ANDELI MCT-520DPL Instrukcja obsługi - Strona 5
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10.2.1 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 operating, 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 Performance 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 mark. Before use, use a cable with a section larger than 6mm2 to reliably ground
the welder's casing to discharge static electricity or prevent accidents due to electric leakage.
10.2.6 If the welder exceeds the standard load continuation rate during operation, the welder may suddenly enter the protection state and stop working. This means that the
welder exceeds the standard load continuation rate. Excessive heat energy triggers the temperature control switch, causing the welder to stop working while being in front. The
red indicator light on the panel lights up. In this case, you do not have to unplug the power supply so that the cooling fan can continue to work to cool the welder. When the red
indicator light goes out, the temperature drops to the standard range and the welding can be restarted.
ll.QUESTIONS TO BE RUN INTO DURING CUTTING
The phenomena listed here may be related to the accessories, gases, environmental factors, and power supply conditions you are using. Please try to improve the environment
and avoid such situations.
11.1 the solder joint is black
In such cases, the solder joint is not protected well and is oxidized. You can check as follows:
11.1.1 Confirm that the valve of the argon cylinder is open and has sufficient pressure. If the pressure inside the bottle is less than 0.5MPa, it is necessary to refill the cylinder.
11.1.2 Check that the argon flow is on and has sufficient flow. To save gas, you can choose different flow rates depending on the welding current process, but too small a flow
rate may result in insufficient shielding gas to cover the solder joints. We recommend that you do not let the argon flow rate be less than 31 / min, no matter how small the current
is.
11.1.3 The easiest way to check if there is gas is to use the hand to feel the gas flow from the nozzle of the torch, check whether the gas path of the torch is blocked.
11.1.4 The gas path has a problem of poor sealing, or the purity of the gas is not high, which may cause welding quality problems.
11.1.5 If the environment has strong air flow, it may also cause the welding quality to drop.
11.2 Difficut to ignite arc, and easy to break the arc:
Confirm that the tungsten you are using is of good quality. The discharge capacity of a poor quality tungsten electrode may not meet the requirements.
A tungsten electrode that has not been sharpened is also less prone to arcing and causes arc instability.
11.3 the output current does not reach the rated value:
Deviation of the supply voltage from the rated value will cause the output current value to be inconsistent with the set value; when the supply voltage is lower than the rated value,
the maximum output current of the welder may also be lower than the rated value.
11.4 The current cannot be kept stable during the use of the welder:
This situation may be related to the following factors:
11.4.1 The grid voltage changes.
11.4.2 Serious interference from the power grid or other electrical equipment.
11.5 cutting can not penetrate the steel plate:
11.5.1 Current regulation error.
11.5.2 The air pressure is insufficient.