Electric Shock Prevention - Lincoln Electric FineLine 170HD Operator's Manual

BK8053-000111 Rev D
WARNING

1.8 Electric Shock Prevention

The System uses high open
circuit voltages that can be
fatal. Extreme care should be
used when operating or
performing maintenance on the
System. Only qualified personnel should
service the System. Observe the following
guidelines to protect against electric shock:
• A wall-mounted disconnect switch should
be installed and fused according to local
and national electrical codes. The
disconnect switch should be located as
close as possible to the Power Supply so
it can be turned off in case of an
emergency.
• The primary power cord should have a
600 volt minimum rating in order to protect
the operator. In addition, it should be
sized according to local and national
electrical codes. Inspect the primary
power cord frequently. Never operate the
System if the power cord is damaged in
any way.
• Make sure the primary power ground wire
is connected to the input power ground
stud on the Power Supply. Make sure the
connection is securely tightened.
• Make sure the positive output (work
ground) of the Power Supply is connected
to a bare metal area on the cutting table.
A driven ground rod should be placed no
further than five feet from this connection.
Make sure this ground point on the cutting
table is used as the star ground point for
all other ground connections.
• Inspect the torch leads frequently. Never
use the System if the leads are damaged
in any way.
• Do not stand in wet, damp areas when
operating or performing maintenance on
the System.
This information is subject to the controls of the Export Administration Regulations [EAR]. This information shall not be provided to
non-U.S. persons or transferred by any means to any location outside the United States contrary to the requirements of the EAR.
• Wear insulated gloves and shoes while
operating or performing maintenance on
the System.
• Make sure the System is switched off at
the wall disconnect before servicing the
Power Supply or torch.
• Never change torch consumable parts
unless the System is switched off at the
wall disconnect.
• Do not attempt to remove any parts from
beneath the torch when cutting.
Remember that the workpiece forms the
current path back to the Power Supply.
• Never bypass the safety interlock devices.
• Before removing any of the covers, switch
the System off at the wall disconnect.
Wait at least five (5) minutes before
removing any cover. This will give the
capacitors inside the unit time to
discharge.
• Never operate the System without all of
the covers in place.
• Preventive maintenance should be
performed daily to avoid possible safety
hazards.
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FineLine 170HD Plasma System