Meec tools 210-024, Operating Instructions Manual

ENGLISH 

21

Duty factor



The duty factor indicates the on time in % of the total operating cycle time. Duty factor 60% at 
operating cycle time of 10 minutes corresponds to 6 minutes welding and 4 minutes no load. 
Nominal duty factor applies at the nominal current. At lower currents the on time, and with that the 
duty factor, can be higher. 



Never use the unit with a higher duty factor than that stated. 



Overloading and/or too high duty factor can damage the unit and/or shorten its life. 



Overloading can also stop the unit from working. 

Preparation



Use a welding helmet, safety gloves and suitable working clothes. 



Connect the earth clamp to the workpiece and connect the electrode holder to the unit. 



Use a positive or negative connection, depending on the welding electrodes used. 

Use



Connect the unit to the power source and turn on the power source. 



Switch on the unit. The white status lamp comes on. 



Set the required welding current. 



Insert an electrode in the electrode holder and weld. 



Switch off the unit after welding is finished. 



Switch off the power source. 

Miscellaneous



When the overheating protection has not triggered, the yellow status lamp is off. When the 
overheating protection trips the yellow status lamp comes on and it’s not possible to weld. 



The unit can be transported using the carrying strap and handles. 



Long welding cables can reduce the welding current, which can give a poor welding result. 



Fluctuating mains voltage can affect the function of the unit. 



If the mains voltage is more than 10% lower than the nominal input voltage for the unit the following 
can occur. 



  Too low welding current. 



  The welding arc becomes unstable or extinguishes. 



If the mains voltage is more than 20% higher than the nominal input voltage for the unit the 
following can occur. 



  The overheating protection triggers. 



  The unit does not working properly. 



  The light from the arc irritates and causes burns to the eyes and skin. 



  Spatter and slag can cause damage to the eyes and skin. 



  Use welding goggles or a welding helmet. 



  Welding helmets must comply with relevant parts of the standard EN175. 

MAINTENANCE



  Check at regular intervals that the unit is working properly and meets the applicable safety 

requirements. 



  Any improper use can cause a malfunction and damage to property. 



  Switch off the unit and the power source before carrying out maintenance and/or inspections. 



  Regularly clean the unit inside and out with compressed air or a cloth. 



  Regularly check switches, earth connections, conductors, connectors, electrode holder and bolted 

joints. Remove any rust and tighten any loose bolted joints and/or connections. 



  Regularly measure the unit’s insulation resistance. The insulation resistance must be at least 1 M

Ω

between the primary and secondary windings and between windings and earth.



  Repairs and the replacement of parts must only be carried out by qualified personnel.