Hoshizaki KML-200MAE, KML-200MWE service manual

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(2)Defrost Timer

The defrost cycle starts when the Float Switch opens and completes the freeze cycle. But the Defrost Timer does not start counting until the Ther- mistor senses 48°F at the Evaporator outlet. The period from the end of the freeze cycle up to the point of the Thermistor's sensing varies depending on the ambient and water temperatures.

(3)High Temperature Safety - 127 ± 7°F

The temperature of the suction line in the refrigerant circuit is limited by the High Temperature Safety.

During the defrost cycle the Evaporator temperature rises. The Thermistor senses 48°F and starts the Defrost Timer. After the Defrost Timer counts down to zero, the normal freeze cycle begins. If the Evaporator temperature

continues to rise, the Thermistor will sense the rise in temperature and at 127

± 7°F the Thermistor operates the High Temperature Safety.

This High Temperature Safety shuts down the circuit and the icemaker auto- matically stops. To reset the safety, turn the power off and back on again. This High Temperature Safety protects the unit from excessive temperature.

(4)Low Water Safety

The Controller Board checks the position of the Float Switch at the end of the initial one minute water fill cycle and at the end of each defrost cycle.

If the Float Switch is in the up position (electrical circuit closed), the Controller Board changes to the ice making cycle. If the Float Switch is in the down position (electrical circuit open), the Controller Board changes to a one minute water fill cycle before starting the ice making cycle.

For water-cooled model, if the water is shut off, the unit is protected by the High Pressure Switch.

(5)High Voltage Cut-out

The maximum allowable supply voltage of this icemaker is limited by the High Voltage Cut-out.

If miswiring causes excessive voltage on the Controller Board, the High Volt- age Cut-out shuts down the circuit in 3 seconds and the icemaker automati- cally stops. When the proper supply voltage is resumed, the icemaker auto- matically starts running again.

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Contents KML-200MAE KML-200MWE Foreword Contents Refrigerant Recovery Evacuation and Recharge Specifications 1. KML-200MAE KML-200MWE II. General Information Construction KML-200MAEKML-200MWE SOLID-STATE Control Controller BoardController Board Page Alpine C/Alpine Board Sequence 1st Cycle Important Water Valve opening is limited to 6 minutesLine Valve 2nd Cycle and after with pump drain2nd Cycle and after with no pump drain Controls and Adjustments Alpine/Alpine C Board OFF KML-200MWESetting Time Setting Frequency Checking Controller Board Test Program of Controller Board Control Switch SwitchesService Switch III. Technical Information KML-200MWE Wiring Diagrams KML-200MAE, KML-200MWETiming Chart If Float Sw. is OFFTo Freeze Cycle From Freeze Cycle Performance Data Heat of Rejection from Condenser IV. Service Diagnosis No ICE Production Problem Possible Cause RemedyController Board Clean Evaporator is Frozen UP LOW ICE ProductionAbnormal ICE OthersRefrigerant Recovery Evacuation and RechargeRemoval and Replacement of Compressor Important BrazingPage Removal and Replacement of Drier Removal and Replacement of Expansion ValveRemoval and Replacement of HOT GAS Valve and Line Valve Page Removal and Replacement of Evaporator Important Page Adjustment of Water Regulating Valve WATER-COOLED Model only Removal and Replacement of Thermistor Caution Removal and Replacement of FAN Motor Removal and Replacement of Water Valve Removal and Replacement of Pump MotorRemoval and Replacement of Spray Tube Page Page Cleaning Page Sanitizing Procedure Following Cleaning Procedure Maintenance

KML-200MWE, KML-200MAE specifications

The Hoshizaki KML-200MWE and KML-200MAE are commercial ice machines renowned for their high performance and reliability in the foodservice industry. Both models are designed to meet the needs of businesses that require a consistent supply of ice for various applications, including restaurants, bars, and hotels.

One of the standout features of the KML-200MWE and KML-200MAE is their ability to produce high volumes of crisp, clear ice. These machines utilize a combination of advanced refrigeration technology and a unique ice-making process that ensures a rapid ice production rate while maintaining energy efficiency. The modular design allows for easy integration into existing setups, making them an ideal choice for operators looking to expand their ice supply without a complete equipment overhaul.

The KML-200MWE features a built-in water-cooled condenser, allowing for operation in environments where air-cooled systems may not be viable. This feature is particularly useful in warm climates or kitchens with limited ventilation, as it ensures that the machine operates efficiently, regardless of external temperatures. In contrast, the KML-200MAE incorporates an air-cooled condenser, making it a more flexible option for operators who prioritize energy savings and ease of maintenance.

Both models utilize a unique fluorinated refrigerant, which not only enhances their cooling efficiency but also aligns with modern environmental standards. The internal components are constructed from high-quality stainless steel, ensuring durability and resistance to corrosion. Moreover, their easy-to-access design simplifies maintenance routines, enabling operators to keep the machines running smoothly with minimal downtime.

Another key feature of the KML-200MWE and KML-200MAE is their ice storage capacity. With an ample bin size, these machines can store a significant amount of ice, reducing the need for frequent refills and making them ideal for busy establishments. Additionally, they are equipped with automatic ice level controls, which help maintain optimal ice quantities while preventing overflow.

Hoshizaki ice machines are also recognized for their innovative air filtration systems, which improve the quality of the ice produced. This ensures that the ice is not only abundant but also free from any contaminants, meeting the high standards of hygiene expected in the food industry.

In summary, the Hoshizaki KML-200MWE and KML-200MAE are exemplary models that blend technology, efficiency, and durability. Their advanced features make them suitable for various commercial applications, providing operators with reliable performance and peace of mind. Whether choosing the water-cooled or air-cooled variant, businesses can expect a high-quality product that enhances their ice production capabilities.
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