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Careful consideration also must be given to maintaining pumps over their lifespan as both installation type and the pump technology chosen will impact the time taken to maintain units and how easy they are to maintain.

Submersible pumps typically involve the lowest investment cost but are very difficult to maintain effectively. If the liquid being pump is particularly corrosive, they can be troublesome when attempting to reseal after maintenance work on either the motor or cable gland – both frequent sources of water ingress.

Furthermore, if corrosion is present on sealing faces, sometimes the only way to obtain a good seal is to machine or replace the corroded parts to guarantee the seal will perform – potentially adding to maintenance woes. Confined space training and access control can also be required in certain installations meaning the number of people required to undertake maintenance quickly multiplies.

Immersed pumps can require removal via a crane for maintenance to be performed, and often the easiest types of pumps to maintain and service are those which are surface mounted.

Vertical inline and Long coupled means maintenance can be undertaken whilst pumps are in situ without removal of motor. It also means that should the chamber become flooded the pump motor is located high and as far out of reach as possible from the fluid. Over time potentially leaks can occur on valves, or seals making this a worthwhile consideration for pump protection. We recommended adding a liquid detector and small submersible pump as a safeguard in case the chamber floods.