Advantage Maximum MG Series - Page 65

update 08/02/2021
Maximum Series Portable Chiller : Air & Water-Cooled : MG Series Instrument
Page: 65
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
Email: service@AdvantageEngineering.com
• If the color of the element is chartreuse or
yellow, the system has been contaminated
withmoisture.Insuchcase,thelter-drier
must be replaced. The replacement of the
lter-driermustbecompletedbyaqualied
refrigerant service technician.
F. EXPANSION VALVE: The expansion valve throttles
owofrefrigerantliquidintotheevaporatorandcreates
a pressure drop in the refrigerant system that allows
the liquid refrigerant to “boil off” inside the evaporator.
G. EVAPORATOR: The evaporator is a brazed plate
heat exchanger where the refrigerant liquid is allowed
to evaporate (boil off) to absorb heat (BTU) from the
processuid.Astheheatisabsorbed,theprocessuid
ischilled(gure6.2G).
H. CAPACITY CONTROL: The chiller is equipped with a
capacity control feature. The capacity control feature
matches the chiller capacity to the cooling load to
provide temperature control and to prevent short
cycling of the compressor. Units with digital scroll
compressors (MGD) use a solenoid valve to unload
the compressor to as low as about 20% capacity.
Units without a digital scroll compressor use a hot gas
bypass solenoid valve to reduce the chiller capacity to
about 50%.
I. Liquid receiver: (optional feature) located after the
condenser, this component receives and stores liquid
refrigerant leaving the condenser.
K. Service valves: These valves are located throughout
thesystem.Onlyaqualiedrefrigerationservice
technician shall operate these valves.
6.3 UNIT OPTIONS
A. LOW FLOW BYPASS: If your process will experience
lowerthandesignowratesorintermittentow,alow
owbypassvalvewillberequired.
B. OVERHEAD PIPING KIT: Toavoidreservoiroverow
during shut down periods from overhead piping,
Advantage recommends the installation of an overhead
piping kit. The overhead piping kit consists of a full
line size solenoid valve in the “from process” line that
is interlocked with the pump and a check valve (single
direction valve) in the “to process” line.
Typical Expansion Valve
Typical Refrigerant Sight Glass
Typical Brazed Plate Evaporator
Typical optional automatic
lowowbypassvalve.
Typical overhead piping kit.
Shown with optional process
line shut off valves. Process
line shut off valves are also
shown in this photo.