Spring Impact Hammer
User's Manual
Applicable LISUN models: IK01、IK01-06、IK01-07、IK02、IK03、IK04、IK05、IK06、IK07
1. Unboxing and Basic Familiarization with the Equipment
1.1 Key Technical Specifications
| IK Level | Protection Rating Descriptions | Impact Energy J | Application Examples |
| IK00 | Unprotected | 0 | Internal components not exposed to the outside, sealed circuit boards |
| IK01 | Resistant to light contact (such as fingers or small objects) | 0.14 | Small electronic components and sensors in low-risk indoor areas |
| IK02 | Resistant to minor impacts (such as light contact with tools or small parts falling) | 0.2 | Desktop-class office equipment housings (such as keyboard and mouse housings) |
| IK03 | Resistant to minor impacts (such as from small tools or cell phones) | 0.35 | Control panels for home appliances (such as air conditioners and TVs) |
| IK04 | Resistant to moderate impacts (such as collisions with hard objects or falling tools) | 0.5 | LED light fixture housings, printer housings, router housings |
| IK05 | Resistant to moderate impacts (such as blows from wrenches or screwdrivers) | 0.7 | Industrial control cabinets, medical device enclosures (e.g., patient monitors) |
| IK06 | Resistant to moderate impacts (such as a 1-kg object dropping from a short height) | 1 | Outdoor lighting fixtures, housings for large appliances (such as washing machines) |
| IK07 | Resistant to heavy impacts (such as a 1-kg object dropped from a height of 1 meter) | 2 | Commercial displays, elevator control panels, electrical distribution panels |
1.2 Unboxing and Checking the Contents
1.2.1 Unpacking and Visual Inspection
When unpacking the equipment, handle it gently to avoid scratching the exterior with sharp tools. After unpacking, first inspect the exterior of the main unit to ensure there is no visible deformation or dents. If you find any damage or deformation to the equipment or accessories, please contact us immediately.
1.2.2 Main Unit and Accessories
Product Models: IK01, IK02, IK03, IK04, IK05, IK06. These are single-impact-energy Spring Impact Hammers, meaning each device can test only one IK level.
Product Model: IK01-06, a universal spring hammer capable of testing six IK levels with a single device.

Figure 1
Product Model: IK07, a single-impact spring hammer.

Figure 2
Note: IK01 through IK06 have lower impact energy and can be integrated into a single device (IK01-06); IK07 has higher impact energy and a different hammer head design, so it can only be a single-energy impact hammer.
Download links for the digital user manual, warranty card, and other documents have been sent to you via email. Please download them as soon as possible. If you missed the email, please feel free to contact us to request the download links again.
2. Safety Precautions
The ambient temperature should be maintained between 5°C and 35°C, with relative humidity ≤ 85%;
You must wear impact-resistant gloves and safety goggles to prevent flying debris or ricochets from the impact hammer from causing injury;
Unauthorized personnel are prohibited from entering the test area to prevent accidental injury.
3. Spring-loaded impact hammer test
3.1 Sample Preparation
The housing of the test specimen must be clean, brand-new, and intact, with all components properly installed, in accordance with the product’s factory-shipped condition;
If specified in the product standard, samples must be pretreated (e.g., powered on, or simulated to mimic the operating state of moving parts); if no such specifications exist, prepare the samples under normal temperature and pressure conditions.
3.2 Equipment Preparation
For the IK01-06 universal impact hammer, rotate the dial on the handle to select the desired impact energy.

Figure 3
Pull the black handle outward in the direction of the arrow to charge it.

Figure 4
3.3 Impact Test
Align the black part of the hammer head vertically with the test point, then press down on the black part in the direction of the arrow to release the impact hammer and complete the impact test.

Figure 5
Note: The theoretical service life of the spring inside the spring-loaded impact hammer is 50000 cycles. This means that after 50000 cycles of normal use, the impact energy of the hammer will change significantly, requiring either the purchase of a new unit or the return of the unit for recalibration.
4. Post-Test Procedures
4.1 Sample Preparation and Observation
Visual inspection: Check the sample housing for cracks, dents, or peeling, and check whether any fasteners are loose;
Functional Testing: When the sample is powered on, test whether all functions are operating normally and ensure there are no functional failures;
Determine whether the product meets the IK rating requirements based on the product standards, and record the test results (pass/fail).
4.2 Preparation of the Test Environment
Clean the surfaces of the equipment: Wipe down the test fixture, stage, and impact hammer with a dry cloth to remove dust and grease. Do not use water or corrosive cleaning agents;
Tidy up the test area: Remove any sample debris (if present), organize tools and accessories, and keep the area clean and tidy.
4.3 Equipment Storage
After testing is complete, the device must be stored in a non-energetic state; that is, the impact energy must be released. Otherwise, remaining in an energized state for an extended period will cause spring fatigue and reduce the impact energy.
5. Troubleshooting and Resolving Common Problems
Common issues include: inaccurate impact energy, inability to store energy, and inability to release the impact hammer.
Possible causes: Excessive use of the device can cause the internal springs to inevitably wear out, resulting in reduced impact energy; improper operation or violent impacts may cause internal components to shift out of position, preventing the device from storing energy or releasing the impact hammer.
Solution: All of the above issues require disassembling the impact hammer for internal inspection, repair, and calibration. Once disassembled, the impact energy will change. Since users do not have an impact energy calibration device, please return the unit for repair if any of the above issues occur.

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