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Fleck Valve - Greensand application - Purple Water After Regeneration
Last Updated: 05/19/2014
Question: When our fleck 2510 Greensand water filter is finished back washing, we have purple water in our lines. It is seems to be functioning properly, our sand level is normal, our brine tank is only filling above the potassium level . We just put a 2lb container in our brine tank. Not sure what to check next.

* Common problem. Check - clean or replace the Injector Set ( Nozzle & Throat ), check / clean injector screen ( right next to the Injector Set ), and carefully check the DRAIN ( DLFC housing removes, and you can inspect the "button" ) and Hose / pipe for "build up" that might be obstructing flow.
Also, you most likely need to "rebuild" the valve ( Fleck 2500 or 2510 model uses Main Piston, 60090 and Seals Kit, 60121 ), if you don't find the problem with the Injector or any Drain restriction.

Fleck 5600 Valves use Main Piston 60102-10, Seals & Spacers 60125, and Brine Valve Piston 60032 ( see this SET = 3456PSKITIRONFILTER ).

see: The drain housing with related DLFC buttons ( yours should be 5.0 or 7.0 gpm button depending on your tank diameter ),
DLFC Housing 2500 or 2510

For information - parts / video, on the Fleck 5600 Drain and button removal,
DLFC Retainer Fleck - 13173

MGS ( Green Sand ) or newer, Greensand Plus, are regenerated by Potassium Permanganate from a 5 gallon Feeder Tank ( looks like mini salt tank ). The Potassium Permanganate can be added at any time, in any amount. The system will dissolve a few ounces at a time. The system is similar to the Brine system of a water softener in that it draws out the solution and puts water back in at the end of regeneration cycle for the next time.

Note: The Iron Filter is High maintenance.
The Injectors get clogged and need to be frequently cleaned,

OR Replaced.
Fleck models normally use the # 2 PVC gray Injector Set ( Nozzle & Throat )
Autotrol ( either a Red "C" Injector or Green "D" injector is used ).

Question : fleck 5600 as an iron filter
I recently installed a Fleck 5600 from you set up for a green sand filter. Within 3 months the injector, brine valve and valve ports were plugged from Iron fouling. I cleaned them with a mild acid solution and got them relatively back to new. I am unable to draw adequate vacuum when regenerating. I need to order new parts but am wondering if there are any tips you may have to avoid the frequent cleaning/replacement of the parts. My source well has an Iron content of 2.5 PPM of Iron. and is set up to regenerate 2x per weak. Thank you, Chris

** Very typical because of the iron and organics we have in Florida water.
When I use to service these type units in Okeechobee area, it was common to have to clean or replace injector sets every 3 - 6 months.

The replacement Injector for the Fleck 5600 or 2510 is the # 2 PVC,
Injector Nozzle and Throat Sets Fleck Valves

*** Other things you could do:

1 ) Clean ( dump ) the old Potassium Permanganate out and start "fresh". A lot of oxidized iron builds up in the "feeder" tanks over time.
Tank Feeder for Potassium
Pad Felt Pad for standard Potassium Feeder = N1043

2 ) Use "technical" grade Potassium Permanganate, and not "free flow", IF available in your area.
It cost more, but is less likely to clog valve. And we currently do NOT sell any potassium permanganate.

3 ) Do not use the Greensand Filter, if it's just for Iron Removal.
A water softener can remove the 2.5 ppm iron.
But if this unit is also used to remove any hydrogen sulfide odor, you would need more than just a water softener.
System Recommendations
Odor - Sulfur (Hydrogen Sulfide) in your water

4 ) I'd be careful using acid, as it can make the injectors brittle and fail ( I know from personally destroying injectors soaked in STRONG acid solution ).

5 ) Also... how old is the Media? Typically "life" in Florida is 5 years ( I've seen 2 years - 10 years, depending on the application ).
It could be the media in the tank is "loaded up" with too much oxidized iron that it has not been able to "flush out" during Backwash cycles.
Greensand PLUS Replacement

For MORE about Iron Filters, and LIST of Common Media & Parts,
Iron Filter Repair and Maintenance

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