MovinCool CM12 Service Manual - Manual (Page 46)

Repair Section
46
7.9 Inspection of Wiring Connection
• Refer to the wiring diagrams on page 21 and check the connection of each wire.
CAUTION
Secure the wires using clamps to prevent contact with the edges of the structure, etc. Secure the
wires in the same position as prior to removal.
7.10 Refrigeration System Inspection
• In most cases, the probable cause for insufficient cooling is a clogged 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. In such
cases, change 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 59 to 70.)
(3) Insufficient refrigerant
• When the unit is not producing sufficient cooling, follow the troubleshooting chart on page 41 to
confirm the cause of the problem. Then, charge the system with the refrigerant to the specified
amount as indicated on page 69.