Refrigerant Filter Dryer Exposed

[44209david]

Hey i knotice you got a High current low voltage transformer there from a converted microwave trasnformer !

[joeylawn36111]

What I've always wondered is what happens when the filter becomes saturated with the contaminants it's trying to filter....

[Aussie50]

@joeylawn36111 you will get a pressure drop across the drier as it packs up with contaminants, likewise if it has had too much moisture in it, any remaining moisture will continue to circulate with the refrigerant

[joeylawn36111]

@Aussie50 thanks for the info.

[joey8067]

silica sand

[tubeadelic]

Case label put on wrong way?

[richardc1983]

@aussie50 - apparently my engineer says it's doesn't have a filter dryer. It just has strainers so he's gonna blast the outdoor unit through with nitrogen to clear anything out. Hope this sorts my issues out with it :(

[richardc1983]

Hi there

Would you suggest that I get the filter drier replaced in my LG multisplit air con system. The refrigerant has been taken out several times and I have had a blocked EEV as well but the engineer just swapped it over onto an unused port.

[Aussie50]

@richardc1983 yeah I would change it if its been moved around and recovered a bit.. like the EEV it will get plugged up and absorb moisture.

[im415again]

@LivinThatHighLife rule of thumb is, If you have to open the system you should always evacuate it first then replace all filter driers after fixing components.

[slipshodcoqbgg]

Energy sources without the need for fuel or energy input exist ,But the Establishment doesn't want ppl to know this,Go to LT-MAGNET-MOTORdotCOM and get the blueprints for a genuine magnet motor ,Let the revolution begin!

[roguemtber]

the inner tunnel side at exit port is correct. This spreads the initial filter entry, then accumulates it on exit for better flow

[pclle]

now you have a nice little funnel..maybe you can use that synthetic cloth filter to filter things too

[1006xrhonda]

i seen these cut open in college but also working i used to cut open the ones on bottle coolers but i recently been morking on pack systems in supermarkets and the driers are HUGE

[Aussie50]

@LivinThatHighLife unless the condensor has one already fitted inside I would definitely replace it!, any time the system is opened and worked on, replace the filter-dryer!

[kingkongokkk]

woooow you are "Einstein".....

[bestbets1]

Most older refrigerators have these just before the capillary tube, unless thats part of the cappilary

[Aussie50]

@bestbets1 yeah I've seen the copper ones on domestic fridges, usually filled wiht silica gell beads

[overscore23]

How would installing a one way filter dryer on a heatpump actually contaminate a system ? assuming nothing woult be forced the wrong way blowing debris into the lineset ?

[skonkfactory]

The refrigerant flows around the outside of the charge, and flows out through the indentation in the centre; this way, the dirty or wet refrigerant has a larger surface area to adsorb onto. By having it "reversed" like this, the dessicator will last longer before the surface clogs.

[blsixty9]

How many Filter Dryers have you cut open?

[Aussie50]

I've done a few in the past, but only this one on video

[carboumentliagaizka]

Thanks man nice video ...... It looks like a Danfoss DCL xx This is the most common filters we use here in Spain (At least in the north). And again thanks for the video. BB.

[krisachar]

Great work ! And thanks for the visuals...I really enjoyed seeing your work.

Love,

kris.

[aldiggity]

By the way, the core was assembled correctly. The filter drier is designed so that liquid flow velocity is suitably low; the pressure drop is minimal; and the moisture adsorption is optimal.

[Aussie50]

yeah I was reading older material on filter-dryers that dosn't apply to these ones.

I have a few of these and they are very good!.

[aldiggity]

Some say that Danfoss filter driers are the best. It would be interesting if you could cut open some other filter driers to compare.

[fanlimits]

get yourself oxy acetylene torch you rookie limey

[aldiggity]

You should be careful handling the core with your bare hands as it can get really hot during moisture adsorption, which is an exothermic reaction. You can try running it under some water and feel how hot it gets.

[Aussie50]

I tried dunking it in water but didn't notice any temp change or excessive absorption. its only designed to absorb so many PPM anyway.

[aldiggity]

The core could already be saturated. A core that size will have capacity less than 10 grams of moisture. Note that the process is adsorption (with a "d") not absorption (with a "b"). Adsorption is a physical process whereas absorption is a more complex chemical process. During adsorption in the filter drier moisture is drawn into the small pores of the molecular sieve via capillary action and held.

[MRGTRMAN69]

@aldiggity Hey you sound like you know what your talking about. I was wondering about the (48) series drier cores. They have an an opening at one end and at the other end the opening increases in diameter. Normally the liquid enters from the side so which end should be on the liquid outlet the small diameter end or the larger diameter end?

I was taught that it should be the larger diameter end but have seen it the other way around.....

Cheers

[aldiggity]

@MRGTRMAN69 The end with the larger diameter should be at the outlet. The design is so that liquid flow velocity is suitably low and the pressure drop minimal.

[aldiggity]

Looks like you got your hands on a Danfoss DML filter drier. The core is composed of 100% Molecular Sieve, which is optimized for moisture adsorption. The DCL type is the one that also has acid adsorption as the core is composed of 80% Molecular Sieve and 20% Activated Alumina. Activated Alumina will contribute to the moisture adsorption but its main function is for acid.

[Aussie50]

Good info! thanks!

[captainjunket]

there is more surface area to trap particals and moisture given the flow direction is correct on this Danfoss drier.you dont feed filters from the inside were the surface is smallest.

[PutSome5tankOnIt]

It's fascinating to see a liquid line drier split and exposed. I've cut a few of them open and found the dessicant pellets to be in good condition. The fine internal mesh screens were actually obstructed with the oxidation left over from the brazing process.

Good advice to all: Remove liquid line driers that are installed within outdoor units whenever the opportunity arises. Reinstall the replacement drier outside of the outdoor unit.

Good video. Very informative.

[mrcrtking]

I cut the dryer open off an old industrial supermarket freezer, millions of little grey balls, I held and squeezed half the contents of the dryer in my hand and my god did my hand get warm, when I let go into bin my hand was very dry too.

[V8Jagnut]

good vid. put the charge in a bucket of water.lol new things are crap.

[douro20]

It's very unlikely that would had moved past QC at Danfoss if it was assembled with the molecular sieve put in backwards...the Danish are very serious about quality control. I'd imagine they passed that through x-ray or NMRI before it left the factory just to make sure.

[Aussie50]

These ones are actually made in Mexico, I'm not sure if the QC is as high as it is at the Denmark or Germany facilities

[crob227]

The older ones i have seen rusted falling apart are filled with like b-b's, have you ever seen them?

[douro20]

More likely to be catalyst pellets.

[Aussie50]

yes I have!, looks like silica gel beads to me. apparently they can break down and cause blockages in the system too?

[crob227]

man thats great to know,m do you know if they still make them, so i can be sure not to install that specific brand/type no more.

thanks for the info and the video.

[Aussie50]

I don't think their made anymore and I'm not sure on what brands did make them, but I just found out the blocking problem can be avoided by mounting it horizontally. it was because of the beads sitting in the bottom and bouncing on any impulses of gas that caused them to break up

[NOBOX7]

great vid ,wow thats a nice way to cut things open,dam i wish i had a lath

hay bro you no i make about 680$ a week

i could pay you to build some parts for me

ill pay you 20 $ an hour ,and of course i would send the money and the plans at the same time ,i trust you bro.

any way i wonder what chemical that is

and also that looks like a good flash back arestor,of coars you would have to burn of the fiber ,unles its kevlarian,lol non flamable i mean

[Aussie50]

it is a handy tool for little jobs like that!, but I'm afraid neither I nor the machine are up to scratch for custom parts machining so I can't really help you there :( unlesss its a really simple bushing or flange, the spindle runout is too bad for fine work.