1. Checks during vacuum pump operation: Use the pressure gauge on the oil mist separator to check for blockages; if the reading falls within the red zone, the separator is clogged and must be replaced. If the unit lacks a pressure gauge, monitor the drive motor current to assess the separator's resistance; an increase in motor current or a drop in vacuum pump flow rate indicates a clogged separator, requiring replacement.
2. If the pressure indicated by the vacuum pump oil mist separator's pressure gauge is lower than usual, or if the drive motor consumes less current than normal, it indicates that an oil mist separator is damaged and requires replacement.
3. If the exhaust gas contains oil, the cause is a clogged or damaged oil mist separator, which must be replaced. Oil mist separators cannot be effectively cleaned; replace any that are clogged. Before replacement, turn off the vacuum pump and disconnect the power supply. Ensure the pump has returned to atmospheric pressure, then remove the exhaust port cover from the oil tank. Using a specialized hex key, remove the exhaust filter and install the new oil mist separator—complete with its sealing ring—by positioning its open end correctly within the oil tank.
https://www.btlasfilters.com/showproducts/productid/6320572/cid/594761/dvp-1801046filter-replacement/
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