icetro IM Series, Руководство техника

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Final Analysis - Self-contained Air, Water & Remote
Condenser Models
HOT GAS VALVE LEAKING
Replace the valve as required.
LOW CHARGE/TXV STARVING
Normally, a starving expansion valve only affects the
freeze cycle pressures, not the harvest cycle pressures.
A low refrigerant charge normally affects both
pressures. Verify the ice machine is not low on charge
before replacing an expansion valve.
1. Add refrigerant charge to verify a low charge (air
and water self-contained only). Do not add more
than 30% of nameplate refrigerant charge. If the
problem is corrected, the ice machine is low on
charge.
*
Do not add charge to remote models. The
symptoms of a remote low on charge will result in
error code #11 in cool ambient temperatures.
2. Find the refrigerant leak. The ice machine must
operate with the nameplate charge. If the leak
cannot be found, proper refrigerant procedures
must still be followed. Change the liquid line drier.
Then, evacuate and weigh in the proper charge.
3. If the problem is not corrected by adding charge,
the expansion valve is faulty.
TXV FLOODING OR REFRIGERANT OVERCHARGE
A loose or improperly mounted expansion valve bulb
can cause the expansion valve to flood. Check bulb
mounting, insulation, etc., before changing the valve.
Verify refrigerant amount is correct by weighing
recovered refrigerant before replacing a TXV.
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