MONTHLY MAINTENANCE
YEARLY MAINTENANCE
17 Unpacking
Page 31
Expressweld MasterMIG 500W
- Make sure that the cooling fan is not damaged and turns normally. If the fan doesn t
operate even after the overheating of the machine, check if the propeller of the fan is
blocked. If the fan is damaged contact with authorized service.
Check if the welding connections are loose or overheated. If there is overheating or
loosening, tighten the connections or contact with authorized service.
Check if the current cable is damaged. If it is damaged, insulate the damaged part by
wrapping with a proper material or replace the cable with the new one.
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- By using dry air compressor clean the internal part of the machine to remove
accumulated dusts. To protect small parts, be carefull about the air pressure used in
cleaning.
Check the screws on the machine and if they are loosen, tighten. If there is missing
screw, always install a new one. Replace rusted screws with the new ones.
Check the conditions of all electric connections and tighten loosed connections when
necessary.
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- Measure insulation impedance on main transformer, PCB and body. If the
measurement value is under 1M , this means there is damage. In this case contact
with authorized service.
Check the continuity of the grounding. Do not perform this test on your own, contact
with authorized service.
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EXPRESSWELD MasterMIG 500W Gas Metal Arc Welding Machine sold in its original
cartoon box and on a pallet. Do not purchase the machines without packaging. To
unpack the machine, cut the strap connected to the pallet and lift up the box.
Do not dispose of the box and keep it for future transporting and storing.
