Hoshizaki SRH/3 KM-1900SAH/3, SRH/3 KM-2100SWH3, SRH/3 KM-1400SWH-M, KM-1301SAH/3 Thermistor Check

Page 35

F. Thermistor Check

To check thermistor resistance, follow the steps below.

1)Turn off the power supply.

2)Remove the front panel. Move the control switch to the "OFF" position.

3)Remove the control box cover.

4)Remove the thermistor from the refrigerant tubing.

5)Immerse the thermistor sensor portion in a glass containing ice and water for 2 or 3 min.

6)Disconnect the thermistor connector from CB K3 connector and check the resistance between thermistor leads. Normal range is 4.7 to 6.2 kΩ. If outside the normal range, replace the thermistor. See "IV.B. Component Service Information." If within the normal range, continue to the next step.

7)Replace the thermistor in its correct position. See "IV.B. Component Service Information."

8)Reconnect the thermistor connector to CB K3 connector.

9)Replace the control box cover in its correct position.

10)Move the control switch to the "ICE" position.

11)Replace the front panel in its correct position.

12)Turn on the power supply.

13)Once the harvest cycle starts (Comp energizes), begin timing the harvest cycle.

14)The harvest timer and harvest cycle should terminate within 2 to 5 min. If the harvest cycle does not terminate within 2 to 5 min., replace CB.

Legend: CB–control board; Comp–compressor

Thermistor Lead

Cable Tie

Foam Insulation

Thermistor Holder

Fig. 3

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Contents Superior Degree Reliability Hoshizaki AMERICA, INC Contents Page 100 Important Safety Information Additional Warning for Remote Models Model Shown KM-1301SAH3 Air-Cooled Models SAH/3Model Shown KM-1301SWH3 Water-Cooled Models SWH/3/-MModel Shown KM-1301SRH3 Remote Models SRH/3Model Shown KMH-2000SWH3 KMH ConstructionWater-Cooled Models SWH/3 Model Shown KMH-2000SRH3 Water Tank DiagramWater Supply KM-2500SRH3 Water To 1 -Minute Fill Cycle Sequence of Operation Flow ChartShutdown Bin Full Icemaker Off Ice Level Lowered Restart Harvest Pump Timer Startup Control Board with Harvest Pump Timer OperationService Diagnosis G Control Board without Harvest Pump Timer Diagnosis Page Page OFF Shutdown E and G Control Board Control Board with Harvest Pump Timer Diagnosis Page Page Page Every cycle After 2nd freeze cycle Shutdown G Control Board Control Correct LED Board Lighting Sequence Control Board CheckBin Control Check Float Switch Check Float Switch Check and CleaningFloat Switch Cleaning Thermistor Check No Ice Production Possible Cause Diagnostic TablesNo Ice Production Freeze-Up Possible Cause Harvest Cycle Freeze-UpLow Ice Production Possible Cause Long Harvest Cycle Low Ice ProductionFreeze-Up Possible Cause Freeze CycleLow Ice Production Possible Cause Long Freeze Cycle III. Controls and Adjustments Control Board Control Board LayoutControl Board S5 Dip Switch K5 black Connector Bin Control Switch Open LED yellowPart Number Alarm Buzzer K2 ConnectorEnergized Time LEDs are On Components Min Max Avg LED Lights and Audible Alarm SafetiesNo. of Beeps Type of Alarm Every 3 sec Sequence StepControl Board Default Dip Switch Settings Settings and AdjustmentsHarvest Timer S4 dip switch 1 S4 Dip Switch G Control BoardsS5 Dip Switch Valve Pump-Out Timer S4 dip switch 3S4 Dip Switch Setting Time sec Inlet Water Control Board Pump-Out Frequency Control S4 dip switch 5Control Board 1st Pump-Out S4 Dip Switch Setting Frequency S4 Dip Switch SettingS4 Dip Switch Setting Time Min Factory Use S4 dip switchFreeze Timer S4 dip switch 9 Control Board S4 Dip Switch Setting Pump Motor Time secRefill Counter S5 dip switch 2 through 5 G Control Board Control SwitchFloat Switch Selector S5 dip switch 1 G Control Board Refrigerant Recovery IV. Refrigeration Circuit and Component Service InformationRefrigeration Circuit Service Information Evacuation and Recharge R-404A BrazingPage Component Component Service InformationWater Regulating Valve Adjustment water-cooled models Frequency Area Task MaintenanceMaintenance Schedule Drain the water tank VI. Preparing the Icemaker for Periods of Non-UseRemove the water from the icemaker water supply line Page VII. Disposal KM-1301SAH Specification and Performance DataVIII. Technical Information KM-1301SAH3 Electric & Water Consumption KM-1301SWH240 KM-1301SWH31770 237KM-1301SRH with URC-14F 214 KM-1301SRH3 with URC-14F463 192KM-1400SWH-M 230 KM-1400SWH3-M1700 1720228 KM-1601SAH1462 24502610 KM-1601SAH31456 257 KM-1601SWH241 KM-1601SWH3 12.8 a 5 Min. Freeze AT 104F/WT 80F 213 785375 207 KM-1601SRH with URC-22F Auxiliary Codes S-2 and Later755 352247 504202 781 KM-1601SRH3 with URC-22F Auxiliary Codes S-2 and Later 2480 KM-1900SAH1859 KM-1900SAH31650 KM-1900SWH1876 1850239 KM-1900SWH31814 2137KM-1900SRH with URC-21F 328 KM-1900SRH with URC-22F1857 2500332 KM-1900SRH3 with URC-21F1965 2680KM-1900SRH3 with URC-22F 1794 KM-2100SWH32096 270 KM-2100SRH3 with URC-22F3210 3822174 KM-2500SWH32408 3780 KM-2500SRH3 with URC-23F1464 KMH-2000SWH1821 2410KMH-2000SWH3 307 KMH-2000SRH with URC-22F1944 2570KMH-2000SRH3 with URC-22F KM-1601SWH, KM-1601SRH, KM-1900SH, KMH-2000SH Wiring DiagramsKM-2500SH3, KMH-2000SH3 Auxiliary Code Diagrams with Harvest Pump Timer Relays G Control BoardKM-1301SH3 Auxiliary Code T-0, U-0 KM-1301SH Auxiliary Code U-1 and Later and KM-1601SAH KM-1301SH3 Auxiliary Code U-1 and Later and KM-1601SAH3 KM-1400SWH-M KM-1400SWH3-M
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SRH/3 KM-1900SAH/3, SRH3 KM-2500SWH3, SRH3 KMH-2000SWH/3, SWH/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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