Stuart Turner Booster Pump Repair London

Aquaboost and iBrio faults

Rapid cycling is the classic Aquaboost complaint and it is almost always the accumulator: once the pre-charge is lost there is no stored volume, so the pump chases every small draw-off. Pressure that sags during simultaneous use points at a worn impeller stack or a set point that has drifted. Dry-run lockouts mean the inlet or break tank cannot supply the pump. Controller faults show as no start, erratic starting or a display that has failed, and on iBrio sets the fault log usually identifies them quickly.

• Waterlogged or failed accumulator diaphragms
• Drifting set points and sensor faults
• Worn impellers and lost pump head
• Dry-run lockouts from inlet or tank problems
• Controller and display failures
• Passing non-return valves

Testing the whole set, not just the pump

We drain the water side of the vessel to read a true pre-charge, recharge it to the correct figure for the set pressure and prove the diaphragm holds. We then record cut-in and cut-out against the design set point, clean the inlet strainer, test the non-return valves, and run the pump under load with the current measured against the nameplate. On break tank installations we check the float valve, the level and the tank condition, because a starved pump looks identical to a failed one.

• True pre-charge read on a drained vessel
• Set pressures recorded against design
• Strainer cleaned and NRVs tested
• Running current measured under load
• Break tank level and float valve checked

Spares, repair economics and warranty

Stuart Turner supports these ranges well, so seals, impeller stacks, sensors, controllers and vessels are available and a repair usually costs a fraction of a new set. If the unit is in warranty we will tell you and advise a manufacturer claim rather than charging you. Replacement is the recommendation only where the pump body is eroded, the motor has burnt out or the set is genuinely undersized for the building, in which case we quote the correct duty.

Blocks and commercial installations

Where an Aquaboost set serves a block or a commercial premises, a failure means upper floors lose water, so we attend the same day, get the building supplied, and follow up in writing for the managing agent. After the repair we recommend a maintenance interval based on the duty hours the set is actually doing, because a set serving a busy building needs its pre-charge and changeover checked far more often than a domestic installation.

• Same-day emergency attendance
• Written reports for agents and facilities teams
• Maintenance interval set from actual duty hours