Introduction to fault self inspection of runner dehumidifier

The faults of rotary dehumidifier can be divided into operation error, electrical control system fault, refrigeration system fault and ventilation system fault. Generally, the basic steps of troubleshooting are as follows: on the premise of eliminating false faults and ensuring correct operation, first analyze and eliminate the faults of the electronic control system, then check the faults of the refrigeration system and ventilation system, and then consider the faults related to each system.

Check the running status of the runner dehumidifier. For example, whether the component vibration is too large, whether the frost condensation of the low-pressure return pipe evaporator is uneven, and whether there are oil stains on the outer wall of the refrigeration pipe. If there is an oil mark, there is a leak at this time. Because Freon is easy to volatilize after leakage, the refrigeration oil is not easy to volatilize, so it remains on the pipe wall. This is also an effective method to check pipeline leakage. It also depends on whether the circuit is disconnected, whether the connector falls off, whether the fuse is blown, whether the surface of the heating part is burned and discolored, etc. This depends on the condition of each connector and fastener, and check for looseness, falling off, corrosion, etc. Especially for dehumidifiers that have been used or stopped for a long time, pay more attention to this aspect. While observing, we can further understand the running situation of the runner's dehumidifier by listening and touching. For example, if you listen carefully, you can judge which sound is running normally and which sound is running abnormally.

1. When the compressor is running, it shall only emit normal or even electromagnetic sound, and there shall be no "full pass" liquid impact sound or "click" metal sound. When the refrigerant in the capillary tube is normal, there should be only a "hissing" sound. When a good dehumidifier operates normally, there should be only slight wind and no other noise.

2. For example, when the blade is running, there shall be no friction sound, and there shall be no impact sound caused by vibration at all parts. These are two Zui common fault sounds.

3. When touching the relevant parts of the dehumidifier with your hand, you can judge whether the dehumidifier works normally by the temperature you feel. You can also touch the dehumidification casing by hand to feel whether it vibrates. For fan motor and compressor.

Refer to the operating instructions and operate the runner dehumidifier according to the operating procedures to avoid some wrong faults such as misoperation or non operation of the dehumidifier. Other false faults are caused by machine protection actions, such as power grid power failure, power supply air switch tripping, leakage protection action, the time specified by the timer is longer than the starting interval, and the ambient temperature is too low or too high. When the dehumidifier has a false fault, the high-speed use mode and protection device can be adjusted to eliminate the false fault.