TCI KMG - Manual (Page 6)

6
General Safety Instructions
These safety instructions are intended for all work on the MotorGuard. Additional safety instructions
are provided at appropriate points on other sections of this manual.
Warning Be sure to read, understand, and follow all safety instructions.
Warning Only qualified electricians should carry out all electrical installation and maintenance work on the
MotorGuard.
Warning All wiring must be in accordance with the National Electrical Code (NEC) and/or any other codes that
apply to the installation site.
Warning Disconnect all power before working on the equipment.
Do not attempt any work on a powered MotorGuard.
Warning The MotorGuard, VFD, motor, and other connected equipment must be properly grounded.
Warning The MotorGuard receives power from two or more sources.
Three-phase power from the output terminals of the VFD is connected to the main input terminals of
the MotorGuard.
Power from a single-phase 120, 240 or 480 volt supply is connected to the MotorGuard for the cooling
fan and monitor board.
The monitor board alarm contacts may be connected to a circuit that receives power from another
source.
All of these sources of power must be disconnected before working on the MotorGuard.
Warning After switching off the power, always allow 5 minutes for the capacitors in the MotorGuard and in the
VFD to discharge before working on the MotorGuard, the VFD, the motor, or connecting wiring. It is
good practice to check with a voltmeter to make sure that all sources of power have been disconnected
and that all capacitors have discharged before beginning work.
Warning The VFD output terminals and the motor cables are at a dangerously high voltage when power is
applied to the VFD regardless of motor operation.
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