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How to maintain haoen 600 double chamber vacuum packaging machine?

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Hello, the maintenance of the packaging machine is divided into the following points:
you must be familiar with the adjustment and use methods before operation
2. Maintain and refuel the vacuum pump regularly according to the instructions of the vacuum pump, and pay strict attention not to reverse (380V) to avoid damage to the pump
3. Frequently check whether there are foreign matters on the sealing lacquer cloth (polytetrafluoroethylene) of the upper hot pressing frame and whether it is flat to ensure the sealing strength
4. Always check whether the grounding wire of the machine is in good contact to ensure safe use of electricity
5. Before packaging, select the heat sealing temperature and time, from low to high, from less to more; To avoid burning the lacquer cloth, rubber board or silicone rubber strip; If the lacquer cloth is damaged, it must be replaced in time
6. In case of failure, turn off the power supply in time. If necessary, press the emergency stop switch. After venting, lift the studio, and then turn off the power supply to check the cause and eliminate the failure
common faults and troubleshooting
1 Vacuum system fault
a. the vacuum pump motor is reversed (380V). Check whether the rotation direction of the vacuum pump is consistent with the head on the motor. If not, adjust the phase
B. the vacuum pump cannot be vacuumized, the travel switch is not in place or the circuit board is damaged, so that the vacuum pump cannot be
started; Adjust the position of travel switch iron or replace the circuit board
C. the vacuum chamber cannot reach the limit vacuum, the vacuum pumping time is not enough, the pipe leaks, the air bag leaks, and the sealing ring of the vacuum chamber is damaged or scratched
D. the vacuum chamber cannot be opened and the working chamber cannot be introduced into the atmosphere; The vent valve yv2 is not opened, the circuit board is faulty or the circuit is loose
e. the vacuum degree of the vacuum chamber is normal, but there is always residual gas in the bag, the heat sealing mechanism is not reset well, the bag mouth is pressed to death, so that the air cannot be extracted, the heat sealing solenoid valve yv1 is not opened, or the vacuum pump fails (see its manual for details)
2. Poor sealing quality
A. check whether the sealing part of the packaging bag is clean and avoid contamination at the sealing part
B. check whether the nickel ribbon (electric heating wire) works normally and whether there is short circuit or open circuit
C. whether the heat sealing temperature and time are properly selected
D. check the air bag of the hot pressing chamber of the upper hot pressing frame for leakage
E. check whether the heat sealing solenoid valve yv1 works normally
3. Bag burst during vacuum pumping
the hot seal is not reset well, the space at the bag mouth is too small, and the air is too late to be discharged, resulting in pressure in the bag
4. No automatic venting
the vent valve yv2 is open and cannot be opened or the circuit board is damaged
5. The emergency stop button or circuit board cannot be damaged

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