LORCH ML Serie Instructivo De Servicio página 40

6 Putting into operation
6.5 Coolant
EN - 16
WARNING
Risk of burns
The welding torch cable assembly overheats if the coolant level is too low.
• Wear protective gloves.
• Check the coolant level at regular intervals.
NOTICE
• Check the minimum fill level on the cooling unit.
• Ensure that the coolant supply and return hoses have been correctly
installed. Coolant supply = blue, coolant return = red.
• Do not use deionised or demineralised water as coolant or for leak and
flow tests.
This may shorten your welding torch's service life.
• LORCH recommends the use of coolant from the LCL series for liquid-
cooled welding torches.
 Please consult the applicable safety data sheet.
Bleed the entire cooling system as follows when used for the first time and after
every cable assembly replacement:
 Fig. 5 Mounting the cable assembly on the machine side on page EN-15
1 Disconnect the red coolant return hose (2) from the coolant recirculator (4)
and hold it over a collection receptacle.
2 Seal the opening on the red coolant return hose (2) then re-open it by
abruptly releasing it. Repeat this process until the coolant flows into the
collecting device continuously and without air bubbles.
3 Switch off the coolant recirculator (4) and reconnect the
red coolant return hose (2).
4 Repeat this procedure until the coolant drains out continuously and without
any air bubbles.
MIG/MAG welding torches ML/MW GRIP