Section 4 Refrigeration
4-14
Leak Detection
R-134a system leaks can be pinpointed by means of an
electronic leak detector or by bubble solution.
Electronic leak detectors for R-134a service are currently
available from several manufacturers. The least
expensive models are non-selective detectors that will
detect any type of emission or vapor present, regardless
of its chemical composition. Some non-selective
detectors designed for use with R-12 may have a much
lower sensitivity when used with R-134a. However, newly
designed detectors with good R-134a sensitivity are now
available. Be sure to consult with the manufacturer
before selecting or using a non-selective detector with
R-134a.
Halogen-specific detectors use a specialized sensor that
allows detection of compounds containing chlorine,
fluorine, bromine, and iodine without being activated
by other species. The major advantage of this type
of detector is a reduction in the number of “nuisance
alarms”. Halogen-specific detectors are generally more
expensive than non-selective detectors but feature
higher sensitivity.
R-134a properties
The properties of R-134a are very similar to those of
R-12. The principal data for the two refrigerants are
shown in the chart below.
Summary of Contents for FPUH17D7KF All Freezer Professional Series
Page 2: ......
Page 20: ...Section 2 Installation Information 2 12 Figure 2 20 Figure 2 21 ...
Page 21: ...Section 2 Installation Information 2 13 Figure 2 22 Figure 2 23 ...
Page 24: ...Section 2 Installation Information 2 16 Notes ...
Page 26: ...Section 3 Electronic Control 3 2 Notes ...
Page 41: ...Section 4 Refrigeration 4 15 HFC 134a CFC 12 Pressure Temperature Chart ...
Page 44: ...Section 4 Refrigeration 4 18 Notes ...
Page 68: ...Section 6 Parts List 6 2 All Refrigerator Cabinet Exploded View And Parts List ...
Page 70: ...Section 6 Parts List 6 4 All Refrigerator Sealed System Exploded View And Parts List ...
Page 72: ...Section 6 Parts List 6 6 All Freezer Door Exploded View And Parts List ...
Page 74: ...Section 6 Parts List 6 8 All Freezer Cabinet Exploded View And Parts List ...
Page 76: ...Section 6 Parts List 6 10 All Freezer Sealed System Exploded View And Parts List ...
Page 78: ...Section 6 Parts List 6 12 Notes ...
Page 82: ...Section 7 Troubleshooting 7 4 Notes ...
Page 83: ...Section 8 Wiring Diagram 8 1 All Refrigerator Wiring Diagram ...
Page 84: ...8 2 Section 8 Wiring Diagram All Freezer Wiring Diagram ...