Davey - Run/Start Capacitor 12 mF for Silensor SLS100E / SLS150E / SLL150E - 400270SP

Davey – Run/Start Capacitor 12 mF for Silensor SLS100E / SLS150E / SLL150E

This is the genuine Davey replacement run/start capacitor (12 mF) for the Silensor single-phase pool pump range. The capacitor provides the phase shift needed to start and run the single-phase motor reliably, and is a common service item when a pump hums but fails to start, runs sluggishly, or trips its thermal overload.

Davey part number 400270SP is supplied while stock lasts and is directly superseded by part number 403231 — functionality and fitment are identical. Order 403231 if 400270SP shows as out of stock.

Compatibility

This capacitor fits the Davey Silensor and SilensorPro single-phase pool pump models SLS100E, SLS150E, and SLL150E. These are the European CE-variant (“E” suffix) water-cooled Silensor pumps. It does not fit three-phase Silensor models or other pump families — always verify your pump model label before ordering.

Why genuine matters

The Silensor’s water-cooled motor operates to tight electrical tolerances. Using a non-OEM capacitor of incorrect capacitance or voltage rating can cause hard starts, premature motor winding failure, or nuisance tripping. A genuine Davey capacitor is matched to the motor specification and ensures safe, reliable operation in line with the original design.

Installation

Capacitor replacement requires isolating and locking out mains power before opening the motor terminal cover. The capacitor is located in the motor end-cover housing and is typically secured by a bracket and two spade terminals. This work should be carried out by a qualified electrician or an authorised Davey service technician in line with local wiring regulations.