Zuankex Home Water Purifier RO Membrane Reverse Osmosis Water Filter 75G Pure Water Machine Replacement Cartridge

ULP low-pressure membrane ensures high water flow and desalination rate under low pressure

Dry membrane preservation technology for convenient transportation and elimination of protective liquid odor

Correct installation is critical; incorrect installation results in no filtration effect

Membrane housing water inlet connects to 4042 joint

RO membrane water outlet tube and large sealing ring face outward

Blue membrane layer must not be removed during use

Membrane housing label should not be removed

Double sealing rings face inward

Membrane housing drain outlet connects to 4042 joint

Purified water outlet connects to check valve

1. Use wrench to unscrew bottle cap

2. Open and access RO membrane

3. Rotate and remove RO membrane

4. Unpack new RO membrane

5. Insert double sealing ring with one end facing inward

6. Insert membrane and screw cap to complete installation

Proper removal requires rotating the hollow tube to release pressure before pulling out to avoid damage

1. Before installing new membrane, flush pre-filters to ensure no carbon powder enters RO membrane

2. Low water output after membrane replacement may indicate membrane perforation; test by closing pressure tank and observing flow

3. TDS value not decreasing after one week may be due to membrane housing compatibility or damaged sealing rings; replace accordingly

4. Unstable TDS values may be caused by temperature-induced sealing ring deformation; soak sealing rings in hot water (~3 minutes) to restore

5. No purified water but wastewater present may be due to insufficient pre-membrane pressure or clogged valves/filters

6. Continuous wastewater after replacement may be caused by pressure changes affecting check valve; replace check valve

7. Membrane lifespan depends on water quality, pressure, usage, and maintenance; regular replacement and quality pre-filters recommended

8. Shorter membrane lifespan compared to previous models may be due to clogged drain outlet or malfunctioning wastewater valve; inspect and replace as needed