Related Manuals for Hoshizaki Modular Cubelet Serenity Series
Summary of Contents for Hoshizaki Modular Cubelet Serenity Series
- Page 1 Service Manual Modular Cubelet Serenity Series Models FS-1501MLJ-C with SRC-14J Number: 73239 hoshizakiamerica.com Issued: 8-1-2019...
- Page 2 Hoshizaki provides this manual primarily to assist qualified service technicians in the service of the appliance. Should the reader have any questions or concerns which have not been satisfactorily addressed, please call, send an e-mail message, or write to the Hoshizaki Technical Support Department for assistance. Phone: 1-800-233-1940; (770) 487-2331 Fax: 1-800-843-1056;...
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Page 3: Table Of Contents
IMPORTANT This manual should be read carefully before the appliance is serviced. Read the warnings and guidelines contained in this manual carefully as they provide essential information for the continued safe use, service, and maintenance of the appliance. Retain this manual for any further reference that may be necessary. CONTENTS Important Safety Information .................... - Page 4 VII. Technical Information ..................... 56 A. Specification and Performance Data Sheets ............... 56 B. Wiring Diagrams ......................57 1. FS-1501MLJ-C ....................... 57 2. SRC-14J Condensing Unit ..................58...
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Page 5: Important Safety Information
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. - Page 6 WARNING, continued • The icemaker requires an independent power supply of proper capacity. See the nameplate for electrical specifications. Failure to use an independent power supply of proper capacity can result in a tripped breaker, blown fuse, damage to existing wiring, or component failure.
- Page 7 NOTICE • Follow the instructions in this manual carefully to reduce the risk of costly water damage. • In areas where water damage is a concern, install in a contained area with a floor drain. • Install the appliance in a location that stays above freezing. Normal operating ambient temperature must be within 45°F to 100°F (7°C to 38°C).
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Page 8: Construction And Water/Refrigeration Circuit Diagram
I. Construction and Water/Refrigeration Circuit Diagram A. Construction 1. Icemaker Front View Top Panel Inlet Water Valve Float Switch Cutter, Extruding Head, Evaporator Evaporator Heater Power Cord Reservoir Thermostatic Expansion Valve Control Box Drier Drain Valve (infrared sensor) Front Panel Right Side Rear View Panel... -
Page 9: Condensing Unit
2. Condensing Unit Top Panel High-Pressure Switch Compressor Condenser Fan Motors Right Side Panel Headmaster (C.P.R.) Control Box Control Box Cover Receiver Suction Line Shutoff Valve Left Side Panel Liquid Line Louver Panel Shutoff Valve Safety Low-Pressure Control Low-Pressure Switch Switch... -
Page 10: Icemaking Unit
3. Icemaking Unit Cutter Extruding Head-Upper Bearing Seal Bolt Evaporator Heater (-C Models) Drip Pan Auger Insulation Cylinder Mechanical-Seal O-Ring Socket Head Cap Screw with Split Lock Washer Lower Housing Hex Bolt and Washer Spline Coupling Gear Motor... -
Page 11: Water/Refrigeration Circuit Diagram
B. Water/Refrigeration Circuit Diagram... -
Page 12: Sequence Of Operation And Service Diagnosis
II. Sequence of Operation and Service Diagnosis A. Sequence of Operation Flow Chart 1. Operation Flow Chart... -
Page 13: Shutdown Flow Chart
2. Shutdown Flow Chart... -
Page 14: Service Diagnosis
B. Service Diagnosis WARNING • The appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death, electric shock, serious injury, or fire. • Risk of electric shock. Use extreme caution and exercise safe electrical practices. •... - Page 15 2. Diagnostic Procedure This diagnostic procedure is a sequence check that allows you to diagnose the electrical system and components. Before proceeding, check for correct installation, proper voltage per appliance nameplate, and adequate water pressure (10 PSIG to 113 PSIG). Check that both the 24VAC circuit fuse and the 115VAC GM fuse are good.
- Page 16 6) Startup – CB "POWER OK" LED is on. Plug the icemaker back into the electrical outlet, then move the power switch to the "ON" position. Move the control switch to the "ICE" position. CB "POWER OK" LED and IS (BC1) green LED turn on. Diagnosis CB "POWER OK"...
- Page 17 8) Ice Purge Cycle – "GM" LED is on. 30-sec. GM delay timer terminates. GM, EH, and CCR energize. Once CCR energizes, 5VDC circuit closes through CCR terminal #3 (W/O) and terminal #5 (W/O) and CB K9 #5 (W/O) and K9 #6 (W/O). After 5VDC circuit closes, 5-min.
- Page 18 Condensing Unit Diagnosis: Confirm that CLPS closes. Once CLPS closes, MC energizes, energizing Comp and FMR. If not, check condensing unit 208-230VAC power supply, breakers, disconnects. Next, confirm 115VAC from CLPS (BR) wire to neutral (W). If 115VAC is not present, check wiring connections and power supply. CLPS: When PDS is energized, CLPS closes when refrigeration circuit low-side pressure reaches 29 PSIG.
- Page 19 10) Refill Cycle – "GM", "COMP", and "WTRIN" LEDs are on. LFS opens. WV energizes and FT starts. GM, CCR, EH, PDS, MC, Comp, and FMR continue. LFS closes. Nothing occurs at this time. Reservoir continues to fill until UFS closes. When UFS closes, WV de-energizes, 90-sec. FT terminates, and 30-sec. FZT starts.
- Page 20 11) Drain Cycle a) 1-in-1 Drain Cycle: DV energizes once every hour when the 1-in-1 drain cycle is activated (S1 dip switch 4 in the "OFF" position (factory default position)). GM and PDS continue. DV energizes for 2 sec. every hour. This setting is recommended for optimum icemaker performance.
- Page 21 LED turns on (flashing or steady), BC1 shutdown delay timer (S1 dip switch 1, 2, 3) starts. For a typical dispenser unit application, a 100-sec. shutdown delay is recommended. When used with a standard Hoshizaki storage bin, any shutdown delay setting is acceptable. See "III.B.2. BC1 (Infrared Sensor) Shutdown Delay (S1 dip switch 1, 2, 3)."...
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Page 22: Control Board Check
C. Control Board Check Before replacing a control board that does not show a visible defect and that you suspect is bad, always conduct the following check procedure. This procedure will help you verify your diagnosis. 1) Check CB S1 dip switch settings to assure that they are in the factory default position. For factory default settings, see "III.B.1. - Page 23 4) 5VDC Output Checks: CB K9 Connector: Control Switch (CB K9 #1 and #2) (open contacts for icemaking, closed contacts for drain), Jumper (CB K9 #3 and #4), Compressor Control Relay (K9 #5 and #6). Float Switch (K8 #5 (common), #6 (upper), and #7 (lower)). When checking 5VDC control voltage, always place the red positive test lead from the multimeter to the CB white K5 pin closest to the CB red K4 connector.
- Page 24 c. Float Switch (LFS and UFS) – CB K8 #5 (BK) (common), CB K8 #6 (R) (upper), and CB K8 #7 (DBU) (lower): 5VDC is present from CB white K5 connector pin closest to CB red K4 connector to CB K8 #5 (BK) (common) at all times. If not, replace CB.
- Page 25 7) Freeze Cycle "GM" and "COMP" LED are on: The 5-min. ice purge timer terminates or the ice purge cycle bypass button ("SERVICE") is pressed, "COMP" LED turns on. To bypass the 5-min. Ice Purge Cycle, press the "SERVICE" button on CB after the "GM"...
- Page 26 • K9 Connector (5VDC) High-Pressure Switch Control Switch (not used on this model) #1 & #2 (white/black) • "GM" LED • "COMP" LED #3 & #4 (yellow) (X2 Relay) (X1 Relay) Compressor Control Relay Circuit #5 & #6 (white/orange) • S2 "SERVICE" Button (Ice Purge Cycle Bypass) •...
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Page 27: Bin Control Check
D. Bin Control Check 1. Bin Control 1 (BC1) (infrared sensor) Check IMPORTANT Make sure CB S1 dip switch 7 is in the "ON" position. This allows the control board to monitor BC1 (infrared sensor) along with BC2 (mechanical) backup bin control. 1) Remove the front panel. - Page 28 8) CB "GM" and "COMP" LEDs are on. Use an object to cover BC1 lens at the bottom of the icemaker. If the bottom of the icemaker is not accessible in your application, remove the thumbscrew securing BC1 housing, remove the housing from the base, then cover BC1 lens.
- Page 29 2. Bin Control 2 (BC2) (mechanical backup) Check When the spout cover is closed, BC2 is closed and the icemaker produces ice. With S1 dip switch 7 placed in the "ON" position, BC2 is used as a backup bin control safety. When BC1 fails to shut down the icemaker and ice fills the chute and disengages the spout cover, BC2 opens and CB immediately shuts down the icemaker and sounds a 9-beep alarm.
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Page 30: Power Switch And Control Switch
E. Power Switch and Control Switch The power switch and control switch are used to control the operation of this appliance. They are located on the control box. 1. Power Switch The power switch has 2 positions, "OFF" and "ON." When the power switch is in the "OFF"... -
Page 31: Float Switch Check And Cleaning
F. Float Switch Check and Cleaning 1. Float Switch Check 1) Remove the front panel, then move the power switch to the "OFF" position. 2) Move the control switch to the "DRAIN" position. 3) Move the power switch to the "ON" position. 4) Allow the water to drain from the evaporator, then move the power switch to the "OFF"... - Page 32 2) Unplug the appliance from the electrical outlet. 3) Remove FS assembly from the reservoir cover. See Fig. 7. 4) Wipe down FS assembly with a mixture of 1 part Hoshizaki "Scale Away" and 25 parts warm water. Rinse the assembly thoroughly with clean water.
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Page 33: Diagnostic Tables
G. Diagnostic Tables Before consulting the diagnostic charts, check for correct installation, proper voltage per appliance nameplate, and adequate water supply. Check control board using the steps in "II.C. Control Board Check." 1. No Ice Production No Ice Production - Possible Cause Startup 1. - Page 34 Ice Purge Cycle 1. Control Board a) No power to gear motor. b) No power to compressor control relay. 2. Gear Motor a) Blown fuse. b) Internal protector open. c) Defective. Freeze Cycle 1. Compressor Control Relay a) No voltage from gear motor. b) Defective.
- Page 35 Shutdown 1. Bin Control 1 (infrared sensor) a) Dirty lens. See "II.D. Bin Control Check." b) Defective. c) Control board (no power to IS). 2. BC2 (Mechanical Backup) See a) Defective. "II.D. Bin Control Check." 3. Control Board a) Control board dip switches set incorrectly. b) In alarm.
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Page 36: Controls And Adjustments
III. Controls and Adjustments A. Control Board • A Hoshizaki exclusive control board is employed in Hoshizaki Modular Flakers. • All models are pre-tested and factory adjusted. • For a control board check procedure, see "II.C. Control Board Check." NOTICE •... -
Page 37: Control Board Layout
1. Control Board Layout • K9 Connector (5VDC) High-Pressure Switch Control Switch (not used on this model) #1 & #2 (white/black) • "GM" LED • "COMP" LED #3 & #4 (yellow) (X2 Relay) Compressor Control Relay (X1 Relay) Circuit #5 & #6 (white/orange) •... -
Page 38: Led Lights And Audible Alarm Safeties
2. LED Lights and Audible Alarm Safeties At startup, CB green "POWER OK" LED turns on immediately to indicate proper control voltage and will remain on unless a control voltage problem occurs. For further details, see "II.B. Service Diagnosis." Energized Sequence Step Components Min. -
Page 39: Controls And Adjustments
Dip switches are factory set. Failure to maintain factory settings may adversely affect performance and warranty coverage. For more information, contact your Hoshizaki Certified Service Representative. 1. Default Dip Switch Settings The S1 dip switch settings are factory-set to the following positions: S1 Dip Switch S1 Dip Switch No. -
Page 40: Bc1 (Infrared Sensor) Shutdown Delay (S1 Dip Switch 1, 2, 3)
For a typical dispenser unit application, a 100-sec. shutdown delay is recommended. When used with a standard Hoshizaki storage bin, any shutdown delay setting is acceptable. WARNING! Increasing the shutdown delay allows a higher level of ice in the dispenser unit/ice storage bin before shutdown. -
Page 41: Bin Control Selector (S1 Dip Switch 7)
5. Bin Control Selector (S1 dip switch 7) The appliance is factory set for infrared sensor bin control operation. No adjustment is required. In the factory default position (S1 dip switch 7 in the on position), the gear motor delay after the upper float switch closes is 30 sec. WARNING! Do not place S1 dip switch 7 in the off position. -
Page 42: Refrigeration Circuit And Component Service Information
IV. Refrigeration Circuit and Component Service Information WARNING • This appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death, electric shock, serious injury, or fire. • Before Servicing: FS: Move the icemaker's power switch to the "OFF" position. Unplug the icemaker from the electrical outlet. - Page 43 1. Refrigerant Recovery Using proper refrigerant practices, recover the refrigerant. Recover via the service valves. Store the refrigerant in an approved container. Do not discharge the refrigerant into the atmosphere. 2. Brazing WARNING • R-404A itself is not flammable at atmospheric pressure and temperatures up to 176°F (80°C).
- Page 44 Remember to loosen the connection and purge the air from the hose. See the rating label inside the icemaker for the required refrigerant charge. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets AHRI Standard 700 (latest edition) be used.
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Page 45: Component Service Information
B. Component Service Information NOTICE • When replacing a component listed below, see the notes to help ensure proper operation. • When replacing evaporator assembly and water circuit components, make sure there are no water leaks after the repair is complete. •... - Page 46 Removable Rubber Drip Pan Evaporator Assembly FS-1501MLJ-C Cutter Upper Bearing (pressed into auger) Extruding Head Auger Evaporator Heater Flange Seal Bolt O-Ring Drip Pan Socket Head Cap Screw and Split Lock Washer Mechanical Seal O-Ring Hex Bolt and Washer Lower Bearing (pressed into lower housing) Truss Head Screw Lower Housing...
- Page 47 1. Upper Bearing Wear Check To ensure that the bearing inside the extruding head does not exceed the wear tolerance of .02", follow the instructions below. 1) Remove the front panel. Move the power switch to the "OFF" position, then unplug the unit from the electrical outlet.
- Page 48 IMPORTANT! Seal Bolt Removal and Installation Instructions: Seal bolts must be replaced once removed because seal material is one-time use only. If new seal bolts do not have preapplied threadlocker, apply Loctite 243 or equivalent threadlocker to seal bolt threads. •...
- Page 49 7) Replace the removed parts in the reverse order of which they were removed. Note: Be sure to use new seal bolts. See "Seal Bolt Removal and Installation Instructions" above. 8) Replace the top and side panels in their correct positions. 9) Move the control switch to the "ICE"...
- Page 50 16) Evacuate the system, and charge it with refrigerant. See the rating label inside the icemaker for the required refrigerant charge. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 (latest edition) be used.
- Page 51 8) Remove the O-ring and mechanical seal from the housing. If only replacing the mechanical seal, proceed to step 15. NOTICE! To help prevent water leaks, be careful not to damage the surfaces of the O-ring or mechanical seal. NOTICE To help prevent water leaks, be careful not to damage the surfaces of the O-ring or mechanical seal.
- Page 52 6) Disconnect the gear motor wiring, then remove the gear motor. 7) Remove the gear motor bracket and spline coupling from the old gear motor and place on the new gear motor. 8) Install the new gear motor and reconnect the electrical wires. 9) Replace the removed parts in the reverse order of which they were removed.
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Page 53: Maintenance
V. 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 • Only qualified service technicians should service the appliance. • To reduce the risk of electric shock, do not touch the icemaker power switch or control switch with damp hands. - Page 54 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. Maintenance Schedule Frequency Area Task Daily Scoop Clean the ice scoop using a neutral cleaner. Rinse thoroughly after cleaning.
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Page 55: Disposal
VI. 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. -
Page 56: Technical Information
VII. Technical Information A. Specification and Performance Data Sheets 1. FS-1501MLJ-C with SRC-14J Specification Sheet 115/60/1 AC SUPPLY VOLTAGE AMPERAGE 3.6 A 15 A MINIMUM CIRCUIT AMPACITY 15 A MAXIMUM FUSE SIZE ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F ELECTRIC W (kWH/100 lbs.) 2196 (4.75) 2128 (3.67) POTABLE WATER... -
Page 57: Wiring Diagrams
B. Wiring Diagrams 1. FS-1501MLJ-C DIP SWITCH S1 No. 1 No. 2 No. 3 No. 4 No. 5 No. 6 No. 7 No. 8 No. 9 No. 10 FS-1501-MLJ-C WIRE COLOR CODE (GR) BLACK VIOLET 115-120/60/1 BROWN WHITE DARK BLUE YELLOW GREEN W/BK WHITE/BLACK... -
Page 58: Src-14J Condensing Unit
2. SRC-14J Condensing Unit 208-230/60/1 (3 WIRE WITH NEUTRAL) WIRE COLOR CODE BK -BLACK BR -BROWN START RUN CAP. DBU -DARK BLUE COMP. RELAY GR -GREEN (30 MFD) GY -GRAY START CAP LBU -LIGHT BLUE (145-174MFD) -ORANGE -PINK -RED -VIOLET -WHITE (BR) -YELLOW...