I received a powerpoint presentation from Grundfos Pump Co about iron oxide and their pumps.
For the past 30 years, they have tested their pumps for magnetite contamination and do not release any design for production if they do not pass an accelerated 15 year test.
They also reference the German Standard for water quality for boilers VDI-2035.
Put into English terms
Conductivity 50 micromho/ in (high purity water, basically RO water with oxygen scavengers added)
Cloudiness 0 (no suspended particles in the water)
8.2 to 10 pH water that has been chemically treated to raise the pH
oxygen level 0.5ppm ( most city water is about 7.0 ppm) water has been treated with an oxygen scavenger
Putting "pure" water in the system is to no avail if the system was not first cleane and flushed prior to adding the water.
I received a powerpoint presentation from Grundfos Pump Co about iron oxide and their pumps.
For the past 30 years, they have tested their pumps for magnetite contamination and do not release any design for production if they do not pass an accelerated 15 year test.
They also reference the German Standard for water quality for boilers VDI-2035.
Put into English terms
Conductivity 50 micromho/ in (high purity water, basically RO water with oxygen scavengers added)
Cloudiness 0 (no suspended particles in the water)
8.2 to 10 pH water that has been chemically treated to raise the pH
oxygen level 0.5ppm ( most city water is about 7.0 ppm) water has been treated with an oxygen scavenger
Putting "pure" water in the system is to no avail if the system was not first cleane and flushed prior to adding the water.