FLEX FX1551A 24V 1 Inch Rotary Hammer User Manual

June 6, 2024
FLEX

FLEX logo FX1551A 24V 1 Inch Rotary Hammer
User Manual

FLEX FX1551A 24V 1 Inch Rotary Hammer

SAFETY SYMBOLS

The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols and the explanations with them deserve your careful attention and understanding. The symbol
warnings do not, by themselves, eliminate any danger. The instructions and warnings they give are no substitutes for proper accident prevention measures.

Be sure to read and understand all safety instructions in this Owner’s Manual, including all safety alert symbols such as “DANGER,” “WARNING,” and “CAUTION” b efore using this tool. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious personal injury.

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

| This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.
| DANGER indicates a hazardous situation that, if not avoided, will result in death or serious injury.
| WARNING indicates a hazardous situation that, if not avoided, could result in death or serious injury.
| CAUTION, used with the safety alert symbol, indicates a hazardous situation that, if not avoided, will result in minor or moderate injury.

Damage Prevention and Information Messages
These inform the user of important information and/or instructions that could lead to equipment or other property damage if they are not followed. Each message is preceded by the word “NOTICE”, as in the example below:

NOTICE: Equipment and/or property damage may result if these instructions are not followed.

The operation of any power tool can result in foreign objects being thrown into your eyes, which can result in severe eye damage. Before beginning power tool operation, always wear safety goggles or safety glasses with side shields and a full face shield when needed. We recommend a Wide Vision Safety Mask for use over eyeglasses or standard safety glasses with side shields. Always use eye protection which is marked to comply with ANSI Z87.1.

GENERAL POWER TOOL SAFETY WARNINGS

Read all safety warnings, instructions, illustrations, and specifications provided with this power tool. Failure to follow all instructions listed below 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

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

Electrical safety

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 the risk of electric shock.

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.

Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
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.

When operating a power tool outdoors, use an extension cord suitable for outdoor use. The use of a cord suitable for outdoor use reduces the risk of electric shock.
If operating a power tool in a damp location is unavoidable, use a ground fault circuit interrupter (GFCI) protected supply. The use of a GFCI reduces the risk of electric shock.

Personal safety

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.

Use personal protective equipment. Always wear eye protection. Protective equipment such as a dust mask, non-skid safety shoes, hard hat or hearing protection used for appropriate conditions will reduce personal injuries.

Prevent unintentional starting. Ensure the switch is in the off- position before connecting to a 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.

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.
Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
Dress properly. Do not wear loose clothing or jewelry. Keep your hair and clothing away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.
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.
Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a  second.

Power tool use and care

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 at which it was designed.
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.
Disconnect the plug from the power source and/or remove the battery pack, if detachable, 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.
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.
Maintain power tools and accessories. 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.
Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
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.
Keep handles and grasping surfaces dry, clean, and free from oil and grease. lippery handles and grasping surfaces do not allow for safe handling and control of the tool in unexpected situations.

Battery tool use and care

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.

Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.

When the 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.

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.

Do not use a battery pack or tool that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behavior resulting in fire, explosion or risk of injury.

Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 265 °F may cause an explosion.

Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.

Service

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.

Never service damaged battery packs.
Service of battery packs should only be performed by the manufacturer or authorized service providers.

SAFETY WARNINGS FOR HAMMER

  • Wear ear protectors when impact drilling. Exposure to noise can cause hearing loss.
  • Hold the power tool by insulated gripping surfaces, when performing an operation where the cutting tool may contact hidden wiring. Cutting tools contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
  • Use auxiliary handle(s), if supplied with the tool. Loss of control can cause personal injury.
  • Secure the workpiece. Clamping devices or a vise will hold the workpiece in place better and more safely than holding it by hand.
  • Do not drill, fasten or break into existing walls or other blind areas where electrical wiring may exist. If this situation is unavoidable, disconnect all fuses or circuit breakers feeding this worksite.
  • Position yourself to avoid being caught between the tool or side handle and walls or posts. Should the bit become bound or jammed in the work, the reaction torque of the tool could crush your hand or leg.

Safety instructions when using long drill bits:

  • Never operate at a higher speed than the maximum speed rating of the drill bit. At higher speeds, the bit is likely to bend if allowed to rotate freely without contacting the workpiece, resulting in personal injury.

  • Always start drilling at low speed and with the bit tip in contact with the workpiece.

  • At higher speeds, the bit is likely to bend if allowed to rotate freely without contacting the workpiece, resulting in personal injury.

  • Apply pressure only in direct line with the bit and do not apply excessive pressure. Bits can bend causing breakage or loss of control, resulting in personal injury.

  • 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, cement, and other masonry products.
    – Arsenic and chromium from chemically treated lumber.

  • Your risk from these exposures varies, depending upon how often you do this type of work. To reduce your exposure to these chemicals:
    – Work in a well-ventilated area.
    – Work with approved safety equipment, such as 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 or eyes or to lie on the skin may promote the absorption of harmful chemicals.

SYMBOLS

IMPORTANT: Some of the following symbols may be used on your tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.

Symbol Name Designation/Explanation
V Volts Voltage
A Amperes Current
Hz Hertz Frequency (cycles per second)
W Watt Power
kg Kilograms Weight
min Minutes Time
s Seconds Time
Wh Watt-hours Battery capacity
Ah Ampere-hours Battery capacity
ø Diameter Size of drill bits, grinding wheels, etc.
n0 No-load speed Rotational speed, at no load
n Rated speed Maximum attainable speed
…  /min Revolutions or reciprocations per minute (rpm) Revolutions, strokes,

surface speed, orbits, etc. per minute
O| Off position| Zero speed, zero torque…
1,2,3,…
I, II, III,| Selector settings| Speed, torque, or position settings. A higher number means greater speed
| The infinitely variable selector with off| Speed is increasing from 0 sets
| Arrow| Action in the direction of arrow
| Alternating current (AC)| Type or a characteristic of current
| Direct current (DC)| Type or a characteristic of current
| Alternating or direct current (AC / DC)| Type or a characteristic of current
| Class II tool| Designates Double Insulated Construction tools.
| Protective earth| Grounding terminal
| Li-ion RBRC seal| Designates Li-ion battery recycling program
| Read the instructions| Alerts user to read manual
| Wear eye protection symbol| Alerts user to wear eye protection
| Always operate with two hands| Alerts user to always operate with two
hands
| Do not use the guard for cut-off operations| Do not use the guard for cut- off operations

SYMBOLS (CERTIFICATION INFORMATION)

Symbol Designation/Explanation
This symbol designates that this tool is listed by Underwriters

Laboratories.
| This symbol designates that this component is recognized by Underwriters Laboratories.
| This symbol designates that this tool is listed by Underwriters Laboratories, to the United States and Canadian Standards.
| This symbol designates that this tool is listed by the Canadian Standards Association.
| This symbol designates that this tool is listed by the Canadian Standards Association, to the United States and Canadian Standards.
| This symbol designates that this tool is listed by the Intertek Testing Services, to the United States and Canadian Standards.

FUNCTIONAL DESCRIPTIONS AND SPECIFICATIONS

Rotary Hammer

FLEX FX1551A 24V 1 Inch Rotary Hammer -Rotary Hammer

Model No. FX1551A
Rated Voltage 24 V d.c.
Chuck size/type SDS-plus
No-load Speed 0-980 /min (RPM)
Impact Rate 0-4350 /min (IPM)
Recommended working temperature -4 – 104°F (-20 – 40°C)
Recommended storage temperature < 122°F (< 50°C)

ASSEMBLY

Detach the battery pack from the tool before performing any assembly or adjustments, or changing accessories. Such preventive safety measures reduce the risk of starting the tool accidentally.

TO ATTACH/DETACH BATTERY PACK (FIG. 2)

Lock “OFF” the variable-speed trigger switch on the tool by placing the direction-of-rotation (forward/center-lock/reverse) selector in the center position before attaching or detaching the battery pack.

a. To attach the battery pack:

Align the raised rib on the battery pack with the grooves in the tool, and then slide the battery pack onto the tool.
NOTICE: WWhen attaching the battery pack to the tool, be sure that the raised rib on the battery pack aligns with the groove inside the tool and that the latches snap into place properly. Improper attachment of the battery pack can cause damage to internal components.

b. To detach the battery pack:

Depress the battery-release button located on the front of the battery pack to release the battery pack. Pull the battery pack out and remove it from the tool.

FLEX FX1551A 24V 1 Inch Rotary Hammer - ASSEMBLY

Battery tools are always in operating condition. Therefore, the direction-of- rotation (forward/ center-lock/reverse) selector should always be locked in the center position when the tool is not in use or while carrying the tool at your side.
Do not attempt to modify this tool or create accessories not recommended for use with this tool. Any such alteration or modification is misused and could result in a hazardous condition leading to possible serious injury.

INSTALLING AND REMOVING ACCESSORIES

Do not use bits with damaged shanks.

Your tool is equipped with an SDS-plus chuck that accepts SDS-plus accessories only. Lock the trigger switch “OFF” on the tool by placing the direction-of- rotation selector in the center position.

To install the accessory (Fig. 3):

  • Clean the accessory and lightly lubricate it before inserting it into the chuck.
  • Insert the accessory in the SDS-plus chuck while turning and pushing it until it engages. The accessory locks in position automatically.
  • Check to ensure that the accessory is locked in place.

FLEX FX1551A 24V 1 Inch Rotary Hammer - ASSEMBLY 3

To remove the accessory (Fig. 4):
Use protective gloves when removing the bit from the tool, or first allow the bit to cool down. The bit may be hot after prolonged use.

  • Pull back the locking sleeve and remove the accessory from the chuck.

FLEX FX1551A 24V 1 Inch Rotary Hammer - ASSEMBLY 4

CHANGING THE DETACHABLE CHUCK

The detachable chuck can be easily exchanged.

To remove the detachable chuck (Fig. 5):
Grasp the locking ring and pull it away from the tool. Remove the chuck from the tool.

FLEX FX1551A 24V 1 Inch Rotary Hammer - ASSEMBLY 5

To install the detachable keyless chuck (Fig. 6):

The SDS-plus chuck can be replaced with the detachable keyless 3-jaw chuck.
Grasp the locking ring of the 3-jaw chuck and pull it in the direction away from the tool.
Place the 3-jaw chuck on the spindle of the tool.
The four steel balls within the chuck should be aligned with the ball pits on the spindle.
The 3-jaw chuck is properly installed when the “click” can clearly be heard and the locking ring is directly locked in place.

FLEX FX1551A 24V 1 Inch Rotary Hammer - ASSEMBLY 6

AUXILIARY HANDLE (FIG. 7)
The tool must be supported with the auxiliary handle, which can be swiveled 360°.
To reposition and/or swivel the handle, rotate the handgrip to loosen it, move the handle to the desired position, and securely retighten the handgrip.

For safety and ease of operation, securely tighten the auxiliary handle by turning the handle clockwise before every use.

FLEX FX1551A 24V 1 Inch Rotary Hammer - ASSEMBLY 7

DEPTH ROD (FIG. 8)
a. Depress the upper part of the quick clamp and then inserts the depth rod through the opening.
b. Set the depth rod to the desired drilling depth.
c. Release the quick-clamp to lock the depth rod in position.

FLEX FX1551A 24V 1 Inch Rotary Hammer - ASSEMBLY
8 ADJUSTMENTS

DIRECTION-OF-ROTATION (FORWARD/ CENTER-LOCK/REVERSE) SELECTOR (FIG. 9)

After tool use, lock the direction-of-rotation selector in the “OFF” position (center-lock) to help prevent accidental starts and possible injury.

Your tool is equipped with a direction-of-rotation selector, located above the variable-speed trigger switch. This selector is used to change the direction of rotation of the bit and to lock the variable-speed trigger in the “OFF” (center-lock) position.

a. Position the direction-of-rotation selector to the far left of the tool to drill holes (Fig. 9).
b. Position the direction-of-rotation selector to the far right of the tool to remove drill bit from holes (Fig. 9).
c. Position the switch in the “OFF” (center-lock) position to help reduce the possibility of accidental starting when not in use.

FLEX FX1551A 24V 1 Inch Rotary Hammer - ADJUSTMENTS

NOTICE: To prevent gear damage, always allow the tool to come to a complete stop before changing the direction of rotation.
NOTICE: The tool will not run unless the direction-of-rotation selector is engaged fully to the left or to the right.

LED LIGHT (FIG. 10)

Your tool is equipped with an LED light, located on the base of the tool. This provides additional light on the surface of the workpiece for operation in lower-light areas.
The LED light will automatically turn on with a slight squeeze of the variable-speed trigger switch before the tool starts running and will turn off approximately 10 seconds after the variable-speed trigger switch is released.
The LED light will rapidly flash when the tool and/or battery pack becomes overloaded or too hot, and the internal sensors will turn the tool off. Rest the tool for a while or place the tool and battery pack separately under airflow to cool them.
The LED light will flash more slowly to indicate that the battery is at low battery capacity. Recharge the battery pack.

FLEX FX1551A 24V 1 Inch Rotary Hammer - ADJUSTMENTS 8

VIBRATION DAMPER (FIG. 11)
The vibration damper provides the operator with comfort without sacrificing power or performance.
The ideal force applied to the handle by the operator compresses the vibration damper slightly and allows the tool to work aggressively while the handle remains steady.
Excessive force applied to the handle compresses the vibration damper significantly and does not reduce the vibration efficiently.
Operators will be able to feel the difference and should adjust the force to the handle accordingly.

FLEX FX1551A 24V 1 Inch Rotary Hammer - VIBRATION
DAMPER

OPERATING INSTRUCTIONS

If any parts are damaged or missing, do not operate this product until the parts are replaced. Use of this product with damaged or missing parts could result in serious personal injury.

VARIABLE-SPEED TRIGGER SWITCH (FIG. 12)
Your tool is equipped with a variable-speed trigger switch. The tool can be turned “ON” or “OFF” by depressing or releasing the variable speed trigger switch.
The variable-speed trigger switch delivers higher speed with increased trigger pressure and lower speed with decreased trigger pressure.

To prevent accidental starting that could cause serious personal injury, always remove the battery pack from the tool when assembling parts.
This rotary hammer must be used only with the battery packs and chargers are listed below:

FLEX FX1551A 24V 1 Inch Rotary Hammer - Trigger Switch

Battery Pack Charger
2.5Ah 5Ah
FLEX FX0111 FLEX FX0121

NOTICE: Please refer to the battery pack and charger manuals for detailed operating information.

MODE SELECTOR (FIG. 13)
The operation of the gearbox for each application is set with the mode selector. To change among functions, depress the release button and rotate the selector to the desired
operating mode.

NOTICE: Do not operate the mode selector until the tool comes to a complete stop. Changing mode during rotation of the chuck can cause damage to the tool.

Rotary Drilling Mode|
---|---
Hammer Drilling Mode|
Working Angle Adjustment for Chisel Bits|
Hammering Mode|

FLEX FX1551A 24V 1 Inch Rotary Hammer - MODE SELECTOR

SETTING THE CHISEL POSITION (FIG. 14)

a. Move the mode selector to the symbol .
b. Turn the chisel until it is at the required angle.
c. Move the mode selector to the symbol .
Make sure that it audibly clicks into place.

FLEX FX1551A 24V 1 Inch Rotary Hammer - CHISEL
POSITION

DRILLING MASONRY (HAMMER DRILLING MODE)

For maximum performance, use carbide-tipped masonry bits when drilling holes in brick, concrete, etc., and set the mode selector to the hammer drilling mode .

a. Maintain a speed and a pressure that allows cutting without overheating the bit or drill.

Applying too much pressure will:

  • Overheat the tool.
  • Wear the bearings.
  • Bend or burn bits.
  • Produce off-center or irregular-shaped holes.

b. Apply light pressure and medium speed for best results in brick.
c. Apply additional pressure for hard materials, such as concrete.
d. Begin drilling at a very low speed to prevent the bit from slipping off the starting point.

USING KEYLESS 3-JAW CHUCK (FIG. 15)

The keyless 3-jaw chuck lets you use a variety of straight shank bits with this tool.

NOTICE: The tool must be set to the Rotary Drilling mode when using the 3-jaw chuck! Using the tool in Hammering mode can cause damage to the 3-jaw chuck and may cause bits to become loose and cause damage or injury.

FLEX FX1551A 24V 1 Inch Rotary Hammer - USING KEYLESS

a. Disconnect the battery pack and lock the trigger switch “OFF” on the tool by placing the direction-of-rotation selector in the center position.
b. Attach the keyless 3-jaw chuck as described in the “CHANGING THE DETACHABLE CHUCK” chapter earlier.
c. Turn the sleeve of the 3-jaw chuck to open the jaws on the chuck wide enough to fit a drill bit.
d. For small bits – insert the bit up to the flutes. For large bits – insert the bit as far as it will go.
e. Securely lock the bit in place by tightening the chuck sleeve.
f. Set the mode selector to rotary drilling!
g. Attach the battery pack and start drilling.

DRILLING

Always wear safety goggles or safety glasses with side shields during power tool operation or when blowing dust. If the operation is dusty, also wear a dust mask.

a. Check that the direction-of-rotation selector is at the correct setting (forward or reverse).
b. Secure the material to be drilled in a vise or with clamps to keep it from turning as the drill bit rotates.
c. Hold the drill firmly and place the bit at the point to be drilled.
d. Depress the variable-speed trigger switch to start the drill.
e. Move the drill bit into the workpiece, applying only enough pressure to keep the bit “biting”.
Do not force the drill or apply side pressure to elongate a hole. Let the tool do the work.
f. When drilling hard, smooth surfaces, use a center punch to mark the desired location of the hole. This will prevent the drill bit from slipping off-center as the hole is started.
g. When drilling metals, use light oil on the drill bit to keep it from overheating. The oil will prolong the life of the bit and increase the drilling efficiency.
h. If the bit jams in the workpiece or if the drill stalls, stop the tool immediately. Remove the bit from the workpiece and determine the reason for jamming.

There are two rules for drilling hard materials.
First, the harder the material, the greater the pressure you need to apply to the tool. Second, the harder the material, the slower the speed should be. If the hole to be drilled is fairly large, drill a smaller hole first, and then enlarge to the required size with a larger bit; it’s often faster in the long run.

**DRILLING WOOD (ROTARY DRILLING MODE) (FIG. 16)**

For maximum performance, use high-speed steel or brad-point bits for wood drilling, and set the mode selector to the rotary drilling mode .

a. Begin drilling at a very low speed to prevent the bit from slipping off the starting point.
b. Increase speed as the drill bit bites into the material.
c. When drilling “through” holes, place a block of wood behind the workpiece to prevent ragged or splintered edges on the backside of the hole (Fig. 16).

FLEX FX1551A 24V 1 Inch Rotary Hammer - DRILLING WOOD

NOTICE: Bits may overheat unless pulled out frequently to clear chips from flutes.

DRILLING METAL (ROTARY DRILLING MODE)

For maximum performance, use high-speed steel bits for drilling metal or steel, and set the mode selector to the rotary drilling mode .

a. When drilling metals, use light oil on the drill bit to keep it from overheating. The oil will prolong the life of the bit and increase the drilling action.
b. Begin drilling at a very low speed to prevent the bit from slipping off the starting point.
c. Maintain a speed and a pressure that allows cutting without overheating the bit. Applying too much pressure will:

  • Overheat the tool.
  • Wear the bearings.
  • Bend or burn bits.
  • Produce off-center or irregularly shaped holes.

DRILLING TILE (ROTARY DRILLING MODE) (FIG. 17)

For maximum performance, use high-speed steel bits for drilling in tile, and set the mode selector to the rotary drilling mode.

FLEX FX1551A 24V 1 Inch Rotary Hammer - ROTARY DRILLING
1

a. When drilling holes in tile, practice on a scrap piece to determine the best speed and pressure. Set the tool to rotary drilling mode.
b. Begin drilling at a very low speed to prevent the bit from slipping off the starting point.

NOTICE: Fig. 17 shows some tips for different drilling operations.

DUST EXTRACTION
To reduce exposure to silica dust when hammer-drilling in concrete and masonry, use this rotary hammer with FLEX Dust Extraction Attachment model FT151 connected to FLEX Dust Extractor / Vacuum model FX5221 (both sold separately) or another dust extractor with 99% or greater efficiency.
Refer to the manual for FLEX FT151 for more information.
Use a HEPA-filtered dust extractor/vacuum when cleaning holes.

FLEX FX1551A 24V 1 Inch Rotary Hammer - DUST
EXTRACTION

MAINTENANCE

To avoid serious personal injury, always remove the battery pack from the tool when cleaning or performing any maintenance.

SERVICE

Preventive maintenance performed by unauthorized personnel may result in misplacing of internal wires and components which could cause a serious hazard. We recommend that all tool services be performed by a FLEX Factory Service Center or Authorized FLEX Service Station.

GENERAL MAINTENANCE

When servicing, use only identical replacement parts. Use of any other parts could create a hazard or cause product damage. Periodically inspect the entire product for damaged, missing, or loose parts such as screws, nuts, bolts, caps, etc. Tighten securely all fasteners and caps and do not operate this product until all missing or damaged parts are replaced. Please contact customer service or an authorized service center for assistance.

CLEANING

The tool may be cleaned most effectively with compressed dry air. Always wear safety goggles when cleaning tools with compressed air. Ventilation openings and
switch levers must be kept clean and free of foreign matter. Do not attempt to clean by inserting pointed objects through openings.
Certain cleaning agents and solvents damage plastic parts. Some of these are gasoline, carbon tetrachloride, chlorinated cleaning solvents, ammonia, and household detergents that contain ammonia.

STORAGE
Store the tool indoors in a place that is inaccessible to children. Keep away from corrosive agents.

ACCESSORIES

The use of any other accessories not specified in this manual may create a hazard.

Depth rod
Auxiliary handle
Detachable keyless 3-jaw chuck

FLEX 5 YEAR LIMITED WARRANTY

Chervon North America, Inc. (“Seller”) warrants to the original purchaser only, that all FLEX 24V products will be free from defects in material or workmanship for a period of five years from the date of purchase when the original purchaser registers the product within 30 days from the date of original retail purchase and retains their receipt as proof of purchase. THE 5-YEAR LIMITED WARRANTY PERIOD IS CONDITIONED ON REGISTRATION OF THE PRODUCT WITHIN 30 DAYS OF PURCHASE AND IS ONLY APPLICABLE TO FLEX 24V TOOLS, BATTERIES, AND CHARGERS. If the original purchaser does not register their product within 30 days, the foregoing limited warranty will apply for a duration of three years. Product registration can be completed online at www.registermyflex.com.

24V Tools: 5-Year Limited Warranty with Registration
24V Batteries and Chargers: 5-Year Limited Warranty with Registration
Corded, 12V and 20V FLEX Legacy Products: 1-Year Limited Warranty, No Registration Benefit
Accessories and Attachments: No Warranty

SELLER’S SOLE OBLIGATION AND YOUR EXCLUSIVE REMEDY under this 5-Year Limited Warranty and, to the extent permitted by law, any warranty or condition implied by law, shall be the repair or replacement of parts, without charge, which are defective in material or workmanship and which have not been misused, carelessly handled, or repaired by persons other than a FLEX Authorized Service Dealer. This warranty does not cover part failure due to normal wear and tear. To make a claim under warranty, return the complete product, transportation prepaid, to any FLEX Authorized Service Dealer. For Authorized FLEX Service Dealers, please visit www.registermyflex.com or call 1-833-FLEX-496 (1-833-353-9496).

This 5-Year Limited Warranty does not apply to accessories, attachments, or parts.

Any implied warranties applicable to a product shall be limited in duration equal to the duration of the express warranties applicable to such product, as set forth in the first paragraph above. Some states in the U.S. and some Canadian provinces do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply.

FLEX is not responsible for direct, indirect, incidental, or consequential damages. Some U.S. states and Canadian provinces do not allow limitations on how long an implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply. This limited warranty gives you specific legal rights, and you may also have other rights which vary by state in the U.S. and by province in Canada.

This limited warranty applies only to products sold within the United States of America, Canada, and the commonwealth of Puerto Rico. For warranty coverage within other countries, contact your local FLEX dealer.

© Chervon North America, 1203 E. Warrenville Rd., Naperville, IL 60563
www.flexpowertools.com
www.registermyflex.com
1-833-FLEX-496 (1-833-353-9496)

Contact Us

833-FLEX-496
(833-3539-496)
www.Registermyflex.com

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