Coffee machine maintenance Delong coffee machine common faults and treatment

1 Delon Coffee 3000Coffee 4000 Series Coffee Machine is powered on, the warning light is always on and the machine does not work.

After entering the test mode, start the motor, the motor has a slight action, but does not work. After inspection, the bridge stack on the circuit board (rectifier bridge) is damaged, replace the bridge stack, troubleshooting.

2 Delong coffee machine 3000, 4000 series, fault: the amount of coffee can not be adjusted, the water shortage lamp flashes, but it can make coffee, after putting hot water, the water shortage light is not on, but after making a cup of coffee, the water shortage lamp flashes again.

The water meter is broken

3 release steam, no steam, later, the water shortage indicator flashes.

There may be something wrong with the pump

4 if the automaton bean grinder has finished grinding, the water pump starts to work to make coffee and suddenly removes the water tank, what will happen, what accessories will break down, and how to deal with it.

The water tank should be put back and hot water should be released.

The thermal protector of the heater is easy to damage.

5 Delong coffee machine 3500 6600, after being turned on, there is no Ready message for a long time, and finally GENERICALARM appears.

Check if there is heat in the warm cup area.

Usually the heater doesn't work, check the temperature protector.

6 as the customer did not completely shut down the case, the extractor will be forcibly pulled out, and forced installation, but the water plate is not in place, how to solve the fault without dismantling the machine?

Unplug the power supply

Manually reset the coffee grounds and door switch

Switch (the power) on

Automatic reset of extractor

(7) the pillar used to fix the extractor in the shell part has been broken, how to solve it?

The original plastic pillars should be removed and the copper pillars provided by the company should be replaced.

8 Delon coffee machine EAM3000,4000 series coffee machine, press the key, sometimes can not turn on, sometimes can not turn off, coffee powder lamp (the light in the lower right corner) will light up for no reason, sometimes the hand touches the coffee powder key, without pressing the button, the light will come on.

Replace the panel circuit board and troubleshoot.

9 automatic coffee machine extractor stuck to the water plate, resulting in start-up can not be up and down, the water plate and extractor can not be taken out

It is estimated that this fault is caused by the customer incorrectly cutting off the power plug, open the back cover of the machine, receive the rotating pulley, make the extractor rise to a slightly higher position, then check the power supply, turn on, and troubleshoot.

10 Delon EAM3000,4000 series coffee machine, just started to make coffee, the knobs and buttons on the panel function normally, but after making 2-3 cups, the knobs and buttons are confused, such as rotating the coffee powder knob, the water shortage light will always be on.

Replace the panel circuit board, troubleshooting, but carefully observe the working process of the coffee machine, found that the boiler interface steam leakage, estimated steam into the panel circuit board, resulting in panel function failure. Replace boiler seal gasket 5332107700, troubleshooting.

11 extractor can not be taken out, observe that the extractor is at the top. One, two, the alarm light is always on.

After entering the functional test mode, the extractor can move up, but not down. after inspection, the extractor motor is broken, replace the motor and troubleshoot.

The voltage at both ends of the motor is normal. When moving up, F8 is positive, F7 is negative, and the voltage value is 200V. After reaching the top, the voltage disappears and 1 cup light is on. When the 2-cup key is pressed, the extraction part walks downwards, F8 is negative voltage, F7 is positive voltage, and the voltage value is 200V. After reaching the bottom, the voltage disappears and the 2-cup lamp is on.

One cup, two drinks, warning light on.

It may be that the extractor motor is broken, the general motor resistance value is about 200 ohms, if it is too small or open, it should be judged as motor damage. Since this motor is a DC motor, the measuring motor needs to be turned to the motor by hand, and the resistance value is measured in each gear.

If the resistance value is too small, the circuit board may also be damaged, so the circuit board cannot be replaced first, lest the motor burn the circuit board again. If the power is plugged in and the relay sound on the circuit board cannot be heard, it is estimated that the circuit board needs to be replaced.

When coffee comes out of the water, it is dripping, not a current.

After the purchase of the automatic coffee machine, the first few times of use are normal, but after several times of use, the above problems will occur, and check the thickness of the coffee powder is also normal. At this time, it is necessary to check whether there are two pieces of metal filter on the extractor. If there are two pieces, remove one piece, and the fault will disappear.