Design and function
Functional characteristics
14
099-008235-EW501
08.05.2017
Coolant mixtures!
Mixtures with other liquids or the use of unsuitable coolants result in material damage and
renders the manufacturer's warranty void!
• Only use the coolant described in this manual (overview of coolants).
• Do not mix different coolants.
• When changing the coolant, the entire volume of liquid must be changed.
Dispose of the coolant in accordance with local regulations and the material safety data sheets
(German waste code number: 70104).
May not be disposed of in household waste.
Prevent entry into sewers.
Absorb with liquid-binding material (sand, gravel, acid-binding agents, universal binding agents,
sawdust).
5.2.3.2 Approved coolants overview
Coolant
Temperature range
KF 23E (Standard)
-10 °C to +40 °C
KF 37E
-20 °C to +10 °C
5.2.3.3 Maximal hose package length
Pump 3.5 bar
Pump 4.5 bar
Machines with or without separate wire feeder
30 m
60 m
Compact machines with additional intermediate
drive (example. miniDrive)
20 m
30 m
Machines with separate wire feeder and additional
intermediate drive (example: miniDrive)
20 m
60 m
Data as a rule refer to the entire hose package length
including welding torch. The pump output is shown on the type plate (parameter: Pmax).
Pump 3.5 bar: Pmax = 0.35 MPa (3.5 bar)
Pump 4.5 bar: Pmax = 0.45 MPa (4.5 bar)
5.3
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 module
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).
