Design and function
Connecting the supply lines
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099-008091-EW501
11.11.2011
5.4 Connecting the supply lines
WARNING
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
Overloading the coolant pump!
The cooling unit must not be put into operation without a welding torch connected, as
otherwise the coolant pump will be destroyed due to thermal overload (the coolant
cannot circulate in the coolant circuit).
• Connect the coolant connections for the water cooled welding torch to the cooling module.
• If air-cooled welding torches are used, the control and supply line between the cooling
module and welding machine must be disconnected!
NOTE
Reserve length for control and supply cable!
When using high systems such as AC/DC machines or systems with several modules
(welding machine + multivoltage module + cooling module) the cable length has to be
adapted.
To do so, loosen the knurled nuts of the strain reliefs for the control and supply cables
at the back of the machine. Pull out both connection cables slowly and evenly for a
length of approx. 120 mm. Screw both strain reliefs tight again.
Coolant connections
• Plug in the welding torch coolant connections and fit tightly onto the rapid-action closure couplings:
red rapid-action closure coupling Æ return of coolant from the welding torch
blue rapid-action closure coupling Æ supply of coolant to the welding torch.
Control and supply lead to the welding machine
• The cooling module and welding machine are connected using two leads.
• Insert control lead plug into the welding machine.
• Insert supply lead plug into the welding machine.
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