Recent content by oldsparky

I have had similar issues over the years. The pulsing can be caused by a number of things but in my case was a control board component failure. Replacement of the board by Grundfos was my option. My unit has a single line LDC display and shouts for 'Service' alternating with the fault...

Thanks, Tony, I will do that. The Schrader valve is bloody awkward to get to as it's behind the pump to the left. My pork sausage fingers struggle to get onto it so I will extend it when I have time. Off for a couple of weeks away from this damn awful weather - again thankyou all for your...

All done! I've left the prvs at their preset 3 Bar (I'm lazy) as they aren't easy to get to and I'm packing today. Set booster to 5.5 Bar and cut out at 3.5 Bar. Thing now works perfectly! Why on earth Gfos don't include this info is beyond me. Good job you know your stuff, Lee - many...

Sorry Icgs but they have changed the construction of the tank. The only access, having removed the cover as you say 6 crosshead screws, is via the hole you describe in the top of the unit - which is now covered with a mesh fly screen mastic sealed to the tank top! Cracking bit of design but...

Thanks Icgs. I checked the built in EV pressure (1.5 bar and obviously not commissioned as I suspected). Setting this to the correct pressure has had little effect on the problem. Real pain in the a*sr to get to the Schrader valve behind the booster pump. Checked the EV on the Tribune and...

Thank you, gentlemen. There are two expansion vessels. One contained in the packaged Grundfos unit, the other supplied with the Tribune (in 2005). As you suggest, I suspect the installer did not check and commission the pressure in the Grundfos vessel. Both vessels 'sound' like they ar not...

Hi There I wonder if anyone can help me please? I have recently had a Grundfos Home Booster installed to supply boosted water to hot and cold services via the integral tank and a Range Tribune 250l pressure cylinder. I have set the outlet pressure at 3.0 bar to match the existing...