Fronius FK 4000, Operating Instructions Manual, Page: 37 / 52

Symbols for care
and maintenance
of the cooling
unit
(1)
(2) (3)
(4)
(1) Check coolant level
(2) Change the coolant
(3) Gas purge the cooler
(4) Read operating instructions
The relevant maintenance intervals and
work are described in detail in the follow-
ing pages.
Maintenance
intervals, main-
tenance work
At every start-up
CAUTION!
Risk due to start-up without coolant.
This can result in serious damage to property.
▶
If water-cooled system components are operated without coolant, this will normally
result in the failure of the system components.
Fronius shall not be liable for any damage resulting from such action. In addition, no
warranty claims will be entertained.
- Ensure that all the hosepacks, the welding torch and the ground earth connection
are undamaged
- Check that there is an all-round clearance of 0.5 m (1 ft 7.69 in.) to ensure that cool-
ing air can flow in and out freely
- Check the screw connections between all system components for tightness
- Check all the coolant connections of the welding system for tightness
- Monitor the coolant return flow in the coolant container
-
If no coolant is returning to the container, identify and remedy the cause
Once a week
- Check coolant level. If the coolant level is below the "min" mark, top up with coolant
- Check the purity of the coolant. Change the coolant if necessary
CAUTION!
Risk from non-permitted coolant.
This can result in serious damage to property.
▶
Use only original Fronius coolant (Cooling Liquid FCL 10/20 or torch coolant) when
filling the cooling unit.
▶
Other coolants are not recommended for electrical conductivity and material compat-
ibility reasons.
Every 2 months
- If present: Check the coolant filter for dirt and clean if necessary
Every 6 months
- Gas purge the cooler
37
EN