@Ray Moore,
Ray;
As a past service manager for Rainsoft I know there was a big push to Replace the brass valaves with new Fleck composite valves. Of course younhave a better valve that will never ever wear out, but also needs routine maintainance. Of course ur dealer is in the business of making money and selling service is part of making money. ok now for help, is your unit mechanical (with dials your turn manaually) or Digital (they call it a computer). If the piston is stuck and the motor still turns you have two problems, # 1 the O-rings (3) on the piston are probably swelled up, #2 the shear pin is probably broken. The o rings are no problem to get at any hardware store, The problem is the brass shear pin, The local Rainsoft dealer may sell you the parts if you take them to the dealership but take your paperwork with you to prove its ur unit, some dealers son;t sell the parts unless you can prove ur the original purchaser. Now all the parts have lifetime warranty for replacement, You just need to show the paperwork to the dealer. The only parts that are not lifetime warranty is electrical, They have a set limit of time. Most honest dealers will replace the parts if they are covered. If u decide to do the rebuild your self a couple very important rules, first :"Do not use vaseline on the o-rings" that will cause them to swell, Use a water soluble lubricant. Rainsoft uses DOW 111. The second and more important, when you are done with rebuild, Close the main water valve. I don;t care if you have a bypass valve or not. Open a cold water faucet in a bathtub. COLD WATER ONLY. And only a faucet without an screen in the spout, or remove screen. Then SLOWLY turn the water back on, this is important SLOWLY. if you rush refilling it U can cause an air bubble and blow the mineral back up into the valve and as soon as u regenrate it you;ll break another shear pin. ( buy a couple pins if the dealer will sell them to you)
I've had lots of people use ground off finish nails, If you do it voids the warranty on the motor. Oh by the way the shear pin only goes in one way. Make sure the hole lines up perfect before u hammer that pin in. Also after then pin is in take a file and smooth it down to the shaft. The other important thing to watch when rebuilding the unit is when you put the motor back on with the wheels in place be careful of those two micro switches on the side they break very easily, and you have to depress the switches to slide the motor back on. Very little space for alignment. Once u have cold water running clearly out of the faucet. then shut the faucet off. Now have ur manual ready to follow the manual steps. For mechanical timer u turn the timer knob slowly until the motor kicks in. (very slowly) if u miss a step the unit will be out of cycle. The another problem with doing the work urself is knowing what step the unit is in. As professionals we take a magic marker and draw a line on top of the two white wheels, That way we know that if the lines are on top center the unit is in normal operating mode. If you have the Digital unit. then you have to program the unit into Service or manual step model, Your operators manual should tell you the steps. The purpose if each step is to drain off any air pockets so you don;t blow mineral back up into the valve body and shear a pin. Now you should be in business barring any other problems. The other big problems an cause more service calls then anything else. Is a solid salt build up in the salt tank. Think of it having 4 or 6 inches of concrete in the bottom of the tank, There are tiny little slits in that tube or float chamber and if wet mushy salt is blocking those holes the unit will still regenrate but no salt will be used and your water will be hard. So clean out your saly tank twice a year, put the good salt back in your just cleaning out the mush stuff. The other big problem is the little adapter that the salt tube connects to, On the older units there is a screen inside there that gets plugged. Also on the brass valves on the base of the valve you will see a Slotted Plug, that is the injector. Thats what causes the suction to suck out the water in the salt tank. They are very hard to remove. We normally just punch them through and they live their life inside the tank and we put a new one in. The only other way to get it out unless your very lucky is to unhook the water lines and spin the valve head off. that injector in 10" long so be careful and lift the valve straight up when removing it. then u can take little piece of wood or hammer and knock it out of the hole. UP not down. and then air compressor and blow it clean inside. Take a paperclip and punch through that little hole in the center on the top side of the injector. All your doing is cleaning the hole, there is a little ball inside so don;t go digging around in there. Just clean the little hole.
Ok for the Iron Filter it works the same as the Softner, But the two biggest calls on the iron filter is a clogged injector tube. Or someone overfilled the little Potassium Tank and potassium clogs up the pick up tube inside the Pot tank. If you have a straight filter Iron system not does not have the little puppy tank hooked to it. The mineral inside the tank will probably have to be replaced, The Carbon in there cannot take a long time without regenerating and backwashing the iron buildup down the drain. In that case you'll probably just be better off calling Rainsoft or other softner people to come in to fix it for you. Unless your really mechanically inclined. The basic rule on Iron tanks is, they need upkeep every 12 months. Either the puppy tank needs refilled or the valve is clogged. Which state are you from? One of the dealers I worked for was called H2O . Go figure