Datasheet

REMARKS
1. All specifications are measured after 5 min. rotating. Y.S. Tech will not assume responsibility for
performance of products if application condition is outside of parameters stated forth in the specification.
2. A written request should be submitted to Y.S. Tech prior to approval if abnormality and deviation from
this specification is required.
3. Please be cautious when fan is being exercised or handled. Applying pressure to the impeller, handling
the fan by lead wire, or dropping the fans to the production platform is resulting in damage.
4. The operating voltage and temperature were defined after fan rotating continually at rated voltage.
5. If fan was stocked at an ambient temperature under 5℃ and over 24 hrs. Please stock fans to an
ambient temperature over 20℃ and remained over 24 hrs before using. All specifications include
abnormal noise have to be measured after 30 minute running.
6. Noise Level is different from abnormal noise. Please send abnormal samples to Y.S. TECH to analyze.
We estimate noise level by equation when noise level is lower than background noise (17dB).
7. Starting Voltage was defined on power on/off condition. Rotational speed was defined on full speed
by its rated value.
8. The correct polarity, Positive(+) and Negative(-), has to be clearly identified before connecting the fan
to the power. Be aware of the connection with reverse polarity may lead to damage since no effective
protection can be introduced against such errors.
9. L10 of Life test is a deductive value under statistical method and it is different from product warranty.
10. All general specifications and quality values are measured under condition of free air and fan vertical
set up. Y.S. TECH highly suggests to practic a test when fan apply to a special application.
11. With exception of suitability of some particular designs, any failure and problems regarding safety of
the product caused by the introduction of powder, droplets of water or encroachment of insert in the
hub are not guaranteed.
12. Y.S. Tech fans are not well suited for corrosive environments. This includes liquids, gases, or matters.
13. Except for the feature of the Lock Rotor Protection specifically stated, this feature is not applied to all
fans. Y.S. Tech highly suggests not to stop the impellers of the working fans such interruption will
cause adverse effect.
14. Fans are to be stored in a dry/cool place. High levels of humidity are harmful to products.
15. Please be cautious. Y.S. Tech is not responsible for any excess resonance,
vibration and subsequent noise caused by incorrect mounting of fans.
16. Take necessary precaution handling fans when in operation. Fingre guards are recommended to
prevent personal injury.
17. All test environments are conducted under the condition of relative(ambient) temperature and humidity
at 25℃, 65%. The test result stated above is effective only for unique fan performance.
18. To avoid any unstable power, an “over 4.7 μF” capacitor has definitely be connected to fan externally
whatever multiple fans are applied in parallel.
19. The above conditions are examples of extreme application. However they are very important and
should receive top priority.
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