Safety and Precautions
1. Read this manual in its entirety before installing or operating the Electronic bypass
package. This manual applies to Electronic bypass packages with the Emerson Control
Techniques Commander HSK or Affinity VFDs, and control board part number
1067144-01, and is not intended to be used with any other products.
2. Do not connect or disconnect wiring, or perform signal checks while the power supply is
turned ON
3. The internal capacitor of the installed VFD may be charged even after the power supply
has been turned OFF. To prevent electrical shock, disconnect all power before servicing
the Electronic bypass. Please wait at least 10 minutes after the power supply has been
disconnected and all LEDs have been extinguished.
4. Do not perform a voltage withstand test on the Electronic bypass or the installed VFD.
This electronic equipment uses semi conductors and is vulnerable to high voltage.
Severe damage to the equipment may occur.
5. Do not remove the digital operator from the inverter unless the power supply has been
turned OFF. Never touch the printed control board while the power supply is turned on.
6. The Electronic bypass is suitable for use on a circuit capable of delivering not more that
100,000 RMS symmetrical amperes, 480 Volts maximum (460 Volt Class units), 240 volts
maximum (230 Volt class units).
7. Static sensitive printed circuit boards are installed in the Electronic bypass package.
Damage may occur due to ESD Electrostatic Discharge. DO NOT handle any
components without following proper ESD precautions.
Failure to observe these and other precautions highlighted in this manual will
expose the user to high voltages, resulting in equipment damage, serious injury or
death.
The information contained within this document is proprietary to Emerson Control Techniques and
may not be copied, reproduced or transmitted to other parties without the expressed written
consent of Emerson Control Techniques.
No patent liability is assumed with respect to the use of information contained herein. Moreover,
because Emerson Control Techniques is constantly improving its high quality products, the
information contained in the manual is subject to change without notice. Every precaution has
been taken in the preparation of the manual. Nevertheless, the manufacturer assumes no
responsibility for errors or omissions. Neither is liability assumed for damages resulting from the
use of the information contained in this publication.
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