place the battery pack in aprons, pockets, tool boxes, product kit boxes, drawers, etc., with loose nails, screws, keys, etc. Transporting batteries can possibly cause fires if the battery terminals inadvertently come in contact with conductive materials such as keys, coins, hand tools and the like. The US Department of Transportation Hazardous Material Regulations (HMR) actually prohibit transporting batteries in commerce or on airplanes (e.g., packed in suitcases and carry-on luggage) UNLESS they are properly protected from short circuits. So when transporting individual battery packs, make sure that the battery terminals are protected and well insulated from materials that could contact them and cause a short circuit.

SPECIFIC SAFETY INSTRUCTIONS FOR LITHIUM ION (Li-Ion)

• Do not incinerate the battery pack even if it is severely damaged or is completely worn out. The battery pack can explode in a fire. Toxic fumes and materials are created when lithium ion battery packs are burned.
• If battery contents come into contact with the skin, immediately wash area with mild soap and water. If battery liquid gets into the eye, rinse water over the open eye for 15 minutes or until irritation ceases. If medical attention is needed, the battery electrolyte is composed of a mixture of liquid organic carbonates and lithium salts.
• Contents of opened battery cells may cause respiratory irritation. Provide fresh air. If symptoms persist, seek medical attention.

Battery liquid may be flammable if exposed to spark or flame.

Important Safety Instructions for All Battery Chargers

SAVE THESE INSTRUCTIONS: This manual contains important safety and operating instructions for battery chargers.

• Before using the charger, read all instructions and cautionary markings on the charger, battery pack and product using the battery pack.

Shock hazard. Do not allow any liquid to get inside the charger. Electric shock may result.

To reduce the risk of injury, charge only DeWALT rechargeable battery packs. Other types of batteries may overheat and burst resulting in personal injury and property damage.

NOTICE: Under certain conditions, with the charger plugged into the power supply, the charger can be shorted by foreign material. Foreign materials of a conductive nature, such as, but not limited to, grinding dust, metal chips, steel wool, aluminum foil or any buildup of metallic particles should be kept away from the charger cavities. Always unplug the charger from the power supply when there is no battery pack in the cavity. Unplug the charger before attempting to clean.

• DO NOT attempt to charge the battery pack with any chargers other than the ones in this manual. The charger and battery pack are specifically designed to work together.
• 
  These chargers are not intended for any uses other than charging D_eWALT rechargeable batteries. Any other uses may result in risk of fire, electric shock or electrocution.
• Do not expose the charger to rain or snow.
• Pull by the plug rather than the cord when disconnecting the charger. This will reduce the risk of damage to the electric plug and cord.
• Make sure that the cord is located so that it will not be stepped on, tripped over or otherwise subjected to damage or stress.
• 
  Do not use an extension cord unless it is absolutely necessary. Use of improper extension cord could result in risk of fire, electric shock or electrocution.
• When operating a charger outdoors, always provide a dry location and use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
• An extension cord must have adequate wire size (AWG or American Wire Gauge) for safety. The smaller the gauge number of the wire, the greater the capacity of the cable, that is, 16 gauge has more capacity than 18 gauge. An undersized cord will cause a drop in line voltage resulting in loss of power and overheating. When using more than one extension to make up the total length, be sure each individual extension contains at least the minimum wire size. The following table shows the correct size to use depending on cord length and nameplate ampere rating. If in doubt, use the next heavier gauge. The lower the gauge number, the heavier the cord.

Minimum Gauge for Cord Sets
Ampere Rating		Volts	Total Length of Cord in Feet (meters)
		120 V	25 (7.6)	50 (15.2)	100 (30.5)	150 (45.7)
		240 V	50 (15.2)	100 (30.5)	200 (61.0)	300 (91.4)
More Than	Not More Than	AWG
0	6		18	16	16	14
6	10		18	16	14	12
10	12		16	16	14	12
12	16		14	12	Not Recommended

• Do not place any object on top of the charger or place the charger on a soft surface that might block the ventilation slots and result in excessive internal heat. Place the charger in a position away from any heat source. The charger is ventilated through slots in the top and the bottom of the housing.
• Do not operate the charger with a damaged cord or plug.
• Do not operate the charger if it has received a sharp blow, been dropped or otherwise damaged in any way. Take it to an authorized service center.
• 
  Do not disassemble the charger; take it to an authorized service center when service or repair is required. Incorrect reassembly may result in a risk of electric shock, electrocution or fire.
• Disconnect the charger from the outlet before attempting any cleaning. This will reduce the risk of electric shock. Removing the battery pack will not reduce this risk.
• NEVER attempt to connect 2 chargers together.
• The charger is designed to operate on standard 120V household electrical power. Do not attempt to use it on any other voltage. This does not apply to the vehicular charger.

Chargers

Your tool uses a DeWALT charger. Be sure to read all safety instructions before using your charger. Consult the chart at the end of this manual for compatibility of chargers and battery packs.

Charging Procedure

1. Plug the charger into an appropriate outlet before inserting the battery pack.
2. Insert the battery pack (N) into the charger, as shown, making sure the pack is fully seated in charger. The red (charging) light will blink continuously, indicating that the charging process has started.
   
3. The completion of charge will be indicated by the red light remaining ON continuously. The pak is fully charged and may be used at this time or left in the charger.

Indicator Light Operation

DCB101, DCB102, DCB103
	PACK CHARGING
	PACK CHARGED
	HOT/COLD DELAY
	PROBLEM PACK OR CHARGER
DCB107, DCB112, DCB113, DCB115
	PACK CHARGING
	PACK CHARGED
	HOT/COLD DELAY

Charge Indicators

This charger is designed to detect certain problems that can arise. Problems are indicated by the red light flashing at a fast rate. If this occurs, re-insert the battery pack into the charger. If the problem persists, try a different battery pack to determine if the charger is working properly. If the new pack charges correctly, then the original pack is defective and should be returned to a service center or other collection site for recycling. If the new battery pack elicits the same trouble indication as the original, have the charger and the battery pack tested at an authorized service center.

HOT/COLD DELAY

DCB101, DCB102, DCB103
These chargers have a hot/cold delay feature. When the charger detects a battery that is too hot or too cold, it automatically starts a delay, suspending charging. The red light flashes long, then short while in the hot/cold delay mode.
Once the battery has reached an optimum temperature, the charger will automatically resume the charging procedure. This feature ensures maximum battery life.

DCB107, DCB112, DCB113, DCB115
These chargers have a hot/cold delay feature. When the charger detects a battery that is too hot or too cold, it automatically starts a delay, suspending charging. The red light will continue to blink, but a yellow indicator light will be illuminated during this suspension.
Once the battery has reached an optimum temperature, the yellow light will turn off and the charger will automatically resume the charging procedure. This feature ensures maximum battery life.

LEAVING THE BATTERY PACK IN THE CHARGER

The charger and battery pack can be left connected with the charge indicator showing Pack Charged.

WEAK BATTERY PACKS: Weak batteries will continue to function but should not be expected to perform as much work.

FAULTY BATTERY PACKS
DCB101, DCB102, DCB103
These chargers will not charge a faulty battery pack. The charger will indicate faulty battery pack by refusing to light or by displaying problem pack or charger.
NOTE: This could also mean a problem with a charger.

DCB107, DCB112, DCB113, DCB115
These chargers will not charge a faulty battery pack. The charger will indicate faulty battery pack by refusing to light.
NOTE: This could also mean a problem with a charger.

Wall Mounting

DCB107, DCB112, DCB113, DCB115
These chargers are designed to be wall mountable or to sit upright on a table or work surface.
If wall mounting, locate the charger within reach of an electrical outlet. Mount the charger securely using drywall screws at least 1" (25.4 mm) long, screwed into wood to an optimal depth leaving approximately 7/32" (5.5 mm) of the screw exposed.

Important Charging Notes

1. Longest life and best performance can be obtained if the battery pack is charged when the air temperature is between 65°F and 75°F (18° – 24°C). DO NOT charge the battery pack in an air temperature below +40°F (+4.5°C), or above +104°F (+40°C). This is important and will prevent serious damage to the battery pack.
2. The charger and battery pack may become warm to the touch while charging. This is a normal condition, and does not indicate a problem. To facilitate the cooling of the battery pack after use, avoid placing the charger or battery pack in a warm environment such as in a metal shed or an uninsulated trailer.
3. A cold battery pack will charge at about half the rate of a warm battery pack. The battery pack will charge at that slower rate throughout the entire charging cycle and will not return to maximum charge rate even if the battery pack warms.
4. If the battery pack does not charge properly:
   1. Check operation of receptacle by plugging in a lamp or other appliance;
   2. Check to see if receptacle is connected to a light switch which turns power off when you turn out the lights;
   3. Move the charger and battery pack to a location where the surrounding air temperature is approximately 65°F – 75°F (18° – 24°C);
   4. If charging problems persist, take the tool, battery pack and charger to your local service center.
5. The battery pack should be recharged when it fails to produce sufficient power on jobs which were easily done previously. DO NOT CONTINUE to use under these conditions. Follow the charging procedure. You may also charge a partially used pack whenever you desire with no adverse effect on the battery pack.
6. Foreign materials of a conductive nature such as, but not limited to, grinding dust, metal chips, steel wool, aluminum foil, or any buildup of metallic particles should be kept away from charger cavities. Always unplug the charger from the power supply when there is no battery pack in the cavity. Unplug the charger before attempting to clean.
7. Do not freeze or immerse the charger in water or any other liquid.

Shock hazard. Don't allow any liquid to get inside the charger. Electric shock may result.

Do not submerge the battery pack in any liquid or allow any liquid to enter the battery pack. Never attempt to open the battery pack for any reason. If the plastic housing of the battery pack breaks or cracks, return to a service center for recycling.

Storage Recommendations

1. The best storage place is one that is cool and dry, away from direct sunlight and excess heat or cold.
2. For long storage, it is recommended to store a fully charged battery pack in a cool dry place out of the charger for optimal results.

NOTE: Battery packs should not be stored completely depleted of charge. The battery pack will need to be recharged before use.

SAVE THESE INSTRUCTIONS FOR FUTURE USE

COMPONENTS

1. Trigger
2. Trigger lock-off
3. Depth adjustment wheel
4. Headlights/Low battery/Stall indicator
5. Jam clearing latch
6. Contact trip
7. Magazine
8. Pusher
9. Bump/sequential selector switch
10. Reversible suspension hook
11. No-mar pad
12. No-mar pad storage
13. Stall release lever
14. Battery
15. Nail depth indicator

TOOL SPECIFICATIONS

TOOL SPECIFICATIONS
Firing Mode	Selectable: Sequential or Bump
Voltage	20
Height	11.8" (300 mm)
Width	3.6" (91 mm)
Length	11.8" (300 mm)
Weight (with battery)	6 lbs. (2.72 kg)
Magazine Angle	20˚
Loading Capacity	Up to 110 nails
NAIL SPECIFICATIONS
Angled Nail Lengths	1-1/4" to 2-1/2" (32 mm to 65 mm)
Shank Diameters	16 gauge
Nail Stick Angles	20˚

INTENDED USE

The DCN660 Cordless Finish Nailer has been designed for driving nails into wooden workpieces.
DO NOT use under wet conditions or in presence of flammable liquids or gases.
This cordless framing nailer is a professional power tool. DO NOT let children come into contact with the tool. Supervision is required when inexperienced operators use this tool.

Lock the trigger lock-off in the locked position, disconnect battery pack from tool and remove nail strips from magazine before making adjustments or personal injury may result.

OPERATION

To reduce the risk of serious personal injury, turn tool off and remove the battery pack before making any adjustments or removing/installing attachments or accessories. An accidental start-up can cause injury.

Read the section titled Product Safety Warnings at the beginning of this manual. Always wear eye and ear protection when operating this tool. Keep the nailer pointed away from yourself and others. For safe operation, complete the following procedures and checks before each use of the nailer.

1. Wear proper eye, hearing and respiratory protection.
2. Remove battery pack from tool.
3. Lock the pusher in the back position and remove all nail strips from the magazine.
4. Check for smooth and proper operation of contact trip and pusher assemblies. Do not use tool if either assembly is not functioning properly. NEVER use a tool that has the contact trip restrained in the up position.
5. NEVER use a tool that has damaged parts.

To reduce the risk of personal injury, disconnect battery pack from tool before performing maintenance, clearing a jammed nails, leaving work area, moving tool to another location or handing the tool to another person.

Installing and Removing the Battery Pack

NOTE: For best results, make sure your battery pack is fully charged.

To install the battery pack into the tool handle, align the battery pack with the rails inside the tool's handle and slide it into the handle until the battery pack is firmly seated in the tool and ensure that it does not disengage.
To remove the battery pack from the tool, press the release button (M) and firmly pull the battery pack out of the tool handle. Insert it into the charger as described in the charger section of this manual.

FUEL GAUGE BATTERY PACKS
Some DeWALT battery packs include a fuel gauge which consists of three green LED lights that indicate the level of charge remaining in the battery pack.
The fuel gauge is an indication of approximate levels of charge remaining in the battery pack according to the following indicators:

	75–100% charged
	51–74% charged
	< 50% charged
	Pack needs to be charged

To actuate the fuel gauge, press and hold the fuel gauge button (X). A combination of the three green LED lights will illuminate designating the level of charge left. When the level of charge in the battery is below the usable limit, the fuel gauge will not illuminate and the battery will need to be recharged.

NOTE: The fuel gauge is only an indication of the charge left on the battery pack. It does not indicate tool functionality and is subject to variation based on product components, temperature and end-user application.

For more information regarding fuel gauge battery packs, please contact call 1-800-4-DeWALT (1-800-433-9258) or visit our website www.dewalt.com.

Mode Selection

Always wear proper eye [ANSI Z87.1 (CAN/CSA Z94.3)] and ANSI S12.6 (S3.19) hearing protection when operating tool.

The DeWALT cordless nailers are assembled in accordance with the ANSI Standard SNT101-2002.
The finish nailer is capable of firing nails using bump actuation or sequential actuation. If you would like to have the bump actuation mode disabled, have the tool serviced by an authorized D_eWALT service center. Before operating this tool, look at the selector switch to determine the actuation mode. Read all instructions before selecting actuation mode.

Keep fingers AWAY from trigger when not driving nails to avoid accidental firing. NEVER carry tool with finger on trigger. In bump mode tool will fire a nail if contact trip is bumped while trigger is depressed.

SEQUENTIAL ACTUATION

Use sequential actuation mode for intermittent nailing where very careful and accurate placement and depth control is desired. The sequential actuation mode provides the maximum delivery of power for driving the longest nails.

To operate the nailer in sequential actuation mode:

1. Slide the selector switch to expose the single nail icon .
   
2. Fully depress nosepiece against the work surface (motor will start).
3. Pull trigger (nail will drive into work surface).
4. Release trigger.
5. Lift nosepiece off work surface.
6. Repeat steps 2 through 4 for next application.

NOTICE: The contact trip needs to be depressed followed by a trigger pull for each nail followed by a release of both the contact trip and trigger after each nail.

BUMP ACTION

Bump action is intended for rapid nailing on flat, stationary surfaces and typically most effective for applications that require driving shorter nails.
When the tool is set in the bump actuation mode, two methods of tool operation are available: place actuation and bump actuation.
Slide the selector switch to expose the triple nail icon .

To operate the tool using the PLACE ACTUATION method:

A nail will fire each time the trigger is depressed as long as the contact trip remains depressed.

1. Depress the contact trip against the work surface.
2. Depress the trigger.

To operate the tool using the BUMP ACTUATION method:

1. Depress the trigger.
2. Push the contact trip against the work surface. As long as the trigger is depressed, the tool will fire a nail every time the contact trip is depressed. This allows the user to drive multiple nails in sequence.

Do not keep trigger depressed when tool is not in use. Keep the trigger lockoff in the locked position when the tool is not in use.

When the tool's motor is running, pulling the trigger or depressing the contact trip will cause a nail to fire.

Preparing the Tool

NEVER spray or in any other way apply lubricants or cleaning solvents inside the tool. This can seriously affect the life and performance of the tool.

NOTE: The battery pack is not fully charged out of the carton. Follow instructions outlined (see Charging Procedures).

1. Read the Safety Instruction section of this manual.
2. Wear eye and ear protection.
3. Ensure magazine is empty of all fasteners.
4. Check for smooth and proper operation of contact trip and pusher assemblies. Do not use tool if either assembly is not functioning properly. NEVER use a tool that has the contact trip restrained in the actuated position.
5. Keep tool pointed away from yourself and others.
6. Insert fully charged battery pack.

Using the Trigger Lock-off

To reduce the risk of serious personal injury, do not keep trigger depressed when tool is not in use. Keep the trigger lock-off switch LOCKED when the tool is not in use.

To reduce the risk of serious personal injury, lock off trigger, disconnect battery pack from tool and remove nails from magazine before making adjustments.

Each DeWALT nailer is equipped with a trigger lock-off (B) which when pushed to the right as shown in figure below, prevents the tool from firing a nail by locking the trigger and bypassing power to the motor.

When the trigger lock-off is pressed to the left, the tool will B be fully operational. The trigger lock-off should always be locked off whenever any adjustments are made or when tool is not in immediate use.

NOTICE: Do not store tool with battery pack installed. To prevent damage to the pack and to ensure best battery life, store battery packs out of the tool or charger in a cool, dry location.

Loading the Tool

Keep the tool pointed away from yourself and others. Serious personal injury may result.

Never load nails with the contact trip or trigger activated. Personal injury may result.

Always remove battery pack before loading or unloading nails. Serious personal injury may result.

LOAD AND DRAW METHOD

1. Insert fasteners into the rear of the magazine (G).
2. Pull pusher (H) back until the nail follower falls behind the nails.
   
3. Release the pusher.

Keep fingers clear of pusher to prevent injury.

UNLOADING THE TOOL

The trigger lock-off should always be locked off whenever any adjustments are made or when tool is not in use.

1. Pull and hold the pusher to the bottom of the magazine.
2. Tip the tool up until the nails slide freely out the back of the magazine. Release the pusher.
3. Open the jam clear door on the nosepiece to verify there are no nails remaining.

Adjusting Depth

The depth that the fastener is driven can be adjusted using the depth adjustment wheel (C) on the side of the tool.

To reduce risk of serious injury from accidental actuation when attempting to adjust depth, ALWAYS:

• Remove battery pack.
• Engage trigger lock-off.
• Avoid contact with trigger during adjustments.

1. To drive the nail shallower , rotate the depth adjustment wheel (C) away from the nose of the nailer.
   
2. To sink a nail deeper , rotate the depth adjustment wheel (C) toward the nose of the nailer.

Headlights

There is a headlight (D) located on each side of the nailer. Headlights turn on upon battery insertion, activation of the trigger, or depressing the contact trip. The lights will automatically shut off after 20 seconds unless tool remains in use.

NOTE: These headlights are for lighting the immediate work surface and are not intended to be used as flashlights.

LOW BATTERY INDICATOR: The left-side headlight will flash four consecutive times and then shut down to indicate low battery.

JAMMED NAIL INDICATOR: The right-side headlight will flash continually if a nail becomes jammed in the nosepiece (see Clearing a Jammed Nail).

Clearing a Jammed Nail

If a nail becomes jammed in the nosepiece, keep the tool pointed away from you and follow these instructions to clear:

1. Remove battery pack from tool and engage the trigger lock-off.
2. Pull the pusher back and remove any loaded nails.
3. Lift the jam clearing latch (E) then pull up to open front door (O).
   
4. Remove bent nail, using pliers if necessary.
5. If driver blade is in the down position, cycle stall release lever (M) using enough force to fully slide it to the other end of the slot in housings.
6. Close the front door and engage the latch pin under the two arms (N) on the nosepiece. Push latch until it locks in place.
7. Reinsert battery pack.
   NOTE: The tool will disable itself and not reset until the battery pack has been removed and reinserted.
8. Reinsert nails into magazine (see Loading the Tool).

NOTE: Should nails continue to jam frequently in O nosepiece, have tool serviced by an authorized DeWALT service center.

Cold Weather Operation

When operating tools at temperatures below freezing:

1. Keep tool as warm as possible prior to use.
2. Actuate the tool 5 or 6 times into scrap lumber before using.

Hot Weather Operation

Tool should operate normally. However, keep tool out of direct sunlight as excessive heat can deteriorate bumpers and other rubber parts resulting in increased maintenance.

Suspension Hook

The DeWALT cordless nailers include an integrated suspension hook (J) and can be attached to either side of the tool to accommodate left- or right-handed users.
If the hook is not desired at all, it can be removed from the tool.

TO REMOVE SUSPENSION HOOK

1. Remove battery pack from tool.
2. To switch the tool from right- to left-hand usage simply remove the screw (P) from the opposite side of the tool and reassemble on the other side.
3. Replace battery pack.

Remove nails from magazine before making any adjustments or servicing this tool. Failure to do so may result in serious injury.

Disconnect battery pack from tool before making any adjustments, changing accessories, servicing, or moving the tool. Such preventative safety measures reduce the risk of starting the tool accidentally.

When not in use, place tool on its side on a stable surface where it will not cause a tripping or falling hazard. Some tools with large battery packs will stand upright on the battery pack but may be easily knocked over.

MAINTENANCE

To reduce the risk of injury, turn unit off and disconnect it from power source before installing and removing accessories, before adjusting or when making repairs. An accidental start-up can cause injury.

Daily Maintenance Chart
ACTION WHY HOW	Clean magazine, pusher, and contact trip mechanism. Permits smooth operation of magazine, reduces wear, and prevents jams. The use of oils, lubricants periodically or solvents is not recommended as they tend to attract debris.
ACTION WHY HOW	Before each use, check to insure all screws, nuts and fasteners are tight and undamaged. Prevents jams and premature failure of tool parts. Tighten loose screws or other fasteners using the appropriate Allen wrench or screwdriver.

Cleaning

Blow dirt and dust out of all air vents with clean, dry air at least once a week. To minimize the risk of eye injury, always wear ANSI Z87.1 approved eye protection when performing this.

Never use solvents or other harsh chemicals for cleaning the non-metallic parts of the tool. These chemicals may weaken the plastic materials used in these parts. Use a cloth dampened only with water and mild soap. Never let any liquid get inside the tool; never immerse any part of the tool into a liquid.

CHARGER CLEANING INSTRUCTIONS

Shock hazard. Disconnect the charger from the AC outlet before cleaning. Dirt and grease may be removed from the exterior of the charger using a cloth or soft nonmetallic brush. Do not use water or any cleaning solutions.

Lubrication

NEVER spray or in any other way apply lubricants or cleaning solvents inside the tool. This can seriously affect the life and performance of the tool.

DeWALT tools are properly lubricated at the factory and are ready for use. However, it is recommended that, once a year, you take or send the tool to a certified service center for a thorough cleaning and inspection.

Accessories

Since accessories, other than those offered by DeWALT, have not been tested with this product, use of such accessories with this tool could be hazardous. To reduce the risk of injury, only DeWALT recommended accessories should be used with this product.

Recommended accessories for use with your tool are available at extra cost from your local dealer or authorized service center. If you need assistance in locating any accessory, please contact DeWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286, call 1-800-4-DeWALT (1-800-433-9258) or visit our website: www.dewalt.com.

Repairs

To reduce the risk of serious personal injury, remove nails from magazine before making any adjustments or servicing this tool.

The charger and battery pack are not serviceable.

To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustment (including brush inspection and replacement) should be performed by a DeWALT factory service center, a DeWALT authorized service center or other qualified service personnel. Always use identical replacement parts. Refer to the Troubleshooting Guide at the end of this section.

Register Online

Thank you for your purchase. Register your product now for:

• WARRANTY SERVICE: Registering your product will help you obtain more efficient warranty service in case there is a problem with your product.
• CONFIRMATION OF OWNERSHIP: In case of an insurance loss, such as fire, flood or theft, your registration of ownership will serve as your proof of purchase.
• FOR YOUR SAFETY: Registering your product will allow us to contact you in the unlikely event a safety notification is required under the Federal Consumer Safety Act.

Register online at www.dewalt.com/register.

Three Year Limited Warranty

For further detail of warranty coverage and warranty repair information, visit www.dewalt.com or call 1-800-4-DeWALT (1-800-433-9258).

Troubleshooting Guide

MANY COMMON PROBLEMS CAN BE SOLVED EASILY BY UTILIZING THE CHART BELOW. FOR MORE SERIOUS OR PERSISTENT PROBLEMS, CONTACT A DeWALT SERVICE CENTER OR CALL 1-(800)-4-DEWALT.

TO REDUCE THE RISK OF SERIOUS PERSONAL INJURY, ALWAYS DISCONNECT BATTERY PACK FROM TOOL BEFORE ALL REPAIRS

SYMPTOM	CAUSE	FIX
Tool doesn't turn on (Headlights don't turn on)	Tool internal electronics not reset	Remove battery, wait 3 seconds and reinsert
	Low battery charge or damaged battery	Charge or replace battery
	Terminals are dirty or damaged	See authorized service center
	Bent contact trip	See authorized service center
	Damaged internal electronics	See authorized service center
Tool doesn't actuate (Headlights on, motor does not run)	Motor stops running after 4 seconds	Normal operation; release trigger or contact trip and redepress
	Contact trip or trigger not depressed	See instruction manual
	Damaged trigger	See authorized service center
	Bent contact trip	See authorized service center
	Damaged internal electronics	See authorized service center
	Tool in sequential mode and only trigger being actuated.	Change mode or depress contact trip in sequential mode.
Tool doesn't actuate (Left headlight flashes 4 times)	Low battery charge or damaged battery	Charge or replace battery
Tool doesn't actuate (Right headlights flashes continuously)	Jammed fastener	Remove the battery, clear the jammed fastener, (push driver blade back using the stall release lever) and reinsert battery pack
	Jammed mechanism	See authorized service center
Tool doesn't actuate (Headlights on, motor runs)	Damaged internal electronics	See authorized service center
Tool doesn't actuate (Headlights on, motor runs, driver blade stuck down)	Damaged return system	Replace return system; see authorized service center
	Debris in nosepiece	Clean nosepiece
	Damaged driver/return assembly	Replace driver/return assembly; see authorized service center
Tool operates, but does not drive the fastener fully	Low battery charge or damaged battery	Charge or replace battery
	Depth adjustment set too shallow	Rotate depth adjustment wheel to a deeper setting
	Tool not firmly applied to workpiece	See instruction manual
	Material and fastener length too rigorous an application	Choose appropriate material or fastener length
	Damaged or worn driver blade tip	Replace driver/return assembly; see authorized service center
	Damaged or worn driver/return assembly	Replace driver/return assembly; see authorized service center
Tool operates, but no fastener driven	No fasteners in magazine	Load fasteners into magazine
	Wrong size or angle fasteners	Use only recommended fasteners
	Debris in nosepiece	Clean nosepiece
	Debris in magazine	Clean magazine
	Worn magazine	Replace magazine; see authorized service center
	Damaged or worn driver blade	Replace driver/return assembly; see authorized service center
	Damaged pusher spring	Replace spring; see authorized service center
Jammed fastener	Wrong size or angle fasteners	Use only recommended fasteners
	Damaged or worn driver blade	Replace driver/return assembly; see authorized service center
	Material and fastener length too rigorous an application	Material or fastener length inappropriate
	Low battery charge or damaged battery	Charge or replace battery
	Debris in nosepiece	Clean nosepiece
	Debris in magazine	Clean magazine
	Worn magazine	Replace magazine; see authorized service center
	Worn or damaged pusher spring	Replace spring; see authorized service center

If you have questions or comments, contact us.
1-800-4-DeWALT • www.dewalt.com

Documents / Resources

References

• DEWALT® Power Tools Official Site | Guaranteed Tough®
• Sign in & Create Account | DEWALT

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download DEWALT DCN660 - Cordless Impact Wrench / Driver Manual