Sewage electromagnetic flow controller controller FAQ
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The common faults and elimination methods of sewage electromagnetic flow controllers are listed as follows:
1 Air pressure is normal, but air constantly leaks from the pressure controller vent D or D. The tympanic membrane of the valve is in close contact with the deflation valve and is not tightly attached, forming a gap and leaking; the tympanic membrane spring is damaged and fails, and the tympanic membrane of the valve cannot be compressed. Check valve tympanic and deflated valve seals and replace if damaged; replace tympanic membrane spring.
2 After the air compressor stops pumping, the bleed holes D or C do not deflate, but the air pressure drops quickly. The inlet check valve is worn out, damaged, and leaks airtightly; the intake check valve spring is damaged and fails. Check the inlet check valve and its sealing condition. If it is damaged, replace it with a new one; replace the inlet check valve spring.
3 When the air pressure is higher than 0.70Mpa, the adjustment screw is too tight, the compression of the tympanic membrane spring is too high, and the valve tympanic membrane deflation pressure is too high. The electromagnetic flowmeter twists the adjustment screw a little to reduce the compression of the tympanic membrane spring.
4 The air pressure is higher than 0.70Mpa, and keeps rising, but the air is not stuck in the tympanic membrane spring from the bleed hole D or C; the air hole in the deflation valve is blocked; the deflation check valve spring is stuck; the valve stem Was stuck. Replace the tympanic membrane spring; clear the air hole on the air release valve; replace the deflation check valve spring; trim or replace the stem.
5 Air leaks between the upper and lower shells, bubbles are generated after smearing with detergent powder. The upper and lower shell castings have defects; the seal ring between the upper and lower shells is damaged or the fastening bolts are loose; the tympanic membrane of the valve is aged, and air leaks from the adjustment screw. Wipe the surface of the shell, repair defects with metal repair agent; replace the seal ring or tighten the bolt; replace the valve tympanic membrane.
6 The air pressure is less than 0.65Mpa and decreases continuously, but the gas is always discharged from the pressure controller vent hole D. The valve tympanic membrane, tympanic membrane spring, or deflated valve is damaged and the seal fails; the bleed hole C is blocked; the deflation check valve leaks; the deflation check valve spring loses and fails; the cuff is aging and leaks. Check the sealing of valve tympanic membrane, tympanic membrane spring or deflated valve. If it is damaged, replace it with a new one to clear the bleed hole C; replace the deflation check valve; replace the deflation check valve spring; replace the cup.
7 When the air pressure is less than 0.65Mpa, the adjustment screw is too loose, the tympanic membrane deflate pressure is low, and the air release valve is aged and leaks. The electromagnetic flowmeter screwed the adjustment screw a little; replace the air release valve.
Sewage electromagnetic flowmeter