Davey Silensor SLS150 Capacitor

The capacitor listed for the Davey Silensor SLS150 is a 12 µF (12 uF / 12 MFD) run capacitor. This CapacitorsNZ part is a 12 µF, 450 VAC CBB60 motor-run capacitor with lug (spade) terminals, for the single-phase 1.1 kW pool pump. Before ordering, read the value printed on the capacitor already in your pump: if it says 12 µF this is the one, and if it shows another value, order that value instead.

Choosing the right capacitor for the Davey Silensor SLS150

Three things need to line up. The capacitance must match the old capacitor (within about 5%), the voltage rating must be the same or higher, and the terminals need to suit your wiring. This one is 12 µF at 450 VAC with lug terminals, and 450 VAC is comfortably above a 230 V supply.

The µF figure is printed on the side of the old can as µF, uF or MFD. Motors sold under one model name can change between production runs, and a previous repairer may have fitted a different value, so the number on your capacitor matters more than the model name. Our Davey Silensor SLS150 capacitor guide walks through it, and the same part is sold as a plain 12 µF 450 V CBB60 capacitor.

Signs the SLS150 run capacitor is failing

A run capacitor stays in circuit the whole time the motor runs, so as it weakens with age and heat the motor gets less help to start and turn. Typical symptoms:

• The motor hums at switch-on but the shaft doesn’t turn, or it only starts after a nudge.
• The motor’s overload or the circuit breaker trips shortly after starting.
• The motor runs hot or sounds sluggish.
• The old capacitor is swollen, cracked or leaking.

Other Davey pumps listed with a 12 µF capacitor

Our listings for these Davey pumps also use a 12 µF capacitor: Dynaprime, HS50, HS60, PACR100, PCCR100, PCCR150, Silensor SLS75, Silensor SLS100, Silensor SLS200 and the XP Series. Whatever the pump, check the old capacitor rather than assuming.

Safety when changing the SLS150 capacitor

Switch the pump off at the wall and unplug it or isolate it at the board before opening the terminal cover. A capacitor can hold a charge after the power is off, so don’t touch the terminals until it has been safely discharged. Photograph the wiring before you disconnect anything. If you’re not confident working on mains wiring, get an electrician to fit it.

Planning to open the pump for a leaking seal as well? The Davey Silensor SLS150 service kit bundles this capacitor with the matching seal, and parts for other models sit on our Davey service kits page.

Before you order

Check the old part before fitting: match the µF printed on your old capacitor.

What size capacitor does a Davey Silensor SLS150 take?

The capacitor listed for the Davey Silensor SLS150 is 12 µF, 450 VAC. Always match the µF printed on the capacitor already in your pump.

Can I use a 450 V capacitor if the old Davey Silensor SLS150 capacitor says 400 V?

Yes. A higher voltage rating is fine as long as the µF matches, but never fit a lower voltage rating than the old capacitor on your Davey Silensor SLS150.

Does the Davey Silensor SLS150E take the same capacitor?

SLS150E is a model code listed for the Davey Silensor SLS150, but don't assume the 12 µF value carries over. Read the µF on the capacitor fitted to your pump and match it.

Is the Davey Silensor SLS150 capacitor the same as the SLS100 and SLS200?

Our listings for the Davey Silensor SLS75, SLS100 and SLS200 use a 12 µF capacitor, the same rating as the Davey Silensor SLS150 listing. Check the value on your old capacitor to be sure.

Why does my Davey Silensor SLS150 hum but not start?

A humming motor that won't turn is a common sign of a weak run capacitor on a single-phase pump like the Davey Silensor SLS150, though a seized shaft can do the same, so check it spins freely by hand with the power off.

What if it doesn't fit?

If you're unsure, send us a photo of your old part and the pump's label before ordering.