Interpretation of common error solutions for pressure controllers-

Common pressure controller faults, causes and troubleshooting methods are as follows:

1. There is an air leak between the upper and lower housings, and air bubbles are generated after being covered with washing powder. Upper and lower hull castings are defective; the sealing ring between the upper and lower shells is damaged or the fastening bolts are loose; the tympanic membrane of the valve ages, so that air escapes from the adjustment screw. Clean the hull surface and repair the defect with a metal repair agent; replace sealing ring or tighten bolt; replace the valve drum.

2. The air pressure is less than 0.65MPa and continues to decline, but the gas is still vented from the vent hole of the pressure regulator D. The valve tympanic membrane, tympanic membrane spring or deflation valve are enddamaged and seal fails; vent hole C is clogged; the deflation check valve is leaking; deflation check valve spring loses and fails; Check the tightness of the valve tympanic membrane, tympanic membrane spring or deflation valve, if damaged, replace the new one to clear the vent hole C; replace the deflation check valve; replace deflation check valve spring; replace the leather cup.

3. When the air pressure is less than 0.65Mpa, the adjustment screw is too loose, the valve tympanic membrane has low deflation pressure, and the deflation valve ages and leaks . Tighten the adjusting screw a little; replace the purge valve.

4. Air pressure is normal, but air continues to leak from vent hole D or D on the pressure controller. The tympanic membrane of the valve is in contact with the valve ofdeflation and the fit is not tight, forming a gap and causing air leakage; the tympanic membrane spring is damaged or invalid and cannot compress the tympanic membrane of the valve. Check the tightness of the tympanic membrane of the valve and the deflation valve, and replace it with a new one if it is damaged; replace the tympanic membrane spring.

5. After the air compressor stops pumping air, the vent port D or C will not vent, but the air pressure drops rapidly. Intake check valve is aging, damaged, and gasket is not sealing and leaking; the inlet check valve spring is damaged and fails. Check the intake check valve and its sealing condition, and replace it with a new one if damaged; replace the inlet check valve spring.

6. When the air pressure is more than 0.70Mpa, the screw ofsetting is too tight, the tympanic membrane spring compression is too high, and the valve tympanic membrane deflation pressure is too high . Unscrew the adjustment screw a little to reduce the compression of the tympanic spring.

7. The air pressure is over 0.70MPa and continues to rise, but the air does not release from the vent hole D or C. The tympanic membrane spring is stuck; the air hole on the vent valve is blocked; vent stops Check valve spring is stuck; the valve stem is stuck. Replace the tympanic membrane spring; dredge the air hole on the deflation valve; replace deflation check valve spring; reface or replace the valve stem. When servicing the pressure regulator, be sure to keep the seals, gaskets, and air inlet and outlet of the pressure regulator clean to prevent dirt and impurities from entering.er and cause a blockage of the pipe or a poor seal. Its internal rubber valve and rubber material are replaced to prevent premature aging of rubber parts and affect safety. After maintenance, the working performance of the pressure controller should be checked and calibrated with a pressure gauge, and it can only be used after the adjustment is qualified.

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