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Hoshizaki Condensing Unit Models SRK

1. 440 440 440 NO NO 1 1071 5 330 330 330 No NO No No 240 440 4 0 FINLOFL SWY m T S ON 7 ON E ON 2000 LON JONIL12S HILIMS 410 SS OL ON 6 ON B ON L ON 9 oN S ON ON 600 2000 70N N 1148 HILIMS 410 7S 0000 48 M WUN gegee hb h M 2 AV13M 1n02201 3A IVA 1 ELX E d 4 M z R M AYAN yal slind EA Nive x ASL 1e ASOL AN mo A id NAT M M M ng M AV138 JOUINO ZAM CNY LAM OLX 19WAOJSUPIL OMUOD i A 1941 1941 1921 45 s m l OLER q 2152 TE FS BUSA PTS Tal ez er me 1 es 4 ia ol ee fo AWN ondel sl sf WA bi t az LAM adel ol fC os dd JAWA WA MTB 1 y SYD 10H mi x 00 JAWA BUYA SAWA Bin Nivea SYM a 10 0 911 THAW ISINWH d mn JH M d HOT TANGI J 0 in YA mid 13101 A AVEO AD ad h l ro A N 3 2 mum 10 I tte da n xun ee ya Ts ines imi SYA Nid d Nu HY fof DE i 2 la f si JU 0 m
2. 440 330 330 NO NO 1141091 340 330 330 No NO NO No 440 330 330 TINO L SHA Do Hi S ON 7 ON ECON 2000 L ON DNILI3S HILIMS 410 SS 0110 1 6 oN g oN 4 oN 9 oN S oN v oN c on 270 Lon DNILI3S HILIMS 410 75 M 50000 5 aas 88 M TON A M N ASI 18 AS OL indino r K AVI 1n0 301 SAA NIV 21x gt M AVI38 Y3WIL fd LS3AYVH 3A TIVA NIVHO LLX JOBWIOJSUBI OMUOD A M M M ne M AYTEN T031N0 ZAM ONY LAM OLX i 4 EG Ty ET 1727 9 Ya E 15 Ha El m el E Hal a IOWA AAA LAM ZAM 1 JAWA n ES s ml ML ana Bin gm e a A Niva SYA MOTA A W Lo 0 1338 IS d nn AIH M 3110 14919 081 Ly yl 0 pa mis B N 9 A 0 O R TE ald 7 NI Lk 51 den Bi m nt tog 1 7 ya This 3 iki Sw Wid d NOXE ya m m WPL g IONAD ONE yA ii 7 DIMES 400 4010 HIM 0 0 o de ne nn d na M 6 il A na M i ya ya gt 1 4 m M M 7 MF m M i m E pa SAM Yi ami n gt i R R Oy 6 4 saa a Y M M 6 8 M MAOSANG ya va ya m 8 Muy 3113004 ana 12 08 m o y ee d d d dE E 55 are A A il il m A D 1022 CABOT 440 NS ya yor 3612 TEE ya e ya 19 e E n S N y n nini WoO m h ee 8125 az INBA i
3. Fig 4 53 1 1 TA 7 i a av tal E HU Harvest Water Valve o Mo Wash Valve ME A a l a 4 o a N A ms ZI r gt TE FT LAE Fill Refill Water Valve Hose 2 Fill Refill Water Valve Hol IK e Y Y YA 12 Float Switch Flush Tube BJ Y sl e YA aid PROG Drain Valve C i AH AA D LI o Drain Hose Tee Suction Hose VII Disposal This icemaker contains refrigerant and must be disposed of in accordance vvith applicable national state and local codes and regulations Refrigerant must be recovered by properly certified service personnel 54
4. DOSOD S d 10 1 gt oy JOWLL 5 1 101 U09 duind S MeH 5 1 ul 2 402 ul S d UINUUTUIU UILU G lt 2 8 youms dip ps UI 3 1041u02 Ul JOU 15 UILU E O Lp 016101 gt o TE 1 9 8 YAMS dip 95 l OL 8 6 YAMS dip ys Ul l Oz AWN 159118 Y WINLWIXEIN o ol 1 Bumes s uun 97991 vi 2 WINWIKEN N MHOUS SI 18A8U9IyM Z YAMS dip vS Kana 101 195 A1010E4 ulu G 9U 878841 WNWIUIN e 08S OG SNUIW 1S AVEU jo y Bua 10 UIU 9 vi ZAM 31949 11 sdais mo dund Ty 99 z l 15 Z S NUIIN L 6 21949 o A E PVL MYS UHM FINLOFL SIDI HEU mo a2uanbas peog 10nu02 C Control Board A Hoshizaki exclusive control board is employed in the Hoshizaki icemakers e All models are pretested and factory adjusted e For a control board check procedure see IV B Control Board Check NOTICE e Fragile handle very carefully e The control board contains integrated circuits which are susceptible to failure due to static discharge It is especially important to touch the metal part of the icemaker when handling or replacing the control board Do not touch the electronic devices on the control board or the back of the control board e Do not change wiring and connections Do not misconnect terminals e Do not short out pow
5. e The dispenser unit storage bin is for ice use only Do not store anything else in the dispenser unit storage bin I Specifications A lcemaker 1 KMS 1401MLJ with SRK 14J AC SUPPLY VOLTAGE APPROXIMATE ICE PRODUCTION PER 24 HR lb day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE ELECTRIC 8 WATER CONSUMPTION KMS SRK COMBINED ELECTRIC W kWH 100 lb WATER gal 24HR gal 100 lb CEE TIER ENERGY STAR EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CONDENSATION DRAIN OUTLET REFRIGERATION 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 CONTROL BOARD CIRCUIT PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 115VAC Supplied by SRK 14J via Factory Supplied Wire Harness Ambient Temp F 70 80 90 100 WATER TEMP F 1 80 1420 644 1379 626 1278 580 1389 630 1325 601 1199 544 1379 626 1280 581 1162 527 1344 609 1252 568 1054 478 Crescent Cube 25 8 lb 11 7 kg 1248pcs 90 70 F 70 50 F 2510 4 70 2410 4 07 250 19 5 682 48 0 1 YES 30 x24 x28 762x610x711 mm Stainless Steel Galvanized Steel Rear
6. A pabeBua soyenjoe 99 uado 28 uodo 28 AOQE OL lo 1S AHEU xau ay JO pue ay IE S MM U O seyeuluua Jaw U no old ajo o Oys UIW G 8101680 99S G 1SP ye PALAJ JI UONEAR B Jaye 095 G AD N 2 1sentey y jo pue y ye PALAY JI ajo z ll ay O U des G dn Jo ajo o 1sentey y jo pua y 1V l 42 3S AHEH 2 UOHEAHOE Jaye 08S AD N 11 e SJ9 D NA SINUIA L L IE SUEIS 91 2 Aejaq umopmus 11e s9y pue pa19mo0 9497 99 HO doele z ling uid umopinus 1 UILU 0 SUin1e1 alofo pue sdois dwog uado 51 S 4 N u do S A uuu O SHES 18UIN ISSMPBH ss l 10 UN 6 9 6 4081 18 2 SAT1 pazib1aua 9p SADH 08S 02 01 40 pazibiaua 676861 JO UILW 15114 2 LAM 2 LAM usul oes z 2 Wd 8 Aa 2 SATI 2 ZAM SADH nieo WA 8 4O1SIWUSU L SADH uedo s J gt anunuos SHINA nunuo 814 2 ZAM pezibiaua SHYING s nunuo dwog s nunuoo dwog paziGiaua Wd pazibisua dwog 2 LAM S BUIUL 4 W1 z 10 su do S 4 ya yo u S 4 4 4 950 0 S d lt
7. Hi 0 m DINE 200 4070 IN Di oo 0 0 209 ya 087 a to d n M 6 A ne i ya ya M lo m M 1 w M ug ND No A M ya a E re DA AWA AA gt SHA N d SYD 10H MI lt 6 M 6 8 ya 7 a ME ya yA hin lo J dl J dE 018 E E oO fo SE A N OT MD 1 AS WOU T vor ash 121 m nin el ya a Fo n n SSN H 20078 misi m o oe m ba ilin MW S o Nil en i Z m Be 4 L y la Xa ST G D 100140 NIG 40 Ny Ni 4975 y go o on ya nu See 4 m l Dd mn 4 di Levis 107 4 ya 5 M s x Q s MOE ya UT YA 1 D Y 2 ug ug ag vorasn Y val m LVISOWUEHL sex e lt aN LH 2 v Ls SVHd AAS 1 09 0 2 800 25 0 970 91 4 67 662 UNO 2 9 O OEL 4 674 992 MO MO UMS JEISOWOUL yy DISd zzFlve 1410 0164 2792 mo 1n9 UONMS SINSSOIJ UBIH y
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9. Department Web Site www hoshizaki com NOTE To expedite assistance all correspondence communication MUST include the following information Model Number e Serial Number e Complete and detailed explanation of the problem IMPORTANT This manual should be read carefully before the icemaker is serviced Read the warnings and guidelines contained in this booklet carefully as they provide essential information for the continued safe use service and maintenance of the icemaker Retain this booklet for any further reference that may be necessary CONTENTS Important Safety INN lar ano 5 KISENA Aaaa 7 A A EE 7 TKMS T401MLJI with SRRA iss GE ed EE 7 2 KMS 1401 MLJ with SRK 14J3 usina 8 B Condensina Uni aaa a aaa 9 r m n 9 2 5 ama 10 Mec AMON saci casi ER EE o OE OE aa DA nn 11 SA 11 WM n EN OK EN NE N OE OE EE ER 11 2 Condensing Uni oo 12 B Seguence af Operation osse Ro EER RE as 13 1 Sequence Cycles and Shutdown oo 13 a 1 Minute Fill Cycle A 13 b initial Harvest Cycle aos 13 Freeze Cycle ee A 13 d PUM DOU Cycle oran 14 e Harvest Cycle ER N EE EE a ajaja kjai 14 ES ole AR AA 14 2 Seguence FIOW Nar asse R 15 C Control Baard acond 16 Control Board Layo t osmosis 17 2 LED Lights and Audible Alarm Safeties 18 3 Controls and AQUI rusia 19 a Default Dip Switch SMN uan 19 b Harvest Time
10. Pump Motor energized in freeze o x in Harvest Pump Timer and Drain Valve in e LED 4 X4 Relay Pump Out K1 Connector Pin 6 K2 Connector 6 Fill Water Valve Initial Fill Control Transformer and Freeze Fill only e LED 1 X1 Relay 10 5VAC Harvest Water Valve and K1 Connector Pin 1 9 X12 Relay Harvest only 7 10 Supply Voltage 8 Open G Control Board Part Number 2A3792 01 7 2 LED Lights and Audible Alarm Safeties At startup a 5 second delay occurs while the control board conducts an internal timer check A beep occurs when the control switch is moved to the ICE position The red LED indicates proper control voltage and remains on unless a control voltage problem occurs The green LEDs 1 through 4 energize and sequence from initial startup as listed in the table belovv Note that the order of the LEDs from the outer edge of the control board is 1 4 3 2 For details see II B Sequence of Operation Energized Time LEDs are On 7 Components Hin Max ag Minute Fill Cycle 14 wi 1707151212 minute O 3 to 5 minutes Comp FMRs harvest pump PM HGVs timer setting 5 minutes freeze timer 30 to 35 minutes PM LLVs setting VVV1 for first 1 min Pump Out Cycle 1 3 2 Comp FMRs 110 seconds 120 seconds PM HGVs DV The built in safeties shut down the icemaker and have alarms as listed below No of Beeps 1 High Evaporator Temp Check for harvest problem stuck HGVs or relay hot tempe
11. check thermistor resistance follow the steps below 1 Turn off the power supply 2 Remove the front panel then move the control switch to the OFF position 4 Remove the thermistor 5 Immerse the thermistor sensor portion in a glass containing ice and water for 2 or 3 minutes 6 Disconnect the thermistor connector from CB K3 white connector and check resistance between thermistor leads Normal range is 4 7 to 6 2 kO If outside the normal range replace the thermistor See V B Important Notes for Component Replacement If within the normal range continue to next step 7 Replace the thermistor in its correct position See V B Important Notes for Component Replacement 8 Reconnect the thermistor connector to CB K3 white connector 9 Replace the control box cover right side and top panels in their correct positions 10 Move the control switch to the ICE position 11 Replace the front panel in its correct position 3 Remove the top and right side panels then remove the control box cover 12 Turn on the power supply 13 Once the harvest cycle starts Comp energizes begin timing the harvest cycle 14 The harvest timer and harvest cycle should terminate within 2 to 5 minutes If the harvest cycle does not terminate within 2 to 5 minutes replace CB Legend CB control board Comp compressor 39 F Diagnostic Charts 1 No Ice Production No Ice Production Possible Cause 1 Po
12. follovving positions Dip SvitchNo 1 2 3 4 5 6 7 8 9 10 Dip Switen No 1 2 3 Ja 5 KMS 1401MLJ S4 Dip Switch S5 Dip Switch Do Not Adjust gt Refill Counter Efe through 5 Float Switch Selector 1 b Harvest Timer S4 dip switch 1 2 The harvest timer starts counting when the thermistor reads 48 F 9 at the evaporator outlet and the control board reads the thermistor s 3 9 kQ signal The harvest timer is factory set and generally no adjustment is required However a setting longer than the factory setting may be advised in cases where the flush provided at harvest needs to be prolonged for extra cleaning Before changing this setting contact Hoshizaki Technical Support at 1 800 233 1940 for recommendations Keep in mind that setting the harvest timer to a longer setting decreases 24 hour production Note that the pump out timer S4 dip switch 3 amp 4 acts in place of the harvest timer during cycles with a pump out For details see II C 3 c Pump Out Timer S4 dip switch 38 4 180 c Pump OutTimer S4 dip switch 3 4 The 1st pump out occurs after the 11th freeze cycle then every 10th cycle thereafter VVhen a pump out is called for the X10 relay is energized and the X13 relay is de energized to allovv the drain valve to energize The pump motor stops for 2 seconds then the X11 relay energizes allowing the pump motor and drain valve to energize Water is rem
13. no voltage is present see IV B Control Board Check If voltage is present check solenoid continuity If the water tank fills but the icemaker fails to start harvest check for open F S See IV D 1 Float Switch Check Check termination of 1 minute timer in CB See IV B Control Board Check 30 4 Initial Harvest Cycle LEDs 1 4 and 2 are on Comp FMRs HGVs X10 relay WV2 X12 and X13 relays energize VVV1 de energizes CB monitors the warming of the evaporator via the thermistor located on the suction line When the thermistor reaches 48 F 9 C CB reads 3 9 kQ from the thermistor and turns harvest termination over to the harvest timer S4 dip switch 1 amp 2 The harvest timer has settings of 60 90 120 and 180 seconds The pump out timer S4 dip switch 3 amp 4 acts in place of the harvest timer during cycles with a pump out S4 dip switch 5 amp 6 WV2 and X12 relay are energized during harvest for a maximum of 6 minutes or the length of harvest minus 50 seconds whichever is shorter 50 seconds before the harvest timer terminates harvest pump timer starts LED 4 turns off WV2 and X12 relay de energize Harvest Pump Timer LEDs 1 3 and 2 are on Comp FMRs HGVs and X10 relay continue LED 4 turns off WV2 and X12 relay de energize CB K1 connector pin 6 O wire LED 3 turns on and X11 relay energizes CB K1 connector pin 5 DBU wire allowing PM to energize for the last 50 seconds of harvest S4 dip sw
14. of the green sequence LEDs from the outer edge of the board is 1 4 3 2 a 1 Minute Fill Cycle LED 1 is on VVV1 opens and the fill period begins After 1 minute CB checks for closed F S If F S is closed the harvest cycle begins If not VVV1 will remain energized through additional 1 minute cycles until water enters the water tank and F S closes This serves as a low water safety to protect the water pump b Initial Harvest Cycle LEDs 1 4 and 2 are on Comp FMRs HGVs X10 relay WV2 X12 relay and X13 relay energize VVV1 de energizes CB monitors the warming of the evaporator via the thermistor located on the suction line When the thermistor reaches 48 F 9 C CB reads 3 9 kO from the thermistor and turns harvest termination over to the adjustable harvest timer S4 dip switch 1 amp 2 The harvest timer has settings of 60 90 120 and 180 seconds The pump out timer S4 dip switch 3 amp 4 acts in place of the harvest timer during cycles with a pump out S4 dip switch 5 amp 6 WV2 and X12 relay are energized during harvest for a maximum of 6 minutes or the length of harvest minus 50 seconds whichever is shorter 50 seconds before the harvest timer terminates harvest pump timer starts LED 4 turns off WV2 and X12 relay de energize Harvest Pump Timer LEDs 1 3 and 2 are on Comp FMRs HGVs X10 relay and X13 relay continue LED 4 turns off WV2 and X12 relay de energize LED 3 turns on and X11 relay energizes all
15. operation Do not adjust Adjustment outside of the factory default setting may result in damage to the icemaker Depending on the harvest pump timer setting the pump motor either stays off or is energized the last 50 seconds of harvest When the pump motor is energized water circulates over the evaporator The harvest water valve is open during harvest for a maximum of 6 minutes or the length of harvest minus O or 50 seconds determined by the harvest pump timer setting whichever is shorter When S4 dip switch 7 is in the on position and harvest begins X10 relay energizes and allows the harvest water valve X12 and X13 relays to energize A lockout circuit is created using the X10 X12 and X13 relays This prevents the drain valve from energizing during harvest pump timer See III B Wiring Diagram 50 seconds before harvest termination LED 4 goes off de energizing WV2 harvest water valve and X12 relay X13 relay remains energized through the holding circuit through X10 and X13 relays Next LED 3 on the control board turns on and X11 relay energizes allowing the pump motor to energize The pump motor is energized the last 50 seconds of harvest S4 Dip Switch Setting Pump Motor No 7 7 No7 Time gt f Factory Use S4 dip switch 8 Factory set for proper operation Do not adjust This must be left in the factory default position g Freeze Timer S4 dip switch 9 amp 10 NOTICE Adjust to proper specification o
16. 37 o tt has aaa aa RE ee 37 2 Float 16 ERROR B d AA aaa 38 Thermistor A balas na 39 DIAGNOSE BE ER EE yaxa EBEN 40 1 No les Producir aaa ici 40 A B EE paya aaa a Waa aa a aaa EE EO aa ana anaa m s yabqu bu bi 41 SLOW lee PROC TIN sas ls aa OS N eN RR alan mal na AR GN ee 43 V Replacement of Components ass KARRE KNAAG AI GEGEE NE didib 44 A Service for Refrigerant LIS ui 44 1 Refrigerant RECOVETY ies nanangi ui a a RS aiaa 44 LZ L a al cs 45 3 Evacuation and Recharge R AOAA esse KENS AAN AANGE Se SEE RGN GRA ONS ME KEN ESEG EDE 45 B Important Notes for Component 1 47 V Cleaning and Maintenance 48 A Cleaning and Sanitizing Instructions sionista 48 T Cleaning ag sawana wak a aia ian saa aga OE SIA KIE AI 49 2 Sanitizing Procedure Following Cleaning Procedure 50 B MAM NINA sensaci n 51 C Preparing the lcemaker for Periods of 5 52 V UD os aaa RAD IA aaa 54 important Safety Information Throughout this manual notices appear to bring your attention to situations which could result in death serious injury damage to the icemaker or damage to property A WARNING Indicates a hazardous situation which could result in death or serious injury NOTICE Indicates a situation which could result in damage to the app
17. EST button The correct lighting sequence is 1 4 3 2 Note that the order of the LEDs from the outer edge of CB is 1 4 3 2 Components e g compressor will cycle during the test Following the test the icemaker begins operation at the 1 minute fill cycle If the LEDs do not light as described above replace CB 4 To verify voltage output from CB to the components slide the CB K1 connector out far enough to allow multimeter lead contact With the icemaker in the cycle to be tested check output voltage from the corresponding pin on CB K1 connector to ground If output voltage is not found and the appropriate LED is on replace CB Legend CB control board CT control transformer 34 C Bin Control Check and Cleaning This icemaker uses a BC vvith a lever actuated proximity svvitch to control the ice level in the storage bin No adjustment is required 1 Bin Control Check To check BC follow the steps below 1 Turn off the power supply 2 Remove the front panel then move the control switch to the OFF position 3 Remove the top and right side panels Remove the control box cover then clear any ice avvay from BC 4 Check BC vvire harness connections See Fig 1 5 Disconnect BC connector from CB K4 red connector 6 Check for continuity across the wires of BC connector When the actuator paddle is not engaged BC switch is closed If open check that the wire harness connector is properly connected and that the act
18. El Loft Foo 0276 mu o 1 l TUL Nig 55 Y y am 1 18 ya lo TT O O a o o ya r 0 l el Og s n ud de ali aa vor asna YA F uu 1 MD LVISONBZHL x z 3 N 1 He b fl 21 M 2 ISVH E MYS er N O N 3 VVire Harness Connections JEANAN do anes ae enman AOJOE1UO9 ini We el e T Ha iddns 1amod aseud aaiu1 7 iddns 1amod aseud albuis z7 SAA aul p nb l ATI 011402 40 A BA 586 10U ADH 4 pusbe7 p uuo A1012e n n SIN nun MUS Ssuoh uuo2 SSIUJEH AIM SHUYM M 101014 A yuld ci u 5 H UMOJQ H4Y 49e 9 419 9P09 40102 27 C Performance Data 1 KMS 1401MLJ with SRK 14J APPROXIMATE ICE AMBIENT TEMP PRODUCTION TER 24 HR F C 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 em G 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 28 800 BTU h AT 90 F 32 C WT 70 F 21 C CONDENSER VOLUME 226 CU IN SRK 14J Note 1 Pressure data is recorded at 5 minutes into f
19. GERANT COMPRESSOR CONDENSER COMPRESSOR PROTECTION FAN MOTOR PROTECTION REFRIGERANT CIRCUIT PROTECTION REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE OPERATING CONDITIONS ACCESSORIES SUPPLIED REQUIRED 208 230 60 1 3 wire with neutral for 115V 115VAC Supplied to KMS via Factory Wire Harness 13 5 A 5 Min Freeze AT 104 F WT 80 F 20A 20A 50 x 17 x 28 1270 x 432 x 711 mm 52 3 8 x 19 1 2 x 43 1330 x 495 x 1092 mm Galvanized steel Net 230 Ib 104 kg Shipping 275 lb 125 kg Main Povver Supply Permanent Connection SRK to KMS VVire Harness Connection Liquid Line 1 1 16 12 UNF Fitting 10 Parker Suction Line 1 1 8 12 UNF Fitting 11 Parker Hermetic Model CS16K6E PFV 255 Air Cooled Fin and Tube Type Auto Reset Overload Protector Internal Thermal Protection Auto Reset High Pressure Svvitch Auto Reset Discharge Line Thermostat Headmaster C P R 160 PSI 16 Ib 5 oz 7400g Condensing Unit 15 Ib 14 oz 7200g Icemaker 0 Ib 7 1 oz 200g High 467 PSIG Low 230 PSIG VOLTAGE RANGE 187 253VAC AMBIENT TEMP Outdoor use 20 122 F Leg 2 pcs Hex Head Bolt w Washer M8x16 8 pcs Hex Nut M8 8 pcs Compatible KMS Icemaker Note We reserve the right to make changes in specifications and design without prior notice 2 SRK 14J3 Data Pending Note VVe reserve the right to make changes in specifications and design vvithout prior notice 10
20. Hoshizaki America nc Modular Crescent Cuber Serenity Series Model KMS 1401MLJ Including Condensing Unit Models SRK 14J 3 SERVICE MANUAL A Superior Degree of Reliability www hoshizaki com Number 73192 ssued 12 28 2011 A WARNING Only qualified service technicians should install and service the icemaker To obtain the name and phone number of your local Hoshizaki Certified Service Representative visit www hoshizaki com No service should be undertaken until the technician has thoroughly read this Service Manual Failure to service and maintain the icemaker in accordance with this manual will adversely affect safety performance component life and warranty coverage and may result in costly water damage Proper installation is the responsibility of the installer Product failure or property damage due to improper installation is not covered under warranty Hoshizaki provides this manual primarily to assist qualified service technicians in the service of the icemaker 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 770 487 3360 E mail techsupport hoshizaki com HOSHIZAKI AMERICA INC 618 Highvvay 74 South Peachtree City GA 30269 Attn Hoshizaki Technical Support
21. ICE position Then place the service switch in the DRAIN position 4 Replace the front panel in its correct position then turn on the power supply for 2 minutes 5 Turn off the power supply 6 Remove the front top and right side panels then move the control switch to the OFF position 7 Disconnect the vent tube and the flush tube from the top of F S housing then remove F S assembly Remove the rubber boot from the bottom of F S assembly See Fig 2 8 Remove the retainer rod from the bottom of F S assembly then remove the float Be careful not to bend the retainer rod excessively when removing it 9 Wipe down F S assembly s housing shaft float and retainer rod with a mixture of 1 part Hoshizaki Scale Away and 25 parts warm water Clean the inside of the rubber boot and hose with cleaning solution Rinse the parts thoroughly with clean water 10 Reassemble F S assembly and replace it and the rubber boot in their correct positions Reconnect the vent tube and the flush tube 11 Replace the right side and top panels in Vent Tube their correct positions 12 Move the control svvitch to the ICE Shaft position nn Float Switch 13 Replace the front panel in its correct Housing position 14 Turn on the power supply to start the automatic icemaking process Legend CB control board F S float switch Rubber Boot and Hose Fig 2 H ron _ Retainer Rod 38 E Thermistor Check To
22. II General information A Construction 1 lcemaker Spray Tubes Hot Gas Valve VVash Valve Liquid Line Valve Service Valve High Side Drier Service Valve Lovv Side Thermistor Control Board ps Control Box Fill Refill Water Valve WV1 Control Switch Service Switch Fuse Pump Motor itch B Float Svvitch Drain VVater Valve Bin Control Switch Cover Switch Bracket Switch Mount Extension Bracket Bin Control 11 2 Condensing Unit Headmaster C P R Hot Gas Valves Liquid Line Valve Condenser Shut Off Valve Low Side 5 Caro eee pa VE pt Lara pisces A ZA Check Valve Receiver Thermostat Discharge Pipe Accumulator SRK 14J3 Control Box Fuse Fan Motors and Fan Blades Shut Off Valve High Side High Pressure Switch B Sequence of Operation gt Sequence Cycles and Shutdown The steps in the sequence are as outlined below When power is supplied the red POWER OK LED and the green BC CLOSED LED on the CB turn on If yellow BC OPEN LED is on the icemaker will not start In this case clear ice away from BC actuator paddle in the storage bin area A 5 second delay occurs at startup Note that the order
23. Net 143 Ib 65 kg Shipping 177 Ib 80 kg Wire Harness Connection from SRK to KMS Inlet 1 2 FPT Outlet 3 4 FPT 5 8 OD Hard Tube Liquid Line 1 1 16 12 UNF Fitting 10 Parker Suction Line 1 1 8 12 UNF Fitting 11 Parker Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe and Float Switch N A Mechanical Bin Control In SRK Air Cooled Remote Condensing Unit SRK 14J Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve Headmaster C P R in SRK 14J 160 PSI R404A 16 Ib 5 oz 7400g Icemaker 0 Ib 7 1 oz 200g Cond Unit 15 Ib 14 oz 7200g High 467PSIG Low 230PSIG High Voltage Cut Out Internal Auto Reset High Pressure Switch in SRK 14J Auto Reset Discharge Line Thermostat in SRK 14J Float Switch N A Dispenser Unit or Ice Storage Bin SRK 14J Remote Condensing Unit VOLTAGE RANGE 187 253VAC 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 2 KMS 1401MLJ with SRK 14J3 Data Pending Note We reserve the right to make changes in specifications and design without prior notice B Condensing Unit 1 SRK 14J AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE EXTERIOR DIMENSIONS WxDxH DIMENSIONS INCLUDING LEGS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC REFRI
24. copper tube of the same diameter and length when replacing valve lines 47 VI Cleaning and Maintenance This icemaker must be cleaned and maintained in accordance vvith the instruction manual and labels provided vvith the icemaker Consult vvith your local Hoshizaki Certified Service Representative about cleaning and maintenance service A WARNING e Only qualified service technicians should service this icemaker e CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after any cleaning or maintenance is done to the icemaker Make sure that none have fallen into the dispenser unit storage bin NOTICE The dispenser unit storage bin is for ice use only Do not store anything else in the dispenser unit storage bin A Cleaning and Sanitizing Instructions This icemaker must be cleaned and sanitized at least once a year More frequent cleaning and sanitizing may be required in some water conditions A WARNING e To prevent injury to individuals and damage to the icemaker do not use ammonia type cleaners e Carefully follow any instructions provided with the bottles of cleaning and sanitizing solution e Always wear liquid proof gloves and goggles to prevent the cleaning and sanitizing solutions from coming into contact with skin or eyes NOTICE To prevent damage to the water pump seal do not operate the icemaker with the control switch in the SERVICE position when the water tank is e
25. cy control is factory set and generally no adjustment is required However where water quality is bad and the icemaker needs a pump out more often the pump out frequency can be adjusted The pump out frequency control S4 dip switch 5 amp 6 can be set to have a pump out occur every cycle or every 2 5 or 10 cycles Timing of the first pump out is dependent on S4 dip switch 5 6 settings See the table below S4 Dip Switch Setting Pump Out Frequency Every cycle After 2nd freeze cycle O Every 5 cycles After 6th freeze cycle FE Every 2 cycles After 3rd freeze cycle N ON Every 10 cycles After 11th freeze cycle e Harvest Cycle LEDs 1 4 and 2 are on Same as the initial harvest cycle See II B 1 b Initial Harvest Cycle Note Icemaker continues to cycle until BC is satisfied or power is turned off The icemaker always restarts at the 1 minute fill cycle f Shutdown When BC is activated BC open the yellow BC OPEN LED comes on The icemaker then shuts dovvn as outlined in the table belovv Cycle at Bin Control Activation Fill Cycle 15 seconds after activation Harvest Cycle At the end of the harvest cycle or up to 15 seconds into the freeze cycle if activated at the end of the harvest cycle Freeze Cycle 15 seconds after activation if activated at least 15 seconds before the 5 minute short cycle protection timer terminates Otherwise at the end of the next harvest cycle Legend CB control board Comp compre
26. eaning solution Rinse the parts thoroughly with clean water e Reassemble the float switch assembly and replace it and the rubber boot in their correct positions Reconnect the vent tube and the flush tube f Replace the right side panel in its correct position 9 Remove the insulation panel and splash curtain then pour the cleaning solution into the water tank 10 Move the service switch to the WASH position 11 Replace the splash curtain insulation panel and front panel in their correct positions 12 Turn on the power supply to start the washing process 13 14 15 Replace the front panel in its correct position then turn on the power supply for 2 minutes Turn off the power supply after 30 minutes Remove the front panel Move the service svvitch to the DRAIN position 16 Turn off the power supply then remove the front panel 17 Move the control svvitch to the ICE position 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 49 21 Remove the front panel 22 Move the control svvitch to the SERVICE position then move the service svvitch to the VVASH position 23 Replace the front panel in its correct position 24 Turn on the power supply to rinse off the cleaning solution 25 26 27 Move the service switch to the DRAIN position Turn off the power supply afte
27. ed and not bypassing The evaporator temperature should be dropping Make sure TXVs and HM are operating properly Check that DV is not leaking by water flowing down the potable drain Check for proper unit pressures see III C Performance Data or an inoperative Comp Disconnect the black K5 F S connector When 5 or more minutes have elapsed in the freeze cycle the icemaker should switch out of the freeze cycle After the icemaker switches out of freeze reconnect the black K5 F S connector to CB If the icemaker remains in freeze with F S disconnected replace CB To check F S see IV D Float Svvitch Check and Cleaning Note Normal freeze cycle will last 30 to 35 minutes depending on model and conditions Cycle times and pressures should follow performance data provided in this manual See III C Performance Data 32 6 Pump Out Cycle LEDs 1 3 and 2 are on 10 20 second pump out The 1st pump out occurs after the 11th freeze cycle then every 10th cycle thereafter Comp and FMRs remain energized HGVs and X10 relay energize LLVs de energize PM de energizes for 2 seconds then X11 relay energizes allowing PM and DV to energize for 10 seconds PM energized through X11 relay energized terminal 4 BR wire and terminal 6 R wire then through control switch terminal 6 R wire and terminal 5 R wire DV energized through X10 relay energized terminal 5 V wire and terminal 3 Y wire then through X13 relay de ener
28. er supply to test for voltage e Always replace the whole control board assembly if it goes bad 16 1 Control Board Layout G Control Board e ALARM RESET Button e S4 Dip Switch e OUTPUT TEST Button used to test relays on control board OUTE 00078 09 2 ln Bin Control Switch Closed LED green Bin Control Switch Open LED yellow K3 white Connector Harvest Control thermistor e Part Number e K4 red Connector pl eon 2 i Alarm Buzzer o xf ooo Bin Control 8 g 2 E e S5 Dip Switch x x e Power LED red lights when 10 5VAC is supplied to K2 connector e Relay LEDs 4 indicate which relays are energized and which K1 8 connector pins are energized o e LED 2 X2 Relay il N o pe x A g black Connector z Float Switch 7 Label 2 control board revision level indicated on label on side of relay POV ER OK LED2 K1 Connector Pins 1 through 10 9 BOS o 81 9 Magnetic Contactor 777 Fine B 13 Relay holding 77 O lo circuit during Harvest K1 Connector Pin 3 ex P O lo ump Timer and e LED 3 X3 Relay ob Drain Valve during LED 3 on Pump Out K1 Connector Pin 5 o op 2 Hot Gas Valves KMS and energized during harvest SRK and X10 Relay 10 9 pump timer 3 Liquid Line Valves LED 3 off o 4 Pump Motor freeze K1 Connector Pin 4 5 X11 Relay
29. ff the power supply 20 Reconnect the thermistor connector to the control board K3 vvhite connector Reconnect the water pump connector 21 Close the inlet water supply line drain valve 22 Remove all ice from the dispenser unit storage bin and clean the dispenser unit storage bin liner using a neutral cleaner Rinse thoroughly after cleaning 23 Replace all removed parts and panels in their correct positions Harvest Water Valve Hose
30. fill cycle starts after harvest see IV D Float Switch Check and Cleaning If the thermistor reading is in proper range and CB fails to terminate the harvest cycle and initiate the freeze cycle replace CB 31 5 Freeze Cycle LED 1 and 4 are on Comp FMRs and PM remain energized CB K1 connector pin 5 DBU wire de energizes and K1 connector pin 4 R wire energizes to prevent PM interruption LLVs energize WV1 and LED 4 energize for 1 min HGVs X10 X11 and X13 relays de energize Refill LEDs 1 and 4 are on The KMS 1401MLJ uses a single F S with a double F S UF S refill initiation float switch selector setting S5 dip switch 1 and is set for 1 refill S5 dip switch 2 through 5 When the freeze cycle starts CB monitors UF S No UF S exists on the KMS 1401MLJ therefore CB reads an open UF S immediately when the freeze cycle starts and initiates a refill CB energizes VVV1 through X10 relay Since there is no UF S to close and terminate the refill the refill lasts for the maximum 1 minute During the 1 minute refill LED 4 is on Comp FMRs LLVs and PM remain energized Freeze Termination LED 1 is on The icemaker is held in freeze by a 5 minute short cycle protection timer When F S opens the freeze cycle terminates Diagnosis Minimum freeze time is 5 minutes During the first 5 minutes of freeze confirm that Comp FMRs PM and LLVs are energized VVV1 is energized for 1 min and HGVs and WV2 are de energiz
31. ge manifold valves then open the high and lovv side refrigerant shutoff valves Never allovv the oil in the vacuum pump to flovv backvvards 3 Allovv the vacuum pump to pull dovvn to a 29 9 Hg vacuum Evacuating period depends on pump capacity 4 Close the lovv side valve and high side valve on the gauge manifold 5 Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigerant service cylinder Remember to loosen the connection and purge the air from the hose For the required refrigerant charge see the nameplate on the condensing unit or the rating label inside the icemaker Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 latest edition be used 6 A liquid charge is required when charging an R 404A system to prevent fractionation Place the service cylinder on the scales if the service cylinder is not equipped with a dip tube invert the service cylinder then place it on the scales Open the high side valve on the gauge manifold 7 Allovv the system to charge vvith liquid until the proper charge vveight is met 8 If necessary add any remaining charge to the system through the low side NOTICE To prevent compressor damage use a throttling valve or liquid dispensing device to add the remaining liquid charge through the low side refrigerant shutoff valve with the icemaker running 9 Close the high and low side refrigerant shutoff valves Close the hig
32. gized terminal 6 Y wire and terminal 2 LBU wire then through X11 relay energized terminal 3 LBU wire and terminal 5 GY wire This pump out removes contaminants from the water tank through DV and allows for a power flush of F S Diagnosis PM Operation If PM does not come on check CB K1 connector pin 5 DBU wire X11 relay coil voltage to a neutral W wire for 115VAC If LED 3 is on and 115VAC is not present replace CB If 115VAC is present X11 relay should energize and X11 terminals 4 BR wire and 6 R wire should be closed Check X11 relay terminal 6 R wire for 115VAC to a neutral W wire If 115VAC is not present check X11 relay coil and contact continuity If 115VAC is present and PM is still not energized check control switch continuity between terminal 5 R wire and 6 R wire If closed check PM windings and capacitor DV Operation If water does not pump out check CB K1 connector pin 1 V wire power supply for DV operation and CB K1 connector pin 2 P wire X10 relay coil voltage for DV operation to a neutral W wire for 115VAC If 115VAC is not present on either circuit replace CB If 115VAC is present X10 relay terminals 1 Y wire and 5 V wire should be closed Check X10 relay terminal 3 Y wire to a neutral W wire for 115VAC If 115VAC is not present on terminal 3 Y wire check X10 relay coil and contact continuity If 115VAC is present on X10 relay terminal 3 Y wire go to X13 relay a
33. h and low side gauge manifold valves then disconnect the gauge manifold hoses 10 Cap the refrigerant shutoff valves to prevent a possible leak 46 B Important Notes for Component Replacement NOTICE When replacing a component listed below see the notes to help ensure proper operation Component Notes 988582 0 Compressor 1 Phase Install a new start capacitor run capacitor and start relay 3 Phase Install a new magnetic contactor Thermostatic Attach the thermostatic expansion valve bulb to the suction line in the same location as Expansion Valve the previous bulb e The bulb should be between the 10 and 2 o clock positions on the tube e Secure the bulb with the clamp and holder then insulate it Hot Gas Valves e Replace the strainer if applicable Liquid Line Valves Install a new capacitor Pump Motor Install a new capacitor Thermistor e Attach the new thermistor to the suction line in the same location as the previous thermistor e The thermistor should be at the 12 o clock position on the tube e Smoothly fill the recessed area of the thermistor holder with high thermal conductive type sealant Hoshizaki America part number 4A0683 01 Silicone Heat Sink Compound 10 8108 manufactured by GC Electronics KE 4560 RTV manufactured by ShinEtsu Silicones or equivalent are recommended e Secure the thermistor with the holder then insulate it Be very careful to prevent damage to the leads Use
34. ier from overheating Do not allow the drier to exceed 250 F 121 C 1 Refrigerant Recovery The condensing unit is provided with refrigerant shutoff valves and the icemaker is provided with refrigerant service valves Using proper refrigerant practices recover the refrigerant Recovery via the condensing unit s refrigerant shutoff valves is recommended Store the refrigerant in an approved container Do not discharge the refrigerant into the atmosphere 44 2 Brazing A WARNING e R 404A itself is not flammable at atmospheric pressure and temperatures up to 176 F 80 C e R 404A itself is not explosive or poisonous However when exposed to high temperatures open flames R 404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous Do not use silver alloy or copper alloy containing arsenic e Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG DO NOT use R 404A as a mixture with pressurized air for leak testing 1 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG Note Because the pipes in the evaporator case are specially coated to resist corrosion it is important to make connections outside the evaporator case when possible If it is necessary to braze inside the evaporator case u
35. inal ID copper water tubing or equivalent 5 Harvest Water Valve a Screen or orifice clogged b Defective 41 Freeze Up Possible Cause 6 Float Svvitch a Dirty sticking See IV D Float Switch Check b Defective and Cleaning 7 Refrigerant Charge 8 Control Board a Harvest timer S4 dip switch 1 amp 2 set too short See II C 3 Controls and b Harvest pump timer S4 dip switch 7 not in factory default position Adjustments and IV B Control Board Check c Defective 9 Bin Control a Actuator does not move freely See IV C Bin Control Check and Cleaning 10 Thermistor a Loose disconnected or defective See IV E Thermistor Check 1 Evaporator a Scaled up Damaged Dirty Out of position 2 Spray Tubes Spray a Guides 0 3 Refrigerant Charge Lovv 4 Control Board a Freeze timer S4 dip switch 9 amp 10 set incorrectly 7070 5 Fil Refill or Harvest Water Valve a Leaking by 6 Float Switch a Float does not move freely and Cleaning 7 Pump Motor 8 Thermostatic Expansion Valve 9 Headmaster GPR 10 Liquid Line Valves KMS 8 SRK 42 3 Low Ice Production Low Ice Production Possible Cause Long Harvest Cycle 1 Evaporator a Scaled up 2 Spray Tubes and or Spray Guides b Out of position 3 Refrigerant Charge 4 Water Supply b External water filters clogged Insufficient water line
36. ion e rr o Clean the dispenser unit storage bin liner using a neutral cleaner Rinse thoroughly after cleaning 16 Turn on the power supply to start the automatic icemaking process 50 B Maintenance This icemaker must be maintained individually referring to the instruction manual and labels provided vvith the icemaker A WARNING e Only qualified service technicians should service this icemaker e Move the control switch to the OFF position and turn off the power supply to the SRK condensing unit before servicing the KMS or SRK Place the KMS disconnect if applicable in the off position Lockout Tagout to prevent the power supply from being turned back on inadvertently 1 Stainless Steel Exterior To prevent corrosion wipe the exterior occasionally with a clean soft cloth Use a damp cloth containing a neutral cleaner to wipe off oil or dirt buildup 2 Storage Bin Scoop e Wash your hands before removing ice from the storage bin Use the plastic scoop provided storage bin accessory e Clean the scoop using a neutral cleaner Rinse thoroughly after cleaning 3 Dispenser Unit Storage Bin e The dispenser unit storage bin is for ice use only Do not store anything else in the dispenser unit storage bin e Clean the dispenser unit storage bin liner using a neutral cleaner Rinse thoroughly after cleaning 4 Condenser Check the condenser once a year and clean the coil if required by using a brush o
37. it nameplate and adequate water supply Check CB using the steps in IV B Control Board Check Check the dip switch settings to assure that S4 dip switch 3 4 7 8 9 10 and S5 dip switch 1 through 5 are in the factory default position S4 dip switch 1 2 5 6 are cleaning adjustments and the settings are flexible For factory default settings see II C 3 a Default Dip Switch Settings As you go through the procedure check to assure the components energize and de energize correctly If not those components and controls are suspect 1 Turn off the power supply then access the control box Clear any ice from BC 2 Turn on the power supply then move the control switch to the ICE position A 5 second delay occurs The red POWER OK LED and the green BC CLOSED LED on CB come on If the yellow BC OPEN LED is on check BC See IV C Bin Control Check and Cleaning 3 1 Minute Fill Cycle LED 4 is on WV1 energizes After 1 minute CB checks for a closed F S If F S is closed the harvest cycle begins If closed continue to step 4 If F S is open WV1 remains energized through additional 1 minute fill cycles until water enters the water tank and F S closes low water safety protection during initial start up and at the end of each harvest Diagnosis Confirm that water enters the water tank If not check that the water supply shut off valve is open and screens or external filters are clear Check supply voltage at WV1 solenoid If
38. itch 7 setting NOTICE S4 dip switch 7 must remain in the factory default position of 7 on Otherwise PM will not energize during the last 50 seconds of harvest The minimum total time allowed by CB for a complete harvest cycle is 2 minutes At the end of harvest CB checks the position of F S and proceeds to the next cycle if it is closed or calls for a 1 minute fill cycle if it is open Diagnosis Check that evaporator is warming and Comp FMRs and HGVs remain energized VVV2 is energized during harvest for a maximum of 6 minutes or the length of harvest minus 50 seconds Harvest Pump Timer S4 dip switch 7 whichever is shorter Average initial harvest eycle at factory setting is 2 to 3 minutes 1 5 minutes after initial harvest begins touch Comp discharge line s it hot If not check that Comp is energized refrigerant pressures are in range HGVs are energized and open LLVs are de energized and closed If discharge line is hot place a thermometer on the suction line next to the thermistor Has it warmed to 48 F 9 C or warmer Confirm thermistor status See IV E Thermistor Check If temperature has been reached check that WV2 de energizes LED 4 off and X11 relay energizes LED 3 on allowing PM to energize and circulate water over the evaporator for the last 50 seconds of harvest If not make sure S4 dip switch 7 is in the factory default position Check CB K1 connector pin 5 DBU wire and X11 relay for 115VAC If 1 minute
39. l winding open single phase only e Protector tripped f Compressor defective 16 Hot Gas Valves KMS 8 SRK a b Open in freeze cycle 17 Thermistor a See IV E Thermistor Check 18 Pump Motor b d Closed in harvest cycle Loose disconnected or defective Motor winding open Bearing worn out or locked rotor Defective capacitor Mechanical seal worn out 19 Thermostatic Expansion Valve Ja Bulb loose PA b Operating erratically 20 Liquid Line Valves KMS amp SRK a Closed in freeze cycle PERE N Open in harvest cycle 21 Fan Motors Remote C Motor winding open Bearing worn out or locked rotor Defective capacitor 22 Headmaster C P R a Defective 23 VVater System a VVater leaks causing short freeze time 2 Freeze Up Defrost and clean the icemaker prior to diagnosing freeze up See VI A Cleaning and Sanitizing Instructions Fill out a freeze up checklist The freeze up checklist can be found in the Hoshizaki Technician s Pocket Guide or contact your local distributor for a copy of the freeze up checklist Freeze Up Possible Cause Harvest Cycle 1 Evaporator a Scaled up b Damaged 2 Cube Guides a b Out of position Damaged 3 Spray Tubes and or Spray a Dirty Guides b Out of position 4 Water Supply a b Lovv vvater pressure External vvater filters clogged Insufficient water line size Minimum 3 8 nom
40. liance or property IMPORTANT Indicates important information about the use and care of the appliance A WARNING This icemaker should be destined only to the use for which it has been expressly conceived Any other use should be considered improper and therefore dangerous The manufacturer cannot be held responsible for injury or damage resulting from improper incorrect and unreasonable use Failure to service and maintain the appliance in accordance with this manual will adversely affect safety performance component life and warranty coverage and may result in costly water damage To reduce the risk of death electric shock serious injury or fire follow basic precautions including the following e Only qualified service technicians should install and service this icemaker e This icemaker must be installed in accordance with applicable national state and local codes and regulations Failure to meet these code requirements could result in death electric shock serious injury fire or damage to the appliance e To reduce the risk of electric shock do not touch the control switch or service switch with damp hands e Before Servicing the KMS or SRK To reduce the risk of electric shock move the control switch to the OFF position and turn off the power supply to the SRK condensing unit Place the KMS disconnect if applicable in the OFF position Lockout Tagout to prevent the power supply from being turned back on inadverten
41. maker is serviced Make sure that none have fallen into the dispenser unit storage bin e Make sure all food zones in the icemaker and dispenser unit storage bin are clean after service For cleaning procedures see VI Cleaning and Maintenance A Service for Refrigerant Lines A WARNING e Repairs requiring the refrigeration circuit to be opened must be performed by properly trained and EPA certified service personnel e Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG DO NOT use R 404A as a mixture with pressurized air for leak testing NOTICE e Always recover the refrigerant and store it in an approved container Do not discharge the refrigerant into the atmosphere e Do not leave the system open for longer than 15 minutes when replacing or servicing parts The Polyol Ester POE oils used in R 404A applications can absorb moisture quickly Therefore it is important to prevent moisture from entering the system when replacing or servicing parts e 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 Install the new drier with the arrow on the drier in the direction of the refrigerant flow e When brazing protect the drier by using a wet cloth to prevent the dr
42. mpty Insulation Panel Float Switch M Front Panel Fig 3 Splash Curtain 48 1 Cleaning Procedure 1 Dilute 22 fl oz 650 ml of Hoshizaki Scale Away with 4 gal 15 1 of warm water 2 Remove all ice from the evaporator and the dispenser unit storage bin Note To remove cubes on the evaporator turn off the power supply and turn it back on after 3 minutes The harvest cycle starts and the cubes will be removed from the evaporator 3 Turn off the power supply 4 Remove the front panel then place the control switch in the SERVICE position Place the service switch in the DRAIN position 5 Replace the front panel in its correct position then turn on the power supply for 2 minutes 6 Turn off the power supply 7 Remove the front panel 8 In bad or severe water conditions clean the float switch as described below Otherwise continue to step 9 a Remove the right side panel b Disconnect the vent tube and the flush tube from the top of the float switch housing then remove the float switch assembly Remove the rubber boot from the bottom of the float switch assembly c Remove the retainer rod from the bottom of the float switch assembly then remove the float Be careful not to bend the retainer rod excessively when removing it d Wipe down the float switch assembly s housing shait float and retainer rod with cleaning solution Clean the inside of the rubber boot and hose with cl
43. nd and the initial harvest cycle should begin 14 Once the harvest cycle starts turn off the power supply 15 16 17 Remove the control box cover then disconnect F S connector from CB K5 black connector 18 Check for continuity across F S leads With the water tank full F S should be closed If F S is closed and the icemaker will not switch from the 1 minute fill cycle to the initial harvest cycle replace CB Remove the front panel then move the control switch to the OFF position Remove the top and right side panels 19 If open confirm that the water tank is full If the water tank is not full check the water supply water filters and fill refill water valve If the water tank is full follow the steps in IV D 2 Float Switch Cleaning After cleaning F S check it again Replace if necessary 37 20 Reconnect F S connector to CB K5 black connector then replace the control box cover right side and top panels in their correct positions 21 Move the control svvitch to the ICE position 22 Replace the front panel in its correct position 23 Turn on the povver supply to start the automatic icemaking process Legend CB control board F S float switch 2 Float Switch Cleaning Depending on local water conditions scale may build up on F S Scale can cause F S to stick In this case F S should be cleaned 1 Turn off the power supply 2 Remove the front panel 3 Place the control switch in the SERV
44. nd check X13 relay terminal 2 LBU wire to a neutral W wire for 115VAC If 115VAC is not present check X13 relay contact continuity between terminal 2 LBU wire and terminal 6 Y wire If contacts are open confirm X13 is de energized If 115VAC is present check X11 relay terminal 5 GY wire to a neutral W wire for 115VAC If 115VAC is not present check continuity between X11 relay energized terminal 3 LBU wire and terminal 5 GY wire If 115VAC is present on X11 terminal 5 GY wire check continuity on DV coil Next remove DV housing and check clean DV assembly make sure that the drain line is not clogged 7 Normal Harvest Cycle Same as the initial harvest cycle Return to step 4 Note Icemaker continues to cycle until BC is satisfied or power is switched off The icemaker always restarts at the 1 minute fill cycle Legend CB control board Comp compressor DV drain valve FMRs fan motors remote F S float switch HGVs hot gas valves HM headmaster C P R LLVs liquid line valves PM pump motor TXVs thermostatic expansion valves UF S upper float switch WV1 fill refill water valve WV2 harvest water valve X10 VVV1 and VVV2 control relay X11 drain valve harvest pump timer relay X12 drain valve lockout relay 1 X13 drain valve lockout relay 2 33 B Control Board Check Before replacing CB that does not shovv a visible defect and that you suspect is bad always conduct the following check pr
45. ocedure This procedure will help you verify your diagnosis Alarm Reset If CB is in alarm beeping press the ALARM RESET button on CB while CB is beeping WARNING Risk of electric shock Care should be taken not to touch live terminals Once reset the icemaker starts at the 1 minute fill cycle For audible alarm information see II C 2 LED Lights and Audible Alarm Safeties 1 Check the dip switch settings to assure that S4 dip switch 3 4 7 8 9 10 and S5 dip switch 1 through 5 are in the factory default position S4 dip switch 1 2 5 6 are cleaning adjustments and the settings are flexible For factory default settings see 11 C 3 a Default Dip Switch Settings 2 Move the control switch to the ICE position If the red POWER OK LED is on control voltage is good continue to step 3 If the red POWER OK LED is off check CT secondary circuit CT output is 10 5VAC at 115VAC primary input If the secondary circuit has proper voltage and the red LED is off replace CB If the secondary circuit does not have proper voltage check CT primary circuit Check for 115VAC at CB K1 connector pin 10 BR wire to a neutral W wire for 115VAC Always choose a neutral W wire to establish a good neutral connection when checking voltages For additional checks see IV F 1 No Ice Production 3 The OUTPUT TEST button provides a relay sequence test Make sure the control switch is in the ICE position then press the OUTPUT T
46. omponents fasteners and thumbscrews are securely in place after the icemaker is serviced Make sure that none have fallen into the dispenser unit storage bin 1 Turn off the power supply 2 Remove the front panel then move the control switch to the OFF position To Control Board K4 red Connector 3 Remove the top and right side panels Remove the control box cover then clear any ice away from BC ERK Ane 4 Disconnect BC connector from CB K4 250 Proximity Svvitch red connector then remove BC from the icemaker A Actuator Paddle 5 Remove the actuator paddle from the switch mount See Fig 1 6 Wipe down BC with a mixture of 1 part Hoshizaki Scale Away and 25 parts warm water Rinse the parts thoroughly with clean water 7 Reassemble BC and replace it in its correct position Note If the magnet was removed for Bin Control cleaning be sure to replace it in its Bin Control Proximity Proximity Svvitch correct position Svvitch Closed Open bin full calling for i icemaker off or 8 Reconnect BC connector to CB K4 red shutting down connector 9 Move the control switch to the ICE position 10 Replace the control box cover right side top and front panels in their correct positions Switch Mount 11 Turn on the power supply to start the automatic icemaking process Actuator Paddle Magnet 36 D Float Switch Check and Cleaning F S is used to determine that
47. oved from the bottom of the water tank and sent down the drain At the same time water flows through the small float switch tube to power flush the float switch The pump out drains the water tank for the time determined by the pump out timer The pump out timer also acts in place of the harvest timer during cycles with a pump out The pump out timer is factory set and generally no adjustment is required The pump out timer control can be set to pump out for 10 or 20 seconds S4 Dip Switch Setting Time seconds Inlet Water Valve mos f moa m E 10 EA i 10 10 N open if refill 0 closed if refill 1 or greater N 20 O on on 20 T1 Time to drain the water tank T2 Harvest timer at pump out d Pump Out Frequency Control S4 dip switch 5 6 The pump out frequency control is factory adiusted to drain the vvater tank every 10 cycles and generally no adjustment is required However where water quality is bad and the icemaker needs a more frequent pump out the pump out frequency can be adjusted as shown in the table below Timing of the first pump out is dependent on S4 dip switch 5 amp 6 settings See the table below S4 Dip Switch Setting Pump Out No 5 No6 Frequency Every cycle After 2nd freeze cycle Every 2 cycles After 3rd freeze cycle Every 5 cycles After 6th freeze cycle Every 10 cycles After 11th freeze cycle 20 e Harvest Pump Timer S4 dip switch 7 NOTICE Factory set for proper
48. owing PM to energize for the last 50 seconds of harvest NOTICE S4 dip switch 7 must remain in the factory default position of 7 on Otherwise PM will not energize during the last 50 seconds of harvest The minimum total time allowed by CB for a complete harvest cycle is 2 minutes At the end of harvest CB checks position of F S and proceeds to the freeze cycle if it is closed or calls fora 1 minute fill if it is open c Freeze Cycle LED 1 and LED 4 are on Comp FMRs and PM remain energized LLVs energize WV 1 and LED 4 energize for 1 min HGVs X10 X11 and X13 relays de energize For the first 5 minutes CB will not terminate the freeze cycle At the end of 5 minutes F S assumes control of the freeze cycle As ice builds on the evaporator the water level in the water tank lowers Freeze continues until F S opens provided the 5 minute minimum freeze timer has terminated d Pump Out Cycle LEDs 1 3 and 2 are on Comp and FMRs remain energized HGVs and X10 relay energize LLVs de energize PM stops for 2 seconds then X11 relay energizes allovving PM and DV to energize for 10 or 20 seconds S4 dip switch 3 4 Water is removed from the bottom of the vvater tank and sent dovvn the drain At the same time vvater flovvs through the small F S tube to power flush F S When the pump out timer terminates pump out is complete The 1st pump out occurs after the 11th freeze cycle then every 10th cycle thereafter The pump out frequen
49. r S4 dip switch 1 amp 2 19 c Pump Out Timer S4 dip switch 3 amp A ni ce 20 d Pump Out Frequency Control 54 dip switch 5 amp 6 20 e Harvest Pump Timer S4 dip switch 7 21 f Factory Use 54 dip switch 8 errar aia 21 g Freeze Timer S4 dip switch 9 amp 10 21 h Float Switch Selector S5 dip switch 1 55 22 i Refill Counter S5 dip Switch 2 through 5 sees ES Ee ERA iia ecc 22 Com 127 N AMD CESA 23 E OGGE MC EO aa EE OE OE anaya baa 23 a DRAIN a bab PA 23 ed es aaa RE EE ON GO EE Aa 23 WAS EE EE EE OE AWE 23 Il Technical MM AN ON rr 24 A Water Circuit and Refrigeration CCM n rin iii 24 B Wiring Diagrams ay na aaa A 25 1 KMS 1401 MLI with SEIN essens rios 25 2 KMSE 1401MLJ with SABIO csi 26 3 Wire Harness COMME CHONG sense Ee EG iadaaa REKE awak ep 27 C Peformance Dala se se see ERK RR abba 28 U K MSALA AE io SE N ia awa 28 2 KMSE i401MLJ wil SRK 14J3 29 IV Service DIS EE RE EE RE EE EE a OE GE OE EE sapak 30 A Di gnostic FTOCELU osse Me aaa A it 30 B Control Board Oo OE RE Ee AAN ala E AA EaR 34 C Bin Control Check and Cleaning coito 35 E Control CHECK AAA 35 skeer eke sie OE EE EE EE IE 36 D Float Switch Check and Cleaning RANG EERDER AE SR AE EN EE RS EED EE
50. r vacuum cleaner More frequent cleaning may be required depending on location 51 C Preparing the lcemaker for Periods of Non Use NOTICE e When storing the icemaker for an extended time or in sub freezing temperatures follow the instructions below to prevent damage e To prevent damage to the water pump do not operate the icemaker with the control switch in the SERVICE position when the water tank is empty When the icemaker is not used for two or three days under normal conditions it is sufficient to move the control switch to the OFF position When storing the icemaker for an extended time or in sub freezing temperatures follow the instructions below 1 Turn off the power supply then remove the front panel 2 Move the control switch on the control box to the OFF position Confirm that the service switch is in the CIRC position 3 Remove the front insulation front frame right side panel and control box cover 4 Disconnect the thermistor connector from the control board K3 white connector then unplug the water pump connector at the water pump 5 Wait 3 minutes then move the control switch to the ICE position Confirm that the bin control switch is closed and calling for ice The green BC CLOSED LED on the control board should be on 6 Once LED 1 and 2 on the control board energize the order of the LEDs from the outer edge of the control board is 1 4 3 2 close the inlet water supply line
51. r 5 minutes Remove the front panel 28 Replace the front panel in its correct position then turn on the power supply for 2 minutes 29 Turn off the power supply Remove the front panel 30 Repeat steps 17 through 29 three more times to rinse thoroughly Note If you do not sanitize the icemaker go to step 13 in 2 Sanitizing Procedure 2 Sanitizing Procedure Following Cleaning Procedure 1 Dilute 2 fl oz 60 ml or 4 tbs of a 5 25 sodium hypochlorite solution chlorine bleach with 4 gal 15 1 of warm water 2 Remove the front panel insulation panel and splash curtain if they are in their normal positions 3 Pour the sanitizing solution into the water tank 4 Move the service switch to the WASH position 5 Replace the splash curtain insulation panel and front panel in their correct positions 6 Turn on the power supply to start the sanitizing process 7 Turn off the power supply after 15 minutes Remove the front panel 8 Move the service switch to the DRAIN position 9 Replace the front panel in its correct position then turn on the power supply for 2 minutes 10 11 12 13 14 15 Turn off the power supply Remove the front panel Repeat steps 17 through 29 in 1 Cleaning Procedure two times to rinse thoroughly Repeat steps 1 through 11 one more time Move the control svvitch to the ICE position Replace the front panel in its correct posit
52. r the icemaker may not operate correctly The freeze timer setting determines the maximum allowed freeze time to prevent possible freeze up issues Upon termination of freeze timer the control board initiates the harvest cycle After 2 consecutive freeze timer terminations the control board shuts down the icemaker In this case see IV F 3 Low Ice Production for possible solutions The freeze timer is factory set and generally no adjustment is required Before changing this setting contact your local Hoshizaki distributor or Hoshizaki Technical Support for recommendations Dip Switch Setting Time No 10 minutes Hu h Float Svvitch Selector S5 dip svvitch 1 NOTICE Do not adjust This must be left in the factory default position or the icemaker will not operate correctly On icemakers with a double float switch the float switch selector determines which float switch upper or lower the control board monitors for refill initiation during the freeze cycle and the refill counter S5 dip switch 2 through 5 determines the number of refills The KMS 1401MLJ uses a single float switch with a double float switch upper float switch refill initiation float switch selector setting and is set for 1 refill When the freeze cycle starts the control board monitors the upper float switch If an upper float switch exists refill is initiated by an open upper float switch and is terminated by a closed upper float switch There is a ma
53. rature gt 127 53 C water entering icemaker stuck HM or shorted thermistor 2 Harvest Backup Timer Check for open thermistor HGVs not opening TXVs or harvest gt 20 min for two cycles LLVs leaking by low charge or inefficient Comp in a row switch 9 amp 10 To reset the above safeties press the ALARM RESET button with the power supply on 3 Freeze Timer Check for a F S stuck closed up WV1 or WV2 leaking freeze gt specified setting for by HGVs leaking by PM not pumping TXVs not two cycles in a row feeding properly LLVs not opening low charge HM not Timer is factory set using S4 dip bypassing or inefficient compressor Low Voltage Red LED will turn off if voltage protection operates 92Vac 5 or less The control voltage safeties automatically reset when High Voltage voltage is corrected 147Vac 5 or more Legend Comp compressor DV drain valve FMRs fan motors remote F S float switch HGVs hot gas valves HM headmaster C P R LLVs liquid line valves PM pump motor TXVs thermostatic expansion valves WV1 fill refill water valve WV2 harvest water valve 18 3 Controls and Adiustments NOTICE Dip svvitches are factory set Failure to maintain factory settings may adversely affect performance and vvarranty coverage For more information contact Hoshizaki Technical Support at 1 800 233 1940 a Default Dip Suvitch Settings The dip svvitches are factory adiusted to the
54. reezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 28 2 KMS 1401MLJ with SRK 14J3 Data Pending Note 1 Pressure data is recorded at 5 minutes into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 29 IV Service Diagnosis A WARNING e This icemaker should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire e Risk of electric shock Use extreme caution and exercise safe electrical practices e Moving parts e g fan blade can crush and cut Keep hands clear e CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after the icemaker is serviced Make sure that none have fallen into the dispenser unit storage bin e Make sure all food zones in the icemaker and dispenser unit storage bin are clean after service For cleaning procedures see VI Cleaning and Maintenance A Diagnostic Procedure The diagnostic procedure is basically a sequence check which can be used at icemaker startup or for system diagnosis This procedure allows you to diagnose electrical system and component failures Before conducting the diagnostic procedure check for correct installation proper voltage per un
55. se sandpaper to remove the coating from the brazing connections before unbrazing the components NOTICE e 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 Install the new drier with the arrow on the drier in the direction of the refrigerant flow e When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 2 Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG DO NOT use R 404A as a mixture with pressurized air for leak testing 3 Evacuation and Recharge R 404A The condensing unit is provided with refrigerant shutoff valves and the icemaker is provided with refrigerant service valves Evacuation and recharge via the condensing unit s refrigerant shutoff valves is recommended 1 Attach a vacuum pump to the system Be sure to connect the charging hoses to both high and low side refrigerant shutoff 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 45 2 Turn on the vacuum pump Open the gau
56. shut off valve and open the inlet water supply line drain valve Allow the line to drain by gravity 7 Disconnect the harvest water valve hose in the evaporator section and blow out the water line to the harvest water valve using compressed air or carbon dioxide See Fig 4 This will clear water from the harvest water valve 8 Move the control switch to the OFF position 9 Move the service switch to the WASH position and the control switch to the SERVICE position 10 Using the same hose as with the harvest water valve blow out the wash valve using compressed air or carbon dioxide 11 Move the service switch to the CIRC position and the control switch to the OFF position 12 Remove the 4 hoses connected to the water tank Allow the water tank and hoses to completely drain 13 Move the control switch to the ICE position 14 Using the fill refill water valve hose blow out the water line using compressed air or carbon dioxide This will clear water from the fill refill water valve 15 Move the control switch to the OFF position 16 Disconnect the float switch flush tube from the drain hose tee Move the service switch to the DRAIN position and the control switch to the SERVICE position 52 17 From the tee on the drain hose blovv out the drain valve using compressed air or carbon dioxide 18 Move the service svvitch to the CIRC position and the control svvitch to the OFF position 19 Turn o
57. size Minimum 3 8 nominal ID copper water tubing or equivalent d Too cold 5 Control Board a Thermistor connection loose K3 See IV B Control Board Check b Defective 6 Thermistor a Loose disconnected or defective See IV E Thermistor Check 7 Hot Gas Valves KMS amp SRK a Erratic or closed 8 Harvest Water Valve a Screen or orifice clogged 9 Compressor a Inefficient or off 10 Liquid Line Valves KMS amp SRK 11 Termostatic Expansion Valve a Defective C TXV 12 Headmaster C PR Long Freeze Cycle a Scaled up dirty 2 Float Svvitch Scaled up dirty See IV D Float Switch Check b Float sticking 77 4 Hot Gas Valves KMS amp SRK a Erratic or open 6 Control Board See IV B Control Board Check Low 8 Thermostatic Expansion Valve a Erratic or restricted 12 Headmaster CPA a Defective 1 1 43 V Replacement of Components A WARNING e This icemaker should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire e Move the control switch to the OFF position and turn off the power supply before servicing Lockout Tagout to prevent the power from being turned back on inadvertently e CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after the ice
58. ssor DV drain valve FMRs fan motors remote F S float switch HGVs hot gas valves LLVs liquid line valves PM pump motor WV1 fill refill water valve VVV2 harvest water valve 14 JoyeJodeno ay JO sasejins apisino pue apisui ay UJOG 1940 1eZiMuEs pue SALA JIJBM 18 ejN p sn si UONGO siy SAJeA ysem pue dwnd y o p liddns si 7 7577 SNA JOJEM 11484 114 LAM Jojow d lnd yyd MUS pue SIA S AHEA aul pinbil SATT aun jo Spouad papua xe Jo 1o1eiodeAa au JO aoejns episino Y Jano Jaziues pue Jaueajo alejno1l2 o pasn aq ued vorjeJado sty AjUO duind y o p llddns 51 MUS PUE SIA SONEA 986 104 5 YOUMs jeojj S 9 UEI SHINA A PA UIEIP AaA Josseidwoo dwoy MUE JOYEM au SUIBJP SIUL SALA uieip pue duind y o p llddns si Jamod Uonoun yoga JO silel p 10 M l q UO EUWUOJU OU aas HSVM PUB OHID NIVHG SUOHISON l Sey YMS ay POW BOIAJOS UI SI JOY Wadi SY PUL VONMS BY O s llddns yojims onuo ay uonisod 301 9 24 Ul ueyM uonisod 3DIAYAS 941 UI 51 YMS 0 1402 ay USYM 21 sjuauoduloy puaba7 Ho 031 N3dO og MolleA uo 4031 N3dO 99 MO A uo 431 035019 99 2 sjuauodulos V Ho 041 13SO1D Od 43919 alpped Joyenjoe 28 pasoj 28 senunyuos 4371 NAdO 28 MO
59. there is sufficient water in the water tank after the 1 minute fill cycle and after each harvest cycle F S is also used to determine that the appropriate volume of water has been converted into ice before switching out of the freeze cycle No adjustment is required 1 Float Switch Check To check F S follow the steps below 1 Turn off the power supply 2 Remove the front panel 3 Place the control switch in the SERVICE position Then place the service switch in the DRAIN position 4 Replace the front panel in its correct position then turn on the power supply for 2 minutes b 6 7 8 Turn off the power supply Remove the front panel then move the control switch to the OFF position Remove the top and right side panels SE Os OE was Remove the control box cover then disconnect F S connector from CB K5 black connector 9 Check for continuity across F S leads VVith the vvater tank empty F S should be open f open continue to step 10 If closed follow the steps in IV D 2 Float Switch Cleaning After cleaning F S check it again Replace if necessary 10 Reconnect F S connector to CB K5 black connector then replace the control box cover right side and top panels in their correct positions 11 Move the control svvitch to ICE position Replace the front panel 12 Turn on the power supply 13 As water fills the water tank F S contacts should close After 1 minute the 1 minute fill cycle should e
60. tly e Do not make any alterations to the icemaker Alterations could result in electric shock injury fire or damage to the icemaker e This appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety e Children should be properly supervised around this appliance Do not climb stand or hang on the icemaker or allow children or animals to do so Serious injury could occur or the icemaker could be damaged e Do not use combustible spray or place volatile or flammable substances near the icemaker They might catch fire e Keep the area around the icemaker clean Dirt dust or insects in the icemaker could cause harm to individuals or damage to the icemaker Ai VVARNING continued For KMS e Power supply and ground connection are supplied from the SRK remote condensing unit via the wire harness provided Do not connect the wire harness leads to an external power source e Wire harness routing conduit and disconnect if required must meet national state and local electrical code requirements Failure to meet these code requirements could result in death electric shock serious injury fire or damage to the appliance e THE ICEMAKER MUST BE GROUNDED Failure to properly ground the icemaker could res
61. to activate the service switch 2 Service Switch When the control switch is in the SERVICE position the control switch supplies power to the service switch and water pump The service switch has three positions DRAIN CIRC and WASH Note 1 When the service switch is active control switch in the SERVICE position power is supplied to the water pump in all three positions 2 When the control switch is in the OFF or ICE position the service switch is de activated In this state it can be left in any position a DRAIN This icemaker utilizes a pump out drain system When the control switch is in the SERVICE position and the service switch is placed in the DRAIN position power is supplied to the water pump and drain valve b CIRC When the service switch is active and placed in the CIRC position power is supplied to the water pump only This water pump operation is used during cleaning to circulate cleaner for extended periods of time over the outside surface of the evaporator c WASH This icemaker utilizes a solenoid operated wash bypass valve When the service switch is active and placed in the WASH position power is supplied to the pump motor and wash valve This operation is used to circulate cleaner and sanitizer over both the inside and outside of the evaporator 23 III Technical information tion C igera it and Refr A Water C sane
62. uator paddle is not sticking Clean if necessary See IV C 2 Bin Control Cleaning If BC switch still reads open replace BC 7 Press and hold the actuator paddle check for continuity across the wires of BC connector When the actuator paddle is engaged BC switch is open f closed check that the actuator paddle is not restricted Clean if necessary See IV C 2 Bin Control Cleaning If BC switch still reads closed replace BC 8 Reconnect BC connector to CB K4 red connector then move the control switch to the ICE position Turn on the power supply 9 Check that the green BC CLOSED LED on CB is on 10 Allow the icemaker to cycle on Press and hold the actuator paddle The yellow BC OPEN LED should be on and the icemaker should shut down according to the chart below If it does not replace CB Cycle at Bin Control Activation Fill Cycle 15 seconds after activation Harvest Cycle At the end of the harvest cycle or up to 15 seconds into the freeze cycle if activated at the end of the harvest cycle Freeze Cycle 15 seconds after activation if activated at least 15 seconds before the 5 minute short cycle protection timer terminates Otherwise at the end of the next harvest cycle Legend BC bin control CB control board 35 2 Bin Control Cleaning Scale may build up on BC Scale can cause the actuator paddle and magnet to stick In this case BC should be cleaned A WARNING CHOKING HAZARD Ensure all c
63. ult in death serious injury or damage to the appliance For SRK e Electrical connection must be hard wired and must meet national state and local electrical code requirements Failure to meet these code requirements could result in death electric shock serious injury fire or damage to the appliance e The remote condensing unit 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 fuses damage to existing wiring or component failure This could lead to heat generation or fire e THE REMOTE CONDENSING UNIT MUST BE GROUNDED Failure to properly ground the remote condensing unit could result in death serious injury or damage to the appliance NOTICE e Follow the instructions in this manual carefully to reduce the risk of costly water damage e n areas where water damage is a concern install in a contained area with a floor drain e Install the icemaker in a location that stays above freezing Normal operating ambient temperature must be within 45 F to 100 F 7 C to 38 C e Do not leave the icemaker on during extended periods of non use extended absences or in sub freezing temperatures To properly prepare the icemaker for these occasions follow the instructions in VI C Preparing the Icemaker for Periods of Non Use e Do not place objects on top of the icemaker
64. vver Supply a Off blovvn fuse or tripped breaker b Not vvithin specifications 2 Main Transformer a Voltage tap svvitch not set to proper voltage Wa ak 3 Phase b Coil winding open or shorted niy 3 Water Supply A b External water filters clogged 5 High Pressure Switch SRK Headmaster C P R open 6 Discharge Line Thermostat SRK Compressor or compressor components faulty Hot gas valves open 7 Wire Harness a Disconnected or loose connection From SRK to KMS 5 Fuse KMS Switch Box 9 Control Switch a In SERVICE or OFF position b Bad contacts 10 Control Transformer a Coil winding open or shorted 115VAC 10 5VAC TT Control Board See IV B Control Board Check b Yellow BC OPEN LED on bin full c Defective 12 Bin Control a Tripped vvith bin filled vvith ice See IV C Bin Control Check and b Actuator does not move freely Cleaning 13 Fill Refill or Harvest Water Valve a Screen or orifice clogged Coil winding open c Water valve open in freeze cycle 14 Float Svvitch a Float does not move freely See IV D Float Svvitch Check b Defective and Cleaning 2 1 8218 S e jejeje 40 No Ice Production Possible Cause Compressor relay magnetic contactor contacts bad or coil winding 15 Compressor a open b Start capacitor or run capacitor defective single phase only Internal protector open d Start relay contacts bad or coi
65. ximum refill time of 1 minute In a single float switch application with a double float switch setting no upper float switch exists therefore the control board reads an open upper float switch immediately when the freeze cycle starts and initiates a refill Since there is no upper float switch to close and terminate the refill the refill lasts for the maximum 1 minute During the 1 minute refill LED 4 is on Refill Initiation with S5 Dip Switch Setting Double Float Switch Single or Double Lower Float Switch Upper Float Switch i Refill Counter S5 dip switch 2 through 5 NOTICE Do not adjust These must be left in the factory default position or the icemaker will not operate correctly Float Switch Type Factory set S5 dip switch 2 through 5 allows for refills during the freeze cycle The KMS 1401MLJ is factory set for 1 refill Do not adjust S5 Dip Suvitch Setting No 3 Nod mos 9 Pers 1 Refil Note When refill set gt 0 water valve is off during pump out even if S4 dip switch 3 amp 4 are set to 3 off and 4 on See II C 3 c Pump Out Timer 54 dip switch 3 4 4 22 D Control and Service Switches 2 switches are used to control the operation of the icemaker These switches are referred to as control switch and service switch They are located on the KMS switch box 1 Control Switch The control svvitch has three positions OFF for povver off ICE for icemaking and SERVICE

Hoshizaki Condensing Unit Models SRK

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