Design and function
Transport and installation
14
099-008593-EW501
26.07.2019
5.2.3.4 Adding coolant
If the cooling system is empty or only insufficiently filled with coolant, the coolant pump is auto-
matically switched off after approx. one minute (protection against destruction). At the same ti-
me, the welding data display signals the lack of coolant or low coolant level.
• Reset the coolant error, fill coolant and repeat the operation.
The unit is supplied ex works with a minimum level of coolant.
Figure 5-2
Item Symbol Description
0
1
Coolant tank cap
2
Coolant filter sieve
3
Coolant tank
> see 5.2.3 chapter
4
"Min" mark
Minimum coolant level
• Unscrew and remove the coolant tank sealing cover.
• Check filter sieve insert for dirt, clean if necessary and reinsert into position.
• Top up coolant to the filter sieve insert, close sealing cover again.
The level of coolant must never fall below the “min” mark.
If there is less coolant in the coolant tank than the minimum required you may need to vent the
coolant circuit. In this case the welding machine will automatically shut down the coolant pump
and signal an error,
> see 7.2 chapter
.
5.2.4 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 module
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).