- #1
MARK JAMES
- 13
- 5
Hi everyone! I am seeking advise to a corrosion problem, I have a circulator design I am working on. This is a 40 to 115 degree closed loop “city water” circulator. The water reservoir is 304 stainless and has a115v-1500w immersion heater, threaded into the tank. There is an overtempt snap disc attached to the side of the sst tank with potting compound. The sst reservoir is sitting on an aluminum stand (screwed to the aluminum body of the entire outer case assy) above the pump and cooling lines running underneath it.
There are brass elbows and silicone rubber hose in the loop and water is pumped thru all by an Iwaki mag drive pump.
Initially, the heater elements were being eaten up /corroded and shorting out. I added a magnesium anode threaded into the top of the tank and now the anodes are being destroyed/dissolved rather quickly and the dissolved anode material is attaching itself to the heater element and blowing the snap disc.
This portable circulator is plugged into an external duplex box, attached to the back of another powered piece of equipment.
Question, could I have a grounding issue? Or is this a normal downside to dissolving magnesium anodes? Thanks in advance for any ideas!Mark
There are brass elbows and silicone rubber hose in the loop and water is pumped thru all by an Iwaki mag drive pump.
Initially, the heater elements were being eaten up /corroded and shorting out. I added a magnesium anode threaded into the top of the tank and now the anodes are being destroyed/dissolved rather quickly and the dissolved anode material is attaching itself to the heater element and blowing the snap disc.
This portable circulator is plugged into an external duplex box, attached to the back of another powered piece of equipment.
Question, could I have a grounding issue? Or is this a normal downside to dissolving magnesium anodes? Thanks in advance for any ideas!Mark
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