Hoshizaki KM-1301SAH/3, KM-1301SRH/3, KM-1301SWH/3 service manual Evaporator is Frozen Up

Page 60

Problem

Possible Cause

 

Remedy

 

 

 

 

[7] Fan motor will

a) Fan Motor

1. Motor winding open.

1. Replace.

not start, or is not

 

 

 

 

2. Bearing worn out.

2. Replace.

operating (except

 

 

3. Wiring to fan motor.

3. Check for loose connection

water-cooled model).

 

 

 

or open, and replace.

 

 

 

 

 

4. Defective capacitor.

4. Replace.

 

 

 

 

 

 

5. Fan blade bound.

5. Check and replace.

 

 

 

 

 

b) Control Board

1. Defective.

1. See "IV.B. Control Board

 

 

 

Check."

 

 

 

 

[8] All components

a) Refrigerant

1. Low charge.

1. Check for leaks. Recover,

run, but no ice is

 

 

repair, evacuate, and

produced.

 

 

recharge.

 

 

2. Air or moisture

2. Replace drier, evacuate,

 

 

trapped.

and recharge.

 

 

 

 

 

b) Compressor

1. Defective.

1. Replace.

 

 

 

 

 

c) Hot Gas Valve

1. Continues to open in

1. Check and replace.

 

 

freeze cycle.

 

 

 

 

 

 

d) Liquid Line Valve

1. Continues to close in

1. Check and replace.

 

(if applicable)

freeze cycle.

 

 

e) Inlet Water Valve

1. Inlet water valve is

1. Check for water leaks with

 

 

wide open during

icemaker off.

 

 

freeze.

 

 

 

 

 

 

f) Expansion Valve

1. Bulb loose.

1. Secure bulb.

 

 

 

 

 

 

2. Operating erratically.

2. Check and replace.

 

 

 

 

 

g) Headmaster (C.P.R.)

1. Not operating properly

1. Replace headmaster.

 

(remote condenser

and liquid line

 

 

unit)

temperature too warm.

 

 

h) Water Supply Line

1. Condenser water

1. Check and get

 

(water-cooled model)

pressure too low or

recommended pressure.

 

 

off and high pressure

 

 

 

control opens and

 

 

 

closes frequently.

 

 

 

 

 

 

i) Water Regulating Valve

1. Set too high.

1. Adjust or replace. See

 

(water-cooled model)

 

"V.J. Adjustment of Water

 

 

 

Regulating Valve."

 

 

 

 

2. Evaporator is Frozen Up

Problem

Possible Cause

 

Remedy

 

 

 

 

[1]Freeze cycle time is

a) Inlet Water Valve

1. Diaphragm does not

1. Check for water leaks with

too long.

 

close.

icemaker off.

 

 

 

 

 

b) Float Switch

1. Float does not move

1. Clean or replace. See "IV.

 

 

freely or defective

D. Float Switch Check and

 

 

switch.

Cleaning."

 

 

 

 

 

c) Evaporator

1. Scaled up.

1. Clean.

 

 

 

 

 

 

2. Damaged.

2. Replace.

 

 

 

 

 

d) Spray Tubes

1. Dirty.

1. Clean.

 

 

 

 

 

 

2. Out of position.

2. Place in position.

 

 

 

 

 

e) Water Pump

1. RPM too slow.

1. See chart 1.[5].

 

 

 

 

60

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Contents Superior Degree Reliability Hoshizaki AMERICA, INC Contents Page Page Important Safety Information Serious injuryIndicates important information about the use and care UnitSpecifications Icemaker KM-1301SAH air-cooledKM-1301SAH3 air-cooled KM-1301SWH water-cooled KM-1301SWH3 water-cooled KM-1301SRH remote air-cooled KM-1301SRH3 remote air-cooled Condenser Unit URC-14F Unit inches mmSpecifications II. General Information Construction KM-1301SAH, KM-1301SAH3 air-cooledKM-1301SWH, KM-1301SWH3 water-cooled KM-1301SRH, KM-1301SRH3 remote air-cooled Sequence of Operation Sequence Cycles and ShutdownMinute Fill Cycle Initial Harvest CycleS4 Dip Switch Setting Pump-Out 1st Pump-Out Frequency Pump-Out CycleHarvest Cycle ShutdownSequence Flow Chart Icemaker OffIce Level Lowered Control Board Control Board Layout Control BoardHarvest Backup Timer and Freeze Timer High Temperature SafetyLow Water Safety Maximum Water Supply Period 6 minutesLED Lights and Audible Alarm Safeties No. of Beeps Type of Alarm Every 3 secSequence Step Energized Time LEDs are On Components Min Max AvgControls and Adjustments Default Dip Switch SettingsHarvest Timer S4 dip switch 1 Pump-Out Timer S4 dip switch 3 Pump-Out Frequency Control S4 dip switch 5S4 Dip Switch Setting Time seconds Inlet Harvest Pump Timer S4 dip switch Factory Use S4 dip switchFreeze Timer S4 dip switch 9 S4 Dip Switch Setting Pump Motor Time secondsFloat Switch Control S5 dip switch Refill Counter S5 dip switch 2 throughFloat Switch Control SwitchBin Control ThermistorTank Water Tank Valve Wiring Diagrams PressureSwitchAuxiliary Code T-0, U-0 KM-1301SAH air-cooledHigh Pressure Switch 1301SWH water-cooledAuxiliary Code T-0, U-0cKM Water KM-1301SRH3 remote air-cooled Auxiliary Code U-1 and Later a KM-1301SAH air-cooled KM-1301SWH water-cooled KM-1301SRH remote air-cooled KM-1301SAH3 air-cooled and KM-1301SWH3 water-cooled 1301SRH3 remote air-cooled Performance Data 1298 11592090 22201318 13231740 17601333 13001770 18401353 12222010 4791339 11972140 463IV. Service Diagnosis Diagnostic ProcedurePage S4 Dip Switch Setting Pump-Out 1st Pump-Out Frequency Shutdown Control Board Check Float Switch Check and Cleaning Float Switch CheckBin Control Check Float Switch Cleaning Thermistor Check Diagnostic Charts Problem Possible Cause RemedyNo Ice Production BC Closed LED Problem Possible Cause Remedy Evaporator is Frozen Up Problem Possible Cause Remedy Low Ice Production Abnormal Ice Other Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Brazing Evacuation and Recharge R-404ARemoval and Replacement of Compressor Removal and Replacement of Expansion Valve Page Removal and Replacement of Evaporator Removal and Replacement of Air-Cooled Condenser Removal and Replacement of Water-Cooled Condenser Removal and Replacement of Remote Air-Cooled Condenser Page Adjustment of Water Regulating Valve water-cooled model Removal and Replacement of Thermistor Removal and Replacement of Inlet Water Valve Removal and Replacement of Pump Motor Removal and Replacement of Control Board VI. Cleaning and Maintenance Cleaning and Sanitizing InstructionsCleaning Procedure Sanitizing Procedure Following Cleaning Procedure Maintenance Instructions Preparing the Icemaker for Long StorageRemove the water from the icemaker water supply line Drain the water tank
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KM-1301SWH/3, KM-1301SRH/3, KM-1301SAH/3 specifications

The Hoshizaki KM-1301SRH/3, KM-1301SWH/3, and KM-1301SAH/3 are advanced ice makers designed for commercial use, addressing a wide variety of needs in restaurants, hotels, and bars. These models are known for their efficiency, durability, and innovative technologies that ensure the production of high-quality ice.

One of the standout features of these units is their ability to produce a high volume of ice, reaching up to 1,300 pounds per day, which is crucial for establishments with heavy ice demands. The machines utilize advanced cooling technology, allowing for faster ice production and minimizing the time required to refill ice bins. This makes them ideal for busy settings where speed and efficiency are paramount.

The KM-1301 series employs a unique stainless steel exterior that not only ensures longevity and resistance to corrosion but also enhances the aesthetic appeal of any commercial kitchen or bar. The interior is designed for easy cleaning, helping to maintain hygiene standards vital for food safety.

These ice makers utilize the proprietary Hoshizaki Cubelet Ice system, producing small, chewy ice cubes that are perfect for various beverages and food displays. The advanced design of the ice-making mechanism ensures that ice is formed quickly and efficiently, reducing energy consumption. Additionally, Hoshizaki’s CycleSaver technology optimizes the production process by reducing the amount of water used, making these machines environmentally friendly.

Another characteristic is their self-diagnostic capability, which allows for real-time monitoring of unit performance and quicker troubleshooting, minimizing downtime. The built-in alerts notify operators of any issues or maintenance needs, ensuring that the ice-making process remains uninterrupted.

The KM-1301 series also provides user-friendly controls that allow easy adjustments and monitoring of ice production settings. This flexibility enables businesses to meet varying ice demands based on seasonality or special events.

In summary, the Hoshizaki KM-1301SRH/3, KM-1301SWH/3, and KM-1301SAH/3 ice makers are exemplary choices for commercial ice production. With their high output, durable design, energy efficiency, innovative technologies, and user-friendly features, they cater effectively to the rigorous demands of the foodservice industry while maintaining a commitment to quality and sustainability.
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