Repair Section
67
6.14 Inspection of Refrigeration System
• In most cases, the probable cause for insufficient cooling is a clog in the system, leakage or an
incorrect amount of refrigerant. In such cases, inspect the system according to the following
procedure.
(1) Clogged refrigeration system
• Check the component parts of the refrigeration system, including piping that could be clogged
with refrigerant. If clogged with refrigerant, only the clogged part is partially frosted. If this occurs,
replace the part in question.
(2) Refrigerant leak
• Carefully check all connections, and each component for leaks whenever the refrigeration
system is installed or repaired. Use an electronic gas leak tester to inspect the system. (See
page 78 to 87.)
(3) Insufficient refrigerant
• When the unit is not producing sufficient cooling, follow the troubleshooting chart on page 55 to
confirm the cause of the problem. Then, charge the system with the refrigerant to the specified
amount as indicated on page 86.
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