Emerson ALCO CONTROLS FDB Technical Bulletin

FDB Filter Drier
Technical Bulletin
EMERSON FDB is a hermetic filter-drier in compacted bead style
for use on liquid line.

Features

Compacted bead style
•
Hermetic design.
•
Rugged steel shells
•
Corrosion resistant epoxy paint
•
Cushioned flow for non-turbulent performance
•
Filtration first for more effective use of surface area of desiccant
•
High water and acid adsorption capacity
•
High filtration capacity / efficiency
•

Construction / Function

Liquid line filter-driers are often referred to as system protectors
because they remove harmful elements from the circulating
refrigerants and lubricants before serious damage results.
No matter how many precautions are taken during assembly and
installation or servicing of a system, contaminants can find
(generate) their way into the system. These contaminants can be
solid, such as metal swarf, flux, dust and dirt. Other equally
menacing contaminants are soluble, such as water, acid and wax.
FDB filter-driers incorporate a desiccant specially formulated and
blended from molecular sieves and activated alumina for
maximum moisture and acid removal capability.
The active drying material is in the form of beads or pellets. No
binding material is used to hold beads together, but rather
compacting is performed through some type of mechanical
pressure e.g. spring. On the upstream side of the compacted
beads is a filter network which cushions flow and traps the solid
contaminants.

Technical Data

Max. allowable pressure PS 45 bar
Test pressure PT
Liquid Temperature
Refrigerant
Fluid Group
List of released refrigerants
Fluid group II (A1):
Fluid group I (A2L):
Note: Fluid group classification
according to PED 2014/68/EU.
www.climate.emerson.com/en-gb
47.3 bar
-45...+65°C
I + II
R134a, R404A, R407C, R410A,
R448A, R449A, R450A, R452A,
R507, R513A
R32, R452B, R454B, R454A,
R454C, R455A, R1234ze,
R1234yf
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Material shell
Paint
Connections
Protection
Package
Marking
FDB
Steel
Epoxy Powder paint
Solder Copper, ODF
Flare Burnished, SAE
500+ Hours salt spray test
Individual packaged
(A2L pending)
(acc. PED, V > 1 liter),