I am having trouble with a Victoria Plum shower which has a manifold similar to THIS. The symptoms are a small adjustment of the temperature control produces a massive swing in temperature. It is just possible to achieve a comfortable temp by micro-adjustment but it's not very steady.
It has not worked properly since it was installed a couple of years ago and has had very little use as a consequence. Our water is soft and scale-free. We recently had the house's water system upgraded with an unvented cylinder which gives excellent pressure on both hot and cold. I have tried cleaning the cartridge and immersing in vinegar, as they suggest, but no improvement.
As a last resort I am investigating the possibility that it was installed wrongly, with hot and cold feeds reversed. This has not revealed anything useful as there is definitely hot going to the stub marked H and the converse. However, the marks look like they were done with a felt tip (I cannot see any factory-stamped marks), so there is always the possibility that the plumber marked them incorrectly. It does not help that the unit looks perfectly symmetrical, so could have been fitted upside down.
The Victoria Plum installation guide (see HERE) describes a method of correcting reversed connections by turning the cartridge. However it doesn't make sense on two counts:
1. I cannot see a "52mm AF clamp nut". The only visible nut is the main one that seems attached firmly to the body of the cartridge.
2. There is no such thing as a "52mm AF nut". AF means "across flats" and is always given in imperial units (inches or fractions thereof).
Furthermore, if THIS is the correct cartridge (it looks identical) its width at the widest point shows as 47.6mm so there cannot be a 52mm nut.
Can anyone shed light on this or offer any suggestions? I don't want to spend £150 on a new cartridge only to find the pipes were reversed!
It has not worked properly since it was installed a couple of years ago and has had very little use as a consequence. Our water is soft and scale-free. We recently had the house's water system upgraded with an unvented cylinder which gives excellent pressure on both hot and cold. I have tried cleaning the cartridge and immersing in vinegar, as they suggest, but no improvement.
As a last resort I am investigating the possibility that it was installed wrongly, with hot and cold feeds reversed. This has not revealed anything useful as there is definitely hot going to the stub marked H and the converse. However, the marks look like they were done with a felt tip (I cannot see any factory-stamped marks), so there is always the possibility that the plumber marked them incorrectly. It does not help that the unit looks perfectly symmetrical, so could have been fitted upside down.
The Victoria Plum installation guide (see HERE) describes a method of correcting reversed connections by turning the cartridge. However it doesn't make sense on two counts:
1. I cannot see a "52mm AF clamp nut". The only visible nut is the main one that seems attached firmly to the body of the cartridge.
2. There is no such thing as a "52mm AF nut". AF means "across flats" and is always given in imperial units (inches or fractions thereof).
Furthermore, if THIS is the correct cartridge (it looks identical) its width at the widest point shows as 47.6mm so there cannot be a 52mm nut.
Can anyone shed light on this or offer any suggestions? I don't want to spend £150 on a new cartridge only to find the pipes were reversed!
