Inst. Manual Draft - HOSHIZAKI

1 HOSHIZAKI A Superior Degree of Reliability Models F-450 MAH(-C) Modular Flaker HOSHIZAKI America, Inc. SERVICE Manual Issued: 8-25-2009 2 IMPORTANTOnly qualified service technicians should install, service, and maintain theicemaker. No service or maintenance should be undertaken until the technicianhas thoroughly read this Service Manual . Failure to service and maintain theequipment in accordance with this Manual may adversely affect safety,performance, component life, and warranty provides this Manual primarily to assist qualified service technicians in theservice and maintenance of the the reader have any questions or concerns which have not been satisfactorilyaddressed, please call, write, or send an e-mail message to the HOSHIZAKI TechnicalSupport Department for AMERICA, Highway 74 SouthPeachtree City, GA 30269 Attn: HOSHIZAKI Technical Support DepartmentPhone: 1-800-233-1940 Technical Support (770) 487-2331 Fax: 1-800-843-1056 (770) 487-3360E-mail: Site: : To expedite assistance, all correspondence/communication MUST include thefollowing information: Model Number Serial Number Complete and detailed explanation of the 41.

2 F-450 MAH ..42. F-450 MAH-C .. 5II. General Information .. 61. Control Box Layout .. 73. Timer Board ..8[a] Solid-State 8[b] Timer 8[c] 9 III. Technical Information ..121. Water Circuit and Refrigeration Circuit .. 122. Wiring Diagram .. 13[a] 13[b] 143. Sequence of Electrical Circuit .. 154. Timing Chart .. 255. Performance Data .. 28[a] 28[b] 29IV. Service Diagnosis ..301. No Ice 302. Low Ice 333. 34V. Removal and Replacement of 351. Service for Refrigerant Lines .. 35[a] Refrigerant 35[b] Evacuation and Recharge [R-404A] .. 352. 363. Removal and Replacement of Compressor .. 374. Removal and Replacement of Drier .. 385. Removal and Replacement of Expansion Valve .. 396. Removal and Replacement of Evaporator 407. Removal and Replacement of Fan Motor .. 428. Removal and Replacement of Control Water Valve .. 429. Removal and Replacement of Flush Water Valve.

3 43VI. Cleaning and 441. Preparing the Icemaker for Long Storage .. 442. Cleaning and Sanitizing 45[a] Cleaning Solution .. 45[b] Cleaning 46[c] Sanitizing 47[d] Sanitizing Procedure - Initial .. 47[e] Sanitizing Procedure - Final .. 483. Maintenance 50 Please review this Manual . It should be read carefully before the icemaker is serviced ormaintenance operations are performed. Only qualified service technicians should service andmaintain the icemaker. This Manual should be made available to the technician prior to serviceor SUPPLY VOLTAGE115/60/1 COMPRESSOR120 RLA51 LRAGEAR MOTOR120 FLA1/6 HPFAN MOTOR115 FUSE SIZE20 AMAX. HACR BREAKER (USA ONLY)20 AMAX. CIRC. BREAKER (CANADA ONLY)20 AMINIMUM CIRCUIT AMPACITY20 AAPPROXIMATE ICE PRODUCTIONA mbientWATER TEMP. ( F)PER 24 ( F)507090 ( kg/day )70*476 (216)456 (207)435 (197) Reference without *marks80416 (189)397 (180)379 (172)90362 (164)*355 (161)330 (150)100315 (143)301 (137)*282 (128)SHAPE OF ICEF lakeICE QUALITYA pprox.

4 70%, Ice (90/70 F, Conductivity 200 s/cm)APPROXIMATE STORAGE CAPACITYN/AELECTRIC & WATER CONSUMPTION90/70 F70/50 F ELECTRIC W (kWH/100 lbs.)915 ( )858 ( ) POTABLE WATER43 (12)57 (12) ( lbs.)EXTERIOR DIMENSIONS (WxDxH)21"-7/8" x 27-3/8" x 21-61/64" (556 x 696 x )EXTERIOR FINISHS tainless Steel, Galvanized Steel (Rear) WEIGHTNet 150 lbs. ( 68 kg ), Shipping 175 lbs. ( 80 kg )CONNECTIONS - ELECTRICP ermanent - Connection - WATER SUPPLYI nlet 1/2" FPT - DRAINO utlet 3/4" FPTICE MAKING SYSTEMA uger typeHARVESTING SYSTEMD irect Driven Auger ( 1/6 HP Gear Motor )ICE MAKING WATER CONTROLF loat SwitchCOOLING WATER CONTROLN/ABIN CONTROL SYSTEMM echanical Bin Control ( Proximity Sw. )COMPRESSORH ermetic, Model RS43C1E-CAA-219 CONDENSERAir-cooled, Fin and tube typeEVAPORATORC opper Tube on CylinderREFRIGERANT CONTROLT hermostatic Expansion ValveREFRIGERANT CHARGER-404A,1 lb.

5 (455 g)DESIGN PRESSUREHigh 427 PSIG, Low 230 BOARD CIRCUIT PROTECTIONHigh Voltage Cut-off RelayCOMPRESSOR PROTECTIONI nternal ProtectorGEAR MOTOR PROTECTIONM anual reset Circuit Breaker or Fuse REFRIGERANT CIRCUIT PROTECTIONAuto-reset High Pressure Control SwitchLOW WATER PROTECTIONF loat Switch and TimerACCESSORIES - REQUIREDIce Storage BinOPERATING CONDITIONSVOLTAGE RANGE104 - 127 VAMBIENT TEMP. 45 - 100 FWATER SUPPLY TEMP. 45 - 90 FWATER SUPPLY PRESSURE 10 - 113 PSIGI. Specifications1. F-450 MAHWe reserve the right to make changes in specifications and design without prior SUPPLY VOLTAGE115/60/1 COMPRESSOR120 RLA51 LRAGEAR MOTOR120 FLA1/6 HPFAN MOTOR115 FUSE SIZE20 AMAX. HACR BREAKER (USA ONLY)20 AMAX. CIRC. BREAKER (CANADA ONLY)20 AMINIMUM CIRCUIT AMPACITY20 AAPPROXIMATE ICE PRODUCTIONA mbientWATER TEMP. ( F)PER 24 ( F)507090 ( kg/day )70*426 (193)407 (185)387 (176) Reference without *marks80368 (167)350 (159)333 (151)90317 (144)*310 (141)287 (130)100273 (124)260 (118)*244 (111)SHAPE OF ICEC ubeletICE QUALITYA pprox.

6 80%, Ice (90/70 F, Conductivity 200 s/cm)APPROXIMATE STORAGE CAPACITYN/AELECTRIC & WATER CONSUMPTION90/70 F70/50 F ELECTRIC W (kWH/100 lbs.)956 ( )880 ( ) POTABLE WATER37 (12)51 (12) ( lbs.)EXTERIOR DIMENSIONS (WxDxH)21"-7/8" x 27-3/8" x 21-61/64" (556 x 696 x )EXTERIOR FINISHS tainless Steel, Galvanized Steel (Rear) WEIGHTNet 150 lbs. ( 68 kg ), Shipping 175 lbs. ( 80 kg )CONNECTIONS - ELECTRICP ermanent - Connection - WATER SUPPLYI nlet 1/2" FPT - DRAINO utlet 3/4" FPTICE MAKING SYSTEMA uger typeHARVESTING SYSTEMD irect Driven Auger ( 1/6 HP Gear Motor )ICE MAKING WATER CONTROLF loat SwitchCOOLING WATER CONTROLN/ABIN CONTROL SYSTEMI nfrared SensorCOMPRESSORH ermetic, Model RS43C1E-CAA-219 CONDENSERAir-cooled, Fin and tube typeEVAPORATORC opper Tube on CylinderREFRIGERANT CONTROLT hermostatic Expansion ValveREFRIGERANT CHARGER-404A,1 lb.

7 (455 g)DESIGN PRESSUREHigh 427 PSIG, Low 230 BOARD CIRCUIT PROTECTIONHigh Voltage Cut-off RelayCOMPRESSOR PROTECTIONI nternal ProtectorGEAR MOTOR PROTECTIONM anual reset Circuit Breaker or Fuse REFRIGERANT CIRCUIT PROTECTIONAuto-reset High Pressure Control SwitchLOW WATER PROTECTIONF loat Switch and TimerACCESSORIES - REQUIREDIce Storage BinOPERATING CONDITIONSVOLTAGE RANGE104 - 127 VAMBIENT TEMP. 45 - 100 FWATER SUPPLY TEMP. 45 - 90 FWATER SUPPLY PRESSURE 10 - 113 PSIG2. F-450 MAH-CWe reserve the right to make changes in specifications and design without prior General Information1. ConstructionWater SupplyInletJunction BoxCondenserFan MotorCompressorDrierControl Water ValveBin ControlIce ChuteEvaporatorFlush WaterValveControl BoxGear Motor72. Control Box LayoutNote: The above component names are identical with the wiring label, but not withthe parts Timer Board[a] Solid-State Control1) A HOSHIZAKI exclusive solid-state control is employed in the self-contained ) A printed circuit board (hereafter called timer board ) includes a stable and highquality control ) All models are pre-tested and factory-adjusted.

8 [b] Timer BoardCAUTION1. Fragile, handle very A timer board contains CMOS (Complementary Metal-Oxide Semicon-ductor) integrated circuits, which are susceptible to failure due to staticdischarge. It is especially important to use an anti-static wrist strap whenhandling or replacing the Do not touch the electronic devices on the board or the back of theboard to prevent damage to the Do not change wiring and connections. Especially, never Do not fix the electronic devices or parts on the board in the field. Alwaysreplace the whole board assembly when it goes icemaker is controlled by the timer board for the following purposes:1) To prevent the gear motor and the compressor from starting or ) To reduce remaining ice in the refrigeration ) To protect the unit in case of low water and low water ) To protect the unit in case the bin control causes 1[c] SequenceFig.

9 210 Fig. 3 EDOCTRAP10-503734 LEDOM10C441AA2 HGNITARzH06 .. of Terminals1) Terminals 1, 2 Power supply AC ) Terminals 3, 4 Control X1 (GM) and X2 (CM) closed, energize X1 (GM) in 1 sec. and X2 (CM) in 60 opened, de-energize X1 (GM) in 150 sec. and X2 (CM) in 90 ) Terminals 5, 6 Control X1 (GM) and X2 (CM) opened, de-energize X1 (GM) and X2 (CM) closed again, energize X1 (GM) in 1 sec. and X2 (CM) in 60 ) Terminals 7, 8, 9X1 (GM) is a movable contact, 7 is a make contact, and 9 is a break ) Terminals 10, 11 Control X2 (CM) opened, de-energize X2 (CM) closed, energize X2 (CM) : 1. X2 Relay is a single pole, normally open relay, and its terminals are mountedon the relay The above operation times are median. See Fig. 3 for Technical Information1. Water Circuit and Refrigeration Circuit132. Wiring Diagram[a] F-450 MAH14[b] F-450 MAH-C153.

10 Sequence of Electrical Circuit[a] When power switch is moved to ON position and flush switch to ICE position,water starts to be supplied to [b] When reservoir has been filled, gear motor starts [c] Compressor starts about 60 sec. after gear motor [d] Bin control operates, and about 6 sec. later, compressor and gear motor [e] Low water (except water-cooled model).20[f] When flush switch is moved to FLUSH position, flush water valve opens andflushes reservoir and [g] When flush timer operates (for 21 min. every 12 hours), flush water valve opensand flushes reservoir and [h] When 208-230V are supplied to circuit protect relay, it protects the circuit from beingmiswired. If the power supply is properly connected, the contact of circuit protectrelay does not move even when the coil is [i] When pressure switch opens, power supply to the control board is cut off causing thecompressor and gear motor to turn off [j] When input voltage is too low (less than 70%) gear motor fuse ( ) is blown causing compressor and gear motor to turn off Circuit Protect Relay wiring.