Common troubleshooting solutions for laboratory water purifiers

Laboratory pure water machineCommon faults and solutions for water purifiers

1、 The high-pressure pump of the laboratory pure water machine does not start, unable to produce water

Check if there is a power outage and if the plug is properly inserted

Check if the low-voltage switch is malfunctioning and unable to connect the power supply

Check if the high-voltage switch or water level controller is malfunctioning and cannot be reset

Check if the transformer and fuse are burnt out

2、 The high-pressure pump of the laboratory pure water machine is working normally but cannot produce water

High pressure pump loses pressure

Pre filter clogged (no pure water or wastewater or small wastewater)

Check valve blockage (with wastewater, no pure water)

The solenoid valve is malfunctioning and cannot be effectively opened.

Is the RO membrane clogged

3、 The high-pressure pump of the laboratory pure water machine does not stop

The pressure of the high-pressure pump is insufficient and cannot reach the set pressure

The check valve is blocked and cannot produce pure water (there is wastewater but no pure water)

High voltage switch malfunction, unable to trip

The solenoid valve is malfunctioning and cannot be effectively opened

4、 The high-pressure pump stops, but the wastewater does not stop

Electromagnetic valve malfunction, unable to effectively cut off water supply

(Inspection method: Close the pressure drum ball valve. If there is still wastewater, it can be concluded that the solenoid valve is malfunctioning.)

There is another situation where the inlet solenoid valve is closed and then opened. If the machine is normal, it is determined that the water pressure is too high, causing the solenoid valve to not close flexibly. Therefore, it is considered to adjust the inlet manifold to reduce the water pressure

Pressure relief of check valve (with minimal wastewater) (Inspection method: Close the inlet solenoid valve. If there is still wastewater, it can be concluded that the check valve is releasing pressure)

5、 The laboratory pure water machine repeatedly jumps after being filled with water

Insufficient pressure of raw water

Check valve pressure relief

High voltage switch malfunction

There is a pressure relief phenomenon in the system

VILaboratory pure water machineThe pressure tank is full of water, but pure water cannot flow out

Pressure bucket pressure relief

Post activated carbon blockage

Is the pressure drum ball valve damaged

7、 Insufficient pure water flow rate of laboratory pure water machine

Pre filter clogged

Insufficient pressure of high-pressure pump

RO membrane blockage

The wastewater ratio is imbalanced or the flushing switch is not tightly closed

8、 The ratio of pure water to wastewater in laboratory water purifiers is severely imbalanced

Check if the flushing solenoid valve is damaged

Check if the wastewater proportioner is blocked or too conductive

Check if the RO membrane is clogged or if the removal rate has significantly decreased

9、 The laboratory pure water machine keeps flushing

The wastewater ratio is ineffective or the flushing opening is not tight