Troubleshooting preparation
The complexity of the circuits requires that service technicians have a working knowledge of inverter power supply theory. In addition to being technically qualified, technicians must perform all testing with safety in mind. If questions or problems arise during servicing, call the Hypertherm® Technical Services team listed in the front of this manual.
| Warning | |
|---|---|
   | ELECTRIC SHOCK CAN
KILL
Dangerous voltages in the plasma power supply
and at the torch nozzle can cause serious injury
or death.
Set the power to OFF (O), and
disconnect the electric power before removing the cover from the plasma power supply. If
the plasma power supply is connected directly to a line-disconnect box, set the line
disconnect to OFF (O). In the U.S., use a "lock-out / tag-out" procedure until
the service or maintenance work is complete. In other countries, comply with appropriate
national or local safety procedures.
Do not touch live electrical parts! Do
not touch the nozzle when the system is powered ON (I)! If power is necessary for
maintenance, use extreme caution when working near live electrical circuits.
Do not try to repair the power PCB,
control PCB, EMI PCB, or solenoid valve PCB. Do
not cut away or remove the protective conformal
coating from these PCBs. There is a risk of a
short circuit between the AC input circuit and the
output circuit that can cause serious injury or
death.
|
| Warning | |
|---|---|
 | HOT PARTS CAN CAUSE SEVERE BURNS
Let the temperature of the plasma power supply decrease before you do
any maintenance.
|
| CAUTION | |
|---|---|
 | MOVING BLADES CAN CAUSE INJURY
Keep your hands away from moving parts.
|