posted this 08 January 2018
We have a Monsoon Universal Twin 3 bar pump in the loft pumping water for our 5 bedroom, 3 bathroom home. Serial number is 0937018-075 Part 46410. The level of the water in our header tank in the loft is about 1.6m above the pump.
I bought this pump as a used item on eBay about 4 years ago after a succession of new Salamander pumps leaked. I am so impressed by this Stuart Turner pump; it is so much quieter, switches on faster and is far better constructed than the plastic Salamanders
we had before.
However, in the last 6 months, our Monsoon pump has started to turn itself on every 30 minutes or so for about 5 seconds and occasionally for as long as 10 seconds. But I don't think it is pumping water. I think it is re-pressurising itself. There are no leaks
from any taps or cisterns. I have taken the pump apart as far as I can, checked action of the valves, cleaned things up and used PTFE tape around the pressure vessel and switch threads but it continues to switch on every 30 minutes or so.
As you can probably guess, if someone is having a shower and someone else flushes the loo, the person showering gets scalded. And 2 people cannot shower at the same time. So I realise 3 bar is probably not strong enough for our home.
My questions are;
1. Is there a DIY fix for the fault our pump has today? Or is it towards the end of its useful life? How old is it?
2. If I purchase a new Stuart Turner pump, should I go for 4.5 bar? Would this mean 2 people could shower at the same time and not be scalded when someone flushes the loo?
3. If I purchase a new pump, should I buy the Universal version with the pressure vessel or would the standard version be just as good (we have a 1.6m head of water above the pump). Does the Universal pump switch on faster than the standard in response to water
flow? I would not want to lose the instant response we enjoy today with our Universal pump.
Thanks for your advice