Fronius FK 4000, Operating Instructions Manual, Page: 39 / 52

2
Place a suitable container underneath the cooling unit drain hose to catch the
coolant
3
Pull the drain hose out of the upper recess of the cooling unit and hold it in the con-
tainer
4
Remove the drain hose cap
5
Allow the coolant to flow into the container
6
Dispose of used coolant properly
7
Place the cap on the drain hose
8
Return the drain hose to its original position
(1) (2)
Locking ring on coolant flow connection, sealing cone
inside coolant flow connection
9
Pull back the locking ring (1) on the
coolant flow connection, disconnect
the coolant hose and let go of the
locking ring (1)
10
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
11
Fill to the "max" mark with fresh
coolant
12
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)
13
Connect the coolant flow connection hose to the coolant flow connection
14
Screw the screw cap onto the fill nozzle
Notes on chan-
ging the welding
torch
CAUTION!
Excess pressure will damage the cooling unit.
Before gas purging the welding torch with compressed air, undo the screw cap on the fill
nozzle.
Disposal Dispose of in accordance with the applicable national and local regulations.
39
EN