Emerson 1410 Service Manual Page 197

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Safety Notes
AXP 1410 Installation and Use (6806800H70D)
197
System Malfunction
Prior to the PEM exchange the operating voltage conditions of the system should be made
optimal.
To ensure uninterrupted service during PEM exchange, the input voltage should be kept at
nominal -48 V to -60 VDC.
Injury or Short Circuits
Blade or Power Supply
In case the ORing diodes of the product fail, the product may trigger a short circuit between
input line A and input line B so that line A remains powered even if it is disconnected from the
power supply circuit (and vice versa).
To avoid damage or injury, always check that there is no more voltage on the line that has been
disconnected before continuing your work.
Personal Injury
At the system’s rear there are sharp pins which can cause injury.
Be careful when handling the system.
Grounding
Electric Shock
Power Cable
To minimize shock hazard, the system chassis and enclosure must be connected to an
electrical ground. Failure to observe proper grounding practices may cause a variety of noise,
electrostatic discharge, and radio frequency interference problems.
Damage of Circuits
Electrostatic discharge and incorrect product installation and removal can damage circuits or
shorten their life.
Before touching the product or electronic components, make sure that you are working in an
ESD-safe environment.
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