Pumps Maintaining Large Pumps is Now Simpler than Ever

Editor: Ahlam Rais

The Rotor and Drive Joint Access from Seepex for large standard pumps saves up to 80 % in maintenance time.

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Rotor Joint Access and Drive Joint Access for large standard pumps allows access to both the rotor and drive-sided joint.
Rotor Joint Access and Drive Joint Access for large standard pumps allows access to both the rotor and drive-sided joint.
(Source: Seepex)

Seepex creates direct access at the beginning of the second quarter of 2021. With the so-called Rotor Joint Access (RJA) and Drive Joint Access (DJA) for the new BNM range, the Bottrop-based company has ensured that, from now on, one wrench will suffice for the maintenance of large standard pumps with an individual component weight of up to 300 kg. Due to the size of larger pumps, inspection and maintenance can be challenging requiring special tools, piping to be dismantled, and even the pump to be moved out of place in some instances. The company now has a remedy: RJA and DJA for large standard pumps allows access to both the rotor and drive-sided joint. The often-time-consuming disassembly or even complete removal for maintenance is now a thing of the past, states the firm.

The individual components for large pumps often weigh several hundred kilos. From the piping to the pressure branch, stator and suction casing, almost the entire pump has had to be taken apart for the maintenance of the firm’s ‘giants’ until now. Often it has even been necessary for them to be transported to a workshop. The maintenance could therefore extend over several days, meaning high costs and an enormous amount of work for the system operator, adds the company.

The innovations provide a solution with user-friendly and cost-saving maintenance technology for the large models with an individual component weight of up to 300 kg. The maintenance solutions were developed on the basis of the already well-established Drive Joint and Rotor Joint Access solutions, which make the maintenance of hopper pumps easier and provide easy access to the joints and seals, mentions the firm.

Technically, however, the maintenance solution for large standard pumps is different from that of hopper pumps. In the case of hopper pumps, two sliding housing elements at the beginning and end of the hopper provide access to the rotor- or drive-side joint. For the considerably shorter block pumps, the new solutions make do with only one sliding housing element at the rotor connection. Access to the drive-side joint and the seal is made possible by the foot that is additionally attached to the suction casing. The entire rotating unit can therefore be removed without the need for an additional sliding housing section on the drive side, concludes the company.

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