Hoshizaki KM-501MAH, KM-501MRH, KM-501MWH Cycle Steps Harvest Cycle Freeze Cycle One Minute

Page 14

KM-501MAH, KM-501MWH, KM-501MRH Sequence Flow Chart and Component Operation

14

Cycle Steps

 

 

 

 

 

 

 

2. Harvest Cycle

 

 

 

3. Freeze Cycle

 

 

 

 

 

 

 

 

1. One Minute

 

• Maximum inlet water valve time: 6 minutes

 

• Minimum freeze time: 5 minutes

4. Pump-Out

 

 

 

 

 

 

 

Fill Cycle

 

• Maximum harvest time: 20 minutes

 

• Maximum freeze time: freeze timer setting

 

Cycle

 

 

Thermistor in

1 to 3 minute timer

5 minute timer

F/S in

 

Initial startup always

 

control

in control

 

in control

 

control

 

 

 

 

 

 

 

 

 

 

begins here

 

F/S closed

 

 

F/S closed

 

 

 

"E" board will have

F/S Check

F/S Check

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5 second delay

WV Energized

Comp energized

Thermistor temp

Comp continues

Freeze cycle

Pump motor stops

 

F/S open

HGV energized

reaches 48°F (9°C)

FMR continues

 

operation turned

for 2 sec. and then

 

FMR energized

(3.9 kor less)

HGV de-energized

over to F/S

reverses for 10/20 sec.

 

 

WV continues

Harvest timer starts

WV de-energized

 

each 1, 2, 5, or 10 cycles.

 

 

 

 

 

 

PM energized

 

 

Comp continues

 

 

 

 

 

F/S open

FMS energized

 

 

FMR continues

 

 

 

If F/S is open, compressor stops and cycle returns to 1 minute fill

HGV energized

 

 

 

FMS de-energized

 

 

 

 

 

 

 

 

 

Legend:Comp - compressor

 

FMS - self-contained fan motor

HGV - hot gas valve

WV - inlet water valve

 

 

FMR - remote fan motor

F/S - float switch

 

PM - pump motor

 

 

 

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Contents KM-501MAH KM-501MWH KM-501MRH Hoshizaki AMERICA, INC Contents Page Specifications Icemaker KM-501MAH air-cooledKM-501MWH water-cooled Water Cooled CondenserKM-501MRH remote air-cooled Condensing Unit URC-6FSpecifications II. General Information Construction KM-501MWH water-cooled KM-501MRH remote air-cooled Sequence of Operation Cycle Steps Harvest Cycle Freeze Cycle One Minute Control Board Control Board Control Products E Control BoardControl Board Layout Features Maximum Water Supply Period 6 minutesLED Lights and Audible Alarm Safeties Controls and Adjustments Default Dip Switch SettingsHarvest Timer dip switch 1 Pump-Out Frequency Control dip switch 5 Control Board Check Procedure Control Board ReplacementKM-501MAH air-cooled KM-501MWH water-cooled KM-501MRH remote air-cooled Wiring Diagrams KM-501MAH air-cooled and KM-501MWH water-cooledPsig Timing Chart Page Performance Data 245488 482 IV. Service Diagnosis Minute KM Diagnostic Procedure Diagnostic Charts No Ice ProductionProblem Possible Cause Remedy Problem Possible Cause Remedy Problem Possible Cause Remedy Evaporator is Frozen Up Other Low Ice ProductionAbnormal Ice Problem Possible Cause Remedy Refrigerant Recovery Removal and Replacement of ComponentsService for Refrigerant Lines Evacuation and Recharge R-404ARemoval and Replacement of Compressor BrazingRemoval and Replacement of Drier Removal and Replacement of Expansion Valve Removal and Replacement of Hot Gas Valve and Line ValveRemoval and Replacement of Evaporator Adjustment of Water Regulating Valve Water-Cooled Model Only Adjustment Screw CW Higher CCW Lower Top View Removal and Replacement of Thermistor Removal and Replacement of Pump Motor Removal and Replacement of Fan MotorRemoval and Replacement of Inlet Water Valve Removal and Replacement of Spray Tubes VI. Cleaning and Maintenance Instructions Cleaning and Sanitizing ProceduresCleaning Procedure Stainless Steel Exterior MaintenanceSanitizing Procedure Following Cleaning Procedure Air Filters air-cooled models only Preparing the Icemaker for Long StorageStorage Bin and Scoop Condenser air-cooled and remote air-cooled models only
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KM-501MAH, KM-501MWH, KM-501MRH specifications

The Hoshizaki KM-501MWH, KM-501MAH, and KM-501MRH are standout models in the commercial ice machine market, known for their robust performance and innovative technologies. These machines are specially designed to meet the diverse needs of restaurants, bars, and other food service establishments that require a reliable source of high-quality ice.

One of the defining features of the KM-501 series is their high production capacity. Each model can produce up to 500 pounds of ice per day, ensuring that even the busiest establishments can keep up with demand. The ice produced is crystal-clear, with a unique crescent shape that not only looks appealing but also melts slowly, making it ideal for drinks and food presentations.

The KM-501MWH model is equipped with advanced technology that ensures energy efficiency and reduced water usage. It features a powerful compressor and a highly efficient evaporator, which work together to minimize energy consumption while maximizing output. This makes it an environmentally friendly choice, reducing operational costs for businesses.

The KM-501MAH model stands out with its air-cooled condenser system, which allows for optimal performance without the need for extensive cooling water lines. This makes the installation process easier and reduces complexity, enabling businesses to set up their ice machine with minimal hassle. Furthermore, it features a self-cleaning mode that simplifies maintenance, contributing to consistent ice quality over time.

On the other hand, the KM-501MRH is designed for rugged environments. It is constructed with high-quality materials that enhance durability and longevity, making it suitable for outdoor applications or establishments located in warmer climates. The stainless-steel design not only contributes to the machine's robustness but also ensures easy cleaning and resistance to rust and corrosion.

Another key characteristic of the Hoshizaki KM-501 models is their user-friendly control panel. These machines come with intuitive controls that allow operators to easily adjust settings and monitor performance. This feature is particularly useful for staff in busy kitchens, enabling them to focus on service without constant checks on ice production.

Overall, the Hoshizaki KM-501MWH, KM-501MAH, and KM-501MRH offer excellent performance, energy efficiency, and user-friendliness. Their combination of innovative technologies, durable design, and high output capacity make them exceptional choices for any establishment in need of reliable ice production. Whether for a bustling restaurant or a bar serving up cocktails, these machines deliver ice that consistently meets high standards.