Gisam 1800N.M Brushless Electric Impact Wrench User Manual

1. Important Safety Information

Always read and understand 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.

General Power Tool Safety Warnings:

• Work Area Safety: Keep your 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 which may ignite the 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 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.
• 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.
• 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 for 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.

Battery Safety:

• This tool is designed to be adapted to 18V Makita B series lithium batteries.
• Compatible Batteries: BL1830, BL1850, BL1840, BL1840B, BL1850B, BL1820B, BL1430B, BL1440, BL1415, BL1815N.
• Recommended Battery Capacity: 2.0AH - 5.0AH.
• NOT Compatible Batteries: DC18WA, BL1813G, BL1413G, BL1415G, BL1430G, BL1815G (G Series batteries), and 18V Ni-CD batteries such as 1822.
• Ensure the battery is fully charged before use.
• Do not expose batteries to extreme heat or cold.
• Do not short-circuit battery terminals.

2. Product Overview

The Gisam Brushless Electric Impact Wrench is a powerful and versatile tool designed for various applications, from car repair to construction and home installation. It features a brushless motor for enhanced efficiency and durability, high torque output, and multiple speed settings.

Figure 2.1: Gisam Electric Impact Wrench Components

• 1/2" Square Drive: Durable aluminum alloy machine head and alloy steel tenon shaft.
• LED Indicator Light: Provides illumination in dark and complex working conditions.
• Forward & Reverse Switch: Easily change rotation direction.
• Infinitely Variable Switch: Allows for stepless speed adjustment.
• Non-slip Handle: Ergonomic soft rubberized design for comfortable and secure grip.
• Cooling Holes: Designed for efficient heat dissipation.
• Display Panel: Shows battery indicator and selected gear.
• Brushless Motor: Offers more energy-efficient operation, increased durability, and a longer lifespan compared to traditional brushed motors.

3. Setup

3.1 Battery Installation

1. Ensure the tool is switched off and the forward/reverse switch is in the static (middle) position.
2. Align the battery pack with the battery port on the base of the wrench.
3. Slide the battery pack into the port until it clicks securely into place.
4. To remove, press the battery release button (if present) and slide the battery out.

3.2 Charging the Battery

If your set includes a charger, connect the charger to a power outlet and then connect the battery to the charger. Follow the charger's specific instructions for charging times and indicators. A plug adapter will be provided according to your country's standard.

3.3 Attaching Sockets

1. Ensure the tool is switched off and the battery is removed.
2. Align the square drive of the socket with the 1/2" square drive on the wrench.
3. Push the socket firmly onto the drive until it locks into place.
4. To remove, pull the socket off the drive.

4. Operation

4.1 Powering On/Off and Speed Control

Figure 4.1: Stepless Speed Control

The wrench features an infinitely variable switch (trigger) for stepless speed control. Press the switch to the required speed. The harder you press, the faster the tool operates.

Figure 4.2: Control Panel

The control panel allows you to select between different gear speeds:

• Gear Selection: Use the 'MODE' switch to cycle through Low, Medium, and High gears. This tool offers 3 forward gears and 2 reverse gears, including a reverse auto-stop function.
• Battery Indicator: Displays the current charge level of the battery.

4.2 Forward/Reverse Rotation

Figure 4.3: Forward/Reverse Button

The forward/reverse switch is located above the trigger. Push the switch to the left for forward rotation, to the right for reverse rotation, and to the middle for the static (locked) position. The product reversal function only includes a 1-speed + reverse self-stop switch.

4.3 LED Work Light

The integrated LED work light automatically illuminates when the trigger is pressed, providing visibility in dark or complex working conditions.

4.4 Applications

Figure 4.4: Typical Working Scenes

This impact wrench is suitable for a variety of tasks, including:

• Car Repair (e.g., loosening/tightening lug nuts)
• Construction Work
• Home Installation
• Flat Hole Drilling (with appropriate accessories)

5. Maintenance

5.1 Cleaning

• Regularly clean the tool's exterior with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
• Keep the cooling vents clear of dust and debris to ensure proper airflow and prevent overheating.
• Clean the square drive regularly to ensure smooth socket attachment and removal.

5.2 Battery Care

• Store batteries in a cool, dry place away from direct sunlight and extreme temperatures.
• Do not store batteries in a discharged state for extended periods. Charge them periodically if not in use.
• If the battery casing is damaged, discontinue use and replace it.

5.3 General Maintenance

• Inspect the tool before each use for any signs of damage, loose parts, or wear.
• Ensure all screws and fasteners are tight.
• If any part is damaged, have it repaired by a qualified service technician before further use.

6. Troubleshooting

Common Issues and Solutions:

• Tool does not turn on:
  - Check if the battery is fully charged. Refer to the battery indicator on the display panel.
  - Ensure the battery is properly inserted and clicked into place.
  - Verify the forward/reverse switch is not in the static (middle) position.
• Low torque output:
  - Ensure the correct gear (Low, Medium, or High) is selected for the task.
  - Check battery charge level; low battery can reduce torque.
  - Note that while the maximum torque is 1800 N.M, the rated torque is 700 N.M. Performance may vary based on battery condition and application.
• Tool overheating:
  - Check if the cooling holes are obstructed. Clean any dust or debris.
  - Avoid continuous heavy-duty use without breaks.
• Socket not attaching/detaching smoothly:
  - Clean the square drive and the socket. Ensure there is no rust or debris.

7. Specifications

Figure 7.1: Product Specifications

8. User Tips

• Battery Selection: Always use compatible 18V B series lithium batteries with capacities between 2.0AH and 5.0AH for optimal performance and safety.
• Torque Understanding: Be aware of the difference between the maximum torque (1800 N.M) and the rated torque (700 N.M). For everyday tasks, the rated torque is a more consistent indicator of performance.
• Set Contents: Carefully review the product description to confirm whether your purchase includes batteries and a charger, as different sets are available (No Battery, 1 Battery, 2 Batteries).
• Plug Adapter: A suitable plug adapter for your country will be provided with your order if a charger is included.
• Speed Control: Utilize the stepless speed trigger for precise control over fastening and loosening, and the gear selector for adjusting overall power for different applications.

9. Warranty and Support

For warranty information and customer support, please refer to the seller's policies or contact the Gisam Official Store directly. Keep your purchase receipt as proof of purchase for any warranty claims.