2.3
INTERPRETING THE RESULTS
| TESTING FOR ACIDIC "Refrigerant Gas" |
|
| Reaction: | BLUE
 YELLOW/WHITEPositive test will yield yellow and/or white crystals. |
| Sensitivity: | 0.10 ppm (0.00001%). |
| Accuracy: |  10%
from cylinder gas, 15% from a pressure equalized
system. Invalid results can occur from
"running" systems. |
| Standard: | ARI recommends that the total acid content be less than 1.0 ppm for refrigerant gas. (Midpoint of detector tube scale). |
| False Reactions: | NONE. |
| Correlations: | The acid present in the oil is not directly indicated. If the test is negative, the system oil may be neutral to slightly acidic. If the tube registers 'any' acid reading, the oil is usually "highly acidic". |
| MOISTURE ANALYSIS "Refrigerant Gas" |
|
| Reaction: | LT.
BROWN OR PINK
GRAPE/BLUEBERRY.
Screen Refrigerant Gas for Acid first. Moisture test is
only valid if acid content is below 1.0 ppm. Quickly
remove tube from test holder and allow 2-3 minutes for
color to fully develop, then read tube against dark
background. |
| Sensitivity: | 1.0 ppm (0.0001%). |
| Accuracy: | 5% from
cylinder gas, 10% from a pressure equalized system, +25%
from a "running" system. Invalid results can
occur from "running" system. |
| Standard: | ARI has established a 10 ppm limit for reusable refrigerant. |
| False Reactions: | From atmospheric moisture. Be sure to purge extension hose and the metering body inlet fitting with the refrigerant gas being tested. Highly acidic refrigerant gas voids the test. |
| Correlations: | The amount of moisture present in the oil can be 5 to 10 times greater. |
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