This document provides the operating instructions and parts list for the AIRCAT Model 1680-A/1680-A-6 (ext) 3/4" Impact Wrench. It emphasizes the importance of reading the manual carefully to prevent personal injury and property damage.
Function Description:
The AIRCAT 1680-A/1680-A-6 (ext) is a 3/4" impact wrench designed for fastening and unfastening threaded fasteners. It utilizes compressed air to deliver high torque and impacts, making it suitable for various assembly and disassembly tasks. The tool is not intended for setting precise torque values; a torque wrench should be used for that purpose. For installation, the regulator should be set to minimum to medium to prevent overtightening, while for removal, it should be set to maximum.
Important Technical Specifications:
The manual details two models: 1680-A and 1680-6-A.
- Free Speed (RPM): Both models have a free speed of 4,500 RPM.
- Bolt Capacity (in.): Both models can handle a 1-inch bolt capacity.
- Square Drive (in.): The 1680-A has a 3/4-inch square drive, while the 1680-6-A has a 3/4 x 6-inch square drive, indicating an extended anvil.
- Impacts Per Minute: Both models deliver 950 impacts per minute.
- Max. Torque (ft-lb) @90 psi: Both models provide a maximum torque of 1600 ft-lb at 90 psi.
- Weight (lbs.): The 1680-A weighs 12.5 lbs, and the 1680-6-A weighs 14.8 lbs.
- Length (in.): The 1680-A is 8.9 inches long, and the 1680-6-A is 14.8 inches long.
- Air Cons. (CFM): Both models consume 8 CFM of air.
- Rec. Hose Size (in.): A 1/2-inch recommended hose size is specified for both.
- Air Inlet (in.) NPT/BSP: Both models have a 3/8-inch NPT/BSP air inlet.
Usage Features:
The manual outlines several critical safety and operational guidelines:
- General Safety Rules: Emphasizes reading and understanding safety instructions, prohibiting modifications to the tool, and ensuring only qualified and trained operators use it. It warns against explosion, fire, and cutting risks.
- Projectile Hazards: Users must wear impact-resistant eye protection due to the risk of high-velocity projectiles from workpiece, accessories, or tool failure.
- Entanglement Hazards: Users are warned to keep neckwear, hair, and gloves away from the tool and accessories to prevent choking, scalping, or lacerations.
- Operating Hazards: Recommends wearing suitable gloves to protect hands from crushing, impacts, cuts, abrasions, and heat. Operators must be physically able to handle the tool's weight and power, maintain a balanced body position, and keep hands away from moving parts. It also advises releasing the start/stop device if energy supply is interrupted and using only manufacturer-recommended lubricants.
- Repetitive Motions Hazards: Users are advised to maintain a comfortable posture, secure footing, and change posture during extended tasks to avoid discomfort and fatigue. Symptoms like persistent pain, throbbing, tingling, or numbness should be reported to an employer and a health professional.
- Accessory Hazards: Only manufacturer-recommended accessories and consumables of appropriate sizes and types should be used.
- Workplace Hazards: Warns against slips, trips, and falls due to slippery surfaces or air lines/hoses. Users should proceed with care in unfamiliar surroundings and be aware of hidden hazards like electrical or utility lines. The tool is not designed for explosive atmospheres or insulated against electric power.
- Dust and Fume Hazards: Highlights the risk of cancer, birth defects, or respiratory diseases from dust and fumes generated during work processes. It recommends controlling emissions at the source, using integral collection features, and wearing respiratory protection if required.
- Noise Hazards: Unprotected exposure to high noise levels can cause permanent hearing loss. Users should wear hearing protection and maintain the tool to prevent unnecessary noise increases.
- Vibration Hazards: Exposure to vibration can damage nerves and blood supply. Users should wear warm clothing, stop using the tool if symptoms like numbness or tingling occur, and seek medical advice. It also suggests supporting the tool with a stand or balancer to reduce grip force and vibration risk.
- Air Supply & Connection Hazards: Warns that air under pressure can cause severe injury. Users should never direct air at themselves or others, check hoses and fittings for damage, install lock pins on universal twist couplings, and use whip check safety cables. The maximum air pressure stated on the tool should not be exceeded, and the tool should never be carried by the hose.
- Socket Use: Only impact sockets and accessories designated "FOR USE WITH IMPACT WRENCHES" should be used. Hand tool sockets can break and create flying pieces. Sockets, retainers, and drives should be regularly checked for wear or damage and replaced as needed. For 3/4" drive anvils or larger, a socket retaining ring and pin should be used.
- Operation: The tool should never be triggered when not applied to a work object. Loose attachments like torque socket bars or extensions can cause serious injury.
Maintenance Features:
Proper maintenance is crucial for the tool's longevity and performance.
- Power Loss/Erratic Action: Factors like reduced compressor output, excessive air line drain, moisture, or restrictions in air pipes/hoses can cause power loss. Grit or gum deposits can be corrected by cleaning the air strainer and flushing the tool with gum solvent oil or an equal mixture of SAE#10 oil and kerosene.
- Out-of-Warranty Tools: If the tool is out of warranty and external conditions are in order, it should be disconnected from the hose, disassembled, cleaned, reassembled, re-lubricated, and damaged parts replaced. It can also be sent to an air tool service center.
- Warranty Period Tools: Tools within the warranty period should be sent directly to the Warranty Center.
- Lubrication: Before service or changing sockets, the air line must be shut off and drained to prevent accidental operation. An in-line filter-regulator-lubricator is recommended to increase tool life and maintain sustained operation.
- Lubricator Maintenance: The in-line lubricator should be regularly checked and filled with air tool oil, avoiding excessive amounts. It should be adjusted by holding the throttle open for about 30 seconds with a sheet of paper near the exhaust ports; a light oil stain on the paper indicates proper setting.
- Storage: For extended storage, the tool should be generously lubricated through the air inlet, run for approximately 30 seconds to distribute the oil, and then stored in a clean, dry environment.
- Recommended Lubricants: Air tool oil or any high-grade turbine oil containing moisture absorbent, rust inhibitors, metal wetting agents, and an EP (extreme pressure) additive.
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