icetro IM Series, Руководство техника

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Refrigeration Components
HEADMASTER VALVE
Icetro remote systems require a headmaster valve with
special settings. Replace defective headmaster valves
only with (O.E.M.) Icetro replacement parts.
Refrigerant Charge Verification
The correct amount of refrigerant (name plate charge) is
required to operate correctly at all ambient conditions.
An ice machine with an overcharge or undercharge of
refrigerant may function properly at higher ambient
temperatures and fails at lower ambient temperatures.
Symptoms of incorrect refrigerant amount are:
•
Works during the day and malfunctions at night,
and/or fails whenever the outdoor temperature
drops.
Refrigerant loss and ambient temperature are directly
related to each other. As the ambient temperature drops,
more refrigerant is stored in the condenser.
When the refrigerant charge and ambient temperature
create an undercharge of refrigerant in the freeze cycle,
the receiver dip tube will lose it’s liquid seal. Without
liquid refrigerant to the TXV, the ice machine fails to make
a full sheet of ice in 65 minutes and error code #11
(Er_11) is displayed on the FND.
NOTE: When a head pressure control valve is being
replaced or refrigerant charge is suspected, verify the
refrigerant charge is correct by recovering the refrigerant,
weighing and comparing to the nameplate amount. Refer
to "Refrigerant Recovery/Evacuation” page 126 for
recovery procedures.
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