Precision Control Systems 915 - Manual (Page 6)

Page 3 of 21
Safety
!WARNING!
Hazardous voltages are present at the main disconnect switch and load terminals. Setting the
setpoint potentiometer or control signal to minimum does NOT eliminate these hazardous
voltages.
Always remove AC line voltage from the system before making contact with internal
assemblies, line or load wiring, or fuses. Also remove AC line voltage from the system before
making connections, equipment changes, or resistance measurements.
!CAUTION!
Up to 480 volts AC is present within the power control solution system.
Do not make any wiring connections when power is applied.
Disconnect power before performing any maintenance or service to the system.
Use extreme caution when adjusting calibration potentiometers on modules when power is
applied.
Always use an isolated oscilloscope for checking waveforms.
Section 2