Pedrollo PKM90 Capacitor

The capacitor listed to suit the Pedrollo PKM90 single-phase peripheral pump is a 20 µF (20 uF / 20 MFD), 450 VAC CBB60 motor-run capacitor with lug (spade) terminals. Before ordering, read the µF value printed on your old capacitor: if it shows anything other than 20 µF, order that value instead, and never fit one with a lower voltage rating.

Choosing the right capacitor for the Pedrollo PKM90

The PKM90 motor is single-phase, and its run capacitor stays in circuit the whole time the pump is going. The replacement needs to match the old capacitor’s µF value, within about 5 percent, and have a voltage rating at least as high as the old one. This one is 20 µF with a 450 VAC rating, which covers a normal 230 V household supply.

Read the value printed on the side of your old capacitor, marked µF, uF or MFD, rather than going by the pump name alone. The PKM90 is one of several Pedrollo PKM models, and a similar-looking pump or a nearby model number is no guarantee of the same 20 µF value. Capacitor details for the wider PKM range are in the Pedrollo PKM capacitor guide.

Signs the PKM90 capacitor has failed

• The motor hums at switch-on but the shaft does not turn, or only starts if the shaft is spun by hand.
• The breaker or the motor overload trips soon after the pump starts.
• The pump runs slow and the motor gets hotter than usual.
• The old capacitor case is swollen, split or leaking.

Same 20 µF rating, other pumps

The same 20 µF 450 VAC rating is listed for the Davey PowerMaster. It is also sold on its own as a 20 µF 450 V CBB60 capacitor. A run capacitor can hold a charge after the power is off, so isolate the pump and discharge the old capacitor safely before touching its terminals. If you are unsure, use a registered electrician.

If the PKM90 seal is due as well, the Pedrollo PKM90 service kit includes this capacitor with the seal and both motor bearings.

Before you order

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

What size capacitor does a Pedrollo PKM90 take?

The listing to suit the Pedrollo PKM90 is a 20 µF 450 VAC run capacitor with lug terminals. Match the µF printed on your old capacitor, and order that value if it is different.

Can I use a higher voltage capacitor on my Pedrollo PKM90?

Yes, a higher voltage rating is fine as long as the µF matches. Never fit a PKM90 capacitor with a lower voltage rating than the old one.

Do all Pedrollo PKM pumps use a 20 µF capacitor?

Not necessarily. The Pedrollo PKM90 listing is 20 µF, but don't go by the pump name or model number alone: read the µF printed on your old capacitor and order that value.

How do I know if my Pedrollo PKM90 capacitor is bad?

A PKM90 that hums but won't start, trips the breaker, or runs hot and slow often has a failed capacitor. A bulging or leaking case is a clear sign it needs replacing.

Is the Pedrollo PKM90 capacitor the same as the Davey PowerMaster one?

Both are listed with the same 20 µF 450 VAC run capacitor rating. Still match the µF on your old capacitor before fitting it to your Pedrollo PKM90.

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.