Here's the scoop;
ensuite bathroom on 2nd floor with shower, basin and toilet.
Lomac 3000 macerator handles all this.
Pumps vertically about 10ft then horizontally about 30ft (pump is well capable of this).
2 problems;
1. Whilst showering the pump does not keep up with the water level so you end up ankle deep in water and cutting the shower short.
Once the shower starts the pump kicks in about 12 seconds into the shower time, great, then about 12 seconds later it kicks in again, beauty, but then there is about a 50 second wait before it kicks in again, then 12 seconds, then 12 seconds, then 50 seconds and so on.
It's these 50 second intervals that are the problem (I think).
During the 50 second interval the water all comes running back down the discharge pipe out of the loft and back into the macerator, sounds a bit like a waterfall, especially at night or when it's quiet.
I'm sure it's running back into the macerator, even though there is a check valve built into it. I pulled it apart and felt the valve with my finger, it seemed to be closing off OK.
The plumbers that installed this also say they installed a check valve somewhere in the vertical run of the pipe, yep, somewhere in the wall.
2. Problem 2 is related to problem 1, i.e everytime you flush the loo, it too all runs back into the macerator. Some waste gets pumped out in both cases as I have heard it from outside where the macerator pipe meets the main soil pipe.
It just seems to me that if it wasn't for the water running back down into the macerator then the macerator could just keep pumping every 12 seconds and keep the shower free from water. The backflow of water is keeping the macerator 'busy' and not allowing to do it's job for around 50 seconds.
I assume the check valve in the wall is faulty? and perhaps the one in the macerator? I'm sure I can hear the backflow going back into the macerator but it may just be the pipe filling up....
I don't want to rip the wall apart, what about a check valve where vertical meets horizontal? single or double CV? The pipe they have used is pvc, what CV do I need?
Also, just to confuse things even more....I can put the shower head into the basin and turn it full on, it never over flows, only the shower tray does. (the backflow thing still happens though but the macerator kicks in more often with the basin, about every 8 seconds then a 30 sec pause).
Thanks in advance to all.
MJB.
ensuite bathroom on 2nd floor with shower, basin and toilet.
Lomac 3000 macerator handles all this.
Pumps vertically about 10ft then horizontally about 30ft (pump is well capable of this).
2 problems;
1. Whilst showering the pump does not keep up with the water level so you end up ankle deep in water and cutting the shower short.
Once the shower starts the pump kicks in about 12 seconds into the shower time, great, then about 12 seconds later it kicks in again, beauty, but then there is about a 50 second wait before it kicks in again, then 12 seconds, then 12 seconds, then 50 seconds and so on.
It's these 50 second intervals that are the problem (I think).
During the 50 second interval the water all comes running back down the discharge pipe out of the loft and back into the macerator, sounds a bit like a waterfall, especially at night or when it's quiet.
I'm sure it's running back into the macerator, even though there is a check valve built into it. I pulled it apart and felt the valve with my finger, it seemed to be closing off OK.
The plumbers that installed this also say they installed a check valve somewhere in the vertical run of the pipe, yep, somewhere in the wall.
2. Problem 2 is related to problem 1, i.e everytime you flush the loo, it too all runs back into the macerator. Some waste gets pumped out in both cases as I have heard it from outside where the macerator pipe meets the main soil pipe.
It just seems to me that if it wasn't for the water running back down into the macerator then the macerator could just keep pumping every 12 seconds and keep the shower free from water. The backflow of water is keeping the macerator 'busy' and not allowing to do it's job for around 50 seconds.
I assume the check valve in the wall is faulty? and perhaps the one in the macerator? I'm sure I can hear the backflow going back into the macerator but it may just be the pipe filling up....
I don't want to rip the wall apart, what about a check valve where vertical meets horizontal? single or double CV? The pipe they have used is pvc, what CV do I need?
Also, just to confuse things even more....I can put the shower head into the basin and turn it full on, it never over flows, only the shower tray does. (the backflow thing still happens though but the macerator kicks in more often with the basin, about every 8 seconds then a 30 sec pause).
Thanks in advance to all.
MJB.