ESAB CROSSBOW, Instruction Manual

Page: 16 / 232

ESAB Cutting Systems
CROSSBOW Page 16
1.3 Electrical Grounding
Electrical grounding is required for proper SAFETY and equipment operation. Refer to installation
section for detailed grounding instructions.
ELECTRICAL SHOCK HAZARD.
Improper grounding can cause system damage, severe injury or death. Plasma system must be
properly grounded to the cutting table.
1.4 Service Precautions
AVOID ELECTRICAL DAMAGE.
Extreme caution should be used when probing circuitry with an oscilloscope or voltmeter.
Although many steps have been taken to protect integrated circuits, they are susceptible to over voltage
damage. Test probes should be connected while machine power is off to prevent accidental shorting of
components.
Use caution when handling electronic components. When finished servicing, confirm that all circuit
boards are properly seated, all cables are properly connected, all cabinets are closed, and all guards
and covers are reinstalled.
Never plug or unplug a printed circuit board while machine power is on. Instantaneous surges of
electricity can damage electronic components.
ESTABLISH A COMPREHENSIVE ROUTINE MAINTENANCE SCHEDULE.
A program can be established from recommended schedule in this instruction literature.
NEVER PERFORM ANY ARC WELDING ON THIS MACHINE.
Welding can result in large induced currents. These currents can severely damage electronic
components in the machine control system. Damage caused by welding is considered abuse and voids
warranty provisions.