Guidelines for Using R441A/HCR188C and Derivatives
in Refrigeration and Air Conditioning
Systems
R441A/HCR188C is a hydrocarbon-based refrigerant that does
not deplete our Earth's protective ozone layer as fluorocarbon refrigerants like
R-12 and R-22 do, or effect global warming like R134a.
Inhalation of chlorofluorocarbons and hydro
chlorofluorocarbon (CFCs and HCFC) refrigerants can cause oxygen deprivation,
with serious health consequences. R441A/HCR188C was developed to replace the
fluorocarbon refrigerants. R441A/HCR188C is compatible with proprietary seals,
gaskets and most lubricants in existing refrigeration systems.
R441A/HCR188C, like any other hydrocarbon product, is
flammable and must be used only by HVAC personnel trained and certified in the
specific safe handling procedures for refrigerant gases. Fully trained and
EPA-certified HVAC personnel following the specified precautions will find that
HCR188C can be easily and safely charged into existing HVAC systems.
A retro safety valve was designed for use with R441A/HCR188C,
for automobiles, but can be used with a split unit air conditioner. The valve is
spring loaded and has the EPA assigned fitting sizes that have been approved by
the EPA. The function of the valve is to shut off the refrigerant flow when the
pressure drops below a certain level. When activated the remaining refrigerant
in the system cannot leak into the passenger compartment of an automobile or
into a building of a split unit air conditioner. Valves are placed close to the
firewall on automobiles and before air conditioning lines enter a building.
View
The Guideline for Usage Documentation
View
The Instructions for Safe Handling Documentation
Although R441A/HCR188C is flammable, very little is
used to charge a refrigeration system; usually only one-fourth the charge
of fluorocarbon refridgerants!
Workplace safety is no accident. It does take an effort to learn and follow
new safety procedures and to make them a part of every refrigerant retrofit
job. The user alone has the responsibility to follow the R441A/HCR188C safe
handling procedures to uphold the high safety standards of the HVAC industry.
Documents:
441 tips.pdf
Material Safety Data Sheets
R441A/HCR188C1 COMSTAR.pdf
R443A/HCR188C2.pdf
Safety Valve SV001A Specification Sheet