Hoshizaki KML "H" SERIES Minute Fill Cycle, Harvest Cycle, Freeze Cycle, Reverse Pump Out

Page 34

The green LED’s 1-4 represent the corresponding relays and energize and sequence 5 seconds from initial start-up as follows:

Sequence Step

LED’s on Length:

Min.

Max.

Avg.

1 Minute Fill Cycle

LED4

 

 

60 sec.

Harvest Cycle

LED1, 4, & 2

2 min.

20 min.

3-5 min.

Freeze Cycle

LED1

5 min.

60 min.

30-35 min.

Reverse Pump Out

LED1, 3, & 2

10 sec.

20 sec.

Factory set.

{LED 1 – Comp; LED 2 - HGV/CFM; LED 3 – PM;

LED 4 - WV}

 

The built in safeties shut down the unit and have alarms as follows:

1 beep every 3 sec. = High Evaporator Temperature >127 ° F.

Check for defrost problem (stuck HGV or relay), hot water entering unit, stuck headmaster, or shorted thermistor.

2 beeps every 3 sec. = Defrost Back Up Timer. Defrost >20 minutes. Orange LED marked 20 MIN energizes.

Check for open thermistor, HGV not opening, TXV leaking by, low charge, or inefficient compressor.

3 beeps every 3 sec. = Freeze Back Up Timer. Freeze > 60 minutes. Yellow LED marked 60 MIN energizes.

Check for F/S stuck closed (up), WV leaking by, HGV leaking by, TXV not feeding properly, low charge, or inefficient compressor.

Machines with mechanical bin control

ONLY

4 beeps every 3 sec. = Short Circuit between the K4 connection on the control board and the bin control relay. Check connections and replace wire harness if necessary.

5 beeps every 3 sec. = Open Circuit between the K4 connection

on the control board and the bin control relay. Check connections and replace wire harness if necessary.

To manually reset the above safeties, depress white alarm reset button with the power supply ON.

6 beeps every 3 sec. = Low Voltage. Voltage is 92 Vac or less.

7 beeps every 3 sec. = High Voltage. Control voltage > 147 Vac ±5%. The red LED will de-energize if voltage protection operates.

The voltage safety automatically resets when voltage is corrected.

The Output Test switch “S3” provides a relay sequence test. With power OFF, place S3 ON and switch power to ICE. The correct lighting sequence should be none, 2, 3, 4, 1, & 4, normal sequence every 5 seconds. S3 should remain in the “OFF” position for normal operation.

34

Page 33 Page 35
Image 34
Page 33 Page 35
Contents KML F Series KML H Series Hoshizaki AMERICA, INC Contents Wiring Diagrams Removal and Replacement of FAN Motor Specifications KML-250MAHKML-250MWH KML-350MAF KML-350MWF KML-350MAH KML-350MWH Beginning serial #L00001J, ending Serial #M20060C KML-350MWH Beginning serial #M30061E KML-450MAF KML-450MWF KML-450MAH KML-450MWH Beginning Serial #L00001D, ending Serial #M10530B KML-450MWH Beginning Serial #M20531D KML-600MAF KML-600MWF KML-600MRF KML-600MAH KML-600MWH Beginning Serial #L00001D, ending Serial #M10115C KML-600MWH Beginning Serial # M10121E KML-600MRH Condenser Unit URC-7F Specifications URC-7F II. General Information Construction KML-250MAH, KML-350MAF, KML-350MAH, KML-450MAF, KML-450MAHKML-250MWH, KML-350MWF, KML-350MWH, KML-450MWF, KML-450MWH KML-600MAF, KML-600MAH KML-600MWF, KML-600MWH KML-600MRF, KML-600MRH Controller Board Controller BoardSOLID-STATE Control For machines with thermostat, there is no connection on K4Page Harvest Cycle Beep every 3 sec. = High Evaporator Temperature 127 FMinute Fill Cycle Freeze CycleControl Products HOS-001A Board Sequence 1st Cycle Important Water Valve opening is limited to 6 minutes2nd Cycle and after with pump drain 2nd Cycle and after with no pump drain For Models with Thermostat Controls and AdjustmentsFor Models with Mechanical BIN Control Page Setting Time Models with Thermostat Models with Mechanical BIN Control Checking the Controller BoardControl Switch SwitchesService Switch These Instructions not Applicable to Models with Thermostat Proximity SwitchMechanical BIN Control Explanation of OperationTroubleshooting Mechanical BIN Control only III. Technical Information Water Circuit and Refrigerant CircuitPage KML-600MRF, KML-600MRH Wiring Diagrams KML-250MWH Pressure Switch KML-350MAF KML-350MWFKML-350MWH KML-350MAH Beginning Serial #M40081G Beginning Serial #M20291GKML-450MAF and KML-450MWF KML-450MWH Pressure Switch KML-450MWH Beginning Serial #M30711G Beginning Serial #M22771G KML KML-600MAFKML-600MWF 600MRFPage Page KML-600MRH Beginning Serial #M20331E Beginning Serial #M20141FTiming Chart Controls and AdjustmentsWash Performance Data KML-250MWH KML-350MAF KML-350MWF KML-350MAH KML-350MWH Serial #L00001J through M20060C KML-350MWH Beginning Serial #M30061E KML-450MAF KML-450MWF KML-450MAH KML-450MWH Serial #L00001D through M10530B KML-450MWH Beginning Serial #M20531D KML-600MAF KML-600MWF KML-600MRF KML-600MAH KML-600MWH Serial #L00001D through Serial #M10115C KML-600MWH Beginning Serial #M10121E KML-600MRH IV. Service Diagnosis 1. no ICE Production Problem Possible Cause RemedyController Board Clean Evaporator is Frozen UP LOW ICE ProductionAbnormal ICE OthersRefrigerant Recovery Removal and Replacement of ComponentsService for Refrigerant Lines Evacuation and Recharge R-404ABrazing Removal and Replacement of Compressor Important Removal and Replacement of Drier Removal and Replacement of Expansion Valve Removal and Replacement of HOT GAS Valve and Line Valve Page Removal and Replacement of Evaporator Important Page Adjustment of Water Regulating Valve WATER-COOLED Model only Page Removal and Replacement of Thermistor Caution Removal and Replacement of FAN Motor Removal and Replacement of Water Valve Removal and Replacement of Pump Motor Removal and Replacement of Spray TubesVI. Maintenance and Cleaning Instructions Preparing the Icemaker for Long StoragePage Cleaning Procedure Page Sanitizing Procedure Following Cleaning Procedure Maintenance

KML "F" SERIES, KML "H" SERIES specifications

The Hoshizaki KML "H" Series and KML "F" Series are state-of-the-art commercial ice machines designed to meet the diverse needs of the foodservice industry. Renowned for their reliability, efficiency, and innovative technology, these ice machines are perfect for restaurants, bars, and hotels seeking high-quality ice production.

The KML "H" Series focuses on producing crescent cubed ice, a preferred choice for many establishments due to its slow melting rate and ability to chill beverages effectively. One of the main features of the "H" Series is the ice-making process, which utilizes advanced technology to ensure a quick production cycle. The machines come with a variety of capacities to suit different business sizes, ranging from small-scale operations to large commercial needs.

The KML "F" Series, on the other hand, is designed to produce flaky ice, which is ideal for display in seafood and salad bars. This series stands out with its unique ice texture, perfect for preserving freshness and enhancing presentation. The "F" Series also boasts high production rates, ensuring a continuous supply of ice even during peak hours.

Both series come equipped with Hoshizaki's exclusive Cascade Ice Making System, which enhances water flow and improves efficiency, leading to lower energy consumption. This is complemented by an exterior that is easy to clean and maintain, reducing labor costs associated with upkeep.

Key characteristics of the KML Series include durable stainless-steel construction, providing longevity and resistance to corrosion. Moreover, both series feature a self-diagnostic control system that alerts users to potential issues before they become significant problems, thereby minimizing downtime.

In addition to their robust design and performance, they also incorporate environmental considerations. Hoshizaki machines are engineered to operate using refrigerants that have a lower impact on the ozone layer, making them compliant with global environmental standards.

Overall, the Hoshizaki KML "H" Series and KML "F" Series stand out in the competitive landscape of commercial ice machines, combining innovative technology, exceptional durability, and user-friendly features to provide a reliable ice-making solution for various foodservice applications.
Top Page Image Contents