Design and function
General
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099-002032-EW501
29.04.2010
5
Design and function
5.1
General
DANGER
Risk of injury from electric shock!
Contact with live parts, e.g. welding current sockets, is potentially fatal!
• Follow safety instructions on the opening pages of the operating instructions.
• Commissioning may only be carried out by persons who have the relevant expertise of
working with arc welding machines!
• Connection and welding leads (e.g. electrode holder, welding torch, workpiece lead,
interfaces) may only be connected when the machine is switched off!
CAUTION
Risk of burns on the welding current connection!
If the welding current connections are not locked, connections and leads heat up and can
cause burns, if touched!
• Check the welding current connections every day and lock by turning in clockwise direction, if
necessary.
CAUTION
Using protective dust caps!
Protective dust caps protect the connection sockets and therefore the machine against
dirt and damage.
• The protective dust cap must be fitted if there is no accessory component being operated on
that connection.
• The cap must be replaced if faulty or if lost!
5.2
Machine cooling
To obtain an optimal duty cycle from the power components, the following precautions should be
observed:
•
Ensure that the working area is adequately ventilated.
•
Do not obstruct the air inlets and outlets of the machine.
•
Do not allow metal parts, dust or other objects to get into the machine.
5.3
Workpiece lead, general
CAUTION
Risk of burns due to incorrect connection of the workpiece lead!
Paint, rust and dirt on the connection restrict the power flow and may lead to stray
welding currents.
Stray welding currents may cause fires and injuries!
• Clean the connections!
• Fix the workpiece lead securely!
• Do not use structural parts of the workpiece as a return lead for the welding current!
• Take care to ensure faultless power connections!
