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What is the reason why the vacuum pump can’t pump air?

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Excuse me, there is no vacuum for 15 minutes during vacuum. What is the reason.

the possible reasons are as follows:

1. The vacuum pump is worn or damaged and cannot reach the vacuum degree

2. Loose gas pipe connector, broken pipe, damaged vacuum chamber sealing ring, damaged solenoid valve, etc., resulting in the atmosphere channeling into the vacuum chamber

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3. The vacuum pump oil is insufficient

4. Insufficient air extraction time

II. The vacuum chamber of the vacuum packaging machine cannot be opened for the following reasons:

1. For fully automatic equipment, such as the electric cover opening model of the rolling vacuum packaging machine, the cover opening motor may be damaged and the pull rod may be stuck

2. The bleeder solenoid valve fails to open after the working cycle

III. the vacuum pump of the vacuum packaging machine does not operate. The possible reasons are as follows:

1. If it is the relay control panel, the vacuum pump time relay may be damaged; If the computer version is controlled, the computer version is faulty. Please replace it

2. The vacuum pump motor is damaged. Generally, the manufacturer will provide warranty (of course, it is a regular manufacturer) and replace or repair it

3. If the travel switch is not pressed, please close the machine cover. You can adjust the travel switch by adjusting the screw position or adjusting the pressure bar. For electric cover opening models, please adjust the pull rod

IV. abnormal noise during operation, tripping, black smoke and oil dripping from the exhaust port. The reasons are as follows:

one of the reasons for the fault is that the air inlet is blocked and there is foreign matter in the pump

the second reason for the fault is that the motor fan of the pump makes abnormal noise and needs to be repaired

the third reason for the failure is that the pump is overheated due to long-term operation, or it is caused by operation at high temperature. Please keep the machine ventilated and radiating

the fourth reason for the fault is that the vacuum pump oil is insufficient or the use of non-standard engine oil

the fifth cause of failure is the aging of vacuum pump motor and vacuum pump solenoid valve due to long-term use, resulting in the decline of insulation performance, etc. Please replace the accessories or contact the manufacturer.

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