Refrigerant Filter Dryer Exposed

Displaying the insides of a very small Refrigerant filter-dryer canister, the desiccant is called Zeolite, and is made up of Activated Alumina, Silica Gel, Calcium Chloride and Calcium oxide.

Although a filter dryer won't remove all of them, things like Oxygen, moisture, solder flux, Armaflex dust and glue's will go to work, with the heat, pressure, oil, metals and refrigerant to turn a air conditioner into a big run-away chemistry set! eating lines, motor insulation and valve components!

Keep the HVAC system clean!

Category:

Science & Technology

Tags:

• R22
• R410A
• filter
• Dryer
• Desiccant
• Canister
• Air
• Conditioner
• Gas
• Charge
• Compressor
• Reverse
• Cycle
• Liquid
• line
• Danfoss
• AC
• Acid
• Moisture
• Hydrofluoric
• hydrochloric
• Motor
• Electric
• burnout
• Lathe
• south
• bend

[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

[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.

[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

[44209david]

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

[joeylawn36111]

@Aussie50 thanks for the info.

[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.

[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

[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 :(