How often should the vacuum oil in the HUMGINE vacuum drying box be replaced? The general recommendation is to change it once every three months, depending on usage frequency and conditions.
The drying chamber is a sealed space connected to a vacuum pump and pressure sensor via a vacuum line. The vacuum pump continuously removes air and gas from the working chamber, causing the internal pressure to drop below atmospheric levels. To maintain the desired vacuum level, air is introduced through an intake valve to balance the pumping action. A manual control valve is located at the front stage of the pump, allowing users to adjust the pumping speed as needed. Additionally, the vacuum pump features a gas ballast valve, which should be opened when pumping vapors or moisture to prevent contamination and damage.
If a water container is placed inside the drying chamber, the vacuum pump will gradually reduce the pressure, lowering the boiling point of the water. This causes the water to start evaporating into vapor, which is then drawn out by the vacuum pump. To manage this process effectively, the drying box includes a condenser installed before the vacuum pump. As the water vapor passes through the condenser, some of it condenses back into liquid water, while the remaining vapor is removed by the pump.
Over time, if excessive moisture is pumped into the system, the vacuum pump oil can become contaminated or degraded within about 30 days. It’s important to monitor the oil condition and replace it when necessary to ensure optimal performance and prolong the life of the equipment. Regular maintenance not only improves efficiency but also helps avoid potential malfunctions or damage caused by moisture buildup.
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