Air
Flow

ICE Series

Refrigeration System

Note: Permanent discoloration of the evaporator plating is normal and will cause no problems with harvesting the ice or sanitary conditions. Before condemning the evaporator for plating problems, be certain it is not just discoloration. Good evaporators will not be covered under warranty. If the spillway (plastic evaporator top) becomes damaged, it can be replaced. It is not necessary to replace the entire evaporator.

As liquid refrigerant leaves the evaporator, it changes to a low-pressure gas before returning to the compressor. Liquid refrigerant must not return to the compressor or damage will result. Frost on the suction line at the inlet of the compressor indicates liquid returning to the compressor. Check for frost at the end of the freeze cycle. If liquid is returning to the compressor, the problem must be located and corrected. See Refrigerant Charge, Thermostatic Valve and Evaporator.

Harvest Cycle

Once the freeze cycle is complete, the machine enters the harvest cycle. The hot gas valve opens to allow hot discharge gas to enter the evaporator.

Hot Gas Valve

When the machine enters harvest the hot gas valve coil is energized opening the hot gas valve. Discharge gas is pumped through the hot gas valve directly into the evaporator. The evaporator temperature will reach approximately 40°F (4.5°C). The suction pressure during harvest should be a minimum of 70 psi (4.8 bar) for R404a units or 50psi (3.4 bar) for R134a units. The discharge pressure will drop during harvest.

If the hot gas valve does not completely open during harvest, there will not be enough hot gas in the evaporator to defrost the ice. If there is not enough hot gas entering the evaporator, the suction pressure will be lower than the above stated pressures. It is important when making this check that the machine has the proper refrigerant charge, normal head pressure and the compressor is functioning properly. If the hot gas valve leaks during the freeze cycle, ice will not form on the top of the evaporator and suction pressure will be higher than normal. To check if the hot gas valve is leaking, let the machine run in the freeze cycle for approximately 5 minutes. Now feel the temperature between the inlet and outlet of the valve. A definite temperature difference should be felt. If the lines are the same temperature and the suction pressure is higher than normal; the valve is leaking and should be replaced. Use Troubleshooting Trees in section C.

Remote System

Machines that use remote condensers have several components that are not used in self contained machines. A mixing valve controls the head pressure when the ambient temperature at the condenser drops below 70°F (21°C). When the bin fills with ice or is turned off at the selector switch, the machine will pump all the refrigerant into the receiver before shutting off.

Remote Condenser

For proper operation, the remote condenser must be installed properly. Improper installation will void the warranty. See remote guidelines on page A18. The location of the remote condenser should be such that the ambient air temperature does not exceed 120°F (48.9°C). If ambient temperature exceeds 120°F (48.9°C) ice production will decrease until the ambient temperature decreases.

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Ice-O-Matic ICE0250 Series installation manual Harvest Cycle, Hot Gas Valve, Remote System, Remote Condenser
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ICE0250 Series specifications

The Ice-O-Matic ICE0250 Series is a high-performance, modular ice maker that has been designed specifically to meet the needs of commercial establishments. Known for its durability and efficiency, this series is ideal for restaurants, bars, and hotels requiring a consistent supply of quality ice. The unit produces up to 250 pounds of clear, cube ice per day, making it an excellent choice for businesses with moderate ice demands.

One of the standout features of the ICE0250 Series is its energy efficiency. The ice maker is designed with a focus on reducing energy consumption, enabling business owners to save on operational costs while still providing ample ice for their customers. The unit is ENERGY STAR certified, reflecting its compliance with energy efficiency guidelines set by the U.S. Environmental Protection Agency (EPA).

The ICE0250 model also incorporates a unique air filtration system that helps ensure an uninterrupted ice production cycle. This technology minimizes the impact of airborne dust and contaminants, which can significantly affect the quality and hygiene of the ice produced. The unit's heavy-duty construction is designed to withstand the rigors of commercial use, providing long-lasting performance.

Another key characteristic of the ICE0250 Series is its compact design, which allows it to fit seamlessly into various commercial kitchen settings. Despite its smaller footprint, the unit does not compromise on ice production capabilities. Additionally, its user-friendly controls simplify operation, making it easy for staff to manage the ice-making process effectively.

Maintenance is also straightforward with the Ice-O-Matic ICE0250 Series. It features a self-cleaning function that automatically flushes the system, helping to maintain optimal performance while reducing the frequency and complexity of manual cleanings. This feature can save valuable time for busy kitchen staff.

In conclusion, the Ice-O-Matic ICE0250 Series stands out as an efficient, durable, and reliable ice maker for commercial applications. With its energy-saving technologies, robust construction, and ease of maintenance, this ice maker is a top choice for businesses looking to deliver ice in a consistent and hygienic manner. Whether for serving refreshing beverages or creating exquisite culinary presentations, the ICE0250 ensures that ice production remains effortless and efficient.
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