(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. The floating ball drain should be cleaned once a week or so;

2. The sewage pipe is discharged once a week.

◆Electronic drainer cleaning method:

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

b. Loosen the upper fixing nut and take out the timing coil. During the cleaning process, the coil can never touch the water, otherwise the coil will burn;

c. Remove the hose, loosen the drain valve body, and empty the compressed air in the drain;

d. Remove the valve core and wipe it clean;

e. Screw the valve body back to its original position, open the front-end ball valve slightly, and use compressed air to empty the impurities, water and oil in the drainage system; wipe the valve body with a rag;

f. Put the valve core and timing coil back in their original positions; then install 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 0.15~0.5Mpa;

3. The intake temperature of the ordinary type of compressed air should generally be ≤50℃, and the intake temperature of the high temperature type should generally be ≤80℃ (it is advisable to touch the intake pipe without being hot), except for special ones.

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

◆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, and it cannot work under direct sunlight; regularly use compressed air to remove dust on the surface, and the flow and pressure of the compressed air used for cleaning should not be too large.

◆Cleaning of shell and tube water condenser: close the cooling water inlet and outlet, open the end cover that is not connected to the water pipe, the outside of the end cover and the gasket only need to be cleaned with water; the inside of the copper pipe is cleaned with gas, water or a stick connected with a rag; 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 it is cold and dew condensation;

2. Touch the temperature difference between the two sides of the filter drier every week, and the temperature difference should not be very large (the inlet is hot and the outlet is cold, it needs to be replaced);

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

(5) Check the electrical control system: blow off the dust and fasten the terminals (must be done without electricity)

(6) Appearance maintenance: regularly wipe the oil and dust on the surface of the equipment with a clean towel. Remove the dust and oil on the floor of the installation of air dryers and air compressors, and keep the environment clean and tidy.