Common Troubleshooting And Maintenance Methods Of Vacuum Packaging Machine

The vacuum packaging machine can automatically extract the air in the packaging bag and complete the sealing process after reaching a predetermined vacuum degree. It can also be filled with nitrogen or other mixed gases, and then complete the sealing process. Vacuum packaging machines are often used in the food industry, because after vacuum packaging, the food can resist oxidation, so as to achieve the purpose of long-term storage.
Trouble phenomenon: vacuum pump does not work or has severe noise
The reasons are as follows:
1. The power supply lacks phase or the fuse is open
2. The vacuum pump is reversed
3. Poor contact of IC main contact point
4. ISJ normally closed contact is bad
Processing method:
1. Check the power inlet or change the fuse
2. Power commutation
3. Adjust or replace the contactor
4. Adjust or replace the contactor
Trouble phenomenon: The vacuum pump does not stop for overtime, ISJ does not work, overhaul or renew, and the specified ultimate vacuum is not reached
The reasons are as follows:
1. The vacuum pump oil is too little or contaminated
2. Smoke or air leakage from the vacuum pump
3. The air circuit is not tightly closed
4. The 2DT iron core is stuck and does not reset
Processing method:
1. Refuel or change oil
2. Clean the vacuum pump, replace the exhaust filter, check the check valve
3. Check the gas circuit to eliminate leakage
4. Overhaul or cleaning
Trouble phenomenon: inexhaustible or no vacuum
The reasons are as follows:
1. Air leakage in the packaging bag
2. There is no vacuum in the heat-sealed air chamber during vacuum
3. The sealing gasket on the 1DT iron core or the sealing ring in the magnetic cover leaks
Processing method:
1. Renew the packaging bag
2. 1DT does not work, troubleshooting is excluded
3 Overhaul or renew
Trouble phenomenon: no heat seal
The reasons are as follows:
1. Burn off the nickel chromium skin
2. The heat-sealed loop line is loose or disconnected
3. Poor contact of 2C main contact
4. 2C does not work
Processing method:
1. Renew
2. Tighten and reconnect
3. Adjust or replace the contactor
4. Check whether the 1SJ normally open and 2SJ normally closed contacts are in good condition. If they are burned out, replace the contactor
Trouble phenomenon: insufficient sealing strength
The reasons are as follows:
1. The temperature time adjustment is too low and too short
2. The vacuum time adjustment is too short
3. The heat-sealed air chamber is ruptured
Processing method:
1. Readjust
2. Readjust to make it ≤-0.08Mpa
3. Renew
Trouble phenomenon: the sealing surface is uneven or eroded
The reasons are as follows:
1. The temperature time adjustment is too high and too long
2. 2SJ does not work
Processing method:
1. Readjust
2. Overhaul or renew (If the heat sealing delay is too long, the power should be cut off in time)
Trouble phenomenon: no air return after heat sealing
The reasons are as follows:
1, 2SJ normally open poor contact
2. 2DT does not work
Processing method:
1. Adjust or replace the contactor
2. Overhaul or troubleshoot