How to see Willett 640 common faults?

Let’s take a look at the common failures of 640 machines. The first is recycling failures. There are two types of recycling failures. One is the ink line deviation, which causes the ink line to fail to reach the recovery tank and reports a recovery failure. The other is the ink line caused by nozzle clogging. Offset, the ink line does not enter the recovery tank, and a recovery failure is reported:

Let me talk about the first one first. The first one is that the screw is loose, which causes the ink line to deviate. This requires adjustment of the ink line. These two screws, adjust the left and right, after the left and right adjustments, the screws are locked:

Then adjust up and down, loosen this screw, and then adjust this screw, so as to adjust the up and down of the nozzle, which is to adjust the ink line:

If the recycling failure is caused by nozzle clogging, the nozzle needs to be cleaned. There is no need to move the screw, and only the nozzle needs to be cleaned. There are nozzle cleaning, one is nozzle cleaning, and the other is strong nozzle cleaning. Two cycles are used:

Nozzle cleaning takes 30 seconds each time, after starting:

Take the cleaning pot and spray the cleaning agent on the nozzle until the cleaning is over for 30 seconds. You can wash it several times, and spray the cleaning agent on the nozzle for each cleaning:

Then there is strong cleaning of the nozzles. The strong cleaning of the nozzles does not require manual cleaning. This takes 10 minutes, and it will automatically perform pressure flushing on the nozzles. One nozzle is cleaned, and the other is strongly cleaned. These two are switched back and forth. This is a recovery failure:

There is also a high-voltage failure. It depends on whether there is dirty ink on the high-voltage board. If there is any, clean it, then blow it dry, and then turn it on. Generally, the operation failure will be eliminated in this way, unless the printing module is damaged. High voltage faults may also occur:

There is also a charging fault. Use a magnifying glass to see the splitting of the ink dots. If the splitting of the ink dots is very good, one small dot and one small dot are splitting well, but if a charging fault is reported, it depends on whether the viscosity is normal. If the viscosity is not normal , it is necessary to adjust the viscosity, and then see if there is an alarm. If the ink dots are not split well, it may be that the nozzle is blocked, the viscosity is high, or the ink core filter is blocked, which may cause charging failure and damage to the main board. Charging failure:

When the new machine is used for the first time, it will report the wrong ink bottle or the wrong solvent bottle, but there is a percentage displayed here, so it is necessary to update the ink core parameters:

In it, there is an update ink core parameter, which needs to be updated once:

In it, there is an update ink core parameter, which needs to be updated once, so that the alarm will be eliminated:

If typing is bad, the recycle bin hangs with ink:

In this case, you need to check the parameters, whether the parameters pressure and viscosity in the diagnosis are normal, and whether the flight speed is also normal:

Also, is this height set too small, if it is too small, it is easy to hang ink:

Then see if the ink dots split well. If the ink dots are not well split, it will also cause bad typing. Because if the ink dots are not well split, the charging will be bad. , the machine must have a ground wire, if the machine does not have a ground wire, there may be ink hanging in the recycling tank, this is about ink hanging in the recycling tank, and the printing is not good:

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