Hoshizaki KM-520MRJZ Instruction Manual Download Page 1

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Models
KM-520MRJZ

KM-660MRJZ

Modular Crescent Cuber

Instruction Manual

Issued: 8-24-2021

hoshizakiamerica.com

Summary of Contents for KM-520MRJZ

Page 1: ...Models KM 520MRJZ KM 660MRJZ Modular Crescent Cuber Instruction Manual Issued 8 24 2021 hoshizakiamerica com ...

Page 2: ...oper installation is the responsibility of the installer Product failure or property damage due to improper installation is not covered under warranty Hoshizaki provides this manual primarily to assist qualified service technicians in the installation maintenance and service of the appliance Should the reader have any questions or concerns which have not been satisfactorily addressed please call s...

Page 3: ... or KM 660MRJZ 11 II Installation and Operating Instructions 12 A Location 12 B Checks Before Installation 13 C How to Remove Panels 13 D Setup 14 E Electrical Connection 15 F Water Supply and Drain Connections 16 G Remote Condenser Unit Installation 20 1 Location 20 2 Checks Before Installation 21 3 Setup 21 4 Line Set Size and Refrigerant Charge 21 5 Line Set Installation 22 a Line Set Up to 66 ...

Page 4: ...dance with applicable national state and local codes and regulations Electrical connection must be hard wired and must meet national state and local electrical code requirements Failure to meet these code requirements could result in death electric shock serious injury fire or damage The appliance requires an independent power supply of proper capacity See the nameplate for electrical specificatio...

Page 5: ... and disconnect if required must meet national state and local electrical code requirements Failure to meet these code requirements could result in death electric shock serious injury fire or damage NOTICE Follow the water supply drain connection and maintenance instructions carefully to reduce the risk of costly water damage In areas where water damage is a concern install in a contained area wit...

Page 6: ...nada 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 Z Single Phase Model Number KM 520MAJ KM 520MWJ KM 520MRJZ 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...

Page 7: ...P 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 w...

Page 8: ...J Units mm in Rear Side Bottom NOTICE Allow 6 15 cm clearance at rear sides and top for proper air circulation and ease of maintenance and or service should they be required The storage bin opening must match the bottom opening as in the illustration ...

Page 9: ...in NOTICE Allow 6 15 cm clearance at rear sides and top for proper air circulation and ease of maintenance and or service should they be required The storage bin opening must match the bottom opening as in the illustration Side Rear Bottom ...

Page 10: ... Rear Side Bottom NOTICE Allow 6 15 cm clearance at rear sides and top for proper air circulation and ease of maintenance and or service should they be required The storage bin opening must match the bottom opening as in the illustration ...

Page 11: ...M 520MRJZ 6 200 BTU hr KM 660MRJZ 8 100 BTU hr NOTICE Allow 24 61 cm clearance at front and rear for proper air circulation and ease of maintenance and or service should they be required 4 Remote Condenser Unit URC 5FZ use with KM 520MRJZ or KM 660MRJZ Units mm in Rear Top ...

Page 12: ...ormal operating ambient temperature must be within 45 F to 100 F 7 C to 38 C Normal operating water temperature must be within 45 F to 90 F 7 C to 32 C Operation of the icemaker for extended periods outside of these normal temperature ranges may affect icemaker performance The icemaker will not work at sub freezing temperatures To prevent damage to the water supply line drain the icemaker if the a...

Page 13: ...er unit or ice storage bin The ice storage bins listed below are recommended Model Number Bin Width Recommended Hoshizaki Ice Storage Bin KM 350M_J KM 520M_J Z KM 660M_J Z 22 or Wider B 300 Series For further options contact your local Hoshizaki distributor NOTICE Remote models must be connected to an appropriate remote condenser unit The remote condenser units listed below are recommended Connect...

Page 14: ...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 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 ...

Page 15: ...e supplied from the icemaker See II G 6 Electrical Connection Failure to properly ground the remote condenser unit could result in death or serious injury To reduce the risk of electric shock make all remote condenser unit connections before connecting the icemaker power supply NOTICE On remote models the appliance must have power for a minimum of 4 hours prior to startup to prevent compressor dam...

Page 16: ...External filters strainers or softeners may be required depending on water quality Contact your local Hoshizaki Certified Service Representative or local Hoshizaki distributor for recommendations A plumbing permit and services of a licensed plumber may be required in some areas The icemaker drain line dispenser unit ice storage bin drain line and water cooled condenser drain line if applicable mus...

Page 17: ... and drain line for the appliance to be pulled out for service Fig 4 Model Shown KM 520MAJ Air Cooled and Remote Models Icemaker Water Supply Inlet 1 2 FPT Icemaker Drain Outlet 3 4 FPT Vent Tube Bin Drain Outlet 3 4 FPT Minimum 3 4 Nominal ID Hard Pipe or Equivalent Minimum 1 4 Nominal ID Copper Water Tubing or Equivalent Be sure there is sufficient extra water supply line and drain line for the ...

Page 18: ...the condenser drain outlet temperature is not in the proper range use a flat blade screwdriver to rotate the adjustment screw on the water regulating valve until the temperature is in the proper range rotate counterclockwise to raise temperature or clockwise to lower temperature Icemaker Ice Storage Bin Water Cooled Models Connection to an Open Drain System Fig 5 Model Shown KM 520MWJ Icemaker Wat...

Page 19: ...mplete confirm the condenser return outlet temperature 5 minutes after a freeze cycle starts If the condenser return outlet temperature is not in the proper range use a flat blade screwdriver to rotate the adjustment screw on the water regulating valve until the temperature is in the proper range rotate counterclockwise to raise temperature or clockwise to lower temperature Shut Off Valve Icemaker...

Page 20: ...for extended periods outside of this normal temperature range may affect appliance performance The maximum line length for the standard line sizes and refrigerant charge is 66 20 m With larger line sizes and or additional refrigerant the maximum line length is 100 30 5 m For details see II G 4 Line Set Size and Refrigerant Charge The maximum vertical distance between the remote condenser unit and ...

Page 21: ... Line Set Size and Refrigerant Charge 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 Line Set Size and Refrigerant Charge Hoshizaki Icemaker Hoshizaki Remote Condenser Unit Line Set Up to 66 20 m Line Set Greater than 66 20 m Maximum 100 30 5 m ...

Page 22: ...m 1 Route the factory line set or appropriate size copper tubing When field fabricating insulate the copper tubes separately Leave a service loop behind the icemaker to allow the icemaker to be pulled out for service See Fig 7 Note The service loop is not considered an oil trap The maximum line length for the standard line sizes and refrigerant charge is 66 20 m With larger line sizes and or addit...

Page 23: ...r tube and the straight copper tube to the condenser unit liquid line service valve 8 Braze the condenser unit discharge line to the condenser unit discharge line service valve 9 Allow the service valves to cool then replace the Schrader valve cores Attach the gauge manifold hoses 10 Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the line set tubin...

Page 24: ...rts When brazing protect the service valve by using a wet cloth to prevent the service valve from overheating Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 5 Place the 3 8 end of a 1 2 3 8 copper slip reducer not provided in the icemaker discharge line service valve then place the discharge line copper tube into the 1 2 end of the 1 2 3 8 copper slip reduc...

Page 25: ...ING Do not use R 404A as a mixture with pressurized air for leak testing 13 After checking the line set for leaks vent the nitrogen charge from the line set 14 Evacuate the line set Allow the vacuum pump to pull down to a 29 9 Hg vacuum Evacuating period depends on pump capacity 15 After evacuation add the appropriate amount of additional R 404A See II G 4 Line Set Size and Refrigerant Charge for ...

Page 26: ...h or serious injury 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 Do not connect the fan motor leads in the icemaker to incoming power source Do not connect the fan motor leads in the icemaker together Do not allow the leads to contact the junct...

Page 27: ...g 5 Replace the junction box covers and the louver panel in their correct positions 7 Stacking Remote Condenser Unit 1 Install the lower remote condenser unit as described earlier in this section 2 Place the upper remote condenser unit on top of the lower remote condenser unit See Fig 11 3 Secure the upper remote condenser unit to the lower remote condenser unit with the 4 screws provided 4 Instal...

Page 28: ... 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 tou...

Page 29: ...ntrol been set to the proper setting for the application 2 Has the bin control operation been confirmed 3 Are all components fasteners and thumbscrews securely in place 4 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 5 Has the end user been given the contact information of an authorized s...

Page 30: ...the bin control lens sensing area or the icemaker will not operate properly 1 Make sure that the power supply is off Remove the front top and right side panels to allow access to the control board Also remove the base cover See Fig 12 Note If front access to the control box is required remove the control box mounting screws then slide the control box forward and rotate the control box for access S...

Page 31: ...4 WARNING Confirm that the final ice level location does not allow for icemaker movement water leakage or ice overflow Fig 14 Recommended Setting for Hoshizaki DB and DM Dispensers Recommended Setting for Coca Cola Freestyle Dispensers Icemaker Hoshizaki DB 200H Dispenser Unit Model Shown KM 520MAJ with DB 200H Model Shown KM 660MAJ with B 300SF Icemaker Standard Ice Storage Bin Turn dial to adjus...

Page 32: ... Measured Distance Shutdown Distance Measure from the bottom of the compressor base bin control lens to the preferred full bin level of ice refer to the dispenser instruction manual Icemaker Restart Level 4 102 mm below preferred full bin level of ice Set Bin Control Setting at or Below Maximum Full Bin Level of Ice Shutdown Position Shown Here Top Kit Icemaker Non Hoshizaki Dispenser Unit Bin Con...

Page 33: ...op kit risers if applicable to interfere with the bin control lens sensing area or the icemaker will not operate properly Additional Notice for Remote Models The icemaker must have power for a minimum of 4 hours prior to startup to prevent compressor damage 1 If not already removed remove the front top and right side panels and base cover Make sure the bin control setting has been adjusted as outl...

Page 34: ...ls in their correct positions 10 Turn on the power supply and allow the icemaker to operate for 10 min 11 After 10 min turn off the power supply then remove the front panel 12 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 18 13 After the water tank has drained reconnect the pump tubing 14 Clean ...

Page 35: ...nitation regulations Maintenance Schedule 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...

Page 36: ...ll 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 4 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 5 When the control board starts b...

Page 37: ...essive foaming during sanitizing reducing the effectiveness of sanitizing 13 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 14 When the cont...

Page 38: ...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 wa...

Page 39: ...ater 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...

Page 40: ...osal 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 ...

Page 41: ...41 618 Hwy 74 South Peachtree City GA 30269 USA P 770 487 2331 F 770 487 3360 hoshizakiamerica com 1A6537 010 ...

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