Cách sửa chữa máy sấy khí khi gặp sự cố
This article will provide you with a lot of useful information on how to repair an air dryer that you may not know
Air dryer is an important device in the air compressor system, air dryer helps to dry and clean compressed air. Compressed air in the formation process often contains many impurities and water, so it needs to go through the air dryer system before it is put into the ducts. It can be said that the air dryer plays an important role in the air compressor system. The failure of the air dryer will cause the compressed air to contain a lot of water vapor, which will affect the quality of the product, so today I would like to show you how to repair the air dryer with the following basic errors:
REPAIRING THE AIR DRYER WITH THE PROBLEM OF WATER NOT SEPARATING IN THE PNEUMATIC AIR
Failure to separate water will result in the following air dryer conditions:
1.Pipe layout is not suitable
Causes and remedies for the above situation include:
– The bypass valve is not closed completely: repair by checking the bypass valve again
– Compressed air cannot pass through the air dryer: repair by opening all the air inlet and outlet valves of the air dryer
– Air dryer not placed on a flat surface: repair by placing the machine on a flat surface
– Tilt automatic drain valve: repair by re-aligning the position of the drain valve.
– The drain pipe is higher than the drain valve: repair by re-designing and reinstalling the drain pipe.
2. Compressed air volume generated by the air compressor is too large
– The amount of air produced by the air compressor is larger than the air dryer can be dried, so it is necessary to correct this error by redesigning the compressed air system by replacing the air dryer with a larger capacity or buy additional air dryers.
3. Drainage system is not normal
Causes and solutions to repair air dryers with the above situation include:
– Drain valve is not good or damaged: repair by cleaning or replacing.
– The front of the drain valve is not fully open: fix it by making sure the drain valve is fully open
4. The evaporator temperature gauge is not normal
Causes and solutions to repair air dryers with the above situation include:
– Dew point temperature too high: fix by adjusting the hot gas damper.
– Ambient temperature or inlet air temperature is too low: fix by turning off the machine when the ambient temperature drops below 2 degrees Celsius
– The air is dirty or the ventilation system is not good: Repair by choosing an appropriate installation location of the air dryer or improving the ventilation of the room with the compressor + air dryer.
– Refrigeration gas leaks, so the cooling performance is not good: repair by fixing the leak and fully pumping refrigerant.
REPAIRING THE AIR DRYER WITH THE PROBLEM THAT DOESN'T WORK THE AIR DRYER
The failure of the air dryer will result in the following conditions:
1. Power has not been supplied to the air dryer
Causes and solutions to repair air dryers with the above situation include:
– The fuse is broken or the aptomat is broken: repair by checking if the source is short-circuited, out of phase, grounded and checking if the aptomat is damaged.
– Broken power supply cord: repair by finding and fixing the break.
2. Repairing an air dryer that cannot operate when the power is on
Causes and solutions to repair air dryers with the above situation include:
– The voltage supplied to the air dryer is too high or too low: fix it by making sure the power supply to the air dryer is +/-10% compared to the voltage specified on the air dryer label.
– Damaged contacts: repair by cleaning or replacing contacts.
– Contactor broken: repair by replacing new.
– Damaged temperature relay: repair by replacing.
– Rowle pressure failure: repair by replacing.
– Damaged gas compressor: repair by replacing.
3. Repair the air dryer when the contacts are normal but the machine still won't start
Causes and solutions to repair air dryers with the above situation include:
– Pressure relays or thermal relays operate: Repair by finding the cause of these relays to operate, then press the Reset button
– Compressor head open circuit: repair by replacing.
– Loose electrical connections: check and fix
4. Repair the air dryer with the problem that the machine is not working properly
The failure of the air dryer will result in the following conditions
a. Voltage is not normal
After starting the air dryer for a while, the machine is short-circuited and smells: repair by checking if the circuit is abnormal, the connections are tight
b. After pressing the reset button but the air dryer still does not work
Causes and solutions to repair air dryers with the above situation include:
– The pressure relay is broken and the cooling fan stops: repair by replacing it
– The air dryer is overloaded and disconnected: need to check the relay again
– The heatsink is too dirty and clogged: fix it by cleaning the heatsink
