Repair of the HC 150 AQUA dosing pump

Dosing pumps from the Italian company AQUA have gained popularity thanks to their high reliability, ease of repair, and reasonable price.

The largest segment consists of solenoid dosing pumps, which are used in various industries (washing stations, dosing of enzymes and yeast, water chlorination, grain disinfection, etc.).

The design of a solenoid pump is quite simple. The main components are the solenoid itself, the dosing head, and the electronic control board.

If the pump stops working or significantly deviates from the required parameters, the cause is usually a failure of one of the above-mentioned components.

A pump model HC 150 (discontinued) was received for repair. The customer’s complaint was that the pump does not deliver the required dose of detergent. With a rated capacity of 5 l/h, the pump delivers only 1 l.

After thorough inspection and test runs, the cause of the unsatisfactory performance was identified as deformation of the diaphragm.

In the photo below, you can see the difference between a new diaphragm and a diaphragm that has reached the end of its service life.

After replacing the diaphragm, the pump restored its performance and continues to successfully perform its function.

In this case, the repair is cost-effective since the cost of the diaphragm is low. If several factors causing failure are identified during diagnostics, such as a burned-out solenoid and a failed electronic control board, purchasing a new dosing pump would be more appropriate.

Specialists from our company are always ready to help you choose the right model.