Danger: WORKING WITH ELECTRICAL SERVICES REQUIRED FOR A CNC ARE EXTREMELY
HAZARDOUS. ALL POWER TO CNC MUST BE TURNED OFF LOCKOUT-TAGOUT AT THE SOURCE
PRIOR TO CONNECTING THE LINE WIRES TO CNC. HOWEVER, IF THIS NOT THE CASE OR ARE NOT
SURE HOW TO DO THIS, CHECK WITH APPROPIATE PERSONNEL OR OBTAIN THE NECESSARY HELP
BEFORE CONTINUING. ALWAYS CHECK THE INCOMING LINES WITH AN AC VOLTAGE DETECTOR TO
MAKE SURE POWER HAS BEEN DISCONNECTED.
1
Initial Control Inspection
Danger: At this point, there should be no electrical connection to the machine. Electrical panel must be
closed and secured. When main switch is on, there is HIGH VOLTAGE throughout the electrical panel
(including the circuit boards and logic circuits) and some components operate at high temperatures.
Therefore, exercise extreme caution when working in the panel.
Set the main breaker switch at the upper right of the electrical panel on the back of the machine to OFF.
Using a screwdriver, unlock the two latches on the panel door, unlock the cabinet with the key and open
the door.
Take sufficient time to check all the components and connectors associated with the circuit boards.
Look for any cables that have become disconnected, look for any signs damage and loose parts in the
bottom of the panel box. If there are any signs that the machine was mishandled, call the factory before
proceeding.
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