Hoshizaki KM-501MRH, KM-501MWH, KM-501MAH service manual Problem Possible Cause Remedy

Page 36

Problem

Possible Cause

 

Remedy

 

 

 

 

 

m)Interlock Switch Open

1. Misaligned.

1. Realign.

 

(Cleaning Valve)

 

 

 

 

2. Bad contacts.

2. Check for continuity and

 

 

 

replace.

 

 

 

 

 

n)Wash Switch

1. WASH position.

1. Move to ICE position.

 

 

 

 

 

 

2. Bad contacts.

2. Check and replace.

 

 

 

 

[2] Water continues to

a)Float Switch

1. Connector

1. Place in position.

be supplied, and the

 

disconnected.

 

icemaker will not

 

 

 

 

2. Leads opened or

2. Check and replace.

start.

 

 

defective switch.

 

 

 

 

 

 

 

 

 

 

3. Float does not move

3. Clean or replace.

 

 

freely.

 

 

 

 

 

 

b)Control Board

1. Defective.

1. Replace.

 

 

 

 

[3] Compressor will

a)Magnetic Contactor

1. Bad contacts.

1. Check for continuity and

not start or stops

 

 

replace.

operating.

 

 

 

 

2. Coil winding opened.

2. Replace.

 

 

 

 

 

 

 

b)Start Capacitor or Run

1. Defective.

1. Replace.

 

Capacitor

 

 

 

 

 

 

 

c) Internal Overload

1. Loose terminal.

1. Tighten or replace.

 

Protector Open (check

 

 

 

1 through 3 to the right

2. Voltage.

2. Check and correct.

 

and d through f below)

 

 

 

3. Dirty condenser.

3. Clean.

 

 

 

 

 

d)Starter

1. Bad contacts.

1. Check and replace.

 

 

 

 

 

 

2. Coil winding opened.

2. Replace.

 

 

 

 

 

e)Compressor

1. Wiring to compressor.

1. Check for loose

 

 

 

connection or open, and

 

 

 

replace.

 

 

 

 

 

 

2. Defective.

2. Replace.

 

 

 

 

 

 

3. Protector tripped.

3. Reduce temperature.

 

 

 

 

 

f) Control Board

1. No power to contactor.

1. See "II.C.4. Control Board

 

 

 

Check Procedure."

 

 

 

 

[4] Water continues to

a)Inlet Water Valve

1. Diaphragm does not

1. Check for water leaks with

be supplied in freeze

 

close.

icemaker off.

cycle.

 

 

 

b)Control Board

1. Defective.

1. See "II.C.4. Control Board

 

 

 

 

Check Procedure."

 

 

 

 

[5] No water comes from

a)Water Supply Line

1. Water pressure too

1. Check and get

spray tubes. Water

 

low and water level in

recommended pressure.

pump will not start, or

 

water tank too low.

 

freeze cycle time is

 

 

 

b)Inlet Water Valve

1. Dirty mesh filter or

1. Clean.

too short.

 

orifice and water level

 

 

 

 

 

 

in water tank too low.

 

 

 

 

 

 

c) Water System

1. Water leaks.

1. Check connections for

 

 

 

water leaks, and replace.

 

 

 

 

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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 Products E Control Board Control Board LayoutControl Board 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 Low Ice Production Abnormal IceOther Problem Possible Cause Remedy Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery 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 Fan Motor Removal and Replacement of Inlet Water ValveRemoval and Replacement of Pump Motor Removal and Replacement of Spray Tubes VI. Cleaning and Maintenance Instructions Cleaning and Sanitizing ProceduresCleaning Procedure Maintenance Sanitizing Procedure Following Cleaning ProcedureStainless Steel Exterior Preparing the Icemaker for Long Storage Storage Bin and ScoopAir Filters air-cooled models only Condenser air-cooled and remote air-cooled models only
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Manual 27 pages 6.6 Kb

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.
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