Hoshizaki KM-1300MAH User's Manual
Contents
1. 33 b KM 1300MWH Water cooled Serial 100001 to M10155C 34 c KM 1300MWH Water cooled Serial No M10156D 35 d KM 1300MRH Remote air cooled esses 36 IV SERVICE DIAGNOSIS E 37 NO ICE PRODUCTION BEE 37 2 EVAPORATOR IS FROZEN UP 40 SOW ICE PRODUCTION EE 40 A ABNORMAL ICE EEN 41 EENEG 41 V REMOVAL AND REPLACEMENT OF 42 1 SERVICE FOR REFRIGERANT LINES entes 42 a REFRIGERANT RECOVERY 42 b EVACUATION AND RECHARGE IR AOAAI n 42 E TEE 43 3 REMOVAL AND REPLACEMENT OF COMPRESSOR 44 4 REMOVAL AND REPLACEMENT OF DRIER ees 45 5 REMOVAL AND REPLACEMENT OF EXPANSION 46 6 REMOVAL AND REPLACEMENT OF HOT GAS VALVE NID TINIE VALVE NER EON 47 7 REMOVAL AND REPLACEMENT OF EVAPORATOR 48 8 REMOVAL AND REPLACEMENT OF WATER REGULATING VALVE WATER COOLED MODEL 49 9 ADJUSTMENT OF WATER REGULATING VALVE WATER COOLED MODEL ONLY s t rie t EE ut ed 50 10 REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE REGULATOR C P R REMOTE AIR COOLED MODEL ONLY 51 11 REMOVAL AND REPLACEMENT OF THERMISTOR 52 12 REMOVAL AND R2. Switch Nos 1 and 2 Used for adjustment of the Defrost Timer The Defrost Timer starts counting when the Thermistor reads a certain temperature at the Evaporator outlet Switch Nos 3 and 4 Used for adjustment of the Drain Timer When a freeze cycle is completed the Pump Motor stops and the icemaker resumes operation in 2 seconds Then the Pump Motor drains the Water Tank for the time determined by the Drain Timer The Drain Timer also determines the time to restrain completion of a defrost cycle i e the minimum defrost time Switch Nos 5 and 6 Used for adjustment of the Drain Counter The Pump Motor drains the Water Tank at the frequency determined by the Drain Counter Switch Nos 7 and 8 Used only for checking the Controller Board Usually set in OFF position Switch Nos 9 and 10 Freeze Timer E Control Board Check only OFF Used for adjustment of Freeze Timer The Freeze Timer determines maximum COS Drain Counter freeze cycle time Upon termination of SEA Freeze Timer machine initiates the RIES 7 harvest cycle After 2 consecutive timer terminations machine will shut down possibly indicating a problem 21 1 Defrost Control A thermistor Semiconductor is used for a defrost control sensor The resistance varies depending on the Suction Line temperatures The Thermistor detects the temperature of the Evaporator outlet to start the Defrost Timer No adjustment is r
3. i Hot Gas Solenoid Valve Continues to open in freeze cycle and High Temperature Safety operates Check for power off in freeze cycle and replace j Water Supply Line Water supply off and water supply cycle does not finish Check and get recommended pressure Condenser water pressure too low or off and Pressure Control opens and closes fre quently to finally operate High Temperature Safety Check and get recommended pressure k Water Solenoid Mesh filter or orifice gets clogged and water supply cycle does not finish Clean Coil winding opened Replace Wiring to Water Valve Check for loose connection or open and replace PROBLEM POSSIBLE CAUSE I Controller Board 1 Defective REMEDY See 11 2 CHECKING CONTROLLER BOARD Move to ON position 2 Check for continuity and replace Place in position 2 Check and replace m Interlock Switch Cleaning Valve OFF position Bad contacts Connector disconnected Leads opened or defective switch Float does not move freely Defective 2 Water continues to be supplied and the ice maker will not start 3 Compressor a Float switch Clean or replace Replace b Controller Board a Wash Switch WASH position Bad contacts Dirty Air Filter or Condenser Ambient or condenser wat
4. crasse DEET WT E ca if DE EE Sw i e 6 E 5 Pump Meter ost A e wo i e Fan Motor i Valve a EE EE Fan Motor Condenser Unit OFF Water Valve We SE min 6 min RS Eeer T gu m 1 The Pump Motor waits for 2 seconds before starting a drain cycle See Il 2 d CONTROLS AND ADJUSTMENTS 2 The icemaker does not complete a defrost cycle in the first 2 or 3 minutes See Il 2 d CONTROLS AND ADJUSTMENTS 32 4 PERFORMANCE DATA a KM 1300MAH Air cooled APPROXIMATE ICE AMBIENT TEMP WATER TEMP F C PRODUCTION PER 24 HR FC 70 21 90 32 70 21 80 27 90 32 Ibs day _kg day 100 38 APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 Note Pressure data is recorded first 5 minutes in freezing cycle The data not in bold should be used for reference We reserve the right to make changes in specifications and design without prior notice 33 b KM 1300MWH Water cooled Serial 100001 to M10155C APPROXIMATE ICE AMBIENT TEMP ERCP CFPC
5. 5 2 2 gt E S 5 B ox 55 i s 5 38 c CS S 8 5 804 2 2 L ped 5 er UNTEN N Q m Cl Iu NANN 2 SSS 20 Compressor VIEWA 9 Water Pump S Float Switch Bin Control Control Switch Spray Tube 8 11 GENERAL INFORMATION 1 CONSTRUCTION a KM 1300MAH Air cooled Control Box b KM 1300MWH Water cooled Water Supply Inlet Spray Tube Hot Gas Valve Junction Box gt gt 9 c OWA ANN AA NES Controi Box 3 SN a E SV Gest Water Regulator Condenser SEAN gt Line Valve Y N Drier WC oe V Water Pump Float Switch 8 Compressor E m Control Switch VIEW A 12 c KM 1300MRH Remote air cooled Spray Tube Expansion Valve Control Box il Receiver Tank RN A 2 22 WV 9 4 Float Switch lt lt Water Pump Bin Control Control Switch vewa 2 CONTROLLER BOARD a SOLID STATE CONTROL 1 A HOSHIZAKI exclusive solid state control is employed in KM 1300MAH KM 1300MWH and KM 1300MRH Modular Crescent Cubers 2 A Printed Circuit Board hereafter called Controller Board includes a stable and high
6. to the K1 connector If there is a white wire place the switch in the C position If this switch is placed in the wrong position either the compressor contactor will remain ener gized with the control switch OFF or the unit will not start The dip switches should be adjusted per the adjustment chart published in the Tech Specs book 7 amp 8 must remain in the OFF position Dip Switch Output Test Switch Used to test Relays Alarm Reset Switch 0008810 OUTPUT TEST ooo HE d De o Je Backup Freeze Timer LED Connector K3 Defrost Control Thermistor Backup Defrost Timer LED Connector K4 Open not connected Alarm Buzzer x Microprocessor Will indicate Board revision level on attached label last 2 digits 2 Power LED a Lights up 02 Connector K5 when power 2 2G Float Switch is supplied co to the Board Part Number Connector 1 Pins 1 through 10 1 9 Magnetic Contactor 2 Hot Gas Valve 3 Line Valve 4 Pump Motor icemaking 5 Pump Motor drain 6 Water Valve 7 10 Power line Bin Control 8 Open a 3 I l 1 LED3 P F 5 amp i c m eR e 020 Sg 2 09 S switch for Board Indicate which and ALPINE Board Relays are energized Service Boards only
7. HOSHIZAKI MODULAR CRESCENT CUBER MODEL KM 1300MAH KM 1300MWH KM 1300MRH SERVICE MANUAL IMPORTANT Only qualified service technicians should attempt to service or maintain this icemaker No service or maintenance should be undertaken until the technician has thoroughly read this Service Manual HOSHIZAKI provides this manual primarily to assist qualified service technicians in the service and maintenance of the icemaker Should the reader have any questions or concerns which have not been satisfactorily addressed please call or write to the HOSHIZAKI Technical Support Department for assistance HOSHIZAKI AMERICA INC 618 Highway 74 South Peachtree City GA 30269 Attn HOSHIZAKI Technical Support Department Phone 1 800 233 1940 Technical Service 770 487 2331 Fax 770 487 3360 NOTE To expedite assistance all correspondence communication MUST include the following information Model Number Serial Number Complete and detailed explanation of the problem Please review this manual It should be read carefully before the icemaker is serviced or maintenance operations are performed Only qualified service technicians should service and maintain the icemaker This manual should be made available to the technician prior to service or maintenance CONTENTS PAGE l SPECIFICATIONS EE 5 1 KM 1300MAH Air cooled EE 5 2a KM 1300MWH Water cooled Serial No LOOOO1F to 10155 6
8. See the above step 5 15 Replace the tubing and the Insulation Panel in their correct positions 16 Move the Control Switch to the ICE position 59 17 Close the Cleaning Valve Note The icemaker will not operate unless the Cleaning Valve is completely closed 18 Replace the Front Panel in its correct position 19 Turn on the power supply to fill the Water Tank with water 20 Turn off the power supply after 3 minutes 21 Remove the Front Panel and fully open the Cleaning Valve 22 Move the Control Switch to the Wash position 23 Replace the Front Panel in its correct position 24 Turn on the power supply to rinse off the cleaning solution 25 Turn off the power supply after 5 minutes 26 Remove the Front Panel and Insulation Panel 27 Drain the Water Tank See the above step 5 28 After the tank has drained replace the removed parts in their correct positions Note Do not replace the Insulation Panel when you proceed to b SANITIZING PROCEDURE 29 Repeat the above steps 16 through 28 three more times to rinse thoroughly Note If you do not sanitize the icemaker go to step 9 in b SANITIZING PROCEDURE b SANITIZING PROCEDURE Following Cleaning Procedure 1 Dilute a 5 25 Sodium Hypochlorite solution chlorine bleach with water Add 2 5 fl oz of sanitizer to 5 gal of water 2 Remove the Insulation Panel if it is in its normal position 3 Pour the sanitizing solution into the W
9. 2b KM 1300MWH Water cooled Serial No 101560 7 3 KM 1300MRH Remote air cooled E 8 4 CONDENSING UNIT 12 9 ioi ceti ete ena EES 11 T CONSTRUCTION a iniit ra RR PIE Ec RR e C EA OE 11 K M 1300 MAH gege eebe Ae 11 b KM 1300MWH Water coole 12 c KM 1300MRH Remote 13 2 EHNEN 14 a SOLID STATE CONTROL 14 b CONTROLLER BOARD BEE 14 eo SEQUENCE EE 18 d CONTROLS AND 21 e CHECKING CONTROLLER BOARD 24 EN 26 1 WATER CIRCUIT AND REFRIGERANT CIRCUIT 26 a KM 1300MAH Air cooled AE 26 b KM 1300MWH 27 c KM 1300MRH Remote 28 2 WIRING UE Eeer eebe 29 a KM 1300MAH Air cooled KM 1300MWH Water cooled 29 b KM 1300MRH Remote air cooled 30 3 KN REES 31 4 PERFORMANCE DATA EE 33
10. 70 21 80 27 90 32 Ibs day kg day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 15 560 BTU h AT 90 F 32 C WT 70 F 21 C TOTAL HEAT OF REJECTION FROM COMPRESSOR 2 650 BTU h AT 90 F 32 C WT 70 F 21 C WATER FLOW FOR CONDENSER 92 gal h AT 100 F 38 C WT 90 F 32 C PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG Note Pressure data is recorded at 5 minutes into freezing cycle The data not in bold should be used for reference only We reserve the right to make changes in specifications and design without prior notice 34 c KM 1300MWH Water cooled Serial M10156D APPROXIMATE ICE AMBIENT TEMP WATER TEMP F C PRODUCTION PER 24 HR FPC 70 21 70 21 80 27 90 32 Ibs day _kg day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION
11. Min Freeze 104 F WT 80 F DE cee eee ONT 70 80 Crescent Cube 28 6 Ibs 13 kg 1440 pes N A 90 70 F 70 50 F 2648 6 0 2256 4 2 342 32 3 745 57 8 30 x 27 3 8 x 41 1 2 762 x 695 x1055 mm Stainless Steel Galvanized Steel Rear Net 290 Ibs 132 kg Shipping 322 Ibs 151 kg Permanent Connection 1 2 FPT Outlet 3 4 FPT 3 8 OD Pipe Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostat Hermetic CS 14K6E PF V 279 Air cooled Fin and tube type Vertical type Stainless Steel and Copper Thermostatic Expansion Valve R 404A 41 18000 High 467 PSIG Low 230 PSIG High Voltage Cut out Internal Auto reset Overload Protector Internal Auto reset High Pressure Control Switch Float Switch eaa efferent ness vty ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS N A Storage Bin VOLTAGE RANGE 187 253 V AMBIENT TEMP 45 100 WATER SUPPLY TEMP 45 90 WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 2a KM 1300MWH Water cooled Serial No 100001 to M10155C AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXI
12. PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 15185 BTU h AT 90 F 32 C WT 70 F 21 C TOTAL HEAT OF REJECTION FROM COMPRESSOR 2635 BTU h AT 90 F 32 C WT 70 F 21 WATER FLOW FOR CONDENSER 74 gal h AT 100 F 38 C WT 90 F 32 C PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG Note Pressure data is recorded first 5 minutes in freezing cycle The data not in bold should be used for reference We reserve the right to make changes in specifications and design without prior notice 35 d KM 1300MRH Remote air cooled APPROXIMATE ICE AMBIENT TEMP WATER TEMP F C CFPC PRODUCTION PER 24 HR 70 21 80 27 90 32 1183 Ibs day _kg day 400 38 1159 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER CONSUMPTION PER 24 HR gal day FREEZING CYCLE TIME min HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE PSIG kg cm G SUCTION PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 18 300 BTU h AT 90 F 32 C WT 70 F 219 TOTAL HEAT OF REJECTION FROM COMPRESSOR 2910 BTU h AT 90 F 32 C WT 70 F 21 CONDENSER VOLUME 132 CU IN URC 12F Note Pressure data is recorded first 5 minutes in freezing cycle The data not in bold should be used for reference We reserve the right to make changes in specifications and desi
13. Transformer Connector Control Products HOS 001A Board 17 c SEQUENCE 1st Cycle 1 Unit energized and Control Switch to ICE position Water supply cycle starts 2 After 1 minute Defrost cycle starts WATER VALVE PUMP FAN amp LINE VALVE 5 Afterthe first 5 minutes in freeze cycle Ready to complete freeze cycle when Float Switch circuit opens IMPORTANT Board never accepts freeze completion signal within the first 5 minutes in freeze cycle 18 WATER VALVE HOT GAS VALVE FREEZE 3 Thermistor reads 48 F Defrost Timer starts counting Water Valve opening is limited to 6 minutes 4 Defrost Timer stops counting Defrost cycle is completed and freeze cycle starts IMPORTANT 1 Board never accepts defrost completion signal within the first 2 minutes in defrost cycle 2 Defrost cycle time is limited to 20 minutes even if Defrost Timer does not stop counting 2nd Cycle and after with pump drain IMPORTANT Freeze cycle time is limited to 60 minutes even if Float Switch does not open 1 Float Switch opens and signals to complete freeze cycle Drain Timer starts counting 2 Drain Timer stops counting Pump drain is completed 3 Thermistor reads 48 F Defrost Timer starts counting Water Valve opening is limited to 6 minutes 5 After the first 5 minutes in freeze cycle Defrost Timer stops counting Ready to complete freeze cy
14. Valve R 404A 2 Ibs oz 10009 High 427 PSIG Low 230 PSIG High Voltage Cut out Internal Auto reset Overload Protector Internal Auto reset High Pressure Control Switch Float Switch N A Storage Bin VOLTAGE RANGE 187 253 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 2b KM 1300MWH Water cooled AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Serial No M10156D 208 230 60 1 3 wire with neutral for 115 11 5 5 Min Freeze AT 104 F WT 80 F 20A 20A Ambient WATER TEMP oni 1291 586 1271 576 1193 541 Ibs day kg day 70 Reference without marks 80 90 1271 576 100 SHAPE OF ICE Crescent Cube ICE PRODUCTION PER CYCLE 28 6 Ibs 13 kg 1440 pcs APPROXIMATE STORAGE CAPACITY N A ELECTRIC amp WATER CONSUMPTION 90 70 F 70 50 F ELECTRIC W kWH 100 bei 2088 4 1 1990 3 7 POTABLE WATER 374 30 6 571 44 2 WATER COOLED CONDENSER 929 76 646 50 al 24HR gal 100 ibs EXTERIOR DIMENSIONS WxDxH 30 x 27 3 8 x 41 1 2 762 x 695 x 1055 mm EXTERIOR FINISH Stainless Steel Galvanized Steel Rear WEIGHT Net 290 Ibs 132 kg Shipping 332 Ibs 151 kg CONNECTIONS ELECTRIC Permanent Connecti
15. a neutral cleaner and rinse thoroughly Clean the bin liner by using a neutral cleaner Rinse thoroughly after cleaning 3 Condenser Except water cooled model Check the Condenser once a year and clean if required by using a brush or vacuum cleaner More frequent cleaning may be required depending on the location of the icemaker 62
16. for a Low Water Safety shut down to protect the Water Pump from mechanical seal failure For water cooled model if the water is shut off the unit is protected by the High Pressure Switch 5 High Voltage Cut out The maximum allowable supply voltage of this icemaker is limited by the High Voltage Cut out If miswiring especially on single phase 3 wire models causes excessive voltage on the Controller Board the High Voltage Cut out shuts down the circuit in 3 seconds and the icemaker automatically stops When the proper supply voltage is resumed the icemaker automatically starts running again The Control Board will signal this problem using 7 Beeps every 3 seconds 6 LED Lights and Audible Alarm Safeties The red LED indicates proper control voltage and will remain on unless a control voltage 15 problem occurs At startup a 5 second delay occurs while the board conducts an internal timer check A short beep occurs when the power switch is turned ON or OFF The green LED s 1 4 represent the corresponding relays and energize and sequence 5 seconds from initial startup as follows Sequence Step LED s on Length Min Max Avg 1 Minute Fill Cycle LED4 60 sec Harvest Cycle LED1 4 amp 2 2 min 20 min 3 5 min Freeze Cycle LED 5 min 60 min 30 35 min Reverse Pump Out LED1 3 amp 2 10 sec 20 sec Factory set LED 1 Comp LED 2 HGV CFM LEDS PM LED4 WVj The built in safeties shut down the unit and have alarms as f
17. it with refrigerant For air cooled and water cooled models see the Nameplate for the required refrigerant charge For remote air cooled models see the Charge Label in the machine compartment 48 11 Replace the removed parts in the reverse order of which they were removed 12 Replace the Top Insulation and the panels in their correct positions 13 Turn on the power supply 8 REMOVAL AND REPLACEMENT OF WATER REGULATING VALVE WATER COOLED MODEL ONLY IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened Do not replace the Drier until after all other repair or replacement has been made 1 Turn off the power supply 2 Close the Water Supply Line Shut off Valve 3 Remove the panels 4 Recover the refrigerant and store it in an approved container 5 Disconnect the Capillary Tube at the Condenser outlet using brazing equipment 6 Disconnect the Flare connections of the valve 7 Remove the screws and the valve from the Bracket 8 Install the new valve and braze the Capillary Tube 9 Install the new Drier 10 Check for leaks using nitrogen gas 140 PSIG and soap bubbles 11 Evacuate the system and charge it with refrigerant See the Nameplate for the required refrigerant charge 12 Connect the Flare connections 13 Open the Water Supply Line Shut off Valve 49 14 Check for water leaks 15 Replace the panels in their correct positions 16 Turn on the power s
18. leaks using nitrogen gas 140 PSIG and soap bubbles 9 Evacuate the system and charge it with refrigerant For air cooled and water cooled models see the Nameplate for the required refrigerant charge For remote air cooled models see the Charge Label in the machine compartment 47 10 Cut the leads of the Solenoid allowing enough lead length to reconnect using closed end connectors 11 Connect the new Solenoid leads 12 Attach the Solenoid to the valve body and secure it with a screw 13 Replace the panels in their correct positions 14 Turn on the power supply 7 REMOVAL AND REPLACEMENT OF EVAPORATOR IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened Do not replace the Drier until after all other repairs or replacement have been made 1 Turn off the power supply 2 Remove the panels and the Top Insulation over the Evaporator 3 Recover the refrigerant and store it in an approved container 4 Remove the Spray Tubes and the Insulations at the U shaped notch where the refrigeration tubings go through the molded chassis 5 Remove the Insulation Tube and disconnect the Evaporator Inlet Tubing at the Tee next to the Expansion Valve 6 Lift up the Evaporator and disconnect the Evaporator Outlet Tubing 7 Install the new Evaporator 8 Install the new Drier 9 Check for leaks using nitrogen gas 140 PSIG and soap bubbles 10 Evacuate the system and charge
19. position unless the icemaker will be at sub freezing tempera tures 1 On water cooled model only first remove the water from the water cooled condenser 1 Remove the Front Panel 2 Move the Control Switch on the Control Box to the OFF position 3 Wait 3 minutes 4 Move the Control Switch to the ICE position 5 Allow 5 minutes for the icemaker to fill with water and the Water Pump to start operating 6 Close the Water cooled Condenser Water Supply Line Shut off Valve 7 Open the Drain Valve for the water cooled condenser water supply line 8 Allow the line to drain by gravity 9 Attach compressed air or carbon dioxide supply to the Condenser Water Line Drain Valve 10 Quickly blow the water cooled condenser out using compressed air or carbon dioxide until water stops coming out 56 2 Remove the water from the potable water supply line 1 Remove the Front Panel Already removed on water cooled model 2 Move the Control Switch on the Control Box to the OFF position 3 Wait 3 minutes 4 Close the Potable Water Supply Line Shut off Valve and open the Potable Water Supply Line Drain Valve 5 Allow the line to drain by gravity 6 Attach compressed air or carbon dioxide supply to the Potable Water Line Drain Valve 7 Move the Control Switch to the ICE position 8 Blow the potable water line out using compressed air or carbon dioxide 3 Drain the Potable Water Tank 1 Turn off the
20. temperature water pressure Water Regulator or refrigerant charge b See chart 2 1 and check Float Switch Water Solenoid Valve or Controller Board 2 Harvest cycle a See chart 2 2 and check Controller Board Thermistor Evaporator ambient and or water temperature water supply line Water Solenoid Valve orLine Valve 40 4 ABNORMAL ICE PROBLEM POSSIBLE CAUSE REMEDY 1 Small Cube Cube Guide 1 Out of position 1 Place in position Circulated water falls into bin b See chart 1 5 and check water supply line Water Solenoid Valve water system Pump Motor or Controller Board c Drain Valve 1 Dirty 2 Cloudy or a See chart 2 1 and 3 and check Float Switch Water Solenoid Valve irregular cube Controller Board Spray Tubes water system refrigerant charge or Expansion Valve b Spray Guide 1 Dirty 1 Clean c Water Quality 1 High hardness or contains 1 Install a water filter or impurities softener 5 OTHERS PROBLEM POSSIBLE CAUSE REMED 1 Icemaker will a Bin Control 1 Set too cold 1 Adjust warmer not stop when Thermostat 2 Defective 2 Replace bin is filled with ice 2 Abnormal a Pump Motor 1 Bearings worn out 1 Replace noise b Fan Motor 1 Bearings worn out 1 Replace 2 Fan blade deformed 2 Replace fan blade 3 Fan blade does not move 3 Replace freely cylinder valve broken 2 Mounting pad out of 2 Reinstall
21. 3 Allow the Vacuum Pump to pull down to a 29 9 Hg vacuum Evacuating period depends on pump capacity 4 Close the Low side Valve and High side Valve on the Service Manifold 42 5 Disconnect the Vacuum Pump and attach a Refrigerant Service Cylinder to the High side line Remember to loosen the connection and purge the air from the Hose See the Nameplate for the required refrigerant charge Hoshizaki recom mends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard No 700 88 be used 6 A liquid charge is recommended for charging an R 404A system Invert the service cylinder Open the High side Service Manifold Valve 7 Allow the system to charge with liquid until the pressures balance 8 If necessary add any remaining charge to the system through the Low side Use a throttling valve or liquid dispensing device to add the remaining liquid charge through the Low side access port with the unit running 9 Close the two Refrigerant Access Valves and disconnect the Hoses and Service Manifold 10 Cap the Access Valves to prevent a possible leak 2 BRAZING DANGER Refrigerant R 404A itself is not flammable at atmospheric pressure and temperatures up to 176 F Refrigerant 404 itself is not explosive or poisonous However when exposed to high temperatures open flames R 404A can be decom posed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous Always recov
22. DUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W KWH 100 165 WATER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT DESIGN PRESSURE BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS WATER TEMP F TempCF 850 70 9 70 80 90 Crescent Cube 28 6 Ibs 13 kg 1440 pcs N A 90 70 F 70 50 F 2612 5 3 2314 4 2 379 32 0 724 54 8 30 x 27 3 8 x 41 1 2 762 x 695 x 1055 mm Stainless Steel Galvanized Steel Rear Net 275 Ibs 125 kg Shipping 332 Ibs 151 kg Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT 3 8 OD Pipe Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostat Hermetic Model CS 14K6E PFV 279 Air cooled Remote Condenser Unit URC 12F Vertical type Stainless Steel and Copper Thermostatic Expansion Valve Condensing Pressure Regulator on URC 12F R 404A 9 Ibs 150z 45009 icemaker 5 8 oz Cond Unit 4 Ib 7 High 467 PSIG Low 230 PSIG High Voltage Cut out Interna
23. EPLACEMENT OF FAN 53 13 REMOVAL AND REPLACEMENT OF WATER VALVE 54 14 REMOVAL AND REPLACEMENT OF PUMP MOTOR 55 15 REMOVAL AND REPLACEMENT OF SPRAY TUBES 56 VI MAINTENANCE AND CLEANING INSTRUCTIONS s 56 1 PREPARING THE ICEMAKER FOR LONG 56 D REN 58 a CLEANING PROCEDURE rettet 59 b SANITIZING PROCEDURE rrr Otter ERES HO eor oo Dried EAR 60 S OMAINITENANGE EE 62 L SPECIFICATIONS 1 KM 1300MAH Air cooled AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W KWH 100 165 WATER gal 24HR 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION 208 230 60 1 3 wire with neutral for 115V 13 2A 5
24. MATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W KWH 100 Ibs WATER gal 24HR gal 100 Ibs WATER COOLED CONDENSER al 24HR gal 100 165 EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 208 230 60 1 3 wire with neutral for 115V 11 5A 5 Min Freeze AT 104 F WT 80 F 20A 20A Ambient TempCF 50 J 70 90 70 80 Crescent Cube 28 6 105 13 kg 1440 pcs N A 90 70 F 70 50 F 2207 4 5 2138 4 0 407 34 6 652 50 8 1330 113 824 64 2 30 x 27 3 8 x 41 1 2 7620 x 695 x 1055 mm Stainless Steel Galvanized Steel Rear Net 290 Ibs 132 Shipping 332 Ibs 151 kg Permanent Connection Inlet 1 2 FPT Condenser Inlet 1 2 Outlet 3 4 FPT Condenser Outlet 3 8 FPT 3 8 OD Pipe Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe Pressure Regulator Thermostat Hermetic Model CS 14K6E PFV 279 Water cooled Tube in tube type Vertical type Stainless Steel and Copper Thermostatic Expansion
25. V THERMSTOR HOTGAS VALVE VALVE RI REMOTE CONDENSER UNIT Note Pressure Switch Cut out 412 21 3 PSIG Cut in 327 21 3 PSIG 30 3 TIMING CHART When Control Sw is turned OFF Pressure Sw is OFF or Thermistor Temp exceeds ti From Defrost Cycle To Defrost Cycle Too Lo Vend Beer Hi Temp Lo Wate Defrost Freeze Float Sw is OFF ee d 7771 Hi Temp Mid Temp Lo Temp Initial NO Stand by Water Supply Mode 2 Mode 3 Modei Mode Mode3 tt Date Thermistor 12 ihn e e ON ues 2 Float Switch OFF T 3 Compressor i Noe OFF jw U Icemakiag 5 8 Pump Motor OFF fin Drain Pressure ON Sw ON 6 mE OFF EEN DEE EE ee Ne EE ON Protect iCondenser Unit orm E 8 Fan Motor amp Line Valve Reset ON Water Valve ON Hot Gas Valve m 1 The icemaker does not complete a defrost cycle in the first 2 or 3 minutes See Il 2 d CONTROLS AND ADJUSTMENTS 31 To Stand by Cycle When Control Sw is turned OFF Pressure Sw is OFF or Thermistor Temp exceeds 51 1 To Freeze Cycle From Freeze Cycle 5 High Temp Mid Temp Low Temp Too Low Temp NO Defrost include drain Wash Thermistor
26. Water Solenoid Valve Defective Diaphragm does not close See 11 2 e CHECKING CONTROLLER BOARD Check for water leaks with icemaker off b Controller Board Defective 38 See II 2 e CHECKING CONTROLLER BOARD PROBLEM POSSIBLE CAUSE REMEDY 5 No water comes from Spray Tubes a Water Supply Line 1 Water pressure too low and water level in Water Tank too low Check and get recommended pressure Water Pump will not start or freeze cycle b Water Solenoid Valve Dirty mesh filter or orifice and water level in Water Tank too low Clean time is too short c Water System Water leaks Check connections for water leaks and replace Clogged Clean d Pump Motor Motor winding opened Replace Bearing worn out Replace Wiring to Pump Motor Check for loose connection or open and replace Defective Capacitor Replace Defective or bound impeller Replace and clean Mechanical Seal worn out Check and replace Controller Board 6 Fan Motor will not start or is not operating a Fan Motor Defective Motor winding opened See 11 2 e CHECKING CONTROLLER BOARD Replace Bearing worn out Replace Wiring to Fan Motor Check for loose connection or open and repl
27. ace Defective Capacitor Replace Fan blade bound Check and replace b Controller Board 7 All components a Refrigerant run but no ice is produced Defective Undercharged See 11 2 e CHECKING CONTROLLER BOARD Check for leaks and recharge Air or moisture trapped Replace Drier and recharge b Compressor Defective valve Replace c Hot Gas Solenoid Continues to open in freeze cycle Check and replace Continues to close in freeze cycle Check and replace Water cooled model only Condenser water pressure too low or off and Pressure Control opens and closes frequently 39 Check and get recommended pressure 2 EVAPORATOR IS FROZEN UP PROBLEM POSSIBLE CAUSE REMEDY 1 Freeze cycle time is too long 2 All ice formed on Evaporator does not fall into bin inc harvest cycle 3 Others a Float Switch Leads short circuit or defective switch Check and replace Float does not move freely 2 Clean or replace b Water Solenoid Valve Diaphragm does not close Check for water leaks with icemaker off c Controller Board a Evaporator Defective Scaled up See Il 2 e CHECKING CONTROLLER BOARD Clean b Water Supply Line Water pressure too low Check and get recommended press
28. ater Tank 60 4 Replace the Insulation Panel and the Front Panel in their correct positions Note Make sure that the Control Switch is in the WASH position and the Cleaning Valve is open 5 Turn on the power supply and start the sanitizing process 6 Turn off the power supply after 15 minutes 7 Remove the Front Panel and if necessary the Insulation Panel 8 Drain the Water Tank See the above step 5 in CLEANING PROCEDURE 9 Replace the removed parts and the Insulation Panel in their correct positions 10 Repeat the above steps 15 through 28 in a CLEANING PROCEDURE two times to rinse thoroughly 11 Close the Cleaning Valve 12 Move the Control Switch to the ICE position 13 Replace the Front Panel in its correct position 14 Clean the Storage Bin with water 15 Turn on the power supply and start the automatic icemaking process 61 3 MAINTENANCE IMPORTANT This icemaker must be maintained individually referring to the instruction manual and labels provided with the icemaker 1 Stainless Steel Exterior To prevent corrosion wipe the exterior occasionally with a clean and soft cloth Use a damp cloth containing a neutral cleaner to wipe off oil or dirt build up 2 Storage Bin and Scoop e Wash your hands before removing ice Use the plastic scoop provided The Storage Bin is for ice use only Do not store anything else in the bin Keep the scoop clean Clean it by using
29. cle when Float Defrost cycle is completed and freeze cycle Switch circuit opens starts IMPORTANT IMPORTAN Board never accepts freeze completion signal Board never accepts defrost completion signal within the first 5 minutes in freeze cycle within the first 2 minutes in defrost cycle Defrost cycle time is limited to 20 minutes even if Defrost Timer does not stop counting 19 2nd Cycle and after with no pump drain IMPORTANT Freeze cycle time is limited to 60 minutes even if Float Switch does not open 1 Float Switch opens and signals to complete 2 Thermistor reads 48 F freeze cycle Defrost Timer starts counting WATER VALVE E M 4 Afterthe first 5 minutes in freeze cycle 3 Defrost Timer stops counting Ready to complete freeze cycle when Float Defrost cycle is completed and freeze cycle Switch circuit opens starts PUMP FAN amp LINE VALVE Water Valve opening is limited to 6 minutes IMPORTANT IMPORTANT Board never accepts freeze completion signal 1 Board never accepts defrost completion signal within the first 5 minutes in freeze cycle within the first 2 minutes in defrost cycle 2 Defrost cycle time is limited to 20 minutes even if Defrost Timer does not stop counting 20 d CONTROLS AND ADJUSTMENTS The Dip Switch is factory adjusted to the following positions DIP SWITCH NO KM 1300MAH KM 1300MWH KM 1300MRH
30. equired If necessary check for resistance between Thermistor leads and visually check the Thermistor mount ing located on the Suction Line next to the Evaporator outlet Temperature F Resistance kQ 0 14 401 10 10 613 32 6 000 50 3 871 70 2 474 90 1 633 Check a thermistor for resistance by using the following procedures i Disconnect the connector K3 on the board ii Remove the Thermistor See V 11 REMOVAL AND REPLACEMENT OF THERMIS TOR iii Immerse the Thermistor sensor portion in a glass containing ice and water for 2 or 3 minutes iv Check for a resistance between Thermistor leads Normal reading is within 3 5 to 7 kQ Replace the Thermistor if it exceeds the normal reading 2 Defrost Timer No adjustment is required under normal use as the Defrost Timer is adjusted to the suit able position However if necessary when all the ice formed on the Evaporator does not fall into the bin in the harvest cycle adjust the Defrost Timer to longer setting by adjusting the Dip Switch No 1 amp 2 on the Controller Board SETTING TIME Dip Switch Dip Switch No 1 No 2 OFF OFF 60 seconds ON OFF 90 seconds OFF ON 120 seconds ON ON 180 seconds 22 3 Drain Timer The Drain Timer is factory adjusted and no adjustment is required SETTING TIME Dip Switch Dip Switch No 3 No 4 T1 T2 OFF OFF 10 seconds 150 seconds ON OFF 10 seconds 180 seconds OFF ON 10 seconds 120 seconds ON ON 20 seconds 180 second
31. er temp too warm Refrigerant overcharged Condenser water pressure Move to ICE position 2 Check and replace Clean b High Pressure Controller Reduce ambient temp Recharge Check and get 4 Water continues to be supplied in freeze cycle too low or off Water cooled model only recommended pressure Fan not operating Except water cooled model See chart 1 6 Refrigerant line or components plugged Clean and replace Drier c Water Regulator Set too high Adjust lower d Overload Protector Bad contacts Check for continuity and replace Voltage too low Increase voltage Refrigerant overcharged or undercharged Recharge Line Valve continues to close in freeze cycle and Overload Protector operates Check Line Valve s operation in freeze cycle and replace Starter Bad contacts Check and replace 2 Coil winding opened 2 Replace f Start Capacitor or Run Capacitor Defective Replace g Magnetic Contactor Bad contacts Check for continuity and replace 2 Coil winding opened 2 Replace h Compressor Wiring to Compressor Check for loose connection or open and replace Defective Replace Protector tripped Reduce temperature i Controller board a
32. er the refrigerant and store it in an approved container Do not discharge the refrigerant into the atmosphere Do not use silver alloy or copper alloy containing Arsenic Do not use R 404A as a mixture with pressurized air for leak testing Refrigerant leaks can be detected by charging the unit with a little refrig erant raising the pressure with nitrogen and using an electronic leak detector Note All brazing connections in the Evaporator Case are clear paint coated Sandpaper the brazing connections before unbrazing the components Use a good abrasive cloth to remove paint 43 3 REMOVAL AND REPLACEMENT OF COMPRESSOR IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened Do not replace the Drier until after all other repair or replacement has been made Note When replacing a Compressor with a defective winding be sure to install the new Start Capacitor and Start Relay supplied with the replacement Compressor Due to the ability of the POE oil in the compressor to absorb moisture quickly the Compressor must not be opened more than 15 minutes for replacement or service Do not mix lubricants of different compressors even if both are charged with R 404A except when they use the same lubricant 1 Turn off the power supply 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Remove the Terminal Cover on the Compressor and disconnect the Compre
33. gn without prior notice 36 IV SERVICE DIAGNOSIS 1 NO ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY 1 The icemaker a Power Supply 1 OFF position Move to ON position 2 Loose connections Tighten 3 Bad contacts Check for continuity and replace 4 Voltage too high Check and get recommended voltage b Fuse Inside Fused Disconnect if any Blown out Check for short circuit and replace Control Switch OFF position Move to ICE position Bad contacts 2 Check for continuity and replace d Bin Control Thermostat Tripped with bin filled with ice Remove ice Ambient temperature too cool Increase ambient temperature Set too warm Il 2 d CONTROLS AND ADJUSTMENTS 5 Bin Control Bulb out of position Place in position Bad contacts or leak in bulb Check for continuity and replace e High Pressure Control Bad contacts Check for continuity and replace f Transformer Thermal fuse blown out or coil winding opened Replace 9 Wiring to Controller Board Loose connections or open Check for continuity and replace h Thermistor Leads short circuit or open and High Temperature Safety operates See II 2 d CONTROLS AND ADJUSTMENTS 1 Defrost Control
34. hould be at a right angle to the valve body Closed Position Open Position 58 a CLEANING PROCEDURE 1 Dilute 27 fl 02 of the recommended cleaner Hoshizaki Scale Away or LIME A WAY Economics Laboratory Inc with 5 gal of water 2 Remove all ice from the Evaporator and the Storage Bin Note To remove cubes on the Evaporator turn off the power supply and turn it on after minutes The defrost cycle starts and the cubes will be removed from the Evaporator 3 Turn off the power supply 4 Remove the Front Panel and then remove the Insulation Panel by lifting the panel slightly and pulling it toward you 5 Drain the Water Tank by removing the Rubber Cap covering the Overflow Pipe in the Water Tank Remove the Overflow Pipe by turning it counterclockwise See Fig 4 6 After tank has drained replace the removed parts in their correct positions 7 Pour the cleaning solution into the Water Tank 8 Fully open the Cleaning Valve on the left side wall of the machine compartment 9 Move the Control Switch on the Control Box to the WASH position 10 Replace the Insulation Panel and the Front Panel in their correct positions Note When placing the Insulation Panel do not catch the hose between the panel and the body 11 Turn on the power supply and start the washing process 12 Turn off the power supply after 30 minutes 13 Remove the Front Panel and the Insulation Panel 14 Drain the Water Tank
35. ies depending on the ambient and water temperatures 3 High Temperature Safety 127 7 F The temperature of the suction line in the refrigerant circuit is limited by the High Tem perature Safety During the defrost cycle the Evaporator temperature rises The Thermistor senses 48 F and starts the Defrost Timer After the Defrost Timer counts down to zero the normal freeze cycle begins If the Evaporator temperature continues to rise the Thermistor will sense the rise in temperature and at 127 7 F the Thermistor operates the High Tem perature Safety This High Temperature Safety shuts down the circuit and the icemaker automatically stops This High Temperature Safety protects the unit from excessive temperature The Control Board will Beep every 3 seconds The white Reset Button on the Control Board must be pressed with power on to reset the Safety 4 Low Water Safety If the Pump Motor is operated without water the mechanical seal can fail To prevent this type of failure the Controller Board checks the position of the Float Switch at the end of the initial one minute water fill cycle and at the end of each defrost cycle If the Float Switch is in the up position electrical circuit closed the Controller Board changes to the ice making cycle If the Float Switch is in the down position electrical circuit open the Controller Board changes to a one minute water fill cycle before starting the ice making cycle This method allows
36. in an approved container 4 Remove the Drier 5 Install the new Drier with the arrow on the Drier in the direction of the refrigerant flow Use nitrogen gas at the pressure of 3 4 PSIG when brazing the tubings 6 Check for leaks using nitrogen gas 140 PSIG and soap bubbles 7 Evacuate the system and charge it with refrigerant For air cooled and water cooled models see the Nameplate for the required refrigerant charge For remote air cooled models see the Charge Label in the machine compartment 8 Replace the panels in their correct positions 9 Turn on the power supply 45 5 REMOVAL AND REPLACEMENT OF EXPANSION VALVE IMPORTANT Sometimes moisture in the refrigerant circuit exceeds the Drier capacity and freezes up at the Expansion Valve Always install a new Drier every time the sealed refrigeration system is opened Do not replace the Drier until after all other repair or replacement has been made 1 Turn off the power 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Remove the insulation and the Expansion Valve Bulb on the suction line 5 Remove the Expansion Valve Cover and disconnect the Expansion Valve using brazing equipment 6 Braze the new Expansion Valve with nitrogen gas flowing at the pressure of 3 4 PSIG WARNING Always protect the valve body by using a damp cloth to prevent the valve from overheating Do not braze with the valve bod
37. l Auto reset Overload Protector Internal Auto reset High Pressure Control Switch Float Switch N A Ice Storage Bin Remote Condenser Unit VOLTAGE RANGE 187 253V AMBIENT TEMP 45 100 WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 4 CONDENSING UNIT URC 12F 10x20mm 4x3 SLOTTED HOLES 17 1 8 435mm 15 11 16 398mm 14 15 16 380mm 14 9 16 370mm 36 13 16 935mm 33 15 32 850mm 27 9 16 14 146 357mm ee ee D I ce cia aka i eS e LZ 35 11 16 907 2mm Ci lt Si ef eS SSI SE Et oor oor or FF 21 15 16 557 8mm ELECT SUPPLY 7 8 DIAM OPENING 15 3 4 2 15 16 380mm 380mm MODEL URC 12F SPECIFICATIONS EXTERIOR DIMENSIONS W x D x H REFRIGERANT CHARGE URC 12F WEIGHT CONNECTIONS REFRIGERANT ELECTRICAL CONDENSER HEAD PRESSURE CONTROL AMBIENT CONDITION 10 Galvanized steel 35 11 16 x 15 11 16 x 21 15 16 907 2 x 398 x 557 8 mm R404A 5 Ibs oz 2350 9 Net 80 Ibs 36 kg Shipping 87 Ibs 39 kg One Shot Couplings Aeroquip Permanent Connection Air cooled Condensing Pressure Regulator Min 20 F Max 122 F 29 C to 50 C Outdoor use
38. lve Check Valve Pressure i i ine d Switch High H Float Switch Access Valve Discharge Line Compressor Refrigerant Circuit m Water Circuit Expansion Valve 27 c KM 1300MRH Remote air cooled Condensing Pressure Regulator Condenser Unit Condenser Receiver Tank Connecting Pipe Access Valve 17 Spray Tube Fusible Plug Water Valve Strainer x E Le Suppl A Hot Gas Valve Supply rer 1 4 xe Cleaning Valve Check Valve Suction Line Valve Float Switch J Pressure Switch High Discharge Line Compressor Access Valve Refrigerant Circuit Expansion Valve 28 2 WIRING DIAGRAMS a KM 1300MAH Air cooled and KM 1300MWH Water cooled 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115V oe START CAP 15 1440 R MAGNETIC CONTACTOR EE Se Lee EXE Hoo B Note Pressure Switch Cut out Cut in AIR 412 21 3 PSIG 327 21 3 PSIG 0 WIRING DIAGRAM BIN CONTROL STARTER 29 RN 00 Cut out Cut in D D b we I 22 ONLY AIR COOLED MODEL WATER 384 21 3 PSIG 284 21 3 PSIG g 4 b KM 1300MRH Remote air cooled 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115
39. nstall the new C P R Use nitrogen gas at the pressure of 3 4 PSIG when brazing the C P R CAUTION Always protect the C P R body by using a damp cloth to prevent the C P R from overheating Do not braze with the C P R body exceeding 250 F 7 Install the new Drier in the icemaker 8 Check for leaks using nitrogen gas 140 PSIG and soap bubbles 9 Evacuate the system and charge it with refrigerant See the Charge Label in the machine compartment in the icemaker 10 Replace the panels in their correct positions 11 Turn on the power supply 51 11 REMOVAL AND REPLACEMENT OF THERMISTOR IMPORTANT 1 Fragile handle very carefully 2 Always use a recommended sealant High Thermal Conductive Type Model KE4560RTV manufactured by SHINETSU SILICONE Part Code 60Y000 11 or Part Code 4A0683 01 equivalent 3 Always use a recommended foam insulation Non absorbent Type or equivalent 4 Do not shorten or cut the Thermistor leads when installing it Ulur orhe power supply Thermistor Lead Cable Tie 2 Remove the panels 3 Remove the Control Box Cover 4 Disconnect the Thermistor leads from the K3 Connector on the Controller Board 5 Remove the Plastic Cable Ties Foam Insulation Thermistor Holder and Foam Insulation Thermistor See Fig 2 Fig 2 Thermistor Holder 6 Scrape away the old sealant on the Thermistor Holder and the Suction Pipe 7 Wipe off moisture or condensation on the Suc
40. ollows 1 beep every 3 sec High Evaporator Temperature gt 127 F Check for defrost problem stuck HGV or relay hot water entering unit stuck headmas ter or shorted thermistor 2 beeps every 3 sec Defrost Back Up Timer Defrost gt 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 gt 60 minutes Yellow LED marked 60 MIN energizes Check for F S stuck closed up WV leaking by HGV leaking by TXV not feeding prop erly low charge or inefficient compressor 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 gt 147Vac 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 amp 4 normal sequence every 5 seconds S3 should remain in the OFF position for normal operation The application switch located between relay X3 amp X4 must be set to match the original board application Place this switch in the ALP position if there is no white wire supplied 16
41. on WATER SUPPLY Inlet 1 2 FPT Cond Inlet 1 2 DRAIN Outlet 3 4 FPT Cond Outlet 3 8 3 8 OD Pipe CUBE CONTROL SYSTEM Float Switch HARVESTING CONTROL SYSTEM Hot Gas and Water Thermistor and Timer ICE MAKING WATER CONTROL Timer Controlled Overflow Pipe COOLING WATER CONTROL Pressure Regulator BIN CONTROL SYSTEM Thermostat COMPRESSOR Hermetic Model CS14K6E PFV 279 CONDENSER Water cooled Tube in tube type EVAPORATOR Vertical type Stainless Steel and Copper REFRIGERANT CONTROL Thermostatic Expansion Valve REFRIGERANT CHARGE R 404A 21b 90z 11509 DESIGN PRESSURE High 427 PSIG Low 230 PSIG P C BOARD CIRCUIT PROTECTION High Voltage Cut out Internal COMPRESSOR PROTECTION Auto reset Overload Protector Internal REFRIGERANT CIRCUIT PROTECTION Auto reset High Pressure Control Switch LOW WATER PROTECTION Float Switch ACCESSORIES SUPPLIED N A REQUIRED Ice Storage Bin OPERATING CONDITIONS VOLTAGE RANGE 187 253 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 3 KM 1300MRH Remote air cooled AC SUPPLY VOLTAGE 208 230 60 1 3 wire with neutral for 115 AMPERAGE 13 5A 5 Min Freeze AT 104 F WT 80 F MINIMUM CIRCUIT AMPACITY 20A MAXIMUM FUSE SIZE 20A APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRO
42. place the panels in their correct positions 8 Replace the Junction Box Cover in its correct position Remote Air cooled model 9 Turn on the power supply 53 13 REMOVAL AND REPLACEMENT OF WATER VALVE 1 Turn off the power supply 2 Close the Water Supply Line Shut off Valve 3 Remove the Front Panel 4 Remove the Valve Outlet Tubing by releasing the Clamp 5 Remove the Bracket from the unit 6 Remove the Fitting Nut and Water Valve 7 Disconnect the Terminals from the Water Valve 8 Install the new Water Valve and replace the removed parts in the reverse order of which they were removed 9 Open the Water Supply Line Shut off Valve 10 Turn on the power supply 11 Check for leaks 12 Replace the Front Panel in its correct position 14 REMOVAL AND REPLACEMENT OF PUMP MOTOR 1 Turn off the power supply 2 Remove the Front Panel 3 Drain the Water Tank by removing the Insulation Panel and the Rubber Cap covering the Overflow Pipe in the Water Tank Remove the Overflow Pipe by turning it counterclockwise 4 Replace the removed parts in their correct positions 5 Disconnect the Pump Suction and Discharge Hoses 6 Remove the screws and the Pump Motor Bracket 54 7 Remove the closed end connectors from the Pump Motor leads 8 Remove the two screws and the Pump Motor Bracket 9 Remove the Pump Housing and check the Impeller 10 If the Impeller is defective install a new Impeller 11 Ins
43. position surfaces 3 Ice in storage a Bin Drain 1 Plugged bin often melts 41 V REMOVAL AND REPLACEMENT OF COMPONENTS IMPORTANT Ensure all components fasteners and thumbscrews are securely in place after the equipment is serviced IMPORTANT 1 The Polyol Ester POE oils used in R 404A units can absorb moisture quickly Therefore it is important to prevent moisture from entering the system when replacing or servicing parts 2 Always install a new filter drier every time the sealed refrigeration system is opened 3 Do not leave the system open for longer than 5 minutes when replacing or servicing parts 1 SERVICE FOR REFRIGERANT LINES a REFRIGERANT RECOVERY The icemaker unit is provided with two Refrigerant Access Valves on the low side and high side lines Recover the refrigerant from the Access Valves and store it in an approved container Do not discharge the refrigerant into the atmosphere b EVACUATION AND RECHARGE R 404A 1 Attach Charging Hoses a Service Manifold and a Vacuum Pump to the system Be sure to connect Charging Hoses to both high side and low side lines valves IMPORTANT The vacuum level and Vacuum Pump may be the same as those for current refrigerants However the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for POE oils 2 Turn on the Vacuum Pump Never allow the oil in the Vacuum Pump to flow back ward
44. power supply 2 Move the Control Switch to the OFF position 3 Drain the Water Tank by removing the Insulation Panel and the Rubber Cap covering the Overflow Pipe in the Water Tank Remove the Overflow Pipe by turning it counterclockwise See Fig 4 4 Replace the removed parts in their correct positions 5 Remove all ice from the Storage Bin and clean the Storage Bin 6 Replace the Front Panel in its correct position 7 Close the Drain Valve 57 2 CLEANING IMPORTANT Ensure all components fasteners and thumbscrews are securely in place after any maintenance or cleaning is done to the equipment WARNING HOSHIZAKI recommends cleaning this unit at least once a year More frequent cleaning however may be required in some existing water conditions To prevent injury to individuals and damage to the icemaker do not use ammonia type cleaners Always wear liquid proof gloves for safe handling of the cleaning and sanitizing solution This will prevent irritation in case the solution comes into contact with skin IMPORTANT The Cleaning Valve is used to allow solution flow to the inside of the Evaporator during the cleaning and sanitizing operation It should be closed for all icemaking operation The Compressor will not operate unless this valve is completely closed To open the Cleaning Valve the Valve Handle should be parallel to the valve body To close the valve the Valve Handle s
45. quality control system 3 All models are pretested and factory adjusted b CONTROLLER BOARD CAUTION Fragile handle very carefully Acontroller board contains integrated circuits which are susceptible to failure due to static discharge It is especially important to touch the metal part of the unit when handling or replacing the board Do not touch the electronic devices on the board or the back of the board to prevent damage to the board Do not change wiring and connections Do not misconnect K4 and 5 because the same connector is used for the Thermistor and Float Switch K4 is not connected Always replace the whole board assembly when it goes bad Do not short out power supply to test for voltage PART NUMBER TYPE 2A1410 01 HOS 001A Control Products Features of Control Products E Controller Board 1 Maximum Water Supply Period 6 minutes Water Solenoid Valve opening in the Defrost Harvest Cycle is limited by the defrost timer The Water Valve cannot remain open longer than the maximum period The Water Valve can close in less than six minutes if the defrost cycle is completed 14 2 Defrost Timer The defrost cycle starts when the Float Switch opens and completes the freeze cycle But the Defrost Timer does not start counting until the Thermistor senses 48 F at the Evapora tor outlet The period from the end of the freeze cycle up to the point of the Thermistor s sensing var
46. rage Bin is filled with ice Setting in the prohibited range might cause severe damage to the icemaker resulting in failure No adjustment is required under normal use as the Bin Control is factory adjusted Adjust it if necessary so that the icemaker stops automatically within 10 seconds after ice contacts the Bin Control Thermostat Bulb e CHECKING THE CONTROLLER BOARD 1 Visually check the sequence with the icemaker operating 2 Visually check the Controller Board by using the following procedures i Adjust the Defrost Timer to minimum position Disconnect the Thermistor from the Controller Board Connect a 1 5 kQ 3 5 kQ resistor to the Connector K3 pins 1 and 2 and energize the unit 24 After the 1 minute 5 second water supply cycle and the 2 minute 10 second defrost cycle the unit should start the freeze cycle ii After the above step i disconnect the Float Switch leads from the Controller Board within the first 5 minutes of the freeze cycle The unit should go into the defrost cycle after the first 5 minutes 20 seconds of the freeze cycle iii Reconnect the Float Switch Connector to the Controller Board After the first 5 minutes of the freeze cycle disconnect the Float Switch leads from the Controller Board At this point the unit should start the defrost cycle iv After Step iii de energize the unit and confirm that the Defrost Timer is in the minimum position Disconnect the resistor f
47. rom the Controller Board and ener gize the unit After the 1 minute water supply cycle the defrost cycle starts Re connect a 1 5 kQ 3 5 kQ resistor to the Connector K3 pins 1 and 2 after the first 2 minutes of the defrost cycle The unit should start the freeze cycle after 1 minute 5 seconds from the resistor connection 3 Check the Controller Board by using test program of the Controller Board 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 and 4 normal sequence every 5 seconds S3 should remain in the OFF position for normal operation 25 Ill TECHNICAL INFORMATION 1 WATER CIRCUIT AND REFRIGERANT CIRCUIT a KM 1300MAH Air cooled Condenser Soray Tube Line Valve Water Valve Evaporator R Water Supply fil Strainer Hot Gas Valve Cleaning Valve Check Pressure ig Switch High Access Discharge Line Valve Float Switch Compressor Access Vaive Refrigerant Circuit Water Circuit Expansion Valve 26 b KM 1300MWH Water cooled Water Regulating Valve Condenser Drain Water Supply Spray Tube Line Valve Water Valve Strainer Water Suppl Supply _ Supply fafo ar ne Hot Gas Valve Cleaning Va
48. s T1 Time to drain the Water Tank T2 Time to restrain defrost completion 4 Drain Counter CAUTION Do not adjust the Drain Counter or the Evaporator may freeze up The Drain Counter is factory adjusted to drain the Water Tank every 10 cycles and no adjustment is required However where water quality is bad and the icemaker needs a pump drain more often the Drain Counter can be adjusted as shown in the table below SETTING FREQUENCY Dip Switch Dip Switch No 5 No 6 OFF OFF every cycle ON OFF every 2 cycles OFF ON every 5 cycles ON ON every 10 cycles 23 5 Freeze Timer CAUTION Adjust to proper specification or the unit may not operate correctly Two new dip switches numbered 9 and 10 have been added to the improved board to better prevent possible freeze ups These settings come factory set to the default setting of 60 min OFF OFF Check the adjustment chart published in the Tech Specs for proper settings If the old board does not have these two dip switches only 8 in stead of 10 leave setting as OFF OFF SETTING TIME Dip Switch Dip Switch No 9 No 10 OFF OFF 60 min ON OFF 70 min OFF ON 50 min ON ON 60 min 6 Bin Control CAUTION When the ambient temperature is below 45 F the Bin Control Thermostat operates to stop the icemaker even if the Ice Storage Bin is empty When the Thermostat is set in the prohibited range the icemaker operates continuously even if the Ice Sto
49. ssor Wiring 5 Remove the Discharge and Suction Pipes using brazing equipment 6 Remove the Hold down Bolts Washers and Rubber Grommets 7 Slide and remove the Compressor Unpack the new Compressor package Install the new Compressor 8 Attach the Rubber Grommets of the prior Compressor 9 Sandpaper the Suction Discharge and Process Pipes 10 Place the Compressor in position and secure it using the Bolts and Washers 11 Remove plugs from the Suction Discharge and Process Pipes 12 Braze the Process Suction and Discharge lines Do not change this order while purging with nitrogen gas flowing at the pressure 3 4 PSIG 13 Install the new Drier 44 14 Check for leaks using nitrogen gas 140 PSIG and soap bubbles 15 Evacuate the system and charge it with refrigerant For air cooled and water cooled models see the Nameplate for the required refrigerant charge For remote air cooled models see the Charge Label in the machine compartment 16 Connect the Terminals and replace the Terminal Cover in its correct position 17 Replace the panels in their correct positions 18 Turn on the power supply 4 REMOVAL AND REPLACEMENT OF DRIER IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened Do not replace the Drier until after all other repair or replacement has been made 1 Turn off the power supply 2 Remove the panels 3 Recover the refrigerant and store it
50. tall the new motor or new parts and replace the removed parts in the reverse order of which they were removed 12 Turn on the power supply and check for leaks 13 Replace the Front Panel in its correct position 15 REMOVAL AND REPLACEMENT OF SPRAY TUBES 1 Turn off the power supply 2 Remove the Front Panel and the Insulation Panel 3 Remove the Rubber Hoses from the Spray Tubes Water Supply Pipe 4 Release the Clamps and disconnect the Rubber Hoses 5 Remove the Spray Tubes by squeezing the side tabs 6 Install the new Spray Tubes and replace the removed parts in the reverse order of which they were removed 7 Replace the panels in their correct positions 8 Turn on the power supply 55 VI MAINTENANCE AND CLEANING INSTRUCTIONS IMPORTANT Ensure all components fasteners and thumbscrews are securely in place after any maintenance or cleaning is done to the equipment 1 PREPARING THE ICEMAKER FOR LONG STORAGE IMPORTANT When shutting off the icemaker for an extended time drain out all water from the water tank and remove the ice from the Storage Bin The Storage Bin should be cleaned and dried Drain the icemaker to prevent damage to the water supply line at sub freezing temperatures using air or carbon dioxide Shut off the icemaker until the proper ambient temperature is resumed When the icemaker is not used for two or three days it is sufficient to move the Con trol Switch to the OFF
51. tion Pipe 8 Smoothly apply recommended sealant KE4560RTV Part Code 60Y000 11 or 4A0683 01 to the Thermistor Holder concave 9 Attach the new Thermistor to the Suction Pipe very carefully to prevent damage to the leads And secure it using the Thermistor Holder and recommended foam insulation Note For models with the Liquid Bypass the Thermistor should be located upstream from the Liquid Bypass outlet and its end should be 4 3 4 or more away from the outlet See Fig 3 52 Min 4 3 4 E BM ERE Hit Liquid Bypass N Fig 3 10 Secure the insulation using the Plastic Cable Ties 11 Connect the Thermistor leads through the bushing of the Control Box to the K3 Connector on the Controller Board Note Do not cut the leads of the Thermistor while installing it 12 Replace the Control Box Cover and the panels in their correct positions 13 Turn on the power supply 12 REMOVAL AND REPLACEMENT OF FAN MOTOR Note When replacing a Fan Motor with defective winding it is recommended that a new capacitor be installed 1 Turn off the power supply 2 Remove the panels 3 Remove the Junction Box Cover from the remote condenser unit Remote Air cooled model 4 Remove the closed end connectors from the Fan Motor leads 5 Remove the Fan Motor Bracket and Fan Motor 6 Install the new Fan Motor and replace the removed parts in the reverse order of which they were removed 7 Re
52. upply 9 ADJUSTMENT OF WATER REGULATING VALVE WATER COOLED MODEL ONLY The Water Regulating Valve also called WATER REGULATOR is factory adjusted No adjustment is required under normal use Adjust the Water Regulator if necessary using the following procedures 1 Attach a pressure gauge to the high side line of the system Or prepare a thermometer to check for the condenser drain temperature 2 Rotate the adjustment screw by using a flat blade screwdriver so that the pressure gauge shows 270 PSIG or the thermometer reads 104 115 F 5 minutes after a freeze cycle or icemaking process starts When the pressure exceeds 270 PSIG or the condenser drain temperature exceeds 115 F rotate the adjustment screw counterclockwise See Fig 1 3 Check that the pressure or the condenser drain temperature holds a stable setting CW Higher CCW Lower 50 10 REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE REGULATOR C P R REMOTE AIR COOLED MODEL ONLY IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened Do not replace the Drier until after all other repair or replacement has been made 1 Turn off the power supply 2 Remove the panels from the remote condenser unit 3 Recover the refrigerant and store it in an approved container 4 Before heating break off the stub on the dome to release the dome charge 5 Disconnect the C P R using brazing equipment 6 I
53. ure Water Solenoid Valve Dirty mesh filter or orifice Clean Diaphragm does not close 2 Check for water leaks with icemaker off d Ambient and or water temperature cool Increase temperature e Line Valve Continues to open in harvest cycle Check operation in harvest cycle and replace f Thermistor Out of position or loose attachment See V 11 REMOVAL AND REPLACEMENT OF THERMISTOR g Controller Board a Spray Tubes Defrost Timer is set too short Adjust longer referring to Il 2 d CONTROLS AND ADJUSTMENT 2 Defrost Timer Defective Clogged See Il 2 e CHECKING CONTROLLER BOARD Clean Out of position Place in position b Water System Dirty Clean c Refrigerant Undercharged Check for leaks and recharge d Expansion Valve Bulb out of position or loose attachment Place in position Defective Replace e Hot Gas Solenoid Valve 3 LOW ICE PRODUCTION PROBLEM Coil winding opened Replace Plunger does not move Replace Wiring to Hot Gas Valve POSSIBLE CAUSE Check for loose connection or open and replace REMEDY 1 Freeze cycle time is long time is long a See chart 1 3 and check dirty Air Filter or Condenser ambient or water
54. y exceeding 250 F 7 Install the new Drier 8 Check for leaks using nitrogen gas 140 PSIG and soap bubbles 9 Evacuate the system and charge it with refrigerant For air cooled and water cooled models see the Nameplate for the required refrigerant charge For remote air cooled models see the Charge Label in the machine compartment 10 Attach the Bulb to the suction line in position Be sure to secure it with clamps and to insulate it 11 Place the new set of Expansion Valve Covers in position 46 12 Replace the panels in their correct positions 13 Turn on the power supply 6 REMOVAL AND REPLACEMENT OF HOT GAS VALVE AND LINE VALVE IMPORTANT Always use a copper tube of the same diameter and length when replacing the hot gas lines otherwise the performance may be reduced IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened Do not replace the Drier until after all other repair or replacement has been made 1 Turn off the power supply 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Remove the screw and the Solenoid 5 Disconnect the Hot Gas Valve or Line Valve using brazing equipment 6 Install the new valve CAUTION Always protect the valve body by using a damp cloth to prevent the valve from overheating Do not braze with the valve body exceeding 250 F 7 Install the new Drier 8 Check for
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