Manuals+

HOSHIZAKI Instruction Manual

Modular Crescent Cuber

Models: KM-350MAJ, MWJ; KM-520MAJ, MWJ, MRJ; KM-660MAJ, MWJ, MRJ

Website: hoshizakiamerica.com

Issued: 7-23-2018 | Revised: 4-17-2019

IMPORTANT

This manual should be read carefully before the appliance is installed and operated. Read the warnings and guidelines contained in this manual carefully as they provide essential information for the continued safe use and maintenance of the appliance. Retain this manual for any further reference that may be necessary.

Important Safety Information

Throughout this manual, notices appear to bring your attention to situations which could result in death, serious injury, damage to the appliance, or damage to property.

⚠️ WARNING: Indicates a hazardous situation which could result in death or serious injury.

ℹ️ NOTICE: Indicates a situation which could result in damage to the appliance or property.

❗ IMPORTANT: Indicates important information about the installation, use, and care of the appliance.

⚠️ WARNING: The appliance should be destined only to the use for which it has been expressly conceived. Any other use should be considered improper and therefore dangerous. The manufacturer cannot be held responsible for injury or damage resulting from improper, incorrect, and unreasonable use. Failure to install, operate, and maintain the appliance in accordance with this manual will adversely affect safety, performance, component life, and warranty coverage and may result in costly water damage.

To reduce the risk of death, electric shock, serious injury, or fire, follow basic precautions including the following:

⚠️ WARNING, continued:

Additional Warning for Remote Models

ℹ️ NOTICE:

I. Specifications

A. Electrical and Refrigerant Data

The rating label and nameplate provide electrical and refrigerant data. The rating label can be seen by removing the front panel. The nameplate is located on the rear panel. For certification marks, see the nameplate. We reserve the right to make changes in specifications and design without prior notice.

1. KM-350M_J

Model Number Single Phase KM-350MAJ Single Phase KM-350MWJ
AC Supply Voltage 115/60/1 115/60/1
Compressor 115V 7.5RLA 50LRA 115V 6.8RLA 50LRA
Pump 120V 0.4FLA 10W 120V 0.4FLA 10W
Fan 115V 1.0FLA 1/15 HP ---
Other 115V 0.15A 115V 0.15A
Maximum Fuse Size 15 AMPS 15 AMPS
Max. HACR Breaker (USA Only) 15 AMPS 15 AMPS
Max. Circuit Breaker (Canada Only) 15 AMPS 15 AMPS
Minimum Circuit Ampacity 15 AMPS 15 AMPS
Design Pressure HI-467PSI LO-250PSI HI-427PSI LO-250PSI
Refrigerant 404A 1 LB. 3.4 OZ. 404A 11.6 OZ.

2. KM-520M_J

Model Number Single Phase KM-520MAJ Single Phase KM-520MWJ Single Phase KM-520MRJ
AC Supply Voltage 115/60/1 115/60/1 115/60/1
Compressor 115V 8.9RLA 54.5LRA 115V 7.8RLA 54.5LRA 115V 8.4RLA 54.5LRA
Pump 120V 0.5FLA 10W 120V 0.5FLA 10W 120V 0.5FLA 10W
Fan 120V 1.0FLA 1/15 HP --- 120V 3A MAX
Other 115V 0.15A 115V 0.15A 115V 0.15A
Maximum Fuse Size 20 AMPS 20 AMPS 20 AMPS
Max. HACR Breaker (USA Only) 20 AMPS 20 AMPS 20 AMPS
Max. Circuit Breaker (Canada Only) 20 AMPS 20 AMPS 20 AMPS
Minimum Circuit Ampacity 20 AMPS 20 AMPS 20 AMPS
Design Pressure HI-467PSI LO-250PSI HI-427PSI LO-250PSI HI-467PSI LO-250PSI
Refrigerant 404A 1 LB 10.8 OZ. 404A 12.7 OZ. R404A Total Refrigerant Charge with Hoshizaki Remote Condenser Unit URC-5F: 4 LB. 2.7 OZ.

3. KM-660M_J

Model Number Single Phase KM-660MAJ Single Phase KM-660WJ Single Phase KM-660MRJ
AC Supply Voltage 115/60/1 115/60/1 115/60/1
Compressor 115V 13.5RLA 77LRA 115V 11.7RLA 77LRA 115V 12.6RLA 77LRA
Pump 120V 0.5FLA 10W 120V 0.5FLA 10W 120V 0.5FLA 10W
Fan 120V 1.0FLA 1/15 HP --- 120V 3A MAX
Other 115V 0.15A 115V 0.15A 115V 0.15A
Maximum Fuse Size 20 AMPS 20 AMPS 20 AMPS
Max. HACR Breaker (USA Only) 20 AMPS 20 AMPS 20 AMPS
Max. Circuit Breaker (Canada Only) 20 AMPS 20 AMPS 20 AMPS
Minimum Circuit Ampacity 20 AMPS 20 AMPS 20 AMPS
Design Pressure HI-467PSI LO-250PSI HI-467PSI LO-250PSI HI-467PSI LO-250PSI
Refrigerant 404A 1 LB. 9.8 OZ. 404A 15.2 OZ. R404A Total Refrigerant Charge with Hoshizaki Remote Condenser Unit URC-5F: R404A 4 LB. 2.7 OZ.

B. Dimensions/Connections

1. Air-Cooled Models (MAJ)

Units: mm [in.]

Side View Description:

Rear View Description:

Bottom View Description:

ℹ️ NOTICE:

2. Water-Cooled Models (MWJ)

Units: mm [in.]

Side View Description:

Rear View Description:

Bottom View Description:

ℹ️ NOTICE:

3. Remote Models (MRJ)

Units: mm [in.]

Side View Description:

Rear View Description:

Bottom View Description:

ℹ️ NOTICE:

4. Remote Condenser Unit URC-5F (use with KM-520MRJ or KM-660MRJ)

Units: mm [in.]

Icemaker Model URC-5F Heat of Rejection AT 90°F (32°C) WT 70°F (21°C)
KM-520MRJ 6,200 BTU/h
KM-660MRJ 8,100 BTY/h

Top View Description:

Rear View Description:

ℹ️ NOTICE:

II. Installation and Operating Instructions

⚠️ WARNING:

A. Location

ℹ️ NOTICE:

B. Checks Before Installation

Model Number Bin Width Recommended Hoshizaki Ice Storage Bin
KM-350M_J 22" or Wider B-300 Series
KM-520M_J
KM-660M_J

For further options, contact your local Hoshizaki distributor.

ℹ️ NOTICE! Remote models must be connected to an appropriate remote condenser unit. The remote condenser units listed below are recommended. Connection to a different remote condenser unit will void the warranty unless Hoshizaki approves a different remote condenser unit for your specific application. For further details, contact your local Hoshizaki distributor.

Model Number Recommended Hoshizaki Remote Condenser Unit
KM-520MRJ URC-5F
KM-660MRJ

C. How to Remove Panels

See Fig. 1

(Fig. 1 shows a diagram illustrating panel removal for the KM-520MAJ model, indicating screws, front panel, top panel, right side panel, front insulation panel, and base cover.)

D. Setup

1. Dispenser Unit/Ice Storage Bin and Icemaker Setup

⚠️ WARNING:

  1. If mounting the icemaker on top of a dispenser unit, follow the dispenser unit's setup procedure. If mounting the icemaker on top of an ice storage bin, unpack the ice storage bin and attach the 4 adjustable legs provided (bin accessory) to the bottom of the ice storage bin.
  2. Position the dispenser unit/ice storage bin in its permanent location.
  3. If required, install an adapter kit or top kit. Contact your local Hoshizaki distributor for recommendations.
  4. Level the dispenser unit/ice storage bin in both the left-to-right and front-to-rear directions. If using an ice storage bin, adjust the ice storage bin legs to level.
  5. Place the icemaker on top of the dispenser unit/ice storage bin.
  6. 6a) Dispenser Unit: Follow the dispenser unit, adapter kit, or top kit instructions for securing the icemaker. If no instructions are available, secure the icemaker using the mounting brackets provided. Rotate the mounting brackets so that they fit flush to the dispenser unit. See Fig. 2a. Secure the mounting brackets to the icemaker with the bolts provided. Secure the mounting brackets to the dispenser unit with self-tapping screws (not provided). ℹ️ NOTICE! Use care to avoid damage to dispenser unit components when attaching the mounting brackets. For dispenser unit bin control setting see "II.J. Bin Control Check and Setting."
  7. 6b) Ice Storage Bin: Follow the ice storage bin, adapter kit, or top kit instructions for securing the icemaker. If no instructions are available, secure the icemaker using the 2 mounting brackets and the bolts provided. See Fig. 2b.

(Fig. 2a shows securing icemaker to dispenser unit with mounting brackets and self-tapping screws. Fig. 2b shows securing icemaker to ice storage bin with mounting brackets and bolts.)

E. Electrical Connection

⚠️ WARNING:

For All Models

Additional Warnings for Remote Models

ℹ️ NOTICE:

On remote models, the appliance must have power for a minimum of 4 hours prior to startup to prevent compressor damage.

(Fig. 3 shows a wiring diagram for electrical connection, indicating L (Black), N (White) connections to a junction box for 115V/60/1 power supply, with a warning about grounding and white lead connection.)

F. Water Supply and Drain Connections

See Figs. 4 through 6

⚠️ WARNING: Water supply and drain connections must be installed in accordance with applicable national, state, and local regulations.

ℹ️ NOTICE:

1. Icemaker

Icemaker Water Supply Inlet Minimum Icemaker Water Supply Line Size Icemaker Drain Outlet Minimum Icemaker Drain Line Size Condensation Drain Outlet
Connection Type 1/2" Female Pipe Thread (FPT) 1/4" Nominal ID Copper Water Tubing or Equivalent 3/4" Female Pipe Thread (FPT) 3/4" Nominal ID Hard Pipe or Equivalent 3/8" OD Hard Tube

(Fig. 4 illustrates water and drain connections for Air-Cooled and Remote Models. It shows the icemaker with water supply inlet, drain outlet, bin drain outlet, condensation drain outlet, and connections to shut-off valves and drain valves, with a note about a 2" (5 cm) air gap to the floor drain.)

2. Water-Cooled Condenser

a) Connection to an Open Drain System
Condenser Water Supply Inlet Minimum Condenser Water Supply Line Size Condenser Drain Outlet Minimum Condenser Drain Line Size
Connection Type 1/2" Female Pipe Thread (FPT) 1/4" Nominal ID Copper Water Tubing or Equivalent 3/8" Female Pipe Thread (FPT) 1/4" Nominal ID Hard Pipe or Equivalent

(Fig. 5 illustrates water and drain connections for Water-Cooled Models to an Open Drain System. It shows connections for icemaker water supply, condenser water supply, condenser drain, icemaker drain, condensation drain, and bin drain, with notes on shut-off valves, drain valves, vent tubes, and air gaps.)

b) Connection to a Closed Loop System
Condenser Water Supply Inlet Minimum Condenser Water Supply Line Size Condenser Return Outlet Minimum Condenser Return Line Size
Connection Type 1/2" Female Pipe Thread (FPT) 1/4" Nominal ID Copper Water Tubing or Equivalent 3/8" Female Pipe Thread (FPT) 1/4" Nominal ID Copper Water Tubing or Equivalent

(Fig. 6 illustrates water and drain connections for Water-Cooled Models to a Closed Loop System. It shows connections for icemaker water supply, condenser water supply, condenser return outlet, icemaker drain, condensation drain, and bin drain, with notes on shut-off valves, drain valves, vent tubes, and air gaps.)

G. Installation of Remote Condenser Unit for Remote Models

⚠️ WARNING:

1. Location

ℹ️ NOTICE:

The remote condenser unit must be positioned in a permanent site under the following guidelines:

(Fig. 7 shows diagrams illustrating maximum vertical distance between remote condenser unit and icemaker. Fig. 8 shows required clearance for remote condenser unit.)

2. Checks Before Installation

3. Setup

(Fig. 9 shows assembly of legs, bolts, nuts, and plates for setting up the remote condenser unit.)

4. Line Set Size and Refrigerant Charge

ℹ️ NOTICE: The icemaker, line set, and remote condenser unit must contain the same type of refrigerant. Mixing of refrigerants will result in improper operation and possible damage to the refrigeration system.

Hoshizaki Icemaker Line Set Size Charge Adjustment (R-404A)
Hoshizaki Remote Condenser Unit Up to 66' (20 m) Greater than 66' (20 m) Maximum 100' (30.5 m) Liquid Line Discharge Line Charge Adjustment
KM-520MRJ URC-5F 1/4" OD 3/8" OD Not Applicable 3/8" OD Add 16.5 oz. (468 g) to compensate for larger diameter line sizes, then add 0.4 oz. for each foot over 66 feet (40 g for each meter over 20 m). Write new total charge on icemaker's rating label.
KM-660MRJ 1/2" OD

5. Line Set Installation

Precharged factory line sets, available as optional equipment from Hoshizaki America, are recommended. For details, see "II.G.5.a) Factory Line Set Installation." Field fabricated line sets are allowed. For details, see "II.G.5.b) Field Fabricated Line Set Installation."

a) Factory Line Set Installation
  1. Route the factory line set (see "II.G.4 Line Set Size and Refrigerant Charge" for details) from the remote condenser unit to the icemaker. Leave a service loop behind the icemaker to allow the icemaker to be pulled out for service. See Fig. 10. Factory fabricated line sets are precharged and do not need to be evacuated. If the line set is too long or too short, see "II.G.5.a)(1) Factory Line Set Modification."

ℹ️ NOTICE:

  1. Connect the refrigerant lines to the appropriate male fittings on the remote condenser unit first and then at the icemaker. Make a proper connection as follows:
    • a. Remove the protective covers from the male fitting and female coupling.
    • b. Apply Polyol Ester (POE) refrigerant oil or Parker Super O Lube to the entire male fitting, including O-ring, diaphragm, and threads before making the connection. See Fig. 11. ℹ️ NOTICE! Do not use thread sealant on the fittings. Use POE refrigerant oil or Parker Super O Lube only. Couplings are one-time use only.
    • c. Make sure the male fitting and female coupling are properly aligned, then start the connection by hand to ensure that it is not cross threaded.
    • d. Place a backup wrench on the back of the female coupling, then tighten the connection with a wrench until it is tight. At this point, the nut has covered most of the threads on the male fitting. ℹ️ NOTICE! Failure to use a backup wrench may result in damage to the line set and possible refrigerant leaks.
    • e. Mark a reference line on the female coupling and the remote condenser unit or icemaker panel. Using a backup wrench on the back of the female coupling, tighten the six-sided nut of the female coupling an additional 1/6 turn. See Fig. 12. ℹ️ NOTICE! Confirm connection is free of leaks.
  2. If you lengthened the line set as outlined in "II.G.5.a)(1) Factory Line Set Modification" and it exceeds 66' (20 m), see "II.G.4. Line Set Size and Refrigerant Charge" for proper charging of the appliance.

(Fig. 10 shows routing of factory line set from remote condenser unit to icemaker with service loop. Fig. 11 illustrates male fitting components and application of POE oil or Super O Lube, with a warning against thread sealant. Fig. 12 shows tightening procedure for couplings with backup wrench.)

(1) Factory Line Set Modification
  1. Recover the line set charge through the Schrader access ports on the Parker quick connect couplings and store it in an approved container. Do not discharge the refrigerant into the atmosphere. Remove the extra line set length or add extra tubing. When adding extra tubing, insulate the additional copper tubes separately.
  2. Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the lines through the Schrader access ports on the Parker quick connect couplings (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). ⚠️ WARNING! Do not use R-404A as a mixture with pressurized air for leak testing.
  3. Evacuate through the Schrader access ports on the Parker quick connect couplings and charge with R-404A refrigerant vapor to a pressure of 15 to 30 PSIG. Go to step 2 in "II.G.5.a) Factory Line Set Installation."
b) Field Fabricated Line Set Installation
  1. Route the copper tube liquid line and copper tube discharge line (see "II.G.4 Line Set Size and Refrigerant Charge" for details) from the remote condenser unit to the icemaker. Leave a service loop behind the icemaker to allow the icemaker to be pulled out for service. See Fig. 11.

ℹ️ NOTICE:

  1. Insulate the two copper tubes separately.
  2. Install Parker quick connect couplings on each end. OS-QUICK, a universal quick connect coupling kit available as optional equipment from Hoshizaki America, is recommended. ℹ️ NOTICE! Before brazing, remove the Schrader valve core from the access port. When brazing, protect the coupling by using a wet cloth to prevent the coupling from overheating. Do not use silver alloy or copper alloy containing arsenic.
  3. Allow the coupling to cool, then replace the Schrader valve core.
  4. Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the lines through the Schrader access ports on the Parker quick connect couplings (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). ⚠️ WARNING! Do not use R-404A as a mixture with pressurized air for leak testing.
  5. Evacuate through the Schrader access ports on the Parker quick connect couplings and charge with R-404A refrigerant vapor to a pressure of 15 to 30 PSIG.

6. Electrical Connection

⚠️ WARNING:

ℹ️ NOTICE:

On remote models, the appliance must have power for a minimum of 4 hours prior to startup to prevent compressor damage.

1) Remove the remote condenser unit louver panel. See Fig. 13.

2) Remove the icemaker fan motor junction box cover. Remove the remote condenser unit junction box cover.

(Fig. 13 shows diagrams of the remote condenser unit louver panel and junction box covers, and the icemaker fan motor junction box cover.)

3) Install a ground wire from the icemaker fan motor junction box to the remote condenser unit junction box. Use wire of an appropriate gage and outdoor rating.

4) Install line and neutral wires from the fan motor leads in the icemaker fan motor junction box to the leads in the remote condenser unit junction box. Use wire of an appropriate gage and outdoor rating.

5) Replace the junction box covers and the louver panel in their correct positions.

7. Stacking Remote Condenser Unit

(Fig. 14 shows a diagram illustrating the stacking of two remote condenser units.)

H. Final Checklist

⚠️ WARNING: CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are securely in place after installation. Make sure that none have fallen into the dispenser unit/ice storage bin.

  1. Is the icemaker level?
  2. Is the icemaker in a site where the ambient temperature is within 45°F to 100°F (7°C to 38°C) and the water temperature within 45°F to 90°F (7°C to 32°C) all year around?
  3. Is there at least 6" (15 cm) clearance at rear, sides, and top of the icemaker?
  4. Have the shipping carton, tape, and packing material been removed from the icemaker? Is the cube guide in the correct position?
  5. Have all electrical and water connections been made? Do electrical and water connections meet applicable national, state, and local code and regulation requirements?
  6. Has the power supply voltage been checked or tested against the nameplate rating? Has a proper ground been installed to the icemaker? On remote models, has a proper ground also been installed to the remote condenser unit?
  7. Are the water supply and drain lines sized as specified? Are the water supply line shut-off valve(s) and drain valve(s) installed? Has the water supply pressure been checked to ensure a minimum of 10 PSIG and a maximum of 113 PSIG?
  8. Is the compressor snug on all mounting pads? Have the refrigerant lines been checked to make sure they do not rub or touch other lines or surfaces? Has the fan blade (if applicable) been checked to make sure it turns freely?
  9. On remote models:
    • Is the line set sized as specified, insulated, tightened, and free of leaks and kinks?
    • If the line set exceeds 66' (20 m), has the line set size (if applicable) and charge been adjusted as specified?
    • Has the appliance power supply been on for a minimum of 4 hours?
    • Is the remote condenser unit in a site where the ambient temperature is within -20°F to +122°F (-29°C to +50°C) all year around?
    • Is there at least 24" (61 cm) clearance around the remote condenser unit?
  10. Are all components, fasteners, and thumbscrews securely in place?
  11. Has the end user been given the instruction manual, and instructed on how to operate the appliance and the importance of the recommended periodic maintenance?
  12. Has the end user been given the contact information of an authorized service agent?
  13. Has the warranty registration been completed and submitted to the factory?

I. Startup

⚠️ WARNING: All parts are factory-adjusted. Improper adjustments may adversely affect safety, performance, component life, and warranty coverage.

ℹ️ NOTICE:

Additional Notice for Remote Models

  1. Open the water supply line shut-off valve(s).
  2. If not already removed, remove the front panel. See Fig. 15.
  3. Move the mode switch on the control box to the "ICE" position, then move the control switch to the "ON" position. Replace the front panel, then turn on the power supply, and allow the icemaker to operate. Note: If the icemaker fails to start, see "II.J. Bin Control Check and Setting."

(Fig. 15 shows the location of the front panel, control switch, and mode switch on the icemaker.)

  1. Allow the icemaker to operate for 10 min.
  2. After 10 min., turn off the power supply, then remove the front panel.
  3. Move the control switch to the "OFF" position, then remove the base cover and disconnect the rear pump tubing connection to drain the water tank. See Fig. 16.

(Fig. 16 shows the icemaker with base cover removed, indicating control switch, mode switch, water tank, and pump tubing connection to be disconnected for draining.)

  1. After the water tank has drained, reconnect the pump tubing.
  2. Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly after cleaning.
  3. Go to "II.J. Bin Control Check and Setting" and confirm bin control controller setting and bin control operation. ⚠️ WARNING! When used on dispenser units, the ice level must be set according to "II.J. Bin Control Check and Settings" to help prevent icemaker movement, water leakage, or ice overflow. Do not increase ice level above the recommended setting.
  4. After completing bin control check and confirming bin control controller setting, replace the base cover in its correct position. Move the control switch to the "ON" position. Replace all panels in their correct positions.
  5. Turn on the power supply to start the automatic icemaking process.
  6. On water-cooled models, confirm proper condenser drain outlet/return outlet temperature as outlined in "II.F.2. Water-Cooled Condenser."

J. Bin Control Check and Setting

An ultrasonic sensor is used as the bin control to control the level of ice in the dispenser unit/ice storage bin. The bin control controller setting must be set to match the application to avoid possible icemaker movement, water leakage, or ice overflow.

⚠️ WARNING:

ℹ️ NOTICE: Do not allow top kits or top kit risers (if applicable) to interfere with the bin control lens sensing area or the icemaker will not operate properly.

  1. Make sure that the power supply is off. If not already removed, remove the front, top, and right side panels. Then remove the base cover. Note: To access the control box from the front, remove the 2 remaining control box mounting screws, then slide the control box forward and rotate the control box for access. See Fig. 17.

(Fig. 17 shows diagrams illustrating access to the control box by removing panels and screws.)

  1. Determine the setting required for your application as detailed below.

ℹ️ NOTICE! The ice level must be lower than the top of the dispenser unit. Also, be sure the top kit or top kit riser (if applicable) are clear from the bin control lens sensing area.

Note: See the tables in Fig. 18 and 19 for ice detection distances. Icemaker restarts when ice level is 4 in. (102 mm) below ice detection level.

For Standard Ice Storage Bins, Hoshizaki DB and DM Dispenser Units, and Coca-Cola Freestyle® Dispenser Units

Application Bin Control Setting Ice Detection Distance From Bin Control Lens
Standard Ice Storage Bins 1 (Factory Default) 254 mm (10") Do not adjust dispensers to this setting.
Hoshizaki DB and DM Dispensers 2 305 mm (12")
Coca-Cola Freestyle® Dispensers 3 406 mm (16")
Optional Setting 4 508 mm (20")
5 610 mm (24")

⚠️ WARNING: Confirm that the final ice level location does not allow for icemaker movement, water leakage, or ice overflow.

(Fig. 18 shows diagrams illustrating bin control settings for different applications, including standard ice storage bins and Hoshizaki/Coca-Cola dispensers, with recommended settings and ice detection distances. It also shows the bin control controller and adjustment dial.)

For Non-Hoshizaki Dispenser Units

Bin Control Setting Ice Detection Distance From Bin Control Lens
1 (Factory Default) Do not adjust dispensers to this setting. 254 mm (10")
2 305 mm (12")
3 406 mm (16")
4 508 mm (20")
5 610 mm (24")

⚠️ WARNING: Confirm that the final ice level location does not allow for icemaker movement, water leakage, or ice overflow.

ℹ️ NOTICE: The ice level must be lower than the top of the dispenser unit. Also, be sure the top kit or top kit riser (if applicable) are clear from the bin control lens sensing area.

(Fig. 19 shows diagrams illustrating bin control settings for Non-Hoshizaki dispenser units, including preferred full bin level, icemaker restart level, and bin control controller settings with ice detection distances. It also shows the bin control controller and adjustment dial.)

  1. Move the mode switch on the control box to the "ICE" position, then move the control switch to the "ON" position. Turn on the power supply, and allow the icemaker to operate.
  2. Confirm the control board "BC OPEN/CLOSED" LED is off (bin empty) and the bin control controller "LED 1" LED is on (bin empty). See Fig. 20.
Ice Level in Bin Control Board "BC OPEN/CLOSED" LED Bin Control Controller "LED 1" LED
Empty OFF ON
Full ON OFF

(Fig. 20 shows diagrams of the control board and bin control controller, indicating the "BC OPEN/CLOSED" LED and "LED 1" LED status for empty/full bin conditions.)

  1. If the bin control controller LED 1 is off (indicating a full bin), the control board BC OPEN/CLOSED LED should be on (indicating a full bin). If so, correct any interference from the top kit or top kit riser (if applicable).
  2. Move the control switch to the "OFF" position, wait 2 min., then move the control switch to the "ON" position. 1 min. fill cycle begins. Place an object 5" to 7" (127 to 178 mm) away from the bin control lens. See Fig. 21. 15 sec. later, the icemaker shuts down. Remove the object from the bin control lens. 30 sec. later, the icemaker restarts. For bin control shutdown times per cycle, see the table below.
Cycle at Bin Control Activation Shutdown
1 min. Fill Cycle 15 sec. after activation.
Harvest Cycle If engaged 15 sec. or longer, at the end of harvest cycle.
Freeze Cycle 15 sec. after activation if activated at least 15 sec. before the 5-min. short cycle protection timer terminates. Otherwise, at the end of the next harvest cycle.

(Fig. 21 shows the icemaker with control switch, mode switch, compressor base, and bin control lens, illustrating the placement of an object to test bin control shutdown.)

  1. Once the icemaker restarts, move the control switch to the "OFF" position, then turn off the power supply.
  2. Return to step 10 in "I. Startup."

III. Maintenance

The appliance must be maintained in accordance with the instruction manual and labels provided. Consult with your local Hoshizaki Certified Service Representative about maintenance service.

⚠️ WARNING:

A. Maintenance Schedule

The maintenance schedule below is a guideline. More frequent maintenance may be required depending on water quality, the appliance's environment, and local sanitation regulations.

Frequency Area Task
Daily Scoop Clean the ice scoop using a neutral cleaner. Rinse thoroughly after cleaning.
Bi-Weekly Air Filters Inspect. Wash with warm water and neutral cleaner if dirty.
Monthly External Water Filters Check for proper pressure and change if necessary.
Icemaker Exterior Wipe down with a clean, soft cloth. Use a damp cloth containing a neutral cleaner to wipe off oil or dirt build up. Clean any chlorine staining (rust colored spots) using a non-abrasive cleanser.
Underside of Icemaker and Top Kits; Bin Door and Snout Wipe down with a clean cloth and warm water.
Yearly Icemaker and Dispenser Unit/Ice Storage Bin Clean and sanitize per the cleaning and sanitizing instructions provided in this manual. See "III.B. Cleaning and Sanitizing Instructions."
Water Supply Inlet Close the icemaker water supply line shut-off valve and drain the water system. Clean the water supply inlet screen.
Condenser Inspect. Clean if necessary by using a brush or vacuum cleaner. More frequent cleaning may be required depending on location.
Water Hoses Inspect the water hoses and clean/replace if necessary.

B. Cleaning and Sanitizing Instructions

The icemaker must be cleaned and sanitized at least once a year. More frequent cleaning and sanitizing may be required in some water conditions.

⚠️ WARNING:

ℹ️ NOTICE: To prevent damage to the water pump seal, do not leave the control switch in the "PUMP" position for extended periods when the water tank is empty.

Preparation

  1. Remove the front panel, then move the control switch to the "OFF" position. Make sure the mode switch is in the "ICE" position. After 3 minutes, move the control switch to the "ON" position and replace the front panel.
  2. Allow the appliance to run until the compressor energizes. Once the compressor energizes, allow the appliance to run for an additional 3 minutes, then remove the front panel. Move the control switch to the "OFF" position.
  3. Remove all ice from the dispenser unit/ice storage bin. ⚠️ WARNING! If on a dispenser unit, turn off the dispenser unit power supply after dispensing the ice.

Cleaning

  1. Move the mode switch to the "CLEAN" position, then move the control switch to the "ON" position (1 short beep occurs, then 3 seconds later 1 long beep occurs). Replace the front panel. The water tank drains and then fills.
  2. When the control board starts beeping (2 beep sequence), remove the front panel. Move the control switch to the "OFF" position.
  3. Remove the front insulation panel, then pour 10.4 fl. oz. (308 ml) of Hoshizaki "Scale Away" into the water tank. Replace the front insulation panel.
  4. Move the control switch to the "ON" position (1 short beep occurs, then 3 seconds later 1 long beep occurs). Replace the front panel. To avoid excessive foaming in the water tank, there is a 1 minute delay before circulation begins. After approximately 30 minutes of circulation, the icemaker performs 3 rinse cycles.
  5. When the control board starts beeping (5 beep sequence), remove the front panel. Move the control switch to the "OFF" position.
  6. In bad or severe water conditions, turn off the power supply, then remove, clean (cleaning solution = 5 oz. Hoshizaki "Scale Away" per gallon of warm water), rinse, and replace the cube guide, float switch, water supply tubes, spray tubes, and spray guides; turn on the power supply when complete. Otherwise, continue to step 10.

Sanitizing

  1. Confirm the mode switch is in the "CLEAN" position, then move the control switch to the "ON" position (1 short beep occurs, then 3 seconds later 1 long beep occurs). Replace the front panel. The water tank drains and then fills.
  2. When the control board starts beeping (2 beep sequence), remove the front panel. Move the control switch to the "OFF" position.
  3. Remove the front insulation panel, then pour 0.6 fl. oz. (18 ml) of an 8.25% sodium hypochlorite solution (chlorine bleach) into the water tank. Replace the front insulation panel.

❗ IMPORTANT! Use regular bleach with no additives. Using a bleach with additives causes excessive foaming during sanitizing, reducing the effectiveness of sanitizing.

  1. Move the control switch to the "ON" position (1 short beep occurs, then 3 seconds later 1 long beep occurs). Replace the front panel. To avoid excessive foaming in the water tank, there is a 1 minute delay before circulation begins. After approximately 30 minutes of circulation, the icemaker performs 3 rinse cycles.
  2. When the control board starts beeping (5 beep sequence), remove the front panel. Move the control switch to the "OFF" position.
  3. Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly after cleaning.
  4. Move the mode switch to the "ICE" position, then move the control switch to the "ON" position. Note: If on a dispenser unit, turn on the dispenser unit power supply.
  5. Replace all panels in their correct positions.

IV. Preparing the Appliance for Periods of Non-Use

ℹ️ NOTICE:

When the icemaker is not used for two or three days under normal conditions, it is sufficient to move the control switch to the "OFF" position. When storing the icemaker for an extended time or in sub-freezing temperatures, follow the instructions below.

1. Remove the water from the icemaker water supply line:

  1. Turn off the power supply, then remove the front panel.
  2. Move the control switch to the "OFF" position.
  3. Close the icemaker water supply line shut-off valve, then open the icemaker water supply line drain valve.
  4. Allow the line to drain by gravity.
  5. Attach a compressed air or carbon dioxide supply to the icemaker water supply line drain valve.
  6. Move the mode switch to the "ICE" position, then move the control switch to the "ON" position.
  7. Replace the front panel in its correct position, then turn on the power supply.
  8. Blow the icemaker water supply line out using the compressed air or carbon dioxide supply.
  9. Close the icemaker water supply line drain valve.

2. Drain the water tank:

  1. Turn off the power supply, then remove the front panel.
  2. Move the control switch to the "OFF" position.
  3. Remove the base cover, then disconnect one end of the pump tubing to drain the water tank. See Fig. 17. After the water tank has drained, reconnect the pump tubing.
  4. Remove all ice from the dispenser unit/ice storage bin. Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly after cleaning.
  5. Replace the base cover and the front panel in their correct positions.

3. On water-cooled models, remove the water from the water-cooled condenser:

  1. Make sure the power supply is off, then remove the front, top, and right side panels.
  2. Close the condenser water supply line shut-off valve. If connected to a closed loop system, also close the condenser return line shut-off valve.
  3. Open the condenser water supply line drain valve. If connected to a closed loop system, also open the condenser return line drain valve.
  4. Attach a compressed air or carbon dioxide supply to the condenser water supply line drain valve.
  5. Open the water regulating valve by using a screwdriver to pry up on the spring retainer underneath the spring. While holding the valve open, blow out the condenser using the compressed air or carbon dioxide supply until water stops coming out.
  6. Close the drain valve(s).
  7. Replace the panels in their correct positions.

V. Disposal

The appliance contains refrigerant and must be disposed of in accordance with applicable national, state, and local codes and regulations. Refrigerant must be recovered by properly certified service personnel.

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