
Operation and Maintenance Instruction Manual
12 P/N 2100-9001 Rev 3
(A) (B)
Figure 4-7. Sample Test Results for Pure Blend Refrigerant with Correct Component Ratios
4.9. Pure Blends with Incorrect Component Ratios
The Pur•Chek™ Pro has the ability to detect blend ratios that have been altered by contamination. As
stated above, the blends that can be identified and analyzed are as follows.
• R134A
• R22
• HC (hydrocarbons)
• R404A
• R407C
• R410A
If one of the multi-component refrigerant blends has incorrect component ratios, it will be displayed as
shown in Figure 4-8 A. Press MORE To see the component concentrations. See Figure 4-8 B. Refer to
section 4.11 Printing the Test Results and Channel Data on page 13 to print.
(A) (B)
Figure 4-8. Sample Test Results for Pure Blend Refrigerant with Incorrect Component Ratios
4.10. Measuring Air
The Pur•Chek™ Pro offers the ability to measure the presence of air independently during every
test. The built in oxygen sensor will display the percentage of air in all identified or identified and
analyzed refrigerants if there is air in a system or cylinder.
Figure 4-9 A shows how the LCD will
display air if detected. Pressing ‘MORE’ will display the purity of the refrigerants which were
detected (
Figure 4-9 B).
(A) (B)
Figure 4-9. Sample Test Results for Air Measurements
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