Hoshizaki Official Manual for Optimal Operation of KM-1300SRH Refrigerators
Page 24

1) Defrost Control

A thermistor (semiconductor) is used for a defrost control sensor. The resistance varies depending on the suction line temperatures. The thermistor detects the temperature of the evaporator outlet to start the defrost timer. No adjustment is required. If necessary, check for resistance between thermistor leads, and visually check the thermistor mounting, located on the suction line next to the evaporator outlet.

Temperature (°F)

Resistance (kΩ)

0

14.401

10

10.613

32

6.000

50

3.871

70

2.474

90

1.633

Check a thermistor for resistance by using the following procedures.

(i)Disconnect the connector K3 on the board.

(ii)Remove the thermistor. See “V. 11. Removal and Replacement of Thermistor.”

(iii)Immerse the thermistor sensor portion in a glass containing ice and water for 2 or 3 minutes.

(iv)Check for a resistance between thermistor leads.

Normal reading is within 3.5 to 7 kΩ. Replace the thermistor if it exceeds the normal reading.

2)Defrost Timer

No adjustment is required under normal use, as the defrost timer is adjusted to the suitable position. However, if necessary because all the ice formed on the evaporator does not fall into the bin in the harvest cycle, adjust the defrost timer to a longer setting by adjusting the dip switch (No. 1 & 2) on the controller board.

SETTING

 

TIME

Dip Switch

Dip Switch

 

No. 1

 

No. 2

 

OFF

 

OFF

60 seconds

ON

 

OFF

90 seconds

OFF

 

ON

120 seconds

ON

 

ON

180 seconds

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Contents Hoshizaki Stackable Crescent Cuber Hoshizaki AMERICA, INC Contents Page Specifications Icemaker KM-1300SAHKM-1300SWH Water Cooled CondenserKM-1300SRH KM-1300SAH3 KM-1300SWH3 KM-1300SRH3 Condensing Unit URC-12FSpecifications Model URC-12F II. General Information Construction KM-1300SAH, KM-1300SAH3KM-1300SWH, KM-1300SWH3 KM-1300SRH, KM-1300SRH3 Features of Control Products E Controller Board Controller BoardSolid-State Control Controller BoardPage Beep every 3 sec. = High Evaporator Temperature 127 F Minute Fill CycleHarvest Cycle CycleControl Products HOS-001A Board Sequence 1st Cycle 2nd Cycle and after with pump drain Important Water Valve opening is limited to 6 minutes2nd Cycle and after with no pump drain Controls and Adjustments Dip switch is factory-adjusted to the following positionsSetting Time Setting Frequency Checking the Controller Board Page KM-1300SAH, KM-1300SAH3 KM-1300SWH, KM-1300SWH3 KM-1300SRH, KM-1300SRH3 Wiring Diagrams KM-1300SAH, KM-1300SWHPsig KM-1300SAH3, KM-1300SWH3 Cut-out 412 0 +21.3 Psig Cut-in 327 ± 21.3 Psig Timing Chart Page Performance Data 3271284 1296 1320 1254 1308 IV. Service Diagnosis No Ice Production Problem Possible Cause RemedyProblem Possible Cause Remedy Water Regulator Water Problem Possible Cause Remedy Evaporator is Frozen Up Low Ice Production Abnormal IceOther Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-404ABrazing Removal and Replacement of Compressor Removal and Replacement of Drier Removal and Replacement of Expansion Valve Removal and Replacement of Hot Gas Valve and Line Valve Removal and Replacement of Evaporator Page Adjustment of Water Regulating Valve Water-Cooled Model Only Page Removal and Replacement of Thermistor Removal and Replacement of Fan Motor Removal and Replacement of Water Valve Removal and Replacement of Pump MotorRemoval and Replacement of Spray Tubes VI. Maintenance and Cleaning Instructions Preparing the Icemaker for Long StoragePage Cleaning and Sanitizing Procedures Cleaning Procedure Page Sanitizing Procedure Following Cleaning Procedure Maintenance

KM-1300SRH3, KM-1300SWH, KM-1300SRH, KM-1300SAH, KM-1300SWH3 specifications

The Hoshizaki KM-1300 series ice makers are designed to meet the demands of high-volume establishments requiring consistent, high-quality ice production. Among the models in this series are the KM-1300SAH3, KM-1300SWH, KM-1300SRH3, KM-1300SWH3, and KM-1300SAH, each boasting a variety of features and technologies to enhance efficiency and reliability.

One of the standout features of the KM-1300 series is its impressive ice production capacity. Each model is capable of producing up to 1,300 pounds of ice in a 24-hour period, making them ideal for busy restaurants, hotels, or bars that serve a high volume of customers. The machines are designed to create crescent ice, known for its pellet-like texture that is perfect for drink service and food display.

Energy efficiency is another key characteristic of the Hoshizaki KM-1300 models. They are equipped with a highly efficient refrigeration system that minimizes energy consumption while maximizing output. Many of the models in this series are certified by Energy Star, helping operators reduce their environmental footprint and lower operational costs.

Durability and ease of maintenance are also prominent features of the KM-1300 series. Constructed with stainless steel exteriors, these ice makers are built to withstand the rigors of a busy kitchen environment. Additionally, Hoshizaki has incorporated a unique air-cooled condenser design, which reduces the need for frequent servicing and minimizes downtime.

The KM-1300SAH3 and KM-1300SAH models come with advanced touch controls and a user-friendly interface, allowing operators to monitor and adjust settings with ease. The built-in self-diagnostic system alerts users to potential issues before they escalate, improving reliability and ensuring consistent ice production.

For those seeking flexibility, the KM-1300 series also offers modular designs, enabling operators to stack units or configure them in various layouts to optimize space. This adaptability makes these ice makers a smart choice for establishments with limited room or specific design requirements.

In summary, the Hoshizaki KM-1300 series ice makers combine efficiency, durability, and high production rates with advanced technology and user-friendly features. Ideal for high-demand environments, these machines deliver reliable performance and consistent ice quality, making them a valuable asset for any food service operation.
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