Water Circulating Vacuum Pump This machine is used to provide vacuum condition for the process of evaporation, distillation, crystallization, drying, sublimation, filtration, decompression, degassing and so on, particularly be suitable for labs and small scale test of industries such as universities and colleges, scientific research institutes, chemical industry, pharmacy, biochemistry, foodstuff, pesticide, agricultural engineering, biological engineering. Product parameters: Voltage:110V Power:180W Lift:26ft (8m) Flow Rate:60L/min Max Vacuum:0.098Mpa Air Drawing Rate:10L/min Capacity of Water Tank:15L Size:15.35'' x 11.22'' x 17.72'' Net weight:18 lb (8kg) Operation Steps: 1. On first use, open the upper cover of the water tank and inject cold water till the water level reaches the height of the upper water outlet. 2. Link tightly the tube to the sucking tap. Then put through the power and the pump begins to work. 3. If the machine need to work for a long time, the temperature of the tank water will rise effecting the vacuum degree. At this time, connect the drain hose with tap water and drain water from the water outlet. You need to control the amount of the tap water so as to keep the temperature of the constant and the vacuum degree stable. Item Number(170436): 1 x Water Circulating Pump You can make order with no worry. Any concern just feel free to let us know, we'll reply in 24 hours in normal condition. Handling Time: Shipping is usually made in 1-3 business days after payments cleared. Orders are processed from Monday-Friday; Not on the weekends & public holidays. Warranty: 6 months' warranty for the machines, not for the consumables. We stand behind our products all the item, so even if your warranty period has expired, you can still seek for service or technical support from us with low cost.