Functional characteristics
Transport and installation
099-008268-EW501
21.02.2022
21
7
Functional characteristics
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 mo-
dule and welding machine must be disconnected!
The cooling modules (pump and fan) are controlled by the welding machine only.
The welding machine automatically detects and displays a lack of coolant
(see the welding machine operating instructions).
7.1.1 Welding torch connection
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 mo-
dule and welding machine must be disconnected!
• Lock connecting nipples of the cooling water tubes into the corresponding quick connect couplings:
Return line red to quick connect coupling, red (coolant return) and
supply line blue to quick connect coupling, blue (coolant supply).
