The Vacuum Degasser is the most critical maintenance item in a degassing system. For oil sealed rotary vane vacuum pumps the most critical maintenance item is to change the pump oil frequently. The frequency will depend on the application and usage but it is recommend that if the oil ever turns cloudy, dark or is foul smelling, change it immediately. Any degassed solvents, water or other liquids will condense in the pump oil and lower the vacuum level the pump is able to achieve. Frequent oil changes will also extend the life of the vacuum pump.
When changing pump oil it is recommended to also use a flushing fluid to cleanse the pump. LACO’s LVOFF is a hydrocarbon fluid specifically designed to assist in the internal cleaning of particles and sludge build-up in mechanical vacuum pumps. Its low viscosity helps free contamination from internal parts allowing it to be flushed from the pump through the drain valve.
LACO USER MANUAL – VACUUM DEGASSING CHAMBERS AND SYSTEMS
FLUSHING PROCEDURE
Drain the used fluid from the pump while still hot from operation and refill with LVOFF. Run the pump blanked off or isolated for approximately 20-30 minutes or until pump is hot.
Drain the pump completely (open gas ballast and jog the pump to aid in removing oil). Repeat the procedure if necessary then refill with LACO 19 grade oil for direct drive pumps of 195 grade for belt drive pumps or other oil as specified.
WARNING：Any foreign material left remaining in the vacuum chamber or vacuum hose lines can contribute to outgassing and reduce the performance of the system and the vacuum degassing systems.
