DEWALT D25901 (01) PDF MANUAL

DEWALT D25901 (01) PDF SUMMARY:

How do I maintain work area safety when operating power tools?

Keep the work area clean and well-lit. Avoid operating power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Keep children and bystanders away while operating a power tool.

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What are the electrical safety guidelines I should follow?

Ensure that power tool plugs match the outlet and never modify the plug in any way. Avoid body contact with earthed or grounded surfaces. Do not expose power tools to rain or wet conditions. Do not abuse the cord and keep it away from heat, oil, sharp edges, or moving parts. When operating a power tool outdoors, use an extension cord suitable for outdoor use and if operating in a damp location use a ground fault circuit interrupter (GFCI) protected supply.

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What are the personal safety guidelines I should follow?

Stay alert and watch what you are doing, and use common sense when operating a power tool. Do not use a power tool while tired or under the influence of drugs, alcohol, or medication. Use personal protective equipment, such as a dust mask, non-skid safety shoes, hard hat, or hearing protection. Prevent unintentional starting by ensuring the switch is in the off position before connecting to a power source or battery pack.

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How should I properly carry and handle power tools?

Do not carry power tools with your finger on the switch. Remove any adjusting key or wrench before turning the power tool on. Do not overreach, and maintain proper footing and balance at all times. Dress properly by not wearing loose clothing or jewelry, and keep hair, clothing, and gloves away from moving parts.

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What devices should I use and properly connect for safety?

If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used.

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How do I properly use and care for my power tool?

Do not force the power tool, use the correct power tool for your application. Ensure the switch turns the power tool on and off, and disconnect the plug from the power source and/or battery pack before making adjustments, changing accessories, or storing the tool. Store idle power tools out of the reach of children.

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How do I maintain my power tools and cutting tools?

Regularly check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the tool’s operation. Keep cutting tools sharp and clean.

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What considerations should I take into account when using the power tool?

Use the power tool, accessories, and tool bits in accordance with the instructions, taking into account the working conditions and the work to be performed.

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What are the additional safety instructions for Demolition Hammers?

Wear ear protectors. Use auxiliary handles supplied with the tool. Hold the power tool by insulated gripping surfaces when performing an operation where the cutting accessory may contact hidden wiring or its own cord. Be certain that the material being drilled does not conceal electric or gas service.

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How do I ensure a firm grip and secure the chisel before operation?

Keep a firm grip on the tool at all times with both hands. Ensure the chisel is secured in place before operating the tool.

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How do I prepare the tool in cold-weather conditions?

In cold-weather conditions or when the tool has not been used for a longer period of time, let the tool run with no load for several minutes before use.

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What precautions should I take when working above ground level?

When working above ground level, ensure the area below is clear.

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How to operate and handle the tool after finishing work?

Do not touch the chisel or the parts close to the chisel immediately after operation, as they may be extremely hot. Always direct the power cable to the rear, away from the chisel. Do not operate this tool for long periods of time to prevent vibration harm. Use gloves and take frequent breaks.

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What should I do with the air vents of the tool?

Air vents often cover moving parts and should be avoided as loose clothes, jewelry, or long hair can be caught in moving parts.

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What kind of extension cord is safe to use?

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.

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How to choose the appropriate extension cord?

Refer to the table to choose the correct size depending on cord length and nameplate ampere rating. If in doubt, use the next heavier gauge.

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

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What safety equipment should always be worn?

Always use safety glasses. Also, use a face or dust mask if the cutting operation is dusty. Always wear certified safety equipment, including ANSI Z87.1 eye protection, ANSI S12.6 (S3.19) hearing protection, and NIOSH/OSHA/MSHA respiratory protection.

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How do I prevent exposure from dust?

Work in a well-ventilated area, and work with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

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What measures should I take to limit dust exposure?

Avoid prolonged contact with dust. Wear protective clothing and wash exposed areas with soap and water. Direct particles away from the face and body.

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What is the purpose of the Soft Start Feature on the D25901 and D25941 models?

The soft start feature allows the impact rate to build up more slowly, preventing the chisel or point from “bouncing” around on the masonry when starting up.

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What is the function of the Active Vibration Control on the D25901 and D25941?

The active vibration control neutralizes rebound vibration from the hammer mechanism, lowering hand and arm vibration, allowing for more comfortable use.

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What does the Electronic Impact Energy Control Dial on the D25901 do?

It offers optimal tool control for precise chiseling with minimal break-out when chiseling soft or brittle materials, and allows the use of smaller accessories without risk of breakage.

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How do I prepare the tool before making adjustments or repairs?

Turn the unit off and disconnect it from the power source before installing and removing accessories, before adjusting, or when making repairs.

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How can I ensure the tool remains clean when installing the bits?

To reduce dust contamination in the tool, keep dust and debris away from the bit and the beat piece.

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How do I insert and remove SDS-max® accessories on the D25899 and D25901?

Clean and grease the chisel shank. Insert the chisel shank into the tool holder/sleeve, press and turn slightly until it snaps. Pull on the chisel to check if it is properly locked. To remove, pull back the tool holder/sleeve and pull the chisel out.

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How to install accessories for model D25901 and D25899?

Insert the chisel shank into the tool holder/sleeve (E). Press and turn the chisel slightly until the sleeve snaps into position. Pull on the chisel to check if it is properly locked. The hammering function requires the chisel to be able to move axially several centimeters when locked in the tool holder.

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How to remove accessories for model D25901 and D25899?

Pull back the tool holder/sleeve (E) and pull the chisel out of the tool holder.

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How do I insert and remove 19 mm Hex accessories on the D25941?

Clean and grease the chisel shank. Pull back the tool holder/sleeve, align the groove with the yellow marker and insert the chisel shank. Release the locking sleeve. Pull on the chisel to check if it’s properly locked. To remove, pull back the tool holder/sleeve and pull the chisel out.

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How do I index the chisel position?

Insert the chisel. Rotate the chisel position collar in the direction of the arrow until the chisel is in the desired position.

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How do I set the Electronic Impact Energy Control Dial on the D25901?

Turn the dial to the desired level. The higher the number, the greater the impact energy. Settings range from 1 (low) to 7 (full power).

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How do I determine the correct setting on the Electronic Impact Energy Control Dial?

The required setting is a matter of experience. For example, when chiselling soft, brittle materials or when minimum break-out is required, set the dial to 1 or 2 (low). When breaking harder materials, set the dial to 7 (full power).

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How do I fit and adjust the side handle?

Unscrew the side handle clamp knob. Slide the side handle assembly onto the machine, locating the steel ring in the mounting area. Adjust the side handle to the desired angle and position, then lock it by securely tightening the clamp knob.

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How much pressure should be applied to the tool?

Apply a pressure of approximately 44-66 lbs. (20-30 kg.) to the tool. Excessive force does not speed up chiseling but decreases tool performance.

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How do I switch the tool on and off?

To turn the tool on, set the on/off switch to position 1. To turn the tool off, set the on/off switch to position 0.

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What should I ensure for safety when using the tool for demolition?

Ensure that the cutting edge does not show discoloration caused by too much pressure.

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What kind of accessories can I use with the tool?

Various types of chisels are available as an option.

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How should I prepare the accessory prior to installing?

Select the appropriate chisel. Clean and grease its shank.

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How to use the tool for continuous operation?

Hold the tool at both handles and switch on. The tool now runs in continuous operation. Always switch off the tool when work is finished and before unplugging.

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How to properly select and set up the appropriate chisel?

Select the appropriate chisel. Clean and grease its shank. Insert the chisel and check whether it is properly locked. Set the desired impact energy level, then fit and adjust the side handle.

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How do I perform maintenance on the tool?

Turn the unit off and disconnect it from the power source before installing and removing accessories, before adjusting, or when making repairs.

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Does the tool require lubrication?

The power tool requires no additional lubrication.

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How do I clean the tool?

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.