Hitbox CT 520 - Troubleshooting and Fault Finding; Power Indicator and Fan Issues; Abnormal Indicator and High-Frequency Discharge

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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, causi
ng 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.
11.QUESTIONS TO BE RUN INTO DURING CUTTING
The phenomena listed here may be related to the accessories, gases, environmental factors, and
power sup
ply 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, yo
u 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 3l / 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 sea
ling, 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
instab
ility.
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.
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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.
12.TROUBLESHOOTING AND FAULT FINDING
CT-520
Fault
symptom
Remedy
The power
indicator does not
light, the fan does
not turn, no
welding output
1. The power switch is broken.
2. Confirm that the power grid connected to the input cable has power.
3. Check if the input cable has a break.
The power switch
indicator is on, the
fan does not turn
or rotates for a
few times to stop,
no welding output
1. It is possible to input the wrong connection on the 380V power supply, causing the
overvoltage protection circuit to start, and then reconnect it to the 220V power
supply and restart it.
2, 220V power is unstable (the input line is too l
ong) or the input line is connected to the
power grid, causing the overvoltage protection circuit to start, increasing the wire
diameter of the grid input line or fastening the input line node. This phenomenon is
in shutdown 2 - After 3 minutes, the new boot will return to normal.
3. Continuously open and close the power switch in a short time, causing the
overvoltage protection circuit to start. Wait for 2-3 minutes and then restart it.
4. The wires between the switch and the pow
er board are loose and retightened.
5. The main circuit 24V relay on the power supply board is not connected or damaged,
check the 24V power supply and relay.
The fan turns, the
abnormal
indicator light is
not bright, there is
no high-frequency
discharge "sa sa
sa" sound, and the
"arc welding" can
not start the arc.
1. The voltage of the positive and negative poles of the VH-07 plug-in of the multimeter
to the MOS board should be about DC308V.
2. The auxiliary power supply on the MOS board has a green indicator light. If the light is
not on, the auxiliary power supply is not working. Look for the fault point or contact the
dealer.
3. Check the poor connection of various patch cords in the machine.
4. Control circuit problems, find the cause or contact the dealer.
5. The control line on the weldin
g torch is broken.
The abnormal
indicator light is
not lit, there is a
high-frequency
1. The welding gun cable is broken.
2. The ground wire is broken or not connected to the welded workpiece.
3. The positive output terminal or the welding torch gas output terminal is loose from
the connection inside the machine.
。