Safety considerations for troubleshooting
Before you start troubleshooting for a problem, make sure to read, understand, and comply with all of the safety instructions.
For more safety information, refer to Qualifications of service personnel and the Safety and Compliance Manual (80669C).
| Warning | |
|---|---|
  | ELECTRIC SHOCK CAN KILL
The plasma power supply contains dangerous electric voltages that can
seriously injure or kill you. Even if the plasma power supply is turned OFF, you
can still get a serious electric shock if the plasma power supply remains
connected to an electric power source.
Use extreme caution if you do diagnosis or maintenance tasks when the
plasma power supply remains connected to an electric power source and the outer
cover or panels are removed. All work that requires removal of the plasma power
supply outer cover or panels must be done by a qualified technician. Refer to
the Safety and Compliance Manual (80669C) for more safety
information.
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| Warning | |
|---|---|
 | ELECTRIC SHOCK CAN KILL
If the line-disconnect switch is not in the OFF position you can get a
serious electric shock. Electric shock can seriously injure or kill
you.
The line-disconnect switch must be in the OFF position before you
connect the power cord to the cutting system. It must REMAIN in the OFF position
until all installation steps are complete. In the United States, use a "lock
out/tag out" procedure until installation is complete. In other countries,
follow the appropriate national and local safety procedures. Refer to the
Safety and Compliance Manual (80669C) for more safety
information.
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| Warning | |
|---|---|
| ELECTRIC SHOCK CAN KILL
Voltages in the cutting system can cause serious electric shock.
Electric shock can seriously injure or kill you.
When the line-disconnect switch is in the ON position, there is line
voltage throughout the cutting system. Use extreme caution if you do diagnosis
or maintenance tasks when the line-disconnect switch is in the ON
position.
|
| Warning | |
|---|---|
| ELECTRIC SHOCK CAN KILL
Voltages at the terminal block and contactors can cause injury or
death.
When the line-disconnect switch is in the ON position, there is line
voltage at the contactor and the power distribution Printed Circuit Board (PCB). Use extreme caution
when you measure the primary power in these areas.
|
| Warning | |
|---|---|
  | HYDROGEN GAS CAN CAUSE AN EXPLOSION OR FIRE
Hydrogen is a flammable gas that can cause an explosion or fire if it
is not removed.
Keep flames away from cylinders and hoses that contain hydrogen. Keep
flames and sparks away from the torch when using hydrogen as a plasma
gas.
Consult your local safety, fire, and building code requirements for the
storage and use of hydrogen.
Hypertherm recommends that you install an exhaust ventilation system to
remove the hydrogen-enriched atmosphere that can collect when hydrogen is used
as the plasma gas for cutting.
Flashback arrestors are REQUIRED to stop the spread of fire to the
supply gases (unless a flashback arrestor is not available for a specific gas or
pressure).
As an installer or user, you must supply the exhaust ventilation and
flashback arrestors for your cutting system. You can get them from your cutting
machine supplier.
|
| Warning | |
|---|---|
| OXYGEN GAS CAN CAUSE A FIRE HAZARD
If you use oxygen as the plasma gas for cutting, it can cause a
potential fire hazard due to the oxygen-enriched atmosphere that collects. A
fire can occur if oxygen is not removed.
Hypertherm recommends that you install an exhaust ventilation system to
remove the oxygen-enriched atmosphere that can collect when oxygen is used as
the plasma gas for cutting.
Flashback arrestors are REQUIRED to stop the spread of fire to the
supply gases (unless a flashback arrestor is not available for a specific gas or
pressure).
As an installer or user, you must supply the exhaust ventilation and
flashback arrestors for your cutting system. You can get them from your cutting
machine supplier.
|
| Warning | |
|---|---|
 | MACHINE MOTION CAN CAUSE INJURY
The end-use customer and the cutting machine supplier are responsible
for providing protection against the hazardous moving parts of this cutting
system. Read and follow the instruction manual provided by the cutting machine
supplier. Refer to the Safety and Compliance Manual (80669C) for
more safety information.
|
| CAUTION | |
|---|---|
 | MOVING BLADES CAN CAUSE INJURY
Keep your hands away from moving parts.
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| Notice | |
|---|---|
INCORRECT GAS PRESSURES CAN CAUSE BAD PERFORMANCE
Gas leaks or pressure and flow rates that are outside of recommended
ranges can cause problems with system performance, result in bad cut quality,
and shorten the life of consumables.
If the quality of the gas is bad or if the pressure setting is
incorrect, it can decrease cut quality, cut speed, and cut thickness
capabilities.
Make sure the incoming gas pressure aligns with system
specifications.
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| Notice | |
|---|---|
RISK OF SPARKS
Sparking and damage to the printed circuit board (PCB) can occur.
Never fire an arc when a temporary jumper wire is installed on the
PCB.
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| Notice | |
|---|---|
RUST IN GAS CYLINDERS CAN GET INTO THE GAS LINE
Rust can collect at the bottom of gas cylinders. If the rust mixes with
the gas, it can get into the gas line and decrease cut quality and
performance.
When you move gas cylinders, make sure that you do not put them on their
side, roll, or shake them.
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