Success! I have changed O-rings 21-17-14-11 and the pump can now hold pressure, and doesn't turn off. It sounds way better then before, and the filter basket is now always full of water even when pressure applied in outlet. The O-rings didnt look bad...probably part 11 and 14 made the difference. I ...

Hi Plunschmeister Thank you so much for the link, and the time you have put into that post, trying to repair the pump. ..and you succeeded! Yesterday a cleaned the flow propeller, rotary switch, integrated filter... again. Leak in rotary switch disappear. I did not mount part 32 and made a test. Aft...

Again something came into my mind. I did notice some water drops behind the start/run switch...water drops near o-ring number 14 Isn't that a symptom of a leak in the suction side? I will try again today.. - First i will try to remove and clean all parts of the start/run switch...check o-rings and r...

I also read this in another forum. "Lösung für AUS/AN Habe die 4000/4i. Nach einem Frostschaden (Ich war mir sicher, die Pumpe im Winter in den sicheren Keller gestellt zu haben - aber das war leider im Jahr davor ..... :-) mußte ich den Pumpendeckel und das Gehäuse des Impellers oder Druckschalters...

HI Goahead I found this in the 4000/4 pumpe manual:(not the "i" version) - If the suction heights are high, use a suction hose with a small diameter. Important is the waterlevel in the rainwater reservoir. since i have about 8m suction pipe lenght? New suction pipe in 1". Delivery side connection: ...

Hallo Plunschmeister I better find a new suction hose, plastic, and try this all over again. I found this in the 4000/4 pumpe manual:(not the "i" version) - If the suction heights are high, use a suction hose with a small diameter. Should i buy a 3/4" hose and new pipe, instead of using the 1" hose,...

As promised. http://up.picr.de/26034652sm.jpg http://up.picr.de/26034653kb.jpg http://up.picr.de/26034654ul.jpg http://up.picr.de/26034656sp.jpg And a video, where you can ear the pump working. I remenber that the pump had a "smother sound" then the atual one. https://youtu.be/3C4qXpdi314 I think it...

Hi Plunschmeister Thank you for the warm welcome. I will take some pictures when i get back home and post them here. Suction side may be indeed a source of problems. I couldnt get a plastic connection to the pump at the time,just like this (http://www.gardena.com/de/bewasserung/pumpen/saugschlauch-a...

Thank you Bohrbrunnen

Looking forward to get some help.
I would say that i lost 0.5bar pressure. If i can get 1bar plus of pressure, everything should be ok again.

My grass is screaming for water...

regards
G.

Hi Everyone. First, sorry i dont speak German :( I am Portuguese and i have a 4000/5i pumpe, pulling water from a rain reservoir.Pump wasn't starting after the winter ended. First the motor did not turn (just humm)then the flow sensor was not turning (pump turning off after some seconds) So i open t...