The wide use of permanent magnet variable-speed screw compressors has greatly developed the vacuum equipment. In the process of using permanent magnet variable-speed screw compressors to generate vacuum, many sectors are always thinking about how to solve some problems and avoid later problems.
Key Takeaways
- So how to solve the fuel injection problem of the vacuum pump?reasonCompression screw seal breakdown:
- Excessive lubricant:
- Reverse connection of the motor:
Table of Contents
- So how to solve the fuel injection problem of the vacuum pump?reasonCompression screw seal breakdown:
- Excessive lubricant:
- Reverse connection of the motor:
- Lubricant quality problems:
- Pressure regulation problem:
- Control system problems:
- Remedy
So how to solve the fuel injection problem of the vacuum pump?
reason
- Compression screw seal breakdown:
If the compression screw seal of the screw compressor is faulty or worn, it may cause lubricant to enter the compression cavity, causing oil injection. It is the suction pipe or pumping container of the vacuum pump that is not sealed enough, and the suction piping system is suddenly exposed to the atmosphere. After the air contains a lot of water, it is sucked into the pump body, and the water seeps into the vacuum oil, causing the vacuum pump to spray oil.
- Excessive lubricant:
If excessive lubricant enters the compressor, it may cause oil spraying. This can be caused by a clogged lubricant filter, a malfunctioning lube oil system, or human error.
- Reverse connection of the motor:
When the user first uses it, due to the reverse connection of the motor, the motor of the rotary vane vacuum pump may be reversed, and the rotation direction of the vacuum pump rotor may be reversed.
- Lubricant quality problems:
Low quality or contaminated lubricants may cause oil spraying.
- Pressure regulation problem:
If the pressure regulator is faulty or improperly adjusted, it may cause the working pressure of the compressor to exceed the design range, causing oil injection.The adjustment parameters of the pressure regulator include working pressure range and stability, etc. If it is not set properly, it may cause the output pressure of the compressor to exceed the design range, causing oil injection. The remedy is to correctly adjust the parameters of the pressure regulator according to the requirements of the compressor to guarantee that the working pressure is stable within the specified range.
- Control system problems:
If the control system of the compressor fails or the parameters are set incorrectly, it may cause fuel injection.
Remedy
- Check that the place where the seal is not tight is well sealed. If a permanent magnet variable-speed screw compressor is used as a vacuum suction cup, it is recommended to mount a vacuum tank in the suction pipe of the vacuum pump, pump the vacuum tank to negative pressure, and then suck the suction cup through the negative pressure of the vacuum tank. Check and replace seals to guarantee good sealing output performance.
- Open the oil valve and drain excess oil.
- Just replace any two connection positions of the motor
- Determine the applicable lubricant specification: First, consult the instruction manual of the compressor or contact the manufacturer to determine the lubricant specification applicable to your compressor. This includes information such as the oil’s viscosity grade, output performance specifications and recommended change intervals. Check and clean the lubricant filter and make sure the lube oil system is working properly. The standard oil level should be based on the center of the sight glass. And regularly carry out oil testing and replacement.
- Check and adjust the pressure regulator to guarantee that the working pressure is within the normal range.
- Check the electrical connection and parameter settings of the control system to guarantee that the system operates normally.
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Frequently Asked Questions
What should I check first when a compressor will not start?
Confirm power supply, control settings, and emergency stop status, then check the pressure switch and any start protection devices.
Why does my compressor run hot?
Common causes are restricted airflow, low oil level, a blocked cooler, or high ambient temperature. Clean the cooler and verify lubrication first.
What does excessive oil consumption mean?
It usually indicates worn separator elements, overfilling, or a leak in the oil circuit. Inspect the separator and seals.
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