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Critical safety instructions for operation, including inspection, proper fit, and avoiding overprotection.
Instructions for storing, inspecting, and cleaning earmuffs to ensure continued effectiveness and prevent damage.
Step-by-step guide for attaching, positioning, and securing earmuffs on a hard hat for optimal fit and noise reduction.
Details the NRR value, testing standards, and factors affecting noise reduction performance for the earmuffs.
Critical safety instructions for operation, including inspection, proper fit, and avoiding overprotection.
Instructions for storing, inspecting, and cleaning earmuffs to ensure continued effectiveness and prevent damage.
Step-by-step guide for attaching, positioning, and securing earmuffs on a hard hat for optimal fit and noise reduction.
Details the NRR value, testing standards, and factors affecting noise reduction performance for the earmuffs.
The Klein Tools 60502 Full-Brim Hard Hat Earmuffs are designed to provide limited protection from harmful noise when used with all Klein Tools Full-Brim Hard Hats. While these earmuffs may fit on other products with universal side slots, Klein Tools does not guarantee their performance to advertised specifications in such cases. The Noise Reduction Rating (NRR) was evaluated using the 60400 model.
These hearing protectors are engineered to help reduce exposure to hazardous noise and other loud sounds, thereby mitigating the risk of hearing loss or injury. They achieve this by attenuating sound levels when properly worn. The earmuffs are designed to integrate seamlessly with Klein Tools Full-Brim Hard Hats, ensuring a secure fit and optimal noise reduction. The NRR for the 60502 Full Brim Hard Hat Earmuff is 26dB, as evaluated using the 60400 model, and is tested in accordance with ANSI S3.19-1974 standards. This rating indicates the level of noise reduction provided under continuous noise conditions. For instance, if the environmental noise level at the ear is 91dB(A) and the NRR is 26dB, the level of noise entering the ear would be approximately 65dB(A). It is important to note that for noise environments dominated by frequencies below 500 Hz, the C-weighted environmental noise level should be used. While hearing protectors can be recommended for protection against the harmful effects of impulsive noise, the NRR is based on the attenuation of continuous noise and may not be an accurate indicator of the protection attainable against impulsive noise such as gunfire. The Environmental Protection Agency uses the NRR as a rating of a hearing protector's noise-reducing performance, but Klein Tools cannot guarantee the suitability of the NRR as a method of rating protection, as protection relies on the level and exposure of sound and how well a product fits the user.
Proper fitting and adjustment are crucial for the earmuffs' effectiveness. To attach the earmuffs, the helmet connectors slide into the slots on each side of the hard hat. Once the helmet is placed on the head, the earmuffs can be adjusted by sliding them up or down to position them correctly over the ears. It is essential to minimize any interference from straps, goggles, or hair with the seal of the earmuff cushions to achieve the best noise reduction results. To put the earmuffs into the "In-use" position, users push inwards on the wire arms until an audible click is heard, indicating a secure fit. These earmuffs also feature a "Stand-by" position, which creates a gap between the earmuffs and the ears. To engage this position, users pull the earmuffs outward away from the head until an audible click is heard. To re-engage the "In-use" position, the user repeats the inward push. For storage, the earmuffs can be moved to the back of the hard hat by first pulling them into the stand-by position, then rotating them 90° towards the back, and finally pushing the wire arms inward once the earmuff is in the proper position on the back of the hard hat.
Removal of the earmuffs from the hard hat involves a two-step process. First, to detach the earmuffs from the helmet connector, users push outward on the gray tabs located inside the helmet. Second, to fully remove the earmuff from the helmet connector, users push down on the tab, then push and slide the adapter out. It is critical to ensure that the earmuffs are properly fit according to the instructions, as improper fit will reduce their effectiveness. Overprotection should be avoided in minimal noise environments, as using noise reduction equipment can reduce awareness of the surrounding environment. Protection from noise will be reduced if the cushion does not seal firmly against the head. To optimize the seal, users should select eyeglasses or goggles with thin, flat temples or straps that minimize interference. Long hair should be pulled back, and other items that may degrade the earmuff seal, such as pencils or jewelry, should be removed.
Regular inspection of the earmuffs and ear cushions is vital for maintaining their performance. Users should check for excessive wear, such as tears or visible cracks, before each use. Any damage to the earmuffs can significantly reduce noise reduction performance. It is also important not to reshape the wire arms, as this can lead to a loose fit and a reduction in the noise reduction rating. Earmuffs should be replaced if tears or cracks are visible on the shell and/or cushion, or if there is a noticeable change in the fit and they no longer seal firmly against the head. For cleaning, the earmuff shell and cushion can be gently wiped clean with lukewarm, mild soapy water. After cleaning, they should be dried with a soft cloth without rubbing. It is crucial not to submerge the earmuffs in water or treat them with abrasive cleaners or solvents, as this can damage the device.
General| Product Type | Safety Glasses |
|---|---|
| Lens Color | Clear |
| Frame Material | Polycarbonate |
| UV Protection | Yes |
| ANSI Z87.1 Certified | Yes |
| Includes | Safety Glasses |
| Compliance Standards | ANSI Z87.1 |
| Application | General Safety |
| Material | Polycarbonate |
| Standards | ANSI Z87.1 |
