Vacuum Pump Maintenance Failure and Solutions

The stable performance of vacuum industrial production and indispensable equipment is related to production efficiency and personnel safety. During use, it is inevitable that there will be problems such as low vacuum, oil spraying, noise, etc. This article will give a detailed introduction to common vacuum pump maintenance solutions and introduce 15 common vacuum terms, such as vacuum, vacuum degree, vacuum pump limit pressure, etc. Bring you the most useful help. Solved vacuum pump failure problems.

Low ultimate vacuum and its elimination

• If the oil level is too low and the exhaust noise is loud, clean vacuum pump oil can be added.
• If the vacuum pump oil is contaminated by condensable vapor, it can be purified or replaced with new oil.
• There are leaks in the vacuum pump port external pipes, containers, test instrument pipes, joints, etc. When there is a large leak, there will be a loud exhaust sound and the exhaust port will exhaust. The leaking part should be found and eliminated.
• If the rubber seal of the intake nozzle or air ballast valve is improperly assembled, damaged or aged, it should be adjusted or replaced.
• If the oil hole of the oil inlet nozzle is blocked, the oil inlet nozzle can be pulled out to clear the oil hole.
• The vacuum system is seriously contaminated, including containers, pipes, etc. It should be cleaned.
• The coil spring is broken and should be replaced.
• If the rotor, pump body or pump cover is worn and the gap is too large, check, repair or replace it.
• If the pump temperature is too high, ventilation and cooling should be improved. If the temperature of the pumped gas is too high, it should be cooled before pumping in.

Oil injection

• If the oil level is too high, excess oil can be pumped in and out.
• The pump oil or debris in the demister should be cleared.

Vacuum oil leakage

The drain plug and oil tank gasket are damaged or improperly assembled, the screws are tightened; the oil mark is not tightened, and the plexiglass is deformed due to overheating. The connection gasket between the pump body parts and the bracket is not properly filled. The oil seal is improperly assembled or worn; it should be adjusted or replaced.

Vacuum unit noise

• The coil spring is broken and can be replaced.
• If there are burrs, dirt or deformations that hinder operation, it should be checked and cleaned.
• Bearing wear and parts wear. It should be repaired or replaced.
• If there is a problem with the motor, it should be checked.

Vacuum oil return

• The check valve is not closed properly. After the pump stops, the oil level will drop rapidly. It can be opened and stopped again to observe changes or disassembled for inspection.
• If the assembly is improper or worn, the internal oil seals of the two pump covers can be replaced.
• If the pump cover or pump body is uneven, it can be repaired.
• If the exhaust valve plate is damaged, it should be replaced.