Fronius FK 4000, Руководство по эксплуатации, Страница: 36 / 52

Care, maintenance and disposal
Safety
WARNING!
Danger due to work that has been carried out incorrectly.
All the work described below must only be carried out by trained and qualified personnel.
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Fully read and understand this document.
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Fully read and understand all the Operating Instructions for the system components,
especially the safety rules.
WARNING!
Danger from electric current.
An electric shock can be fatal.
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Turn the power source mains switch to the "O" position.
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Disconnect the power source from the mains.
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Ensure that the power source remains disconnected from the mains until all work
has been completed.
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After opening the device, use a suitable measuring instrument to check that electric-
ally charged components (e.g. capacitors) have been discharged.
WARNING!
Danger from inadequate ground conductor connection.
This can result in serious injury and damage to property.
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The housing screws provide a suitable ground conductor connection for earthing the
housing and must NOT be replaced by any other screws that do not provide a reli-
able ground conductor connection.
CAUTION!
Danger from hot coolant.
This can result in severe scalds.
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Wait until the coolant has cooled down before carrying out any of the activities
described below.
CAUTION!
Risk from coolant leakage.
This can result in serious damage to property.
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Make sure that no coolant gets into the device.
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If there is any coolant on the exterior of the cooling unit, remove it immediately.
General Under normal operating conditions, the device requires only a minimum of care and
maintenance. However, it is vital to observe some important points to ensure the welding
system remains in a usable condition for many years.
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