Omcan IC-CN-0040, Инструкция по эксплуатации

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Troubleshooting
N5 Is there an object in the propeller? Remove the object Replace the pump
N6 Is the noise from the compressor? Replace the compressor
ADVANCED COMPONENT TROUBLESHOOTING TECHNIQUES
Refrigerant Cycle and Components
Before diagnosing the refrigeration system, it is very important that the refrigeration charge is correct.
Whenever the refrigeration system has been opened, the filter drier must be replaced and the proper
refrigerant charge must be weighed in.
Refrigerant Pressures
The suction pressure at the beginning of the freeze cycle can vary +/10 psi (.7 bar) depending on operating
conditions. Pressures less than this may indicate an undercharge. The discharge pressure on air cooled units
will vary with ambient conditions. Refrigerant in a gas state is pumped throughout the refrigeration system by
a hermetic compressor to the condenser. Heat is removed from the refrigerant either by forced air movement
through an air cooled condenser or transferring heat from the refrigerant to water through a water cooled
condenser. The refrigerant changes to a liquid when cooled. The refrigerant in a liquid state passes through a
filter drier. The filter drier traps small amounts of moisture and foreign particles from the system. The filter drier
must be replaced whenever the refrigeration system is opened or if the refrigerant has been completely lost.
Compressor
The compressor runs during the entire cycle. If the valves in the compressor are damaged, the compressor
will be unable to pump refrigerant efficiently. Damaged valves may be the result of another problem in the
refrigeration system. When a compressor is replaced it is important that the refrigeration charge be weighed
in and the system checked for proper operation to prevent a repeat failure. An inefficient compressor will
usually have a higher than normal suction pressure at the end of the cycle. The freeze cycle will be longer
than normal and/or the harvest cycle may be excessively long. Check the compressor’s amps 5 minutes into
the freeze cycle. If the amps is less than 70% of rated full amount, the compressor may be inefficient. These
symptoms may also be caused by other problems, therefore it is important to use the troubleshooting charts
when diagnosing a problem. The air condenser is located in the back of the cabinet. Air is pulled through the
condenser by a fan motor and released through the right hand side panel. Under the counter models intake
and discharge air through the front panel. Do not block airflow as it will cause premature failure of the machine
and will void the warranty.
Compressor and Start Components
The compressor should run during the entire cycle. If the machine is in the ON position but the compressor is
not running, check the compressor contactor to see if it is connected properly. If the contactor is not connected,
the problem is not with the compressor or the compressor start components. If the contactor is engaged and
there is correct voltage through the contactor, there could be a problem with one of the starting components or
the compressor. It is recommended that the compressor starting components be replaced when replacing the