We believe that high power efficiency and durability are attained if a pump repair is carried out by the manufacturer using the original spare parts. This is why, we manufacture the spare parts for all the types of pumps that we produce, including those phased out but still operated. Additionally, we offer repairs for all the pumps manufactured by us, irrespective of the date of manufacture. This results in improved operating reliability and lowered operating costs for all pumps in the long run.
Properly designed pumps can be operated for as long as several tens of years if repaired properly. Proper repair refers to periodical major repair procedures including replacement of main parts like flow system components. For best results, the repair must be done using spare parts responding to the original technical documentation, which is available to the pump manufacturer only.
If, for some reason, the repair cannot be done by the manufacturer or the documentation is missing, the restoration and reconditioning of the spare parts can be carried out through the measurement of worn parts. However, the major parameter determining pump components (e.g. impellers or guides) are cast parts and, usually, if they are reconstructed based on measurements, this may lower down the quality of the pump after repair. This is because the complex geometry of the flow system parts and manufacturing deviations typical for casting technology, may prevent accurate measurements of the original dimensions on the part itself. As a result, the duplicated parts will be of inferior quality as compared to the original ones, which will adversely affects the pump’s condition/parameters.
Also, the major pump repair requires special technological equipment, including balancer, pressure testing equipment etc., which is by all means available to the specialized manufacturer, in contrast to 3rd party repair shops, which may not have it at their disposal. The testing station allows for checking the power-related parameters of a pump after repair, since the repair should also restore the pump’s efficiency, apart from its mechanical parameters. This is done to prevent the end user from bearing high operating costs due to excessive power consumption.
The formal and legal aspects of pump repair should be taken into consideration too. If a maintenance carried out by a 3rd party repair shop involves the replacement of essential parts, this will be treated as a significant change to the pump design and the documents for operation approval (e.g. declaration of conformity to the standards, CE marking) may be found no longer valid. In such a case, the company, which has performed the repair should follow the procedure required for the pump to be approved for operation i.e. prove that the materials and spare parts used for the repair are compliant with the harmonized standards and issue an EC declaration, accordingly.