Tip & How-To about Culligan Under Sink Water Filter

Removing Whole House Filters

Frequently whole house filters can be very difficult to remove. The canisters become almost impossible to loosen, even after pressing the pressure relief valve and using a housing wrench. The most common reasons for this are the housing was put back on with the housing wrench, debris in the housing threads and a bad pressure relief valve.

How to remove a stuck filter housing.
1. Turn off the incoming water.
2. By-Pass the Softener
3. Go to the nearest cold water faucet, open it and let the water run until pressure drops significantly.
4. Turn the water off at outlet of filter (If housing has shutoff on top off head, turn this off now).
5. Press and hold the pressure relief button to relieve pressure further.
6. Use filter wrench to unscrew housing (If it still won't loosen repeat steps 2-5).
7. After removing, clean housing thoroughly, make sure threads are clean on filter bowl and housing head. Lubricate threads of housing and head with plumbers faucet lube or silicone.
8. Clean and lubricate the O-Ring (replace the O-ring every couple years or if housing leaks after screwing back on). It helps to flip the O-Ring over a couple times per year.
9. Replace the cartridge filter and screw the housing back on.
10. Turn the incoming water on slowly while holding the pressure relief button down until all air is purged.
11. Open outlet and let water run to cold water faucet until all air is purged.
12. Put softener back in service.

IMPORTANT! Only tighten the filter housing by HAND!
NEVER use the housing wrench to tighten the housing.

I hope these tips help you with the angst of removing stubborn filter housings.

RJ

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1 Answer

What's a canister filter?


The canister filters usually located on the floor below the tank. In canister filtering the water is pumped, at moderate pressure through a filter material. Canister filters are especially useful in aquaria with large or numerous messy eaters that generate a lot of waste. You'll have to clean the filters frequently for it to be effective.

Aug 09, 2012 | Fish

1 Answer

How do you change the filter to a culligan water softener


Here are instruction to remove the filter housing. This is from my tips posting. Culligan filter housings are just Pentek/Pentair water filter housings and these tips apply to virtually any filter housing.

Frequently whole house filters can be very difficult to remove. The canisters become almost impossible to loosen, even after pressing the pressure relief valve and using a housing wrench. The most common reasons for this are the housing was put back on with the housing wrench, debris in the housing threads and a bad pressure relief valve.
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How to remove a stuck filter housing.
1. Turn off the incoming water.
2. By-Pass the Softener
3. Go to the nearest cold water faucet, open it and let the water run until pressure drops significantly.
4. Turn the water off at outlet of filter (If housing has shutoff on top off head, turn this off now).
5. Press and hold the pressure relief button to relieve pressure further.
6. Use filter wrench to unscrew housing (If it still won't loosen repeat steps 2-5).
7. After removing, clean housing thoroughly, make sure threads are clean on filter bowl and housing head. Lubricate threads of housing and head with plumbers faucet lube or silicone.
8. Clean and lubricate the O-Ring (replace the O-ring every couple years or if housing leaks after screwing back on). It helps to flip the O-Ring over a couple times per year.
9. Replace the cartridge filter and screw the housing back on.
10. Turn the incoming water on slowly while holding the pressure relief button down until all air is purged.
11. Open outlet and let water run to cold water faucet until all air is purged.
12. Put softener back in service.

IMPORTANT! Only tighten the filter housing by HAND!
NEVER use the housing wrench to tighten the housing.

I hope these tips help you with the angst of removing stubborn filter housings.

RJ

Sep 29, 2011 | Culligan Sediment Water Filter

1 Answer

I am trying to replace the fuel filter on my 1999 Dodge Ram 24 valve Cummins engine. It looks like the lid of the housing canister for the fuel filter is fixed, so do I just remove the top center nut so the canister under the lid drops out with filter inside? I've done this before, but can't remember exactly how it works. Since the last time I did it I have had a low pressure light wired to it, so things look a bit different to me on top of this canister. I know about bleeding the air out through the top when the new filter is in place; I just need to get to the old filter. Thanks.


You are correct. The nut on top of the canister is loosened and the canister drops down. First - disconnect the electrical pigtail for the water sensor (at the bottom of the canister. Second - turn the water fuel bleed valve (yellow) near the top front of the canister to control spillage when you do remove the canister. The new filter comes with new O ring seals. Moisten with claean diesel and install. Add clean diesel to the newly installed filter and you will have an easier start up.

Nov 29, 2010 | 1999 Dodge Ram 2500 4WD

1 Answer

filter canister stuck


This is a very common problem. There are many reasons for this.

1. The canister was tightened with a wrench when re-installling. NEVER tighten a filter housing with a wrench after replacing the filter! Only by HAND! This is the main reason they are so hard to remove.
2. Filters swell in the housing.
3. The housing itself can swell.
4. The pressure relief button does not work properly.
5. Sediment buildup causes back pressure.
6. Sediment gets trapped on the threads from previous filter changes.
7. Off brand filters, especially those made overseas, frequently are not sized according to specs and can cause these problems. It is best to stay with a brand you know and has worked previously.
8. A bad o-ring will cause people to over tighten the canister because of leaks. Inspect and lubricate the o-ring (every filter change) and replace it yearly.

The best way to remove a stubborn filter canister is to shut off the incoming water, bypass the water softener, go to the nearest cold water faucet and let it run until the pressure dies off. Turn off the outlet on filter, hold the pressure relief button down on the housing (to relieve any more pressure) and remove the housing with the "appropriate" filter housing wrench. If it is still hard to remove repeat the process. After removing the canister, clean the head and canister threads with a clean cloth, lubricate them with silicone lube or plumbers water supply lubricant. It also helps to clean the inside of the housing with a 1/2 tsp of bleach, rinse and wipe it out thoroughly. This prevents any introduction of bacteria into the water system, which is also a very common problem and where "smells" can derive from.

RJ

Nov 15, 2010 | Culligan Under Sink Water Filter

2 Answers

changing the water filter in my Frigidaire


My Frigidaire PureSource water filter housing wouldn't unscrew either. Even with the supplied plastic "wrench" and later a cloth-covered pipe wrench, it wouldn't budge. Since both my icemaker and my door dispenser stopped dispensing water, and the filter housing in the fridge wouldn't budge, I suspected that the filter was full of frozen water. (Sometimes things on the top shelf of the fridge freeze, so it was obviously too cold.) I used a hair dryer on the water filter housing for a few minutes, and then the water filter unscrewed easily. Sure enough, the whole inside was a block of frozen water.

This would have been such a simple repair, HOWEVER unfortunately it turned out that I wrenched it too hard and broke the inlet valve on the housing. As soon as I thawed out the filter and reassembled, water was pouring out of the top. Took off the big cover at the top ceiling of the fridge and saw my problem.

It's only about a $25 part, but I'd advise that you be careful to only turn, without rocking back and forth, the housing when trying to unscrew. I guess I wiggled it back and forth too much and cracked it.

Aug 02, 2008 | Kenmore 22.0 cu. ft. Side-By-Side...

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