Refrigerated compressed air dryer maintenance

Refrigerant air dryer is a kind of compressed air dryer equipment. The refrigeration dryer adopts new technology. It belongs to the equipment in the pneumatic system.

(1) Observe and record the instrument value 4 times per shift

1. The pressure difference between the inlet and outlet of compressed air does not exceed 0.035Mpa;

2. Evaporation pressure gauge 0.4Mpa-0.5Mpa;

3. High pressure pressure gauge 1.2Mpa-1.6Mpa

(2) Regularly observe the drainage and sewage system

1. Clean the float drainer once a week or so

2. The sewage pipe discharges sewage once a week

Electronic drain cleaning method:

a. Close the ball valve in front of the automatic drainer;

b. Loosen the upper retaining nut. Take out the timing coil. During the cleaning process, the coil should never come into contact with water. Otherwise the coil will burn;

c. Unplug the hose. Unscrew the drain valve body. Empty the compressed air in the drain;

d. Remove the valve core and wipe it clean;

e. Screw the valve body back into place. The front ball valve opens slightly. Use compressed air to empty the impurities, water and oil in the drainage system. Clean the valve body with a rag;

f. Reinstall the valve core and timing coil in their original positions. Reinstall the hose and open the front ball valve.

(3) Always observe the inlet temperature of the cooling water system and the compressed air system

1. The cooling water temperature is 2~32℃;

2. Water pressure 0.15~0.3Mpa;

3. The intake air temperature of compressed air should generally be ≤45℃ (it is advisable to touch the intake pipe without being hot), except for special cases

4. The cooling water should be kept clean and the Y-type filter should be cleaned once every two weeks. If the water quality is good, once a month. The water condenser is cleaned once a year. The air condenser is cleaned once a month;

When cleaning the wind condenser, try to avoid bruising the fin surface of the wind condenser.

There should be enough space around the wind condenser for ventilation and heat dissipation. Do not work under direct sunlight. Periodically remove surface dust with compressed air.

Shell and tube water condenser cleaning: close the cooling water inlet and outlet. Open the end cap of the unconnected pipe. The outside of the end caps and gaskets need only be cleaned with water. The inside of the copper pipe is cleaned with gas, water or even a rag stick. When cleaning, be careful not to use too much force, so as not to break the internal copper tube.

(4) Regularly observe the refrigeration system

1. The compressor should be touched by hand at least once a day. Normally cold and frosty;

2. Touch the temperature difference between the two sides of the filter drier every week. The temperature difference should not be large.

3. If you find that the compressor has abnormal sound and heat, you should contact the after-sales service as soon as possible.

(5) Check the electrical control system: purge dust and fasten the terminals (must be carried out without electricity)

(6) Appearance maintenance

Regularly wipe the oil and dust on the surface of the refrigerated air dryer with a clean towel. Remove the dust and oil on the floor of the installation of the refrigerated dryer and air compressor. Keep the environment clean.