Troubleshooting of RO RO RO purified water equipment

The switch is on, but the device does not start.

① Electrical circuit fault, such as broken fuse, wire falling off

② The thermal protection element is not reset after protection

③ Waterway undervoltage, check insurance, check wiring

② Thermal protection element reset

③ Check the water circuit and ensure the water supply pressure

After the equipment is started, the inlet solenoid valve is not opened.

① The wiring falls off

② Internal mechanical failure of solenoid valve

③ Solenoid valve coil is broken

① Check the line

② Remove the solenoid valve for maintenance

③ Repair or replace the coil

The pump operates, but the rated pressure and flow cannot be reached.

① Pump reverse

② The cartridge of the security filter is dirty

③ There is air in the pump

④ Flushing solenoid valve open

① Rewire

② Clean or replace the filter element

③ Remove the air in the pump

④ Adjust the pressure after flushing

When the system pressure rises, the pump noise is loud.

① Insufficient raw water flow

② Unstable raw water flow

③ Check raw water pump and pipeline

④ Check the raw water pump and pipeline, and check whether there is leakage in the pipeline

The solenoid valve is not closed after flushing.

① Solenoid valve control element and circuit fault

② Solenoid valve mechanical failure

③ Check or replace components and circuits

④ Remove, repair or replace the solenoid valve

Under voltage shutdown.

① Insufficient raw water supply

② Filter element of security filter is blocked

③ Improper pressure adjustment

Undervoltage is caused during automatic flushing.

① Check whether the raw water pump and pre-treatment system are working

② Clean and replace the filter element

③ Adjust the system pressure to the best state to maintain the filtered pressure above 20psi

The concentrated water pressure cannot reach the rated value.

① Pipeline leakage

② The flushing solenoid valve is not fully closed

③ Recovery system leakage

① Check and repair the pipeline

② Check and replace the flushing solenoid valve

③ Check and repair the recovery system

The pressure is sufficient, but the pressure display is not in place.

① Foreign matters in the pressure gauge hose are blocked

② There is air in the hose

③ Pressure gauge fault

① Check and dredge the pipeline

② Remove air

③ Replace the pressure gauge

The water quality becomes worse.

① Membrane pollution and scaling

② Aging and failure of membrane joint seal

① Conduct chemical cleaning according to technical requirements

② Replace O-ring

③ Replace membrane

Production declined.

① Membrane fouling and scaling, chemical cleaning shall be carried out according to technical requirements

② The water temperature change shall be recalculated according to the actual water temperature to determine the water yield.