Rectifying faults
Vent coolant circuit
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099-700003-EW501
14.09.2020
Unstable arc
Unsuitable or worn welding torch equipment
Adjust contact tip to wire diameter and -material and replace if necessary
Adjust wire guide to material in use, blow through and replace if necessary
Incompatible parameter settings
Check settings and correct if necessary
Pore formation
Inadequate or missing gas shielding
Check shielding gas setting and replace shielding gas cylinder if necessary
Shield welding site with protective screens (draughts affect the welding result)
Unsuitable or worn welding torch equipment
Check size of gas nozzle and replace if necessary
Condensation (hydrogen) in the gas tube
Purge hose package with gas or replace
Splashes in the gas nozzle
Gas distributor out of order or missing
7.2 Vent coolant circuit
To vent the cooling system always use the blue coolant connection, which is located as deep as
possible inside the system (close to the coolant tank)!
Figure 7-1
Complete the following steps to vent the welding torch:
• Connect the welding torch to the cooling unit
• Switch on the welding machine
Venting the welding torch starts and lasts for approx. 5 to 6 minutes.
