| Q: | |
| A: | Metal remover will cause relay chattering and even display
flickering on the best built programmables, with or without CO2, fully
tested and run wet. In 2006 we experienced a 40,000 gallon new build pool
with three quarts Metal Magic (phosphonic acid based as with all metal
removing and scale control agents) put in by the pool builder, not an
Ecosmarte dealer. It resolved with two 24 hour non-chlorine shocks AND an
aluminum sulphate drop, with phosphates testing zero on Natural Chemistry.
The phosphate test does catch some of these sites however when interrogation
of startup or operation personnel is not possible or inaccurate.. It took three weeks to figure out, we burned out components in the fourth or fifth day of operation on two separate build generations,(2006 March and 2006 August, both current Version Code) and the third unit fired up without issue after the alum drop preceded by the24 hour spaced consecutive non-chlorine shocks. There was no issue in the build or original software upload on the second programmable that failed. In 2007 we will endeavor to document which components, if any other than the code crashing, fail in a metal remover environment. The 40,000 gallons on the site referenced would indicate this problem will be more dramatic on smaller pools and only discovered by questioning the builder, consumer or service person on whether or not metal remover was put in the pool. We will replicate in our new R and D department and have noted in the updated manual. |