What are the signs of a worn out pump?

[Daftoldgit]

I've been having to use more flow on the controller to get the same amount of flow at the brush, over the last couple of months turned it up from 25 to 35 (gradually). is that a sign of a worn out pump?

 

[Pjj]

If the water is colder it’s thicker so you will have to increase the flow rate , a worn out pump could give this as well but normally they go noisy from my experience

 

[Daftoldgit]

No noise that I've noticed, but it's quite a few years old, dunno what their lifespan is? It could be the cold weather although it was quite warm last week so probably not unfortunately.

 

[Pjj]

No noise that I've noticed, but it's quite a few years old, dunno what their lifespan is? It could be the cold weather although it was quite warm last week so probably not unfortunately.

I generally replace mine every 6-7 years they are pumping 8 hours a day with hot water we use the aqua tech pumps I find them excellent and good value for money , the last one I replaced was leaking water into the motor but was still working fine , others have started getting noisy and drop off with flow rate .

 

[kevinc250]

it could possibly be your battery if its over 18 months old, as window cleaners we really do put batteries through the mills, if your battery is over two years old and is not holding its charge then i'd replace that first.

 

[P4dstar]

Even simpler than messing with the battery first, try recalibrating the pump. The change in temperature affected the pumps on one of our vans last week, A quick recalibration and they're working as normal again.

If you have a spring controller you just set the controller to 30, hold the enter and the up button until it reads cal. Cal and some numbers will be displayed. Then press down until it gets to 0 and reads AUT. Hit enter and it will calibrate itself. Before you start you should have your longest pole connected, flowing and fully extended.

 

[ched999uk]

Even simpler than messing with the battery first, try recalibrating the pump. The change in temperature affected the pumps on one of our vans last week, A quick recalibration and they're working as normal again.

If you have a spring controller you just set the controller to 30, hold the enter and the up button until it reads cal. Cal and some numbers will be displayed. Then press down until it gets to 0 and reads AUT. Hit enter and it will calibrate itself. Before you start you should have your longest pole connected, flowing and fully extended.

@Ian Sheppard has produced a guide of setting calibration here: DE ( Dead End ) Why set it he suggests that you should set the flow to what you normally use then auto calibrate.

 

[P4dstar]

@Ian Sheppard has produced a guide of setting calibration here: DE ( Dead End ) Why set it he suggests that you should set the flow to what you normally use then auto calibrate.

Alright smart ar53, Ian’s might be a little more in depth than mine ??? in my defence my usual setting is 30 though.

 

[Iron Giant]

It used to cost effective to replace the diaphragm in the pump as the bushes wear out over time, but they are over £30 with delivery, might be easier to buy 12v 100psi 5.2lpm Shurflo Diaphragm Pump – Pure Freedom as they are on sale