Question about Pentair Minimax Ch 400,000 Btu Propane Pool Heater Millivolt Ignition
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Posted on Jan 02, 2017
I am not sure if you have solved this issue, or not, but just in case.
If the tablets are not dissolving, there are two possible reasons. The first is that older tablets do not dissolve that well and if this is the issue, but new ones.
The second is that the 320 has a small screen at the bottom of the tubing. This can become clogged, or some the the tubing, and will need to be cleaned. The best thing to clean the parts on the 320, or other In-Line Feeders, is NON-ACETONE FINGER NAIL POLISH REMOVER. Make sure you use the NON-ACETONE kind since Acetone can melt the plastic parts!
You just need to soak them in the polish remover and rinse. If scrubbing is needed do so with a soft cloth, tooth brush or other non-abrasive material. For a parts breakdown and manual on the feeder, please follow the link below.
Posted on Jul 07, 2009
I am only asking, because I noticed that you reported that this is a 400,000 BTU heater.
And you are speaking of spa jets?
And... You stated that you are seeing pretty good flow coming into the pump, because you can see through the lid of your pump. This provides for me, a red flag. If water is coming into the pump at a good pace, it's got to be going somewhere, right?
you can't have X amount of water coming into the pump and have less then X returning to the spa. If this be the case, then you have an underground leak, and you will be noticing a water loss problem. So... i'm going to take a guess, that this may be a pool/spa combo?
if so, my guess would be that certain valves, are not properly opened or closed. And I would guess that water is returning to the pool, and the remainder of the water is flowing back through the spa jets, that you are reporting.
if this system that you are reporting about, is only a spa, then I will join the club, I too am stumped.
Posted on May 25, 2015
Three possible solutions, and I have personally made use of all of them with great success.
1. A common reason why the flow of water through the Pentair 320 canister is insufficient to dissolve the chlorine tablets is that the pool filter is dirty or just too old with ingrained sediment. If your pump pressure is continuously running high then this usually indicates a dirty or old filter that is making it difficult for the pump to get an adequate flow of water through the chlorinator. If thoroughly cleaning it makes no difference, treat yourself to a new filter; it's often an immediate fix and the pump pressure drop may amaze you. Old filters that have served their time are deceiving. They may look clean but the fine sediment trapped in their fibers can seriously degrade performance downstream in the chlorinator.
2. Another trick to help SEE what is going on is to replace the short black feeder hose to the Pentair 320 canister with PVC tube, 5/8" outside diameter, 1/2" inside diameter, and a short piece of Pyrex tubing inserted into the middle of the PVC tube to serve as a clear sight glass. PVC tube is rated 100 psi and is readily available at just 50 cents a foot at local hardware stores. Pyrex tube with an outside diameter of 1/2 inch (13 mm) can be bought cut to length for about a dollar per inch from EBay sellers. I also strongly recommend swapping this new feed tube assembly to the UPPER inlet of the chlorinator and moving the plug from there down to the lower inlet. See the attached photo.
You will need an 8 inch and 3 inch length of PVC tube, and a 4 inch length of Pyrex tube. Insert the ends of the Pyrex tube 1/2 inch into each piece of PVC tube with some Goop glue smeared all around the outside of the Pyrex ends. Do not get any Goop inside the Pyrex tube, and do this as quickly as possible, rotating the Pyrex as you insert it into the PVC to ensure that the Goop forms a complete seal. Then let it set, preferably for 24 hours.
Now you have a new feed tube 14 inches long in total, 3 inches of which is the Pyrex sight glass. Just take the unions and spring off the original black hose and transfer them to the new PVC tube, putting the spring on the 8 inch piece of PVC tube. The 3 inch piece of PVC tube should be at the top of the feed where it enters the Pentair control valve.
You will now be able to observe the rate of flow of bubbles in the Pyrex tube (transparent PVC tube soon becomes opaque because of the chlorine but Pyrex remains clear) and know if water is proceeding up the tube and then cascading down over the chlorine tablets. Adjust the Pentair control valve to check if the bubbles speed up and slow down.
3. Lastly, when you open the Pentair 320 to insert new chlorine tablets, the water will normally drain down and out of the canister. IMPORTANT - When you restart the pool pump, keep the cap OFF the canister but have it ready. Assuming you have the Pentair control valve set above 0 (zero) flow, you should soon see water starting to flow through your new PVC feeder tube and then entering and rising up in the canister. When it gets past the top of the chlorine tablets screw the cap on until it feels firm but not cranked hard. If it leaks a little, tighten until that stops. Now you have got rid of that potential air trap that can prevent water rising to completely cover the tablets. Do this EVERY TIME you add new tablets to the canister.
Posted on Nov 28, 2015
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