tech level Filter Dries
CONSTRUCTION
The
external casing is manufactured entirely from steel EN 10130 – DC04,
while the connections are made from copper‑plated steel. The body and
head (and the bottom section on larger models) are assembled using MIG/TIG
welding, forming a robust, seamless structure. The outer shell is coated
with over 70 μm of powder paint, ensuring full protection against oxidation, and the connections are copper‑plated
for additional corrosion resistance.
In this
type of filter‑drier, the desiccant charge is non‑replaceable and
consists of a single Solid Core (SC) made of molecular sieve beads,
possibly combined with other elements. This configuration also provides a high
level of mechanical filtration, thanks to a special synthetic felt
designed to minimize resistance to fluid flow.
The product
range includes versions with SAE flare threaded connections, ORFS,
and solder connections.
In the SC
version, the desiccant charge is composed of 100% 3Å molecular sieves.
By adding the suffix “-A” to the product code (SCA PLUS), it is
possible to request a filter‑drier containing a desiccant blend of 80% 3Å
molecular sieves and 20% activated alumina, providing acid‑neutralizing
capability.
INSTALLATION
Installing
the unit is essential to protect the system from moisture, acids, and solid
contaminants, which may reduce overall efficiency and cause severe damage
to the compressor and other system components.
The filter
can be mounted vertically or horizontally, although a vertical
orientation with the flow directed downward is recommended to prevent oil
or sludge accumulation. In all cases, the flow direction must correspond
to the arrow shown on the product label.
APPLICATION
All
hermetic SC filter‑driers across the product lines are classified as “Vessels”
under PED Directive 2014/68/EU, Article 2, paragraph 2, and fall within
the scope of Article 4, paragraph 1 of the same Directive.
The intended
refrigerants vary depending on the specific product line, and this also
determines the hazard category in accordance with the PED Directive.
Under
Directive 2014/68/EU, the hazard classification of the product is based on: •
the type of fluid used, • the intrinsic dimensions (internal volume), • the
maximum allowable working pressure (PS).
Refer to
the tables below for the hazard category of each specific model; the
classification may differ between the PLUS and HC lines.
For
applications involving fluids other than those explicitly listed, please
contact GMC® Refrigerazione.
