Fronius CU 800i - Cleaning coolant return filter

Every 2 months
- If present: clean the coolant return filter on the outside of the unit and replace the
filter element if necessary
Every 6 months
- Gas purge the cooler
Every 6 months in 3-shift operation with ethanol-based coolant
- Gas purge the cooler
- Change the coolant
Every 12 months in single-shift operation with ethanol-based coolant
- Change the ethanol-based coolant
Every 12 months in 3-shift operation with FCL 10/20 coolant
- Change the coolant
- CU1200i Pro /MC only: clean the coolant pre-filter in the interior of the unit and re-
place the filter insert if necessary
Every 24 months in single-shift operation with FCL 10/20 coolant
- Change the coolant
Cleaning the
coolant return fil-
ter on the outside
of the unit
WARNING!
Danger from welding current and accidental ignition of an arc.
This can result in serious injury and damage to property.
▶
Disconnect the ground earth connection between the welding system and the work-
piece.
▶
Remove the wire electrode from the welding torch being used.
▶
Depending on the system, remove the wirespool or the basket-type spool from the
power source or the wirefeeder.
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