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the reason:
Fuel shortage in tank.
There is a leak in the piping joint at the time of transportation.
The quick connector "â—‹" ring seal is damaged.
There is more or less air in the system.
Treatment method: According to the actual local atmospheric pressure, it should be judged whether the instrument is normal pressure or not, and the pressure pump has a feeling of air pressure.
Release the fuel tank cap or refuel the tank.
Tighten the pipe fittings.
Replace the "O" ring.
Repeated priming of the oil pump causes the system air to drain out of the tank.
Intelligent pressure calibrator failure two - negative pressure can not reach the standard
the reason:
The reversing valve commutation is not in place and a leak occurs.
Positive pressure check valve or negative pressure check valve does not reset after movement, causing air pressure phenomenon.
The spring tilts badly and the one-way valve core does not slide freely.
Approach:
The reversing valve must be commutated into position and the reversing valve stem cannot be suspended in mid-air.
Check whether the positive pressure and negative pressure check valve seat holes have not reached the requirements.
Adjust the replacement spring.
Two Typical Faults of Intelligent Pressure Calibrator and Their Solutions
Intelligent pressure calibrator failure one - pressure instability or not normal pressure