Troubleshooting sequence skills of Delong Family Italian Coffee Machine

Troubleshooting of Italian semi-automatic coffee machine

Fault condition 1: the nozzle steam rod is not out of gas?

Analysis.

This is probably because the small hole in the steam rod sprinkler is blocked by dirt!

Tips for dealing with

Remove the nozzle of the nozzle steam rod with the appropriate small wrench. Use professional cleaning powder to soak the detached sprinkler. In general, the dirt blocked in the nozzle hole can be cleaned up in this way.

Glitch 2: coffee overflows from the coffee handle?

Analysis.

There are usually three reasons for this kind of failure

1. Coffee handle is not locked.

2. There is coffee powder on the edge of the filter of the coffee handle.

3. The rubber ring of the bubble head is aging.

Tips for dealing with

If the first two reasons, only need to correct the mode of operation can be solved. If you encounter the third reason, you only need to replace the head washer on the bubble head to troubleshoot the problem smoothly.

Fault condition 3: the coffee machine can't make coffee?

Analysis.

You can check the power supply first to see if it is powered on properly. If it is determined that it has been powered on normally, the cause of this failure may be:

1. Water got into the coffee machine, causing a malfunction

two。 Coffee powder is ground too finely or pressed too hard.

3. Flowmeter blockage

4. Blockage of current limiting hole in brewing head

5. Solenoid valve does not work

Tips for dealing with

First of all, it should be ruled out that the coffee machine does not work because of irregular operation, such as grinding the coffee powder too fine or filling it too tightly. Secondly, when the coffee machine is powered on, first check whether the light on the Flowmeter of the coffee machine is flashing normally. If the light is off, it is proved that the small hole in the Flowmeter is blocked. After the power is cut off, the Flowmeter is removed and the clogged place is cleared with a fine needle. If the coffee machine does not make a sound as usual when it starts, it may be that the solenoid valve is not working and needs to be replaced. If an appeal inspection is conducted and the reason why the coffee machine is not working can be determined, professional and technical personnel should be asked to repair it.

Be careful

Pay attention to safety when checking the coffee machine and be sure to turn off the power in advance when replacing parts. Don't try to repair it until you know what's wrong with the coffee machine.

Fault condition 4: the coffee produced is not hot enough?

Analysis:

This usually happens for the following reasons

1. Coffee powder is grinded too rough or not pressed hard enough, resulting in the hot water passing through the filter too fast.

2. The coffee handle is not locked on the nose after use, and the temperature of the handle is too low.

3. There is no warm cup

4. The heating tube of the coffee machine is malfunctioning.

Tips for dealing with

First of all, rule out the phenomenon that the coffee produced is not hot enough due to improper operation. If it is suspected that there is something wrong with the heating tube of the coffee machine, you should consult the professional and technical personnel first and do not rush yourself. In addition, if the coffee machine trips as soon as it is heated, it may also be due to the failure of the heating tube.

Common "pseudo failure"

"pseudo-fault" condition one

Coffee machine makes less coffee fat?!

Analysis.

1. There is not enough coffee powder in it.

2. The coffee powder is too coarse.

3. The filling of coffee powder is not flat or tight enough.

4. Freshness of coffee beans.

"pseudo-fault" condition 2

Will the coffee grease turn black (or have a mushy taste)?

Analysis.

1. The coffee powder is too fine.

2. There is too much coffee powder.

3. The problem of strength when pressing powder.