yellow jacket 37865, Руководство по эксплуатации

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1
I
NTRODUCTION AND
O
VERVIEW
1.1 General
Contamination of refrigerants either in storage cylinders or vehicle
air conditioning systems can lead to component corrosion, elevated
head pressures and system failures when utilized by unsuspecting
technicians. The ability of the technician to determine refrigerant
type and purity is severely hampered by the presence of air when
attempting
to utilize temperature-pressure relations. The
development of various substitute refrigerants further complicates
the ability of a technician to identify refrigerant purity based
upon temperature-pressure relationships. The substitute refrigerant
blends can also introduce a flammability hazard to the technician
and the ultimate end user of the vehicle air conditioning system.
This R134a and R1234yf Refrigerant Identifier will provide a fast,
easy and accurate means to determine refrigerant purity in
refrigerant
storage cylinders or directly in vehicle air
conditioning systems. The instrument utilizes non-dispersive
infrared (NDIR) technology to determine the weight concentration of
R1234yf or R134a refrigerant. Acceptable refrigerant purity as it
relates to this instrument, has been defined by the SAE as a
refrigerant mixture that contains 98.0%, or greater of R1234yf or
R134a, by weight.
The instrument is supplied complete with an R1234yf sample hose, and
R134a sample hose, a 12 VDC power supply and all required plumbing
housed within a rugged, portable, storage case.
Sample gas is admitted into the instrument through the supplied
sample hose and presented to the sensing device. The instrument
provides the user with a digital display of refrigerant purity. The
instrument only considers the weights of the refrigerant and
contaminates in the total mixture. Air is measured, and displayed,
separately. Other contents such as refrigerant oil and dye are not
considered contaminants.
The instrument interfaces with the user with an LCD graphic display,
status indicator lamps, push button communication switches and an
alarm horn. Alarm indications are provided to alert of instrument
fault conditions or contaminated refrigerant presence.