NV50A1 - Stapler METABO - Free user manual and instructions
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| Brand | Metabo |
| Model | NV50A1 |
| Product Type | Pneumatic stapler (nailer) |
| Dimensions (L x H x D) | 250 mm x 264 mm x 119 mm |
| Weight | 1.9 kg (4.2 lbs) |
| Operating Pressure | 70 – 120 psi (4.9 – 8.3 bar) |
| Air Consumption | 0.035 ft³/cycle (0.99 L/cycle) at 100 psi |
| Air Connection | 3/8 NPT |
| Magazine Capacity | 400 nails (1 coil) |
| Trigger Type | Standard contact (bump action); sequential optional |
| Lubrication | Metabo HPT pneumatic tool oil |
| Daily Maintenance | Filter purge, magazine cleaning, lubrication |
| Safety | Wear safety glasses, do not point at yourself, do not use flammable gases |
| Spare Parts | Sequential trigger mechanism kit (No. 876762), oil (No. 877153, 874042, 876212) |
| Applications | Carpentry, wood construction, crates, pallets, furniture |
| Repairs | Only entrust to an authorized Metabo HPT service center |
| Warranty | Genuine parts recommended |
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USER MANUAL NV50A1 METABO
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Technical line drawing of a mechanical device with no visible text or symbolsNV83A2
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Technical illustration of a mechanical device with no visible text or symbolsNV65AC
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Technical line drawing of a mechanical device with no visible text or symbolsNV50A1
! DANGER
Improper use of this Nailer can result in death or serious injury!
This Manual contains important information about product safety.
Read and understand this Manual before operating the Nailer.
Never allow anyone who has not reviewed this manual to use the tool.
This manual should be stored in safe place.
DANGER
(Read this information carefully for your satisfaction and safety)
This metabo HPT nailer has a STANDARD CONTACT TRIP MECHANISM (Bounce Fire). An OPTIONAL SEQUENTIAL TRIP MECHANISM kit (SINGLE SHOT) is available as shown below.
| Models Order part number | |
| NR83A, NR83AA, NV83A, NV65AC, VH-650, NT65A2, NV50AA, NV50A1, NV50AP, NR83AA2, N5008AC, NV50AP2, NV83A2, N5024A | 876762 |
| NV45AB, NV45AB2, NV45AE 878226 | |
| NR90AC, NV65AH, NR90AA, NV45AC, NR90AC2 881973 | |
| NT65AA, NT65MA 880414 | |
| NV75AG 883991 |
To order in U.S. call toll free 1-800-706-7337. In Canada call toll free 1-800-970-2299.
THE STANDARD CONTACT TRIP MECHANISM (Bounce Fire) is for use where rapid fastener placement is desired and must be operated in accordance with the following "Methods of Operation".
This metabo HPT nailer is equipped with a push lever and does not operate unless the push lever is depressed (upward position). There are two methods of operation to drive nails with this Nailer.
- Intermittent operation (Trigger Fire)
- Continuous operation (Push Lever Fire)
(1) Intermittent operation (Trigger Fire)
① Position the nail outlet on the workpiece with finger off the trigger.
② Depress the push lever firmly until it is completely depressed.
③ Pull the trigger to drive a nail.
④ Remove finger from the trigger.
To drive another nail, move the nailer along the workpiece and repeat this procedure.
(2) Continuous operation (Push Lever Fire)
① Pull the trigger with the push lever pointing towards but not touching the workpiece.
② Depress the push lever against the workpiece to drive a nail.
③ Move the nailer along the workpiece with a bouncing motion. Each depression of the push lever will drive a nail.
As soon as the desired number of nails have been driven, remove finger from the trigger.
WARNING : Keep your finger off the trigger except during fastening operation, because serious injury could result if the push lever accidentally contacts you or others in work area.
WARNING : Keep hands and body away from the discharge area. The nailer with contact trip mechanism may bounce from the recoil of driving a fastener and unwanted subsequent fastener may be driven, possibly causing injury.
THE OPTIONAL SEQUENTIAL TRIP MECHANISM (SINGLE SHOT PARTS) is for use where precision fastener placement is desired and must be operated in accordance with the following "Method of Operation".
You must first depress the push lever (upward position) where you want to drive a nail and then pull the trigger. After the each nail is driven, completely release the trigger and lift the tool off the work surface. An OPTIONAL SEQUENTIAL TRIP MECHANISM may reduce the possibility of bodily injury to you or others in the work area. This is because it is less likely to drive an unwanted nail if you keep the trigger pulled and accidentally bump the push lever against yourself or others. An OPTIONAL SEQUENTIAL TRIP MECHANISM may also reduce the speed of operation compared to the standard contact trip mechanism.
NOTE : Both STANDARD CONTACT TRIP MECHANISM and OPTIONAL SEQUENTIAL TRIP MECHANISM are safe if used as described above and according to all warnings and instructions.
IMPORTANT SAFETY INFORMATION
Read and understand tool labels and all of the operating instructions, safety precautions and warnings in this manual before operating or maintaining this Nailer.
Failure to follow warnings could result in DEATH or SERIOUS INJURY
Most accidents that result from the operation and maintenance of Nailers are caused by the failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing a potentially hazardous situation before it occurs, and by observing appropriate safety procedures.
Basic safety precautions are outlined in the “SAFETY” section of this Manual and in the sections which contain the operation and maintenance instructions.
Hazards that must be avoided to prevent bodily injury or machine damage are identified by DANGERS and WARNINGS on the Nailer and in this Manual.
NEVER use this Nailer for applications other than those specified in this Manual.
DEFINITIONS OF SIGNAL WORDS
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury, or may cause machine damage.
NOTE emphasizes essential information.
EXPLANATION OF THE NAILING ACTION OF THE metabo HPT NAILER
○ CONTACT ACTUATION MECHANISM:
First, press the push lever against the wood; next, pull the trigger to drive the fastener.
First, pull the trigger; next, press the push lever against the wood to drive the fastener.
If the Trigger is held back, a nail will be driven each time the Push Lever is pressed against the wood.
SAFETY
IMPORTANT SAFETY INSTRUCTIONS - FOR USING NAILERS
INSTRUCTIONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS
- General
To reduce the risks of electric shock, fire, and injury to persons, READ ALL THE INSTRUCTIONS BEFORE USING THE TOOL.
DANGER
1. OPERATORS AND OTHERS IN WORK AREA MUST WEAR EYE PROTECTION (SAFETY GLASSES WITH SIDE SHIELDS).
When operating the Nailer, always wear safety glasses with side shields, and make sure others in worst safety glasses, too.
Safety glasses must conform to the requirements of American National Standards Institute, ANSI Z87.1 and provide protection against fl ying particles both from the front and side.
Ordinary eyeglasses do not provide adequate protection.
The employer must enforce the use of safety glasses by the Nailer operator and others in work area.
2. NEVER USE REACTIVE GASES OR OTHER BOTTLED GASES. EXPLOSION MAY OCCUR.
Never use reactive gases such as oxygen, combustible gases or any other bottled gases as a power source for the eNaller.
Use of the above gases is dangerous, as the Nailer will explode.
Use only clean, dry, regulated compressed air.
WARNING
3. NEVER POINT TOOL AT YOURSELF OR OTHERS IN WORK AREA.
Always assume that the Nailer contains fasteners.
Never point the Nailer toward yourself or others, whether it contains fasteners or not.
If fasteners are mistakenly driven, it can lead to severe injuries.
Never engage in horseplay with the Nailer.
Respect the Nailer as a working implement.
4. DO NOT PLACE FINGER ON TRIGGER AND KEEP FINGERS AWAY FROM TRIGGER WHEN NOT DRIVING FASTENERS TO AVOID ACCIDENTAL DISCHARGE.
Never carry the Nailer with finger on Trigger since you could drive a fastener unintentionally and injure yourself or someone else.
Always carry the Nailer by the handle only.
5. KNOW AND UNDERSTAND WHAT TRIGGER SYSTEM YOU ARE USING.
Read and understand section titled "METHODS OF OPERATION." (pages 18 – 19)
6. DO NOT MAKE CONTACT WITH SAFETY TIP (PUSH LEVER) WHEN NOT DRIVING FASTENERS.
SAFETY — Continued
WARNING
When using tools, basic precautions should always be followed, Including the following:
1. Work area
(1) Keep the work area clean and well lighted.
Cluttered benches and dark areas increase the risks of electric shock, fire, and injury to persons.
(2) Do not operate the Nailer in explosive atmospheres, such as in the presence of fl ammable liquids, gases, or combustible dust.
The Nailer is able to create sparks resulting ignition of the dust or fumes.
(3) Keep bystanders, children, and visitors away while operating the Nailer. Distractions are able to result in the loss of control of the Nailer.
2. Personal safety
(1) Stay alert. Focus on your work and use common sense when working with the Nailer. Do not use the Nailer while tired, after having consumed drugs or alcohol, or while under the influence of medication.
A moment of inattention while operating the Nailer increases the risk of injury to persons.
(2) Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep hair, clothing, and gloves away from moving parts.
Loose clothes, jewelry, or long hair increases the risk of injury to persons as a result of being caught in moving parts.
(3) Avoid unintentional starting. Be sure the switch is off before connecting to the air supply. Do not carry the Nailer with your finger on the switch or connect the Nailer to the air supply with the switch on.
(4) ⚠️WARNING – Disconnect the Nailer from the air source before making adjustments, doing Nailer maintenance, clearing jams, touching the Push Lever, when not in use, leaving work area, leaving the Nailer outside of the operator's supervision or control, loading, or unloading the Nailer, handing it to another person, elevating, lowering or otherwise moving the Nailer to a new location. Never attempt to clear a jam or repair the Nailer unless you have disconnected air hose from the Nailer and removed all remaining fasteners from the Nailer. The Nailer should never be left unattended since people who are not familiar with the Nailer might handle it and injure the themselves.
Such precautionary measures reduce the risk of injury to persons.
(5) Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the Nailer in unexpected situations.
(6) Use safety equipment. A dust mask, non-skid ng is safetyshoes and a hard hat must be used for the applicable conditions.
(7) ⚠️WARNING – Risk of hearing loss. Wear hearing protection.
Hearing protection shall have a Noise Reduction Rating (NRR) determined in accord Environmental Protection Agency rules that is appropriate for noise exposure.
(8) Always wear head protection.
Always wear head protection to protect your head from fl ying objects.
(9) Do not attach the hose or Nailer to your body.
Attach the hose to the structure to reduce the risk of loss of balance if the hose shifts.
(10) WARNING – Drive Nails into proper work surface only. Do not drive nail into other nails. This is able to cause the fastener to be deflected and hit someone, or cause the Nailer to react and result in a risk of injury to persons.
3. Nailer use and care
(1) Use clamps or another practical way to secure and support the workpiece to a stable platform.
Holding the work by hand or against the body is unstable and is able to lead to loss of control.
(2) Do not force the Nailer. Use the correct Nailer for the application. The correct Nailer will do the job better and safer at the rate for which the Nailer is designed.
(3) Do not use the Nailer if the switch does not turn the Nailer on or off. Any Nailer that cannot be controlled with the switch is dangerous and must be repaired.
Never use Nailer which is defective or operating abnormally. If the Nailer appears to be operating unusually, making strange noises, or otherwise appears defective, stop using it immediately and arrange for repairs by a metabo HPT authorized service center.
SAFETY — Continued
WARNING
(4) Disconnect the Nailer from the air source before making any adjustments, changing accessories, or storing the Nailer. Such preventive safety measures reduce the risk of starting the Nailer unintentionally.
(5) Store the Nailer when it is idle out of reach of children and other untrained persons. A Nailer is dangerous in the hands of untrained users.
(6) Maintain the Nailer with care. Keep the Nailer Clean and lubricated for better and safer performance.
(7) Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the Nailer's operation.
If damaged, have the Nailer serviced before Because of high air pressure in the Nailer, cracks in the surface are dangerous. To avoid this, do not drop the Nailer or strike the Nailer against hard surfaces; and do not scratch or engrave signs on the Nailer. Many accidents are caused by poorly maintained Nailers. There is a risk of bursting if the Nailer is (damaged.
(8) Do not use the Nailer that is not in proper working order. Tags and physical segregation shall be used for control.
(9) Use only accessories that are identified by metabo HPT for the specific Nailer. Use of an accessory not intended for use with the specific Nailer, increases the risk of injury to persons.
(10) Use only those fasteners listed in the Accessories section of this manual. Fasteners not identified for use with this Nailer by metabo HPT are able to result in a risk of injury to persons or damage when used in this Nailer.
4. Service
(1) Tool service must be performed only by qualified repair personnel.
(2) When servicing a Nailer, use only identical replacement parts. Use only authorized parts.
(3) Use only the lubricants supplied with the Nailer or specified by metabo HPT.
5. Air source
(1) Never connect to an air source that is capable of exceeding 200 psi (13.7 bar 14 kgf/cm ^2 ) if a regulator fails.
Over pressurizing the Nailer is able to result in bursting, abnormal operation, breakage of the Nailer or serious injury to persons.
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120psi 120psiDO NOT EXCEED 120 psi (8.3 bar 8.5 kgf/cm ^4 ).
sugonly clean, dry, regulated compressed air at the rated pressure or within the rated pressure range as marked on the Nailer.
Always verify prior to using the Nailer that the air source has been adjusted to the rated air pressure or within the rated air-pressure range.
(2) Never use reactive gases such as oxygen, carbon dioxide, combustible gases or any bottled gas as an air source for the Nailer. Such gases are capable of explosion and serious injury to persons.
6. Others
(1) Be careful of double fi re and being hit by the Nailer due to spring back ("recoil").
After driving a nail, the Nailer may recoil causing it to move away from the work surface.
To reduce risk of injury always manage recoil by:
1) always maintaining control of the Nailer.
2) allowing recoil to move the Nailer away from work surface.
3) not resisting recoil such that the Nailer will be forced back into the work surface. In "CONTAC ACTUATION MECHANISM", if push lever is allowed to re-contact work surface before the trigger is released, an unintended discharge of a nail will occur. In order to avoid this undesirable double fire,
○ Intermittent operation (Trigger fire)
① Pull the trigger rapidly and firmly.
② Release the trigger QUICKLY.
SAFETY — Continued
WARNING
○ Continuous operation (Push lever fire)
① Do not press the Nailer against the wood with excessive force.
② Separate the Nailer from the wood as it recoils after nailing.
4) keeping face and body parts away from the Nailer.
(2) Never Use NON relieving coupler on Nailer. If a non relieving coupler is used on the Nailer, the Nailer can remain charged with air after disconnecting and thus will be able to drive a fastener even after disconnecting. The Nailer and air hose must have a hose coupling such that all pressure is removed from the Nailer when the coupling joint is disconnected.
(3) Check Push Lever before use. Make sure Push Lever operates properly, and is not inoperable, disconnected, or altered. (The Push Lever may be called "Safety".) Never use the Nailer unless the Push Lever is operating properly, otherwise the Nailer could drive a fastener unexpectedly. Do not tamper with or remove the Push Lever, or otherwise cause the Push Lever to become inoperable.
(4) Keep all screws and covers tightly in place. Keep all screws and covers tightly mounted.
Check their condition periodically. Never use the Nailer if parts are missing or damaged.
(5) Do not load fasteners with Trigger or Push Lever depressed. When loading fasteners into the Nailer or when connecting the air hose,
1) do not depress the Trigger;
2) do not depress the Push Lever; and
3) keep the Nailer pointed downward.
(6) Keep hands and body away from fi ring head during use. Never place your hands or feet closer than 8 inches (200 mm) from the fi ring head. A serious injury can result if the fasteners are deflected by the workpiece, or are driven away from the point of entry.
(7) When working close to an edge of a workpiece or at steep angles, or driving fasteners into thin workpiece use care to minimize chipping, splitting or splintering, or free fl ight, ricochet or piercing of fasteners, which may cause injury.
(8) Never drive fasteners from both sides of a wall at the same time. The fasteners can be driven into and through the wall and hit a person on the opposite side.
(9) Use extra caution when driving the Nailer into existing walls or other blind areas to prevent contact with hidden objects or persons on other side (eg., wires, pipes).
(10) Check for live wires. Avoid the risk of severe electrical shock by checking for live electrical wires that may be hidden by walls, floors or ceilings. Turn off the breaker switch to ensure there are no live wires.
(11) Do not lift, pull or lower the Nailer by the hose.
(12) Do not disconnect air hose from Nailer with finger on Trigger. The Nailer can fire when re-connected to An air supply.
t(13) Handle Nailer correctly. Operate the Nailer according to this Manual. Never allow the Nailer to be operated by children, individuals unfamiliar with its operation or unauthorized personnel.
(14) Never use Nailer for applications other than those specified in this manual.
(15) Never modify or alter a Nailer. Doing so may cause it to malfunction and personal injuries may result.
(16) Do not remove Dust Cover. Fragments of wire collating fasteners can fly out.
(17) Close Nail Guide and do not open it during operation. If driving fasteners with the Nail Guide open, the fasteners can be driven away from the workpiece.
SAFETY — Continued
RESPONSIBILITIES OF EMPLOYER, TOOL OWNER AND TOOL OPERATOR
- Ensure that this MANUAL is available to operators and personnel performing maintenance.
- Train the operator in the safe use of the Nailer as described in this MANUAL.
- Ensure that only persons who have read and understand this MANUAL operate the Nailer.
-
Ensure that Nailers are used only when operators and others in work area are wearing EYE PROTECTION, and other appropriate personal protective equipment such as HEAD, HEARING, FOOT PROTECTION.
-
Enforce the use of EYE PROTECTION by operators and others in work area.
- Ensure that Nailers are kept in safe working order as described in this MANUAL.
- Maintain Nailers properly.
- Ensure that only qualified personnel Nailers.
- Ensure that Nailers that require repair are removed from service and that tags and physical segregation are used as a means of control.
SAVE THIS MANUAL AND KEEP IT AVAILABLE FOR OTHERS!
OPERATION
NOTE: The information contained in this Manual is designed to assist you in the safe operation of the Nailer.
Some illustrations in this Manual may show details or attachments that differ from those on your own Nailer.
NAME OF PARTS
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Exhaust Cover Trigger Body Cap Air Plug (Sold separately) Exhaust Valve Piston Piston O-ring Driver Blade Nose Magazine Stopper Magazine Assembly Push Lever Firing Head (Outlet) Magazine Cover Nail Holder Dust cover Feeder Secti
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Section A-A Main Nail Stopper Nail Guide Feeder Feed SpringFeed PiSPECIFICATIONS
| Model NV83A2 NV65AC | NV50A1 | ||
| Operating pressure 70 – 1 | 20 psi (4.9 – 8.3 bar 5 – 8.5 kgf/cm | 2) | |
| DimensionsLength × Height × Width | 11-13/32" × 13-11/16" × 5-13/32"(290 mm × 348 mm × 135 mm) | 11-13/32" × 12-17/32" × 5-13/32"(290 mm × 318 mm × 135 mm) | 9-27/32" × 10-3/8" × 4-11/16"(250 mm × 264 mm × 119 mm) |
| Weight 8.2 lbs (3.7 kg) 7.5 | Ibs (3.4 kg) 4.2 lbs (1.9 kg) | ||
| Nail capacity 200 – 300 nails (1 coil) 250 – 300 nails (1 coil) 400 nails (1 coil) | |||
| Air consumption | .084 ft3/cycle at 100 psi(2.4 ltr/cycle at 6.9 bar)(2.4 ltr/cycle at 7 kgf/cm2) | .075 ft3/cycle at 100 psi(2.1 ltr/cycle at 6.9 bar)(2.1 ltr/cycle at 7 kgf/cm2) | .035 ft3/cycle at 100 psi(.99 ltr/cycle at 6.9 bar)(.99 ltr/cycle at 7 kgf/cm2) |
| Air inlet | 3/8 NPT Thread | ||
NAIL SELECTION
Only nails shown in the Table below can be driven with this Nailer.
NOTE: Use only genuine metabo HPT nails to assure nail quality and driving ease.
Dimensions of nails
 Wire-collated coil nails | NV83A2 NV65AC NV50A1 | |||||
| Min. Max | Min. Max. Min. | Max. | ||||
| .236"(6 mm) | .283"(7.2 mm) | .245"(6.2 mm) | .266"(6.8 mm) | .189"(4.8 mm) | .189"(4.8 mm) | |
 |  |  |  |  |  | |
| (2.5 mm) | (3.3 mm) | |||||
Nails are collated and coiled, as shown in the above figure.
ACCESSORIES
WARNING
● Accessories other than those shown below can lead to malfunction and resulting injuries.
STANDARD ACCESSORIES
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Line drawing of a pair of safety glasses with label 1 (no text or symbols on the eyeglasses)| Model NV83A2 NV65AC NV50A1 | |||
| 1Eye protection | 1 | 1 | 1 |
OPTIONAL ACCESSORIES... sold separately
○ Sequential Trip Mechanism Kit (Code No. 876762) (Single shot parts)
○ Pneumatic Tool Lubricant
.8 oz. (25 cc) oil feeder (Code No. 877153)
4 oz. (120 cc) oil feeder (Code No. 874042)
1 quart (1 ltr) can (Code No. 876212)
NOTE: Accessories are subject to change without any obligation on the part of metabo HPT.
APPLICATIONS
○ Construction wooden work such as floor and wall framing, roof decking, subflooring.
○ Mobile and modular home construction.
○ Making wooden boxes, palletes, and drums.
○ Packing operations in manufacturing plants, and other types of packing and crating work in general.
○ Making wooden boxes, and light pallets.
○ Making wooden furniture, wooden sash, and other wooden products.
○ Packing operations in manufacturing plants, and other types of packing and crating work in general.
○ Construction work in general such as prefabricated houses.
NOTE:
Aluminium nails may bend when used on hard surfaces. Test before use.
BEFORE OPERATION
Read section titled "SAFETY" (pages 4 – 8).
Make sure of the followings before operation.
WORKING ENVIRONMENT
WARNING
● No flammable gas, liquid or other flammable objects at worksite.
● Clear the area of children or unauthorized personnel.
AIR SUPPLY
DANGER
● NEVER use reactive gases or other bottled gases. Explosion may occur.
WARNING
● Never connect Nailer to pressure which potentially exceeds 200 psi (13.7 bar 14 kgf/cm ^2 ) if a regulator fails.
● Never use non relieving coupler on Nailer.
- Power source
○ Use only clean, dry, regulated compressed air as a power source for this Nailer.
Air compressors used to supply compressed air to this Nailer must comply with the requirements of the latest version of ANSI Standard B 19.3 "Safety Standard For Compressors For Process Industries."
○ Moisture or oil in the air compressor may accelerate wear and corrosion in the Nailer.
Drain daily.
- Filter-Regulator-Lubricator
○ Use a regulator with a pressure range of 0 – 120 psi (0 – 8.3 bar 0 – 8.5 kgf/cm²).
○ Filter-regulator-lubricator units supply an optimum condition for the Nailer and extend the Nailer life.
These units should always be used.
Filter ....The filter removes moisture and dirt mixed in compressed air. Drain daily unless fitted with an automatic drain. Keep the filter clean by regular maintenance.
Regulator.....The regulator controls the operating pressure for safe operation of the Nailer. Inspect the regulator before operation to be sure it operates properly. Lubricator .... The lubricator supplies an oil mist to the Nailer. Inspect the lubricator before operation to be sure the supply of lubricant is adequate. Use metabo HPT pneumatic tool lubricant.
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Regulator Nailer Side Compressor Side Filter Lubricator3. Air hose
Compressed air supply hoses shall have a minimum working pressure rating equal to or greater than the pressure from the power source if a regulator fails, or 150 psi (10.4 bar 10.6 kgf/cm ^2 ), whichever is greater.
4. Air consumption
Using the Air consumption table and the Air compressor size formula, find a correct compressor size.
Air consumption table
| Operating pressure | psi(bar)(kgf/cm2) | 80(5.5)(5.6) | 90(6.2)(6.3) | 100(6.9)(7) |
| Air consumption ft^3/cycle (ltr/cycle) | NV83A2 | .062(1.8) | .073(2.1) | .084(2.4) |
| NV65AC | .048(1.4) | .061(1.7) | .075(2.1) | |
| NV50A1 | .025(.71) | .030(.85) | .035(.99) |
Air compressor size formula
Amount of air required
=number of Nailers
× average nails driven each minute per Nailer
× air consumption at given air pressure
× safety factor (always 1.2)
Example: 2 Nailers (NV83A2) operating at 100 psi driving 30 nails per minute
Amount of air required
= 2× 30× .084(2.4)× 1.2
=6.0 CFM (ft ^3 /min) (173 ltr/min)
After making the calculations as shown above, you should find a compressor providing 6.0 CFM of air that is required.
LUBRICATION
It is important that the Nailer be properly lubricated.
Without proper lubrication, the Nailer will not work properly and parts will wear prematurely.
○ Use metabo HPT pneumatic tool lubricant.
Do not use detergent oil or additives. These lubricants will harm the O-rings and other rubber parts. This will cause the Nailer to malfunction.
○ Filter-regulator-lubricator units should always be used.
Keep the lubricator filled with metabo HPT pneumatic tool lubricant.
☐ If a lubricator is not available, supply 5 – 10 drops of metabo HPT pneumatic tool lubricant into the air plug on the Nailer twice a day.
COLD WEATHER CARE
○ Do not store the Nailer in a cold weather environment.
Keep the Nailer in a warm area until beginning the work.
○ If the Nailer is already cold, bring it in a warm area and allow the Nailer to warm up before use.
① Reduce the air pressure to 64 psi (4.4 bar 4.5 kgf/cm^2 ).
② Remove all nails from the Nailer.
③ Connect the air hose and free-fire (blank-fire) the Nailer.
The lowered air pressure will be enough to free-fire the Nailer.
Slow speed operation tends to warm up the moving part.
CAUTION
- Do not free-fire the Nailer at high pressure.
TESTING THE NAILER
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⚠️ DANGER
- Operators and others in work area MUST wear safety glasses with side shields which conforms to ANSI Z87.1 specifications.
Ordinary eyeglasses do not provide adequate protection.
WARNING
● Never use Nailer unless push lever is operating properly.
Before actually beginning the nailing work, test the Nailer by using the checklist below. Conduct the tests in the following order.
If abnormal operation occurs, stop using the Nailer and contact a metabo HPT authorized service center immediately.
(1) DISCONNECT AIR HOSE FROM NAILER. REMOVE ALL NAILS FROM NAILER.
☐ ALL SCREWS MUST BE TIGHTENED. If any screws are loose, tighten them.
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Line drawing of a hand inserting a plug into a battery (no text or symbols)☐ THE PUSH LEVER AND TRIGGER MUST MOVE SMOOTHLY.
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Trigger Push Lever Do not connect air hose(2) Adjust the air pressure to 70 psi (4.9 bar 5 kgf/cm ^2 ). Connect the air hose. Do not load any nails in the Nailer.
□ THE NAILER MUST NOT LEAK AIR.
Hold the Nailer downward and pull the trigger.
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Line drawing of a hand operating a mechanical device with no visible text or symbolsPull Trigger
(3) With finger off the trigger, depress the push lever against the workpiece.
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Depress Push Lever Do not pull Trigger(4) Without touching the trigger, depress the push lever against the workpiece. Pull the trigger.
(5) With the Nailer off the workpiece, pull the trigger. Depress the push lever against the workpiece.
(6) If no abnormal operation is observed, you may load nails in the Nailer. Drive nails into the workpiece that is the same type to be used in the actual application.
Adjust the air pressure at recommended operating pressure 70 - 120 psi (4.9 - 8.3 bar 5 - 8.5 kgf/cm ^2 ) according to the length of nails and the hardness of workpiece.
The correct air pressure is the lowest pressure which will do the job. Using the Nailer at a higher than required air pressure unnecessarily over stresses the Nailer.
LOADING NAILS
WARNING
● When loading nails into Nailer,
1) do not pull trigger;
2) do not depress push lever; and
3) keep Nailer pointed downward.
(1) Grip the nail guide and knob with finger.
Press the knob down and swing the nail guide open.
And open the magazine cover.
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Knob Nail guide Magazine cover(2) Adjust the position of the plate according to the nail length.
The nail will not feed smoothly if the plate is not correctly adjusted.
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Magazine Nail holder Magazine coverNOTE: Before loading nails in the magazine, adjust the plate. If the magazine cover is forcibly closed without adjusting the plate correctly, the nail holder may be damaged.
① Turn the nail holder about 90 degrees counterclockwise.
② Slide in vertical direction possible.
Lift or lower the nail holder to accept different length nails.
③ Adjust the plate to the nail length reference points on the magazine cover and turn the nail holder 90 degrees clockwise until you hear "click".
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2" 2¹/4" 2³/8" 2¹/2" 2³/4" 3" 3¹/4" Magazine Nail holder ① ② ③(3) Place the nail coil into the magazine. Uncoil enough nails to reach the driving hole.
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Magazine Nails Nail holder(4) ① Uncoil enough nails to reach the driving hole.
② Insert the first nail into the driving hole and the second nail between the two pawls of the feeder.
③ Fit the nail heads in the guide slot.
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First nail Nail Guide Driving hole Guide slot ② ③ Guide surface Feeder ④ ①④ Pulling the nails to the right, swing the nail guide closed.
(5) Close the magazine cover fi rst and swing the nail guide closed.
(6) Lock the knob correctly.
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Knob Nail guide Magazine coverNOTE: Be careful not to deform the collated wires and not to disengage the nails with the guide surface.
Otherwise, the nail guide will not close correctly.
(1) Press the magazine stopper and open the magazine cover.
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Magazine Cover Magazine Stopper(2)
Adjust the position of the nail holder according to the nail length.
The nail will not feed smoothly if the nail holder is not correctly adjusted.
① Lift the nail holder.
② Turn the nail holder to align the mark with the numbers (1-1/4"(32 mm), 1-1/2"(38 mm), 1-3/4"(45 mm), 2"(50 mm) on the magazine cover.
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For 1-1/4"(32 mm) For 1-1/2"(38 mm) For 1-3/4" and 2" (45 mm and 50 mm) Magazine Cover ① ② Nail Holder MarkNOTE: Before loading nails in the magazine, adjust the plate. If the magazine cover is forcibly closed without adjusting the nail holder correctly, the nail holder may be damaged.
(3) Place the nail coil into the magazine.
Insert the first nail into the magazine opening.
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First Nail Nail Magazine Opening Magazine(4) Close the magazine cover.
(5) Grip the nail guide and knob with finger.
Press the knob down and swing the nail guide open.
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Knob Nail Guide(6) ① Uncoil enough nails to reach the driving hole.
② Insert the first nail into the driving hole and the second nail between the two pawls of the feeder.
③ Fit the nail heads in the guide slot.
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First Nail Nail Guide Driving Hole Guide Slot ② ③ Guide Surface Feeder ④ ①NOTE: Be careful not to deform the collated wires and not to disengage the nails with the guide surface.
Otherwise, the nail guide will not close correctly.
④ Pulling the nails to the right, swing the nail guide closed.
(7) Lock the knob completery.
NAILER OPERATION
Read section titled "SAFETY" (pages 4 – 8).
DANGER
- Operators and others in work area MUST wear safety glasses with side shields which conforms to ANSI Z87.1 specifications.
Ordinary eyeglasses do provide adequate protection.
WARNING
● Only person who have and understand this MANUAL should operate the Nailer.
● NEVER point tool at yourself or others in work area.
- Keep fingers AWAY from trigger when not driving nails to avoid accidental discharge.
● Know and understand what trigger system you are using.
Please read and understand "Methods of Operation" below.
● Never place your hands or body closer than 8 inches (200 mm) from fi ring head when using.
- Do not drive nails into other nails; nails can ricochet and hurt someone.
- Do not actuate Nailer unless Nailer is placed firmly against the workpiece.
- In order to avoid double fire or unwanted ejection of a nail due to bouncing of the Nailer,
1) do not push Nailer on workpiece with strong force;
2) take Nailer away from workp recoil;
3) release trigger quickly when performing trigger fi re.
- When working close to an edge of a workpiece or at steep angles, or driving fasteners into thin workpiece use care to minimize chipping, splitting or splintering, or free fl ight, ricochet or piercing of fasteners, which may cause injury.
● Never drive nails from both sides of a wall at the same time. Nails can be driven into and through the wall and hit a person on the opposite side.
● Never use Nailer which is defective or operating abnormally. - Do not use the body or any portion of the tool as a hammer as nails may be discharged unexpectedly or the tool may become damaged and serious injury could occur.
● Disconnect air hose from Nailer when:
1) it is not in use;
2) leaving work area;
3) elevating, lowering or otherwise moving it to another location;
4) handing it to another person;
5) performing any maintenance or repairs;
6) clearing a jam;
7) Nailer is outside of the operator's supervision or control;
8) removing nails from the magazine; and 9) adjusting nailing depth.
This metabo HPT nailer has a STANDARD CONTACT TRIP MECHANISM (Bounce Fire). An OPTIONAL SEQUENTIAL TRIP MECHANISM kit (SINGLE SHOT) is available as order part number 876762.
THE STANDARD CONTACT TRIP MECHANISM (Bounce Fire) is for use where rapid fastener placement is desired and must be operated in accordance with the following "METHODS OF OPERATION".
METHODS OF OPERATION
This Nailer is equipped with the push lever and does not operate unless the push lever is depressed (upward position).
There are two methods of operation to drive nails with this Nailer.
They are:
- Intermittent operation (Trigger fi re):
- Continuous operation (Push lever fire):
(1) Intermittent operation (Trigger fire)
① Position the nail outlet on the workpiece with finger off the trigger.
② Depress the push lever firmly until it is completely depressed.
③ Pull the trigger to drive a nail.
④ Remove finger from the trigger.
To drive another nail, move the Nailer along the workpiece and repeat this procedure.
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Trigger ③ ② Push Lever(2) Continuous operation (Push lever fire)
① Pull the trigger with the Nailer off the workpiece.
② Depress the push lever against the workpiece to drive a nail.
③ Move the Nailer along the workpiece with a bouncing motion.
Each depression of the push lever will drive a nail. As soon as the desired number of nails have been driven, remove finger from the trigger.
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Previously pull the trigger ① ③
WARNING
- Keep your finger off the trigger except during fastening operation, because serious injury could result if the push lever accidentally contacts you or others in work area.
- Keep hands and body away from the discharge area. The nailer with contact trip mechanism may bounce from the recoil of driving a fastener and unwanted subsequent fastener may be driven, possibly causing injury.
● Some types of loaded nails can spark out of the muzzle during a nail driving operation. Exercise caution!
THE OPTIONAL SEQUENTIAL TRIP MECHANISM (SINGLE SHOT PARTS) is for use where precision fastener placement is desired and must be operated in accordance with the following "Method of Operation".
You must first depress the push lever (upward position) where you want to drive a nail and then pull the trigger. After the each nail is driven, completely release the trigger and lift the tool off the work surface.
An OPTIONAL SEQUENTIAL TRIP MECHANISM may reduce the possibility of bodily injury to you or others in the work area. This is because it is less likely to drive an unwanted nail if you keep the trigger pulled and accidentally bump the push lever against yourself or others. An OPTIONAL SEQUENTIAL TRIP MECHANISM may also reduce the speed of operation compared to the standard contact trip mechanism.
NOTE:
● Both STANDARD CONTACT TRIP MECHANISM and OPTIONAL SEQUENTIAL TRIP MECHANISM are safe if used as described above and according to all warnings and instructions.
● Always handle nails and package carefully.
If dropped, the collated nails may break or come loose. In such cases, do not use the nails because, if used in that condition, nail feed may become faulty and result in missed nails or jamming of the nails.
● After nailing:
1) disconnect air hose from the Nailer;
2) remove all nails from the Nailer;
3) supply 5 - 10 drops of metabo HPT pneumatic tool lubricant into the air plug on the Nailer; and
4) open the petcock on the air compressor tank to drain any moisture.
ADJUSTING THE NAILING DEPTH
To assure that each nail penetrates to the same depth, be sure that:
1) the air pressure to the Nailer remains constant (regulator is installed and working properly), and
2) the Nailer is always held firmly against the workpiece.
If nails are driven too deep or shallow into the workpiece, adjust the nailing depth in the following order.
① DISCONNECT AIR HOSE FROM NAILER.
② If nails are driven too deep, turn the adjuster to the shallow side.
If nails are driven too shallow, turn the adjuster to the deep side.
③ Stop turning the adjuster when a suitable position is reached for a nailing test.
④ Connect the air hose.
ALWAYS WEAR EYE PROTECTION.
Perform a nailing test.
⑤ DISCONNECT AIR HOSE FROM NAILER.
⑥ Choose a suitable position for the adjuster.
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Shallow Adjuster Deep ①⑤ Disconnect air hose
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Flush Too deep Too shallowMAINTENANCE
NOTE: The information contained in this Manual is designed to assist you in the safe maintenance of the Nailer.
Some illustrations in this Manual may show details or attachments that differ from those on your own Nailer.
MAINTENANCE AND INSPECTION
Read section titled "SAFETY" (pages 4 – 8).
WARNING
- Disconnect air hose and remove all nails from Nailer when:
1) doing maintenance and inspection; and
2) clearing a jam.
- Clearing a jam
Remove a jammed nail in the following order:
① DISCONNECT AIR HOSE.
② Open the nail guide.
③ Insert a rod into the outlet.
Tap the rod with a hammer.
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Hammer Rod Outlet ① Disconnect air hose④ Remove the jammed nail with a slotted screw driver.
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Nail Slotted Screw Driver⑤ Cut the deformed collated wire with nippers. Correct the deformation.
⑥ In case of frequent jam, contact a metabo HPT authorized service center.
- Inspecting the push lever
① DISCONNECT AIR HOSE.
② Clean the push lever sliding part.
Lubricate it with metabo HPT pneumatic tool lubricant.
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Lubricate ① Disconnect air hose- Inspecting the feeders
① DISCONNECT AIR HOSE.
② Clean the knob sliding part.
Lubricate it with metabo HPT pneumatic tool lubricant.
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Nail Guide Push Lever Knob ① Disconnect air hose③ Open the nail guide and remove dust.
Lubricate the sliding groove of the feeder and shafts.
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Nail Guide Main Nail Stopper Sub Nail Stopper Nose Opening Feeder ShaftFeeder
④ Lubricate the feeding surfaces of the nose and the nail guide after cleaning.
This promotes smooth operation and prevents rust.
CAUTION
- Check that the main nail stopper and sub nail stopper slide smoothly by pushing them with finger.
If not smooth, nails can be driven at an irregular angle and hurt someone.
- Inspecting the magazine
① DISCONNECT AIR HOSE.
② Clean the magazine. Remove dust or wooden tips which may have accumulated in the magazine.
- Storing
○ When not in use for an extended period, apply a thin coat of the lubricant to the steel parts to avoid rust.
○ Do not store the Nailer in a cold weather environment.
Keep the Nailer in a warm area.
○ When not in use, the Nailer should be stored in a warm and dry place.
Keep out of reach children.
- WARNING LABEL
Do not use the Nailer with missing or damaged WARNING LABEL.
A new WARNING LABEL is available from a metabo HPT authorized service center.
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Warning Label- Maintenance chart (See page 22)
- Operator troubleshooting (See page 22)
CAUTION
- In the operation and maintenance of power tools, the safety regulations and standards prescribed in each country must be observed.
SERVICE AND REPAIRS
WARNING
● Only service personnel trained by metabo HPT, distributor or employer shall repair the Nailer.
- Use only parts supplied or recommended by metabo HPT for repair.
All quality Nailers will eventually require servicing or replacement of parts because of wear from normal use.
NOTE:
Specifications are subject to change without any obligation on the part of metabo HPT.
Maintenance chart
| ACTION WHY HOW | ||
| Drain air line fi Iter daily. Prevent accumulation of moisture and dirt. | Open manual petcock. | |
| Keep lubricator filled. | Keep the Nailer lubricated. | Fill with metabo HPT pneumatic tool lubricant. |
| Clean fi Iter element and blow air through fi Iter in direction opposite to normal flow daily. | Prevent clogging of filter with dirt. | Follow manufacturer's instructions. |
| Clean magazine and feeder mechanism. | Prevent a jam. Blow clean daily. | |
| Keep push lever working properly. | Promote operator safety and efficient Nailer operation. | Blow clean daily. |
| Lubricate the Nailer after nailing. Extend the Nailer life. Supply 5 – 10 drops of lubricant into the Nailer. | ||
| Drain air compressor daily. | Keep the Nailer operated properly. | Open petcock on air compressor tank. |
Operator troubleshooting
Most minor problems can be resolved quickly and easily using the table below.
If problems persist, contact a metabo HPT authorized service center for assistance.
| PROBLEM | CHECK METHOD | CORRECTION |
| Nailer operates, but no nail is driven. | Check for a jam | Clear a jam per page 20. |
| Check function of feeder per page 20. | Clean and lubricate. | |
| Check for proper nails. | Use only recommended nails. | |
| Weak drive.Slow to cycle. | Check air pressure. | Increase air pressure. (Do not exceed 120 psi (8.3 bar 8.5 kgf/cm^2 ).) |
| —— | Use metabo HPT pneumatic tool lubricant. | |
| Driver blade worn? | Contact metabo HPT for replacement. | |
| Piston ring worn or damaged? | ||
| Drives too deep. | Check air pressure. | Reduce air pressure.(Adjust 70 – 120 psi) |
| Skipping nails. Intermittent feed. | Check for proper nails. | Use only recommended nails. |
| Check function of nail feeder per page 20. | Clean and lubricate. | |
| —— | Use metabo HPT pneumatic tool lubricant. | |
| Check position of plate or nail holder in magazine per page 15. | Adjust plate or nail holder to proper position. | |
| Piston O-ring cut or heavily worn? | Contact metabo HPT for replacement. | |
| Nails jam.Driven nail is bent. | Check for proper nails. | Use only recommended nails. |
| Driver blade worn? | Contact metabo HPT for replacement. | |
| Drives properly during normal operation, but does not drive fully at faster nailing speeds. | Check inside diameter of air hose. Use | larger air hose. |
ATTENTION : UTILISATEURS DE CLOUEURS metabo HPT
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Line drawing of a pair of safety glasses with label 1 (no text or symbols on the eyeglasses themselves)| Modèl NV83A2 NV65AC NV50A1 | |||
| 1Lunettes de protection | 1 | 1 | 1 |
ACCESSOIRES EN OPTION
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Line drawing of a hand holding a small mechanical component (no text or symbols)□ LE LEVIER-POUSSOIR ET LA GACHETTE DOIVENT FONCTIONNER AVEC SOUPLESSE.
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Technical line drawing of a mechanical assembly with a hand operating a bolt (no text or symbols present)text_image
2" 2¹/4" 2³/8" 2¹/2" 2³/4" 3" 3¹/4" Magasin Porte-clous ① ② ③natural_image
Diagram of two nail screw fasteners embedded in a wooden surface with hatched fill (no text or symbols)ENTRETIEN
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Line drawing of a pair of safety glasses with label 1 (no text or symbols on the eyeglasses themselves)natural_image
Line drawing of a hand holding a small mechanical component (no text or symbols)□ LA PALANCA DE EMPUJE DEBERÁ PODER ACCIONARSE SIN DIFICULTAD.
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Gatillo Palanca de empuje No conecte la manguera de airetext_image
2" 2¹/4" 2³/8" 2¹/2" 2³/4" 3" 3 1/4" Cargador Portaclavos ① ② ③natural_image
Diagram of two nail screw fasteners embedded in a hatched material (no text or symbols)MANTENIMIENTO
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Line drawing of a quill pen in an inkwell (no text or symbols)Issued by
Koki Holdings Co., Ltd.
Shinagawa Intercity Tower A, 15-1, Konan 2-chome, Minato-ku, Tokyo 108-6020, Japan
Distributed by
Koki Holdings America Ltd.
1111 Broadway Ave, Braselton, Georgia, 30517
Koki Holdings America Ltd. Canadian Branch
3405 American Drive, Units 9-10, Mississauga, ON, L4V 1T6
