Airwell SWS 1602 HFС 407C [27/82] General description
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Airwell SWS 1602 HFС 407C [27/82] General description

Airwell SWS 1202 HFС 407C [27/82] General description
Page 26
General Description
7.2 General specifications
The SWS/SWR chillers are supplied complete and
fitted with refrigerant connection pipes and internal
wiring.
The refrigeration circuit of each SWS unit is subject-
ed to a pressure test, drained, vacuumised, dehy-
drated and filled with refrigerant, and includes the
necessary oil. On completion of the assembly, each
unit is subjected to final testing and checking of the
proper operation of all refrigeration circuits.
The base and the frame of every single unit are
made of sturdy galvanised steel and fastened by
stainless steel screws and bolts. Both the compressor
and the components of the refrigerant circuit are
lodged in a compartment coated with soundproofing
material (ELN versions), whose sides can be easily
removed to provide access.
7 GENERAL DESCRIPTION
7.1 Introduction
The water chillers with two refrigeration circuits of
the SWS series have been designed for indoor instal-
lation.
For heat dissipation purposes, the SWS units must be
coupled to a cooling tower, or use well water.
The series includes the following versions:
Options Description
SWS/D
The galvanised steel sections are oven-painted with
white enamel (RAL 9001).
7.3 Compressors
The SWS/SWR units feature semi-hermetic screw
compressors. The control of the compressor’s capaci-
ty is managed by solenoid capacity control valves,
that are controlled by the microprocessor of the ap-
pliance; every compressor has 3 working steps:
25% (start only), 50%, 75%, 100%.
The compressors’ motors are cooled by the refriger-
ant gas and are provided, in each phase, by a built-
in temperature-sensitive solid state device for over-
load protection.
The motor’s terminals are weatherproof, according
to standard IP-54.
For each version, the corresponding moto-evaporating version is available: SWR
Available options:
The thermal recovery is ensured by a de-superheater mounted on the compressor’s
delivery line
COMPRESSOR START-UP
PART - WINDING STAR - TRIANGLE
SWS/SWR 1002 - 1902 R407C SWS/SWR 2202 - 4402 R407C
SWS/SWR 1602 - 2202 R134a SWS/SWR 2212 - 4802 R134a
Version Description
SWS standard version (STD)
SWS low noise version (LN)
SWS extra low noise version (ELN)
Chillers with water condensation, working with
R407C and R134a refrigerants (with R22 refrigerant
on request for extra-european countries)
Manuale SWS-SWR EN1.qxp 05/11/06 14:18 Pagina 26

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