Process:

sand filter + carbon filter + PP sediment filter + booster pump for 1st stage RO + 1st stage RO + booster pump for 2nd stage RO + 2nd stage RO

Specifications:

Filtration capacity: 300 litres/hour, 25 deg.c
Input power: 2.75KW
RO membrane: ESPA4040  2PCS (2 stages)
Multi-stage pump: CDL2-180/2.2KW  1PC
Pre-filter (sand filter): (diameter)300 x (length)1,200MM  2PCS
PP sediment filter: (diameter)200 x (length)5000MM 1PC
Booster pump: BLC70/0.55KW  1PC
Quartz sand: 90KG
Active carbon: 43KG 
Dimensions: main body 560x560x1,500MM
                         pre-filter 1,650x360x1,800MM

Functions:

1) Automatically and manually wash RO membrane.
2) Manually wash RO memebrane with chemicals on machine.
3) Machine automatically stops when high water level of purified water, and runs when low level.
4) Multi-stage pumps protect the machine when lack of water.
5) Protection in such cases as no power, lower pressure, higher pressure, shot circuit, creepage, etc.
6) Large eletric current, creepage protect and so on.