Connect the inlet and outlet oil circuit, connect the power supply, connect the safety ground wire, check whether the circuits are connected reliably, turn off the vent valve and the oil inlet valve. First start the vacuum button to observe whether the pointer of the vacuum meter is moving or not. If you do not move, the power cord needs to be replaced. When the vacuum is expressed to the negative pressure 0.06Mpa, the oil inlet valve is opened and the oil is opened. When the oil reaches the oil level tube 1/4, the oil discharge button starts to start. If the oil level rises continuously, it is noted that the filter oil can not be sucked into the vacuum pump to avoid the vacuum, then open the vent valve to keep the vacuum between 0.06 to 0.08, and then start adding. The heat button. During heating, according to the vacuum degree and the water saturation curve, the temperature to be heated is set to heat the oil. Before shutting down the oil heater, turn off the heating button first, wait for the oil to circulate for a few minutes, then turn off the vacuum and oil drain button, otherwise the heating tube will be affected.
Service life. At work, if the pressure gauge reading is more than 0.3Mpa, it indicates that there are more impurities on the filter core, so it is necessary to shut down and clean the filter element. After the work is completed, the vent valve is opened, so that the vacuum degree is zero, otherwise, the service life of the vacuum pump will be affected.
Common fault and troubleshooting method:
Vacuum degree is not up to technical requirements
1. the filtered oil contains much water and the vacuum pump pumps out gas.
2. due to the different altitude of the place of use, the change of vacuum degree is not influenced by standard atmospheric pressure.
3. the vacuum oil level is lower than the oil level line in the vacuum pump
4. vacuum oil has more water content for longer time
5 sealed air leakage at each connection
6. vacuum pump vulnerable parts wear
The 1. genera are normal and need to be filtered many times
2. is a normal phenomenon to raise the temperature of oil so that water can evaporate.
3. increase vacuum oil
4. need to replace the new oil
5. inspection and maintenance
6. replacement of vulnerable parts
Under normal working conditions, pressure is greater than 0.3Mpa
1. the outlet of the machine is too long, the oil level is too high, the outlet valve is small or the tube is too small.
2. filter core sucked too much impurity
1. change the working environment
2. replacement filter core
Vacuum pump injection
1. the filtered oil has more water, and the oil is sucked into the vacuum pump
2. the displacement or damage of the inner sealing cushion in the vacuum pump
1. replacement of vacuum oil must not exceed the oil level line
Temperature control is ineffective or temperature free
1. temperature control and thermometer do not match
2. heater burned or line broken or contactor not activated.
1. adjust temperature control
2. replacement heater for repair line
No pressure out of oil discharge pump
1. initial filter block
Oil seal leakage of
2. row oil pump
3. intake tubing suction cylinder bottom
4. the inlet of the oil pipe is too thin or too far away
Small hole plugging in
5. vacuum tank
1. cleaning filter net
2. adjust oil seal cover like ineffective replacement of oil seal
3. clean up
4. improve the environment
5. disassembly and washing
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