The welder must be properly grounded rear can use to safeguard the personal safety. Welding machine before use to use 500 v megohmmeter test welding between high side and the chassis of the insulation resistance is not lower than 2.5 megohm before electricity. Maintenance to cut off power supply first, before the crates. Water before welding, welding machine without water is prohibited. Cooling water should guarantee at 0.15-0.2 MPa water pressure 5-30 ℃ of industrial water supply. After the winter welder work using compressed air to the water in the pipe blowing off to avoid frost crack pipes.

Welding wire is unfavorable to go too long, the voltage drop, when welding shall not be greater than 5% of the initial voltage, initial voltage can''''t deviate from the power supply voltage of plus or minus 10%. Welding gloves, aprons and protective glasses should be worn when operating, so as to avoid the Mars fly out of burns. After the sliding part should keep good lubrication, use the metal splash should be removed. New welding machine began to use after 24 hours, all parts shall be screw fastening, soft and pay particular attention to the copper electrode connection between the screw must be tightened well, after use shall be regularly remove oxide electrode bar and electrode arm, to ensure good contact.

Welding machine when using ac contactor and false is found, that power grid voltage is too low, the user should first solve the problem of power supply, power supply is normal rear can use. It should be pointed out that, newly purchased welder if main parts quality problem within half a month, can replace the new welding machine or change the main parts. Welding machine main machine warranty for one year, long-term to provide maintenance services. Usually after the user to inform the manufacturer, according to the service in place far three to seven days. Because users caused by the damage of welding machine is beyond the scope of the warranty. Wearing parts and consumable parts is beyond the scope of the warranty.

Due to the electrode contact area decided the current density, resistivity of electrode materials and the relationship of thermal conductivity with heat generation and lost, therefore, the shape of the electrode and the material has a significant influence on the formation of a melt nuclear. As the electrode end of deformation and wear, the contact area increases, solder joint strength will reduce. Oxide on the surface of the workpiece, dirt, oil and other impurities increases the contact resistance. A thick oxide layer and even made the current cannot pass. Local conduction, due to the large current density, can produce splash and surface burn. The existence of the oxide layer can also affect the non-uniformity of the solder joint heating, welding quality fluctuations caused. So clean up the workpiece surface is the necessary condition to ensure access to quality connectors