Hoshizaki KM-1601SAH/3, KM-1601SWH/3, KM-1601SRH/3 service manual Sequence Flow Chart

Page 25

KM-1601SAH/3

"G" Control Board Sequence Flow Chart

a)

2.

KM-

 

Cycle Steps

Startup begins here after 5-sec. delay

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. 1-Minute Fill

 

2. Harvest Cycle

 

 

 

 

 

 

 

 

3. Freeze Cycle

 

 

 

 

4. Pump-Out Cycle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cycle

 

 

• WV time: 6 min. or the length of harvest minus 0 or

 

 

 

• Minimum freeze time: 5 min.

• Factory set for every

 

 

 

 

 

 

 

 

 

 

50 sec. (S4 dip switch 7), whichever is shorter. DO

 

 

 

• Maximum freeze time: freeze timer setting

10th cycle (S4 dip

 

 

 

 

 

 

 

 

 

 

NOT ADJUST S4 dip switch 7 on this model.

 

 

 

(S4 dip switch 9 & 10)

switch 5 & 6)

 

 

 

 

 

 

 

 

 

 

• Maximum harvest time: 20 min.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Pump motor stops for

 

 

 

 

 

 

 

 

 

 

 

Thermistor

 

 

 

1 to 3-min. timer in control

 

 

 

5-min. timer in

 

 

F/S in control

 

 

2 sec., then reverses

 

 

 

 

 

 

 

 

 

 

 

in control

 

 

 

 

 

(S4 dip switch 1 & 2)

 

 

 

 

 

 

control

 

 

 

 

 

 

 

 

for 10/20 sec. (S4 dip

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

switch 3 & 4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Harvest Pump

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Timer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 or 50 sec.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F/S closed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F/S closed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F/S check

 

 

 

 

 

 

PM energized

 

 

 

F/S check

 

 

 

 

 

 

 

 

F/S open or freeze

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WV de-energized

 

 

 

 

 

 

 

 

 

 

 

Comp continues

WV energized

 

 

WV continues

 

 

 

 

Comp continues

 

timer terminates

 

 

Thermistor temperature

 

 

 

FM continues

 

 

 

 

 

 

 

 

Comp energized

 

 

FM continues

 

 

 

 

 

 

 

 

 

 

 

 

reaches 48°F (9°C)

 

 

 

 

 

 

 

 

 

 

 

 

HGV energized

 

 

 

 

F/S open

 

 

FM energized

 

 

 

 

 

 

 

 

PM continues

 

 

 

 

 

 

 

 

 

 

(3.9 kΩ or less).

 

 

 

 

 

 

 

 

 

 

 

 

PM de-energizes for 2 sec.,

 

 

 

 

 

 

HGV energized

 

 

 

 

 

 

 

 

LLV energized

 

 

 

 

 

 

 

 

 

 

 

 

Harvest timer starts.

 

 

 

 

 

 

 

 

 

 

 

 

then reverses for 10/20 sec.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HGV de-energized

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F/S open

 

 

 

 

 

 

LLV de-energized

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1601SAH/3 "G" Control

Sequence Flow Chart

Board

 

If F/S is open, compressor stops and cycle returns to 1-Minute Fill Cycle

25

Shutdown

 

 

 

 

1. Bin Full

 

 

 

 

and Restart

 

 

 

Within 10 sec. after ice contacts TBC

 

 

 

 

 

bulb, unit shuts down.

TBC Operation

 

 

 

 

 

 

 

 

2. Icemaker Off

All components de-energized.

3. Ice Level Lowered

No ice touching TBC bulb. Icemaker starts at "1. 1-Minute Fill Cycle."

To 1 above

Ice contacts TBC bulb

TBC-open

TBC closed NOTE: Green "BC CLOSED" LED on continuously

 

All components de-energized

when the K4 jumper is in place.

Legend:

Comp–compressor FM–fan motor F/S–float switch HGV–hot gas valve

LLV–liquid line valve PM–pump motor TBC–thermostatic bin control WV–inlet water valve

Components Energized when the Control Switch is in the "WASH" Position

The "WASH" position on the control switch is used when cleaning and sanitizing the unit. When in the "WASH" position, power is supplied to the pump motor. With the cleaning valve closed, the cleaner and sanitizer flow over the outside of the evaporator plate assembly. With the cleaning valve open, the cleaner and sanitizer flow over both the outside and the inside of the evaporator plate assembly.

Note: Close the cleaning valve after cleaning and sanitizing are complete, otherwise the unit will not restart when the control switch is placed in the "ICE" position.

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Contents Superior Degree Reliability Number Issued Revised Hoshizaki AMERICA, INC Contents Page Serious injury Important Safety InformationIndicates important information about the use and care UnitKM-1601SAH air-cooled Specifications IcemakerKM-1601SAH3 air-cooled Water Cooled Condenser KM-1601SWH water-cooledKM-1601SWH3 water-cooled 12.8 a 5 Min. Freeze AT 104F / WT 80F 100 1512 1482 1317 Crescent Cube 100 1475 1462 1261 Crescent Cube 100 1510 1426 1184 Crescent Cube 100 1520 1482 1273 Crescent Cube 100 1468 1465 1231 Crescent Cube URC-21F Condenser UnitURC-22F KM-1601SAH/3 air-cooled II. General Information ConstructionWRV KM-1601SWH/3 water-cooledKM-1601SRH/3 remote air-cooled Sequence Cycles and Shutdown Sequence of OperationPump-Out Cycle S4 Dip Switch Setting Pump-Out 1st Pump-Out FrequencyKM-1601SWH/3 and KM-1601SRH/3 E Control Board Harvest Cycle Sequence Flow Chart Cycle Steps Minute Fill Harvest Cycle KM-1601SWH/3 and KM-1601SRH/3 EControl Board Control Board Control Board LayoutPart Number 2A1410-01 factory 2A1410-02 service No. of Beeps Type of Alarm Every 3 sec LED Lights and Audible Alarm SafetiesSequence Step Energized Time LEDs are On Components Min Max AvgSetting Pump-Out Cycle Comp, FMR, WV Seconds Pump-out timer S4 Dip Switch Controls and AdjustmentsS5 Dip Switch Do Not Adjust S5 Dip Switch No Model Time seconds Inlet S4 Dip Switch Setting Time SecondsPump-Out Frequency Control S4 dip switch 5 S4 Dip Switch Setting Time Minutes Freeze Timer S4 dip switch 9Control Switch Tank III. Technical Information1601SWH/3 water-cooled Float Switch Vapor Service Valve High-Pressure Switch Wiring DiagramsKM-1601SAH3 air-cooled KM-1601SWH water-cooled, KM-1601SRH remote air-cooled Pressure-High* Switch ModelKM-1601SWH3 water-cooled, KM-1601SRH3 remote air-cooled Performance Data 1345 14562370 26101523 14922300 24101565 15552270 23901472 15832440 26401505 15642700 7851490 15312560 27101583 1511 15852580 29601498 15302490 2780Diagnostic Procedure IV. Service DiagnosisPage Frequency Diagnosis Control Correct LED Model Board Lighting Sequence Control Board CheckBin Control Check Float Switch Check Float Switch Check and CleaningFloat Switch Cleaning Thermistor Check Adjustment of Water Regulating Valve water-cooled modelNo Ice Production Diagnostic ChartsNo Ice Production Possible Cause Operating erratically Freeze Up Possible Cause Harvest Cycle Freeze UpFreeze Cycle Freeze Up Possible Cause Low Ice ProductionLow Ice Production Possible Cause Long Harvest Cycle Long Freeze CycleLow Ice Production Possible Cause Service for Refrigerant Lines Replacement of ComponentsRefrigerant Recovery Evacuation and Recharge R-404A BrazingPage Component Important Notes for Component ReplacementCleaning and Sanitizing Instructions VI. Cleaning and MaintenanceCleaning Procedure Sanitizing Procedure Following Cleaning Procedure Preparing the Icemaker for Long Storage MaintenanceDrain the water tank

KM-1601SWH/3, KM-1601SRH/3, KM-1601SAH/3 specifications

Hoshizaki has long been a trusted name in the world of commercial refrigeration and ice-making equipment. Among its offerings, the KM-1601SAH/3, KM-1601SRH/3, and KM-1601SWH/3 models stand out for their innovative features and robust design. These machines are integral for businesses that require reliable and efficient ice production, such as restaurants, hotels, and convenience stores.

At the core of these models is Hoshizaki's renowned Crescent Cube Technology, which produces clear, crescent-shaped ice that is ideal for both beverage service and food presentation. The unique shape of the ice ensures reduced melting rates, helping to maintain beverage temperature for longer periods while minimizing dilution. Additionally, the crescent ice is less prone to clumping, making it easier to dispense and ideal for high-volume use.

One of the key features of the KM-1601 series is its exceptional ice production capacity. Each model can produce up to 1,600 pounds of ice in a 24-hour cycle, making them suitable for heavy-demand environments. The machines are constructed with a durable stainless steel exterior, providing not only a sleek look but also enhanced resistance to corrosion and easy maintenance.

The KM-1601SAH/3 is designed with a built-in ice storage bin, allowing for seamless integration into various setups. Its state-of-the-art refrigeration system ensures optimal energy efficiency, which is crucial for businesses looking to manage operational costs. The KM-1601SRH/3 includes a self-contained design, simplifying installation and reducing the need for external ice storage solutions.

For users concerned with hygiene, these models boast advanced sanitation features. Hoshizaki's Antimicrobial Agent is incorporated into key components to inhibit the growth of bacteria and slime, ensuring cleaner ice production. The machines also feature easy-to-access panels for quick cleaning and maintenance, reducing downtime.

Another significant characteristic is their user-friendly controls, which simplify operation and monitoring of ice production. The built-in monitoring system alerts users to any potential issues, allowing for proactive maintenance and minimal disruption to service.

The KM-1601SWH/3 model further enhances the lineup with its energy-efficient design, lightweight construction, and compact footprint, making it perfect for establishments with limited space. Collectively, these models reflect Hoshizaki's commitment to innovation, efficiency, and reliability in ice-making technology, making them a top choice for businesses that require substantial ice production without compromising on quality or safety. Whether you need a powerful ice machine for a bar, restaurant, or convenience store, Hoshizaki’s KM-1601 series delivers performance that you can depend on.
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