The Vacuum Saturation Test Device consists of a vacuum pump, a shaking device, a vacuum pressure valve, a vacuum pressure gauge, a time relay, soil containers, and switch controls.

• Cleaning: After each use, clean the surface and check bolts, terminals, and belt tension.
• Seals: Inspect O-rings and shaft seals; replace promptly if hardened or cracked.
• Monthly: Clean the inlet filter; check lubrication oil levels for oil-lubricated models.
• Quarterly: Test oil viscosity and clean the cooling system (descale water-cooled or dust air-cooled units).
• Annual: Complete oil change, motor insulation testing, and bearing inspection.

Ensure vacuum and water injection valves are closed before use. Open the vacuum valve slowly after starting the pump to avoid oil spraying.

Regularly calibrate pressure sensors. Before long-term shutdown, drain all residual moisture to prevent internal corrosion.