Robinair 16900 Refrigerant Identifier - Manual (Page 14)

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7. The results of the analysis are now presented to the user on the
instrument display.
PASS: Displayed when a sample is detected to have 98% or
greater of R-12 or R-134a by weight. The refrigerant type and air
concentration are also displayed.
FAIL: Displayed when a sample is detected to be a blend of
R-12 and R-134a refrigerants with neither R-12 or R-134a having
98% or greater concentration. The weight percentages of R-12,
R-134a, and air are displayed.
FAIL CONTAMINATED: Displayed when unknown refrigerant
types, such as R-22 or hydrocarbons, have been detected
in concentrations of 4% or greater by weight. No weight
concentrations of refrigerants or air are provided in this mode.
NO REFRIGERANT—CHK HOSE CONN: Displayed when a
sample is detected containing 90% or greater air by weight. This
condition usually occurs when the R-134a sample hose coupler has
not been opened, the sample hose has not been connected to the
sample source, or if there is no refrigerant present in the sample
source.
8. The instrument keeps the analysis results on the display until the
user presses the A button. Once the A button is pressed, follow the
directions on the screen.
9. If another sample run is desired, follow instructions from Step 5.
If another sample run is not desired, disconnect the power harness
from the vehicle or wall outlet to the end the routine.
Operating Procedure