Replace pool pump through a 50×50 cm hatch

“The impossible is also possible, because thunderstorms are also weather.” With that saying by Herman Finkers in mind, we started this project.

During an inspection, it became clear that the existing pump for the swimming pool's rapids was no longer reliable. Replacement was necessary to prevent malfunctions and downtime.

There was one major obstacle: the installation was located in a basement accessible only through a 500 x 500 mm floor hatch. As a result, both the new pump and our technicians had to enter.

In our workshop, we disassembled the entire pump skid. We then built a test setup to check if all the individual parts fit through the hatch. This revealed that the skid frame also needed to be shortened further.

At the site, the parts were brought in one by one through the hatch. In the basement, we assembled the Johnson CN 200-200 and connected it to the existing pipework. The motor was also repositioned and aligned.

Why the Johnson CN (CombiNorm) for this application:

• Suitable for mildly aggressive liquids such as chlorinated pool water, provided the correct material is selected.
• Reliable during continuous use, like a current
• Back-pull-out design: maintenance without disconnecting the piping
• Modular design, easily adaptable to spatial requirements

Our technicians are VCA** certified and work according to established safety procedures. This is essential when working in a confined basement space.

All components could be installed separately, without compromising on quality or reliability. The complete installation is functioning optimally and trouble-free again, using the existing pipework and without remodeling the basement.