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The pressure of the calibrator is unstable or cannot be pressurized normally
1. The oil tank is insufficient. 2. The pipe joints are damaged and leaking during transportation. 3. The "○" ring seal of the quick connector is damaged. 4. There is too much air in the system or it is not exhausted. Treatment method: 1. Loosen the oil tank cap or add oil to the oil tank. 2. Tighten the pipe joints. 3. Replace the "○" ring. 4. Repeatedly pump the oil filling pump to discharge the air in the system with the oil tank. Treatment method: The instrument should be judged according to the actual local atmospheric pressure. The air pressure cannot be pressed, and the pressure pump feels empty. Intelligent pressure calibrator fault 2. Negative pressure does not meet the standard Reason: 1. The reversing valve is not in place, resulting in air leakage. 2. The positive pressure check valve or the negative pressure check valve is not reset after movement, causing air pressure. Treatment method: 1. The reversing valve must be in place, and the reversing valve stem cannot be suspended in the air. 2. Check whether the positive and negative pressure check valve seat holes do not meet the requirements. 3. The spring is severely tilted and the one-way valve core cannot slide freely. (end) |
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