Grundfos Selectric CH Pump
- Thread starter Gregor
- Start date
Drain off and check the colour of the water pitch black means sludge, the exact amount depends on other factors ie cold spots in rads.
Give it a chemical clean at least and add some inhibitor this can only help and only costs you about £30 with decent chemicals ie Sentinel/Fernox.
Pete
Give it a chemical clean at least and add some inhibitor this can only help and only costs you about £30 with decent chemicals ie Sentinel/Fernox.
Pete
DIYnot Local
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