How to repair a dishwasher?

For hotels and other catering institutions, the importance of commercial dishwashers is self-evident. When repairing, it is necessary to take appropriate measures. For example, if the dishwasher is not clean or the heating is uneven, it must be repaired according to faults. The problem with a Siemens commercial dishwasher that was previously repaired by Hong Kong Junhong Electrical Service Center was that it was not clean. Next, we will use this as a case study to introduce the repair of commercial dishwashers.

1. Why is the cleaning effect of commercial dishwashers poor?

The problem with a Siemens commercial dishwasher repaired by Hong Kong Junhong Electrical Appliance Repair Center was that the dishwashing effect was not ideal. For this, we need to follow the correct troubleshooting methods to troubleshoot step by step. Next, we will talk about the troubleshooting and repair steps in detail.

(1) When servicing a dishwasher, first check the nozzle. Commercial dishwashers like Siemens have a spray arm design, which uses a high-pressure water gun to clean the tableware. First, make sure that the nozzle is not clogged or damaged.

(2) After confirming that the nozzle is not clogged and has been cleaned, check the screening program. The screening program is a device that filters the water flow inside the dishwasher. Its operation is directly related to the water spraying effect of the high-pressure water gun. If it is used If no significant reduction in water spray pressure is found, it is not a problem with the screening program.

(3) When repairing a dishwasher, the detergent dispenser cannot be ignored. If the detergent is distributed unevenly or does not reach the expected amount, it will also lead to poor cleaning effect of the dishwasher, such as the Siemens commercial dishwasher being repaired. The detergent dispenser was clogged. Cleaning it completely solved the problem of insufficient detergent release.

2. What’s wrong with uneven heating in commercial dishwashers?

When we know how to solve the problem of poor cleaning effect of commercial dishwashers, let’s talk about the heating problems that are often encountered when repairing dishwashers. Many brands of dishwashers such as Guangmei Huayi have had heating problems, so they cannot To ensure the dishwashing effect, the specific troubleshooting process is as follows:

(1) The heating temperature of commercial dishwashers always does not reach the expected level. It is necessary to check whether the heating tube is aged or cracked. After cutting off the power, check its surface, and then use a multimeter to troubleshoot the circuit fault.

(2) The thermostat is also a point to pay attention to when repairing dishwashers. For example, many dishwashers often change settings, which causes the thermostat to malfunction. In this regard, you can use a multimeter to check the thermostat circuit board and gradually confirm that there is a problem. If there is no voltage or resistance abnormality, if the components are burned, you need to use a heat gun to replace the components. If the motherboard CPU is faulty, the motherboard must be replaced directly.

The above introduces how to solve the poor cleaning effect and heating problems that are often encountered when repairing dishwashers. If the heating problem is caused by a sudden power outage, you need to check whether the fuse is blown, because large appliances such as commercial dishwashers have Overheating protection is also something that should be paid attention to in daily maintenance of dishwashers.