HP-53K User Manual
Creation Date: Jan 15, 2013
Revision No: V.4.0
Revision Date: April 16, 2021
2/6
It is important to wear the earmuffs at all times in noisy surroundings to avoid the risk of hearing damage.
Inspect the earmuffs regularly for serviceability.
If the recommendations given above are not adhered, the protection by the earmuffs will be securely impaired.
Remarks
The earmuffs provides audio signal sound pressure level limitation and limits the entertainment audio signal to 82
dB(A).
Radio reception quality may be slightly distorted depending on surroundings.
To prevent damage to the headset and radio function, do not subject it to rough handling.
These earmuffs are provided with an entertainment audio facility and electrical audio input. The wearer should check
correct operation before usage. If distortion or failure is detected, the wearer should refer to the manufacturer’s
advice.
The audibility of warning signals at specific workplaces may be impaired while using the entertainment facility.
Warning
The output of the electrical audio circuit of this hearing protector may exceed the daily limited sound level.
Storage
Do not store the hearing protector at temperatures exc55°C, for example on a dashboard or windowsill. Do
not store the hearing protector at temperature below -20°C. Under extremely cold conditions, warm the hearing
protector before using.
Cleaning
Certain chemical substances may adversely affect this product. Simply wipe it with a soft cloth moistened with a
mild soap or water. Do not dip it into the water.
Safety
Loud music can cause hearing damage.
Avoid working in a noisy environment over extended periods of time.
Wear the hearing protection when working at a noisy workplace.
Acoustical warning, indication signals and environmental noises can sound different when wearing hearing
protection.
The perception of warning signals in certain workplaces may be affected when using a sound reproducing system.
Precautions and Warnings
The radio reception may be distorted under movement.
Interference and fault may happen when turning on the TV, fluorescent light or other electrical appliances.
When the volume begins to fade, recharge or replace the lithium battery. To replace the tailor-made lithium battery,
please order it from the manufacturer.
Certain chemical substances may adversely affect this product. Simply wipe it with a soft cloth moistened with a
mild soap or water. Do not dip it into water.
Remove the Battery from the unit to prevent battery leakage when you are not going to use it for a long time.
Failure to follow these instructions or misuse of the headset can result in damage and/or loss.
If the recommendation given under “Adjusting the Fit” is not adhered, the protection given by the earmuffs will be
severely impaired.
Headband and cushions are non-replaceable so do not tear it off, as it will damage the headset.
Troubleshooting
Defect
Possible Cause
Solution
No display
Batteries are incorrectly inserted
Take out the batteries and insert them
into the compartment in correct
polarity.
Batteries running down.
Replace with new batteries.
No Sound
The volume is in off position.
Switch on the volume by turning in
clockwise direction.
Audio device is not started.
Start playing the external audio device
Plug in cable not properly inserted into
Check the plug is completely inserted
