WARNING:
It is strictly forbidden to insert or remove any cable or connector in use during the
welding process. This operation will endanger personal safety and cause serious
damage to the equipment.
8.MAINTENANCE
WARNING
：
Power must be turned off for all checking and maintenance, before opening the
housing, make sure the power plug is disconnected.
8.1 Remove dust by dry and clean compressed air regularly, if welding machine is operating in
environment where is polluted with smokes and pollution air, the machine need removing dust
everyday.
8.2 Pressure of compressed air must be inside the reasonable arrangement in order to prevent
damaging to small components of inter-machine.
8.3 Check
inter circuit of welding machine regularly and make sure the cable circuit is connected
correctly and connectors are connected tightly (especially insert connector and components). If
scale and loose are found, please give a good polish to them, then connect them again tightly.
8.4 Avoid water and steam enter into inter-machine, if they enter into machine, please dry
inter-machine then check insulation of machine.
8.5 If welding machine will not be operated long time, i
t must be put into packing box and store
in dry environment.
8.6 When wire machine operates for every 300 hours, the electric carbon brush and armature
rectifier should be polished, the reducer should be cleaned, and lubricator should be added to
the turbo and bearing.
9.NOTES BEFORE CHECKING
WARNING
Blind experiment and careless repair may lead to more problems and make formal check and
repair more difficult. When the machine is electrified, the bared parts contain life-t
hreatening
voltage. Any direct and indirect touch will cause electric shock, and severe electric shock will
lead to death.
NOTICE: In the period of guarantee maintenance, if user makes wrong check and repair
for malfunction
of welding/cutting machines without our permission, the free maintenance guarantee
offered will be invalid
10.PRECAUTIONS
10.1 Surroundings
10.1.1 The welding operation should be carried out in a relatively dry environment, and the air
humidity should generally not exceed 90%.
10.1.2 The ambient temperature should be between -10C and 40C.
10.1.3 Avoid welding in daylight or rain, and do not allow water or rain to seep into the welder.
10.1.4 Avoid welding work in dusty areas or in corrosive atmospheres.
Avoid gas-shielded welding operations in environments with strong air flow.
10.2 Safety
1
0.2.1 Overvoltage, overcurrent and overheat protection circuits have been installed in our
welding machine. When the grid voltage, output current and internal temperature exceed the set
standard, the welder will automatically stop working; but excessive use (such as voltage over
High) will still cause damage to the welder, so you still need to pay attention to the following
matters
10.2.2 Ensure good ventilation
Our welding machine is a small welding machine. When ope
rating, there is a large working
current, and natural ventilation can not meet the cooling requirements of the welding machine.
Therefore, a fan is installed to effectively cool the welding machine to make it work smoothly.
The user should confirm that the ventilation is not covered or blocked, and the distance between
the welder and the surrounding objects should be no less than 0.3 meters. The user should
always pay attention to maintain good ventilation, which is better
for the welder and guarantees
a longer service life. very important.
10.2.3 No current overload
The user should remember to observe the maximum allowable load current (relatively selectable
load continuation rate) and keep the welding current not exceeding the maximum allowable load
current.
Current overload will significantly shorten the life of the welder and may even burn the welder.
10.2.4 No too high voltage
The power supply voltage is listed in the “Main Performa
nce Parameters” table. Under normal
circumstances, the voltage automatic compensation circuit in the welder will ensure that the
welding current is kept within the allowable range. If the power supply voltage exceeds the
allowable value, the welder will be damaged and the user should fully understand the situation
and take appropriate precautions.
10.2.5 A grounding screw is attached to the rear of each welder and marked with a grounding
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