Fronius FK 4000 - Changing the Coolant

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If a large amount of dust has accumulated:
- Remove device side panels and clean inside of device with dry reduced compressed
air
Changing the
coolant
NOTE!
The coolant must not be disposed of in the public sewage system.
Dispose of coolant in accordance with the applicable local and national regulations.
NOTE!
Use only original Fronius coolant when refilling the cooling unit.
Changing the coolant:
Undo the screw cap on the fill nozzle
Place a suitable container underneath the cooling unit drain hose to catch the coolant
Pull the drain hose out of the upper recess of the cooling unit and hold it in the con-
tainer
Remove the drain hose cap
Allow the coolant to flow into the container
Dispose of used coolant properly
Place the cap on the drain hose
Return the drain hose to its original position
Locking ring on coolant flow connection, sealing
cone inside coolant flow connection
Pull back the locking ring (1) on the
coolant flow connection, disconnect
the coolant hose and let go of the
locking ring (1)
Carefully push back the sealing cone
(2) in the centre of the coolant flow
connection using a wooden or plastic
pin (Ø = max. 6 mm / 0.236 in.), until
it audibly engages
Fill to the "max" mark with fresh cool-
ant
Pull back the locking ring (1) on the
coolant flow connection to release the
sealing cone again (2) and then let go
of the locking ring (1)
Connect the coolant flow connection hose to the coolant flow connection
Screw the screw cap onto the fill nozzle
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