Design and function
Welding torch cooling system
30
099-005444-EW501
17.03.2015
5.6
Welding torch cooling system
CAUTION
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.
Insufficient frost protection in the welding torch coolant!
Depending on the ambient conditions, different liquids are used for cooling the welding
torch - See 5.6.1 List of coolants chapter.
Coolants with frost protection (KF 37E or KF 23E) must be checked regularly to ensure
that the frost protection is adequate to prevent damage to the machine or the accessory
components.
• The coolant must be checked for adequate frost protection with the TYP 1 frost protection
tester .
• Replace coolant as necessary if frost protection is inadequate!
The disposal of coolant must be carried out according to official regulations and observing the
relevant safety data sheets (German waste code number: 70104)!
Coolant must not be disposed of together with household waste.
Coolant must not be discharged into the sewerage system.
Recommended cleaning agent: water, if necessary with cleaning agent added.
5.6.1
List of coolants
The following coolants may be used - See 9 Accessories chapter:
Coolant
Temperature range
KF 23E (Standard)
-10 °C to +40 °C
KF 37E
-20 °C to +10 °C
5.6.2
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)
