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Old 12-02-2010, 03:35 PM   #1
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Bad Water Filter???

I replaced the charcoal filter cartridge a few weeks ago on my main city water inlet. It's been cold so I've just been filling the fresh water tank and disconnecting to avoid a freeze.

It has seemed like it's been taking much longer than usual to fill the tank and I thought I might have a problem with my "tank fill/normal" valve.

The nights haven't been freezing this week so I hooked directly up to city water and, following an inital rush of water to faucets inside the coach, it slows to a trickle. I've verified that there is 50lbs of water pressure at the inlet.

Before tearning into the plumbing bay to replace the valve, I removed the water filter cartridge and.... all pressure returned throughout the coach.

It seems obvious that I have a bad filter cartridge. Is it unusual to get a new cartridge that is bad or clogged? At least I didn't have to change the valve.

Rick
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Old 12-02-2010, 03:40 PM   #2
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When I had the same problem it was the because I was sold the wrong cartridge. When I took it to the dealer for some warranty work they replaced the filter with the correct one and all went back to normal.
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Old 12-02-2010, 03:41 PM   #3
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Rick,
You mentioned you removed the filter and the pressure returned to normal. Did you replace the filter and everything is normal??
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Old 12-02-2010, 04:06 PM   #4
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Quote:
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Rick,
You mentioned you removed the filter and the pressure returned to normal. Did you replace the filter and everything is normal??
Hey RJay... I did replace the filter and the restricted flow returned... so it is now removed.

Rick
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Old 12-02-2010, 04:33 PM   #5
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We have a filter that filters out everything (down to 0.5 micron) and it drops our water pressure down to a dribble. I want to keep the filters we use so (on the bus conversion) we will install a float valve that will shut the water off when the tank is full. Then we will always pump out of the holding tank. It has taken us a while to find a float valve that we can use in the manner that we need to but we finally did. It was the only workaround that we have come up with and we think it will be a good one. Only problem will be filling while traveling. It would take a while to fill at a rest stop (currently takes 25 minutes to fill a 25 gal tank with the filter installed). But I've not had people standing in line waiting on me either. So it may not be a problem. We like to pull into a campground every few days. Then we would just fill overnight.
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Old 12-02-2010, 05:55 PM   #6
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When we experienced a restricted filter, it was traced to the campgrounds well water sediment

Fred.
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Old 12-03-2010, 08:58 PM   #7
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Some filter cartridges have plastic plugs in the ends. One could be stuck in the inlet or outlet. Also could it be possible that the water in the filter might be frozen? Have you tried another cartridge to see if you get the same results? The filter could plug quickly if you had a large amount of sediment flow into it but that amount sediment would probably be obvious once you ran the water without the filter. If it is none of the above, the filter could be defective.

I use only a sediment filter with a clear filter housing going into the coach so there is always chlorine in the fresh water talk and use KDF carbon filters at the sinks to remove the chlorine.

Good luck!
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Old 12-04-2010, 12:18 AM   #8
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Filter placement may help.

Ours does not have any filter on the inlet, it has a filter that is inline with the instant hot water and cold water on the sink so the drinking water is filtered as well as the cartridge.

Still need to add the filter for ice maker.

May build a "filling filter" that goes inline with fill hose that has moderate screen.

The idea here is to keep out the dirt and crud, no need to charcoal filter all of the water, a waste of expensive media and reduces the flow.

Having the charcoal filter only on the drinking sources makes for great tasting water and no problems with water flow.

If your filter is built in and at the fill point, then investigate the plumbing under the kitchen sink, good charcoal filters are less than $50.00 with extra cartridges and fittings and easy to install.

THe existing filter can have a different cartridge used to block sediment and not reduce the flow.
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Old 12-04-2010, 12:41 AM   #9
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are you sure its the filter and not your "pressure regulator" everytime i go to a campground i use my regulator.. then i come to the farm and i get a trickle... unhook the regulator and pressure is normal again...

mines old, but i'm just thinking "outside the box" sometimes it works lol
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Old 12-04-2010, 10:49 AM   #10
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Thanks to all for the great ideas. I'm pretty sure my question has been answered. Just to summarize:

*The flow problem was definitely traced to the charcoal filter which is built in OEM equipment at the city fill for my coach. The water wasn't frozen. When I removed the cartridge the flow returned to normal in the coach. When I reinstalled it, the flow stopped.

*I don't use a flow restrictor. I have a Watts residential pressure regulator with a pressure gauge on inlet and outlet. I can see 40lbs of pressure going in to the coach.

*In addition to the main filter, I have an under sink charcoal filter which feeds the kitchen drinking water faucet, the instant hot water for sink and my ice maker.

*I have purchased a new "coarse" sediment filter (5 micron) and will install it today. I expect the flow will be fine with this one but will report back.

I think I either got a faulty cartridge or have the same situation as Lorna. I may have purchased an extra fine (.5 micron) filter by mistake and this restricted flow could be the nature of that beast.

Thanks again all.

rick
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Old 12-07-2010, 10:32 AM   #11
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As expected, when I installed the new (cheap) 5 micron filter water flow seemed to be uneffected and all is well.

Thanks for all of the help!

Rick
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Old 12-08-2010, 10:26 AM   #12
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Rick,

I use a 1 micron (nominal) sediment filter prior to my 1 micron carbon block filter. Used along with my Watts regulator I have no flow restrictions unless the sediment filter starts to plug up. Of course that just means it is doing it's job. I get all my stuff from The Water Filter Store on-line.

Additionally, I have the undercounter filter for drinking and cooking water, plus I now have a refrigerator filter in my newly installed residential refrigerator which is in-line after the undercounter filter.

If nothing else the ice should be reasonably clean!
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Old 12-08-2010, 10:53 AM   #13
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Great link Terry... thanks much!
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