Maintenance; Regular Maintenance; Every Sixth Months; Service Contract - Kemppi MasterTig MLS 2500 Operation Instructions Manual

4. MAINTENANCE

Watch out for mains voltage when handling electric cables!
Degree and circumstances of machine utilisation should be taken into consideration when plan-
ning product maintenance. Careful use and preventive maintenance help to avoid unnecessary
production disturbances and breaks. Check the condition of the welding and connection cables
daily. Do not use damaged cables.

4.1. REGULAR MAINTENANCE

4.1.1. Every sixth months

NOTE! Disconnect the plug of the machine from the mains socket and wait for ca. 2 minutes
(capacitor charge) before removing the casing plate.
The following maintenance operations should be carried out at least every sixth months:
• Electric connections of the machine - clean any oxidised parts and tighten any loose
ones. NOTE! You must know the correct tension torques before you start repairing
the connections.
• Clean the inner parts of the machine from dust and dirt e.g. with a soft brush and a
vacuum cleaner. Do not use compressed air because there is the danger that the dirt
is packed even more tightly in the gaps of the cooling profiles. Do not use a pressure
washer.
Only an authorised electrician may repair the machine.

4.1.2. Service contract

KEMPPI service workshops make special service contracts with customers about regular main-
tenance. All parts are cleaned, checked and if necessary, repaired. Also the operation of welding
machine is tested.

4.2. TROUBLESHOOTING

Power On light is not lit.
There is no power in the machine.
• Check mains fuses, replace blown fuses.
•
Check mains cable and plug, replace defect parts.
The machine is not welding properly.
There are plenty of spatters during welding. Weld joint is porous or power supply is insufficient.
• Check welding settings and adjust if needed.
• Check gas flow and gas hose connection.
• Check that earth clamp is properly fastened and that earth cable has no defects.
Change the position if necessary and replace defect parts.
• Check welding torch cable and connector. Tighten the connection and replace
defective parts.
• Check the consumable parts of welding torch. Clean and replace defect parts.
• Check mains fuses, replace blown fuses.
18 – Master(tig) 2500, 2503, 3500, 3503 MLS™/ 0311
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