MC16-46 - IceParts
Contents
1. PHASE INTERRUPT RELAY OPTICAL ICE LEVEL EVAPORATOR TEMP CONDENSER TEMP COMPRESSOR N 2 SOLENOID VALVE H20 N 2 DRAIN SOLEN VALVE N 2 PUMP SOLENOID VALVE GAS N 2 FAN MOTOR SENSORS CRANKASE HEATER CONNECTION REPLACES NEUTRAL FOR MODEL 220 50 60 3 Page 29 SERVICE DIAGNOSIS SYMPTOM POSSIBLE CAUSE SUGGESTED CORRECTION Unit will not run No warning LEDS glows Green LED Power ON glows Bin full LED glows Red alarm LED glows Red alarm LED blinks Freezing or Bin Full LED Red alarm LED glow Freezing or Bin Full LED Red alarm LED blink Blown power in fuse in P C Board Main switch in OFF position Inoperative P C Board Loose electrical connections Blown power out fuse in P C Board Inoperative ice level control Inoperative P C Board High head pressure High evaporating temperature after 15 mins beginning freeze Condenser sensor out of order Evaporator sensor out of order Replace fuse amp check for cause of blown fuse Turn switch to ON position Replace P C Board Check wiring Replace fuse amp check for cause of blown fuse Clean or replace ice level control Replace P C Board Dirty condenser Clean Inoperative fan motor Replace Shortage of water WC Hot gas valve leak Replace it Water inlet valve leak Replace it Short of refrigerant Compr2. Scotsman Ice Systems SERVICE MANUAL MC 16 MC 46 Electronic modular cubers TABLE OF CONTENTS Table of contents Specifications MC 16 Specifications MC 46 GENERAL INFORMATION AND INSTALLATION Introduction Unpacking and Inspection Ice maker Unpacking and Inspection Storage bin Location and levelling Stacking installation Electrical connections Water supply and drain connections Final check list Installation practice OPERATING INSTRUCTIONS Start up Operatiobnal checks OPERATING PRINCIPLES How it works Freezing cycle Harvest cycle Control sequence Component description ADJUSTMENT REMOVAL AND REPLACEMENT PROCEDURES Adjustment of the cube size Wiring diagram Service diagnosis MAINTENANCE AND CLEANING INSTRUCTIONS General Icemaker Cleaning instructions of water system Page 2 ow OO ON NNN 11 12 16 18 19 20 24 25 29 31 31 32 Page 3 SPECIFICATIONS ELECTRONIC MODULAR CUBER MODEL MC 16 Important operating requirements MIN MAX Air temperature 10 C 50 F 40 100 Water temperature 5 C 40 C 35 C 90 F Water pressure 1 bar 14 psi 5 bars 70 psi Electr voltage variations from voltage rating specified on nameplate 10 10 AIR COOLED MODELS WATER COOLED MODELS Kg Kg 100 C iso C 170 10 170 21 w 160 160 21 g 22
3. a ea Pm FAN MOTOR 5 a P nd WATER PUMP Ene 8 ELECTRONIC CARD FIG 4 WATER DRAIN VALVE EVAPORATOR 2 I5 O P CONDENSER BL nc Lu 5 2 WATER PUMP 4 9 nml Y o ELECTRONIC CARD NOTE The length ofthe entire freezing cycle is governed by the evaporator temperature sensor which has its brobe placed in contact with the evaporator serpentine Non adjustable in combination with the electronic timer Adjustable incorporated in the P C BOARD The timer adjustment is factory set in consideration of the ice maker model cooling version and ice cube size Small Medium Large It is possible however to modify the timed length of the freezing cycle by changing the DIP SWITCH keys setting In Table B of PRINCIPLE OF OPERATION are shown the various time extensions of the freezing cycle second phase in relation with the different DIP SWITCH keys settings G After about 17 20 minutes from the beginning of the freezing cycle in an hypothetic ambient temperature of 21 C the defrost cycle takes place with the hot gas and the water inlet valves being simoultaneously activated Fig 5 Page 14 The electrical components in operation are COMPRESSOR WATER PUMP WATER INLET SOLENOID VALVE HOT GAS VALVE WATER DRAIN SOLENOID VALVE S for the first 30 seconds NOTE The length
4. Page 26 WIRING DIAGRAM MC 16 A W 220 50 60 3 400 50 3 N B WHITE G GREY N BLACK A BLUE M BROWN GV YELLOW GREEN PUSH 2 SEC TO 5 SEC DURING PRINTED CIRCUIT BOARD WATER INLET FOR CLEANING PUSH 75 77 PUSH OVER 5 SEC DURING FREEZING CYCLE FOR INVERSION PUSH OVER 5 SECOND DURING WATER INLET FOR BYPASS FREEZING OPER 42 TOO HI COND EVAP TEMP t a zd Q E BIN FULL A POWER ON TERMINAL BOARD GV R 16 15 13 L3 TX MIN T3 RX M b Y Lj A vi EY x D u 9 lt ul ul GV GV Ps w gt gt gt ul a m z lt lt n d s 5 p ti 5 o a a 2 u 0 o e 2 5 2 2 m gt n ul 500 3 Sid i 5 0 SENSORS CONNECTION REPLACES NEUTRAL FOR MODEL 220 50 60 3 Page 27 WIRING DIAGRAM MC 46 A W 230 50 1 240 501 B WHITE G GREY N BLACK A BLUE M BROWN GV YELLOW GREEN PUSH 2 SEC TO 5 SEC DURING PRINTED CIRCUIT BOARD WATER INLET FOR CLEANING pysy PUSH OVER 5 SEC DURING FREEZING CYCLE FOR INVERSION PUSH OVER 5 SECOND DURING WATER INLET FOR BYPASS TERMIN
5. Contactor Coil P C B 2 221 HARVEST Water filling portion Electrical components Loads Fan Motor Air cooled only and Hot Gas Valve Water Inlet Valve Water Drain Valve P C Board Relay 1 amp 2 Coil P C Board Relay Coil Water Pump Contactor Coil P C Board Timer Electronic Controls amp Sensors Evaporator Sensor Condenser Sensor Ice Level Control ON OFF Freeze Cycle Average Discharge Pressure A C 16 18 bars 225 250 psig Average Discharge Pressure W C 17 bars 240 psig Suction Pressure End Freeze Cycle 1 6 1 7 bar 22 24 psig REFRIGERANT CHARGE R 404 A Air Cooled Water Cooled MC 16 640 gr 500 gr MC 46 1300 gr 700 gr MC 46 60 Hz 1040 gr 560 gr NOTE Before charging the refrigerant system always check the type of refrigerant and quantity as specified on the individual ice machine dataplate The refrigerant charges indicated are related to average operating conditions WARNING As R404aisabandot different types of refrigerants it is imperative to charge the system only in liquid phase in or
6. MC 46 MACHINE SPECIFICATIONS SPECIFICATIONS gje s 3 amp GAS WATER INLET WATER COOLED ONLY M4 GAS 3 4 GAS WATER OUTLET WATER COOLED ONLY 13 1600 WATER OUTLET KWD OVERFLOW DRAIN ACCESSORIES KSC 11 Cube stacking kit DIMENSIONS HEIGHT 874 mm WIDTH 1074 mm DEPTH 534 mm WEIGHT 185 Kgs Model Cond unit Finish Comp HP Water req It 24 HR MC 46 AS 6B Air Stainless steel 25 660 MC 46 WS 6B Water Stainless steel 2800 Starts Electric power cons Basic electr Amps n Watts Kwh x 24 HR N of wires Amps fuse 230 50 1 10 66 3 x 1 5 m m 20 400 50 3 5 5 14 eM i 5x15mim 10 Cubes per harvest MCL 46 144 large MCM 46 204 medium MCS 46 396 small At 15 C 60 F water temperature Page 7 GENERAL INFORMATION AND INSTALLATION A INTRODUCTION This manual provides the specifications and the step by step procedures for the installation start up and operation maintenance and cleaning for the SCOTSMAN MODULAR CUBERS The Electronic Modular Cubers are quality designed engineered and manufactured Their ice making systems are thoroughly tested providing the utmost in flexibility to fit the needs of a particular user These icemakers have been engineered to our own rigid safety and performence standards NOTE To retain the safety and performance built into this icemaker it is important that ins
7. drop by gravity onto a slanted cube chute then through a curtained opening they fall into the storage bin At the end of the defrost cycle both the hot gas andthe water inlet valves close and the machine starts again a new freezing cycle OPERATION CONTROL SEQUENCE At the start of freezing cycle the evaporator temperature sensor controls the length of the first part of the freezing cycle As it reaches a predetermined temperature it supplies a low voltage current to the P C BOARD in order to activate the electronic timer which takes over the control of the freezing cycle for a pre fixed time according to the DIP SWITCH keys setting see Tab B NOTE The evaporator temperature sensor factory pre set is the same for all the models and is not adjustable Once completed the freezing cycle 2nd phase the system goes automatically into the defrost cycle which also has a pre fixed length At completion of the defrost cycle the P C BOARD commands the unit to start again a new freezing cycle OPERATION ELECTRICAL SEQUENCE The following charts illustrate which switches and which components are ON or OFF during a particular phase of the icemaking cycle BEGINNIING FREEZE Electrical components Loads ON OFF Fan Motor Air cooled only TRIAC Hot Gas 2 2 1 Inlet Water Valve 2 P C Board R
8. accumulator used to prevent that any small amount of liquid refrigerant may reach the compressor and through the suction line In both the accumulator and the suction line itexchanges heat with the refrigerant flowing into the capillary tube warmer before to be sucked in the compressor and to be recirculated as hot compressed refrigerant gas Thefreezing cycle is controlled by the evaporator temperature sensor which has its probe in contact with the evaporator serpentine that determines the length of its first portion of the cycle When the temperature of the evaporator serpentine drops to a pre set value the evaporator sensor probe changes its electrical resistance allowing a low voltage current 12 volts to flow to the P C BOARD which in turn activates an electronic timer The timer which is built in the P C BOARD takes over from the evaporator temperature sensor the control of the freezing cycle up to its completion NOTE The change ofthe electric potential of the evaporator sensor with the consequent activation ofthe timer Time mode is signalled by the glowing up of the RED LED located beside the FREEZING yellow one in the front of the P C BOARD ATTENTION In case after 15 minutes from the beginning of the freezing cycle the temperature of the evaporator sensor probe is higher then 0 C 32 F shortage of refrigerant inoperative hot gas valve etc the P C BOARD switch OFF immediately the unit w
9. bar amp jet bearing and clean them See shortage of water Level as required Remove spray bar amp jet bearing and clean them Cubes too large Freezing cycle too long Inoperative evaporator sensor Review setting of DIP SWITCH keys Replace sensor Decreased ice capacity Inefficient compressor Leaky water valve Non condensable gas in system Poor air circulation or excessive hot location Red alarm LED glows Overcharge of refrigerant Capillary tube partially restricted Hot gas solenoid valve leaking Short of refrigerant Discharge head pressure too high Replace Repair or replace Purge the system Relocate the unit or provide for more ventilation Correct the charge Purge off slowly Blow charge add new gas amp drier after evacuating system with vacuum pump Replace valve Charge to data plate indication See incorrect discharge pressure Poor harvest Restriction in incoming water line Water inlet valve not opening Hot gas valve orifice restricted Clogged air vented holes in mold cups Discharge head pressure too low Check water valve strainer and flow control If necessary enlarge the flow control orifice Valve coil with open winding Replace valve Replace hot gas valve assy Clean out holes plugged See incorrect discharge pressure Unit won t harvest Inoperative P C Board Hot gas valve not opening Water solenoid valve not opening Replace P C Board Va
10. between the two infrared sensor of ice level control YELLOW LED blinks fast the ice machine restarts again with the extinguishing of the YELLOW LED Page 21 D P C BOARD Data processor The P C BOARD fitted in its plastic box located in the front of the unit consists of two separated printed circuits one at high and the other at low voltage integrated with two fuses one on power in 82mA and one on power out 6 3 A of four aligned LEDS monitoring the operation of the machine of one extra monitoring RED LED blink 0 C steady 15 C of one DIP SWITCH with ten keys of one push button of inputterminals for the leads of the sensor probes and input and output terminals for the leads of the ice maker electrical wires The P C BOARD is the brain of the system and it elaborates through its micro processor the signals received from the three sensors in order to control the operation of the different electrical components of the ice maker compressor water pump solenoid valves etc E PUSH BUTTON OPERATION DURING WATER FILLING PHASE Push for more then 2 but less then 5 the machine enters in Cleaning Mode Push for more then 5 the machine by pass the Water Filling Phase DURING FREEZING HARVEST CYCLE Push for more then 5 during the Freezing cycle the machine goes immediately into Harvest Push for more then 5 during the Harvest cycle the machine enters immediately in the Freez
11. harvest MCL 16 72 large MCM 16 102 medium MCS 16 198 small At 15 C 60 F water temperature Page 5 ice making capacity ICE PRODUCED PER 24 HRS SPECIFICATIONS ELECTRONIC CUBER MODEL MC 46 AIR COOLED MODELS 310 C 300 10 290 21 280 5 270 lt 260 ra 2 250 32 5 240 230 a 220 x lt 210 200 190 180 32 27 21 15 10 C WATER TEMPERATURE Important operating requirements Air temperature Water temperature 5 C 40 C 35 C 90 F Water pressure Electr voltage variations from voltage rating specified on nameplate 10 10 ICE PRODUCED PER 24 HRS Kg 310 300 290 280 270 260 250 240 230 220 210 200 190 180 MIN MAX 10 C 50 F 40 100 F 1 bar 14 psi X5 bars 70 psi WATER COOLED MODELS AMBIENT TEMPERATURE 32 27 21 15 10 C WATER TEMPERATURE NOTE The daily ice making capacity is directly related to the condenser air inlet temperature water temperature and age of the machine To keep your SCOTSMAN MODULAR CUBER at peak performance levels periodic maintenance checks must be carried out as indicated on maintenance section of this manual Production charts shown are indicating the production of MCM and MCL models For MCS models ice production is approx 10 lower Page 6 i gt 3
12. least 1 bar 14 psi 7 Have the bolts holding the compressor down been checked to ensure that the compressor is snugly fitted onto the mounting pads 8 Check all refrigerant lines and conduit lines to guard against vibrations and possible failure 9 ae the bin liner and cabinet been wiped clean 10 Has the owner user been given the User Manual and been instructed on the importance of periodic maintenance checks 11 Has the Manufacturer s registration card been filled in properly Check for correct model and serial number against the serial plate and mail the registration card to the factory 12 Has the owner been given the name and the phone numberofthe authorized SCOTSMAN Service Agency serving him G INSTALLATION PRACTICE Hand shut off valve Water filter Water supply line flexible hose 3 4 gas male fitting Power line Main switch 7 9 Drain fitting 8 10 Vented drain line 11 Open trapped vented drain 90 F WARNING This icemaker is not designed for outdoor installation and will not function in ambient temperatures below 10 C 50 F or above 40 C 100 F This icemaker will malfunction with water temperatures below 5 C 40 F or above 35 C Page 11 OPERATING INSTRUCTIONS START UP After having correctly installed the ice maker and completed the plumbing and electrical connections perform the following Start up pro cedu
13. located on the front center of P C Board of the ice level control of the secondary unit clockwise to its maximum power Only on Syen type 13 The interface P C Board is now ready to stop simultaneously the operation of the two units when the infrared beam of the ice level control is interrupted by the stored ice cubes The maximum allowable voltage variation should not exceed 10 and 10 of the data plate rating Low voltage can cause faulty functioning and may be responsible for serious damage to the overload switch and motor windings NOTE All external wiring should conform to national state and local standards and regulations ATTENTION After removal ofthe ice cubes bothunits resumetheir operation starting from the beginning of freezing cycle During the first freezing cycle it could be posible that the ice cubes produced by oneofthetwo ice makers be notof correct shape cloudy and shallow due to an insufficient water level in its sump tank This minor problem will desappear in the next batch because in the harvest cycle the sump tank will be properly filled up 14 Place again in their position the two ice chutes and finally re fit the service panels previously removed E ELECTRICAL CONNECTIONS See data plate for current requirements to determine wire size to be used for electrical connections All SCOTSMAN icemakers require a solid earth wire All SCOTSMAN ice machines are sup
14. of the defrost cycle is related to the length of the second phase of freezing cycle T2 Time to drop the evaporating temperature from 0 C 32 F small Red LED blinking to 15 C 5 F small Red LED ON steady Itis possible to extend the length of the defrost cycle by changing the setting of DIP SWITCH 7 and 8 as shown on table at page 24 H Check during the defrost cycle that the incoming water flows correctly into sump reservoir in order to refill it and that the surplus overflows through the overflow drain tube EVAPORATOR CONDENSER 5 is ELECTR TIMER zo Eis z m amp COMPRESSOR WATER DRAIN VALVE HOT GAS VALVE 9 LLL CONTACTOR COIL ELECTRONIC CARD Page 15 I Checkthe texture of ice cubes just released They have to be in the right shape with a small depression of about 5 6 mm in their crown If not wait for the completion of the second cycle before performing any adjustment If required the length of the timed freezing cycle can be modified by changing the DIP SWITCH keys setting as illustrated in OPERATING PRINCIPLE If the ice cubes are shallow and cloudy it is possible that the ice maker runs short of water during the freezing cycle second phase or the quality of the supplied water requires the use of an appropriate water filter or conditioner J be sure of the correct operation of ice level cont
15. s Limited Warranty resulting in LOSS of warranty coverage 1 Position the Bin in the selected permanent location Criteria for selection of location include a Minimum room temperature 10 C 50 F and maximum room temperature 40 C 100 F b Water inlet temperatures minimum 5 C 40 F and maximum 35 C 90 F c Well ventilated location for air cooled models d Service access adequate space mustbe left for all service connections through the rear of the ice maker A minimum clearance of 15 cm 6 must be left at the sides of the unit for routing cooling air drawn into and exhausted out of the compartment to maintain proper condensing operation of air cooled models 2 Level the Storage Bin Assy in both the left to right and front to rear directions by means of the adjustable legs 3 Inspectthe Storage Bin top mounting gasket which should be flat with no wrinkles to provide a good sealing when the Modular Cuber is installed on top of it 4 Place the Modular Cuber on top of Storage bin using care not to wrinkle or tear the gasket 5 Lifta little bit the Modular Cuber right side in order to be able to mount the ice level control bracket taking care to align the hole located on unit base to mate with the one on the top of the Bin 6 Remove the PVC plastic plug closing the round hole located on the right side of the ice chute opening 7 Trace the level control assy secured for the tran
16. 22248 150 oc 150 T 5 a n 22 E cc 140 m 140 m a 32 Q a n Qo 2 a 130 9 E a 120 99 E a 120 E 9 tu T a 110 lt lt 100 100 90 90 80 80 32 2f 21 15 10 C 32 27 21 15 10 C WATER TEMPERATURE WATER TEMPERATURE NOTE The daily ice making capacity is directly related to the condenser air inlet temperature water temperature and age of the machine To keep your SCOTSMAN MODULAR CUBER at peak performance levels periodic maintenance checks must be carried out as indicated on maintenance section of this manual Production charts shown are indicating the production of MCM and MCL models For MCS models ice production is approx 10 lower Page 4 MIN FOR UTILITY CONNECTIONS 5 a ERI SPECIFICATIONS GAS 3 4 GAS WATER OUTLET WATER COOLED ONLY 34 3 4 GAS WATER ACCESSORIES KSC 11 Cube stacking kit DIMENSIONS HEIGHT WIDTH DEPTH WEIGHT MC 16 MACHINE SPECIFICATIONS 513 mm 1074 mm 534 mm 117 Kgs Model Cond unit Finish Comp HP Water req 1 24 HR MC 16 AS 6B Air Stainless steel 15 300 MC 16 WS 6B Water Stainless steel j 1700 Starts Electric power cons Basic electr Amps Watts Kwh x 24 HR N of wires Amps fuse 230 50 1 5 5 32 3 x 1 5 m m 20 400 50 3 1230 5 1 5 10 Cubes per
17. AL BOARD FREEZING OPER TOO HI COND EVAP TEMP 4 BIN FULL E Ti POWER ON n P of T lt 42 41 1019 S 16 15 13 o gt 2 lt TX RX o lt z 2 G A g ul a e TE gt x 4 e lt bj 2 w as Z a W o 5 9 a T lt lt 4 gt L a gt g T 3 5 9 gt a d u d s 008 gt gt lt SENSORS gt a fra X a gt z a z z lt 5 z lt a o in uw z U W g S ue g 5 2 D z a z amp JUST FOR AIR COOLED UNIT USED ONLY UNIT AT 240V Page 28 WIRING DIAGRAM MC 46 A W 220 50 60 3 400 50 3 N B WHITE G GREY N BLACK A BLUE M BROWN GV YELLOW GREEN PUSH 2 SEC TO 5 SEC DURING PRINTED CIRCUIT BOARD WATER INLET FOR CLEANNG pus PUSH OVER 5 SEC DURING FREEZING CYCLE FOR INVERSION PUSH OVER 5 SECOND DURING WATER INLET FOR BYPASS FREEZING OPER 42 TOO HI COND EVAP TEMP BIN FULL TERMINAL BOARD POWER ON LED C Q Q Q t GV 16 15 CONTACTOR
18. ENT TEMPERATURE HIGHER THEN 40 C 100 F itcauses the total and immediate SHUT OFF of the machine in order to prevent the unit from operating in abnormal and dangerous conditions When the ice maker stops on account of this protective device there is a simultaneous glowing of the RED LED warning the user of the Hi Temperature situation After having efiminated the source of the condenser hi temperature to restart the machine just switching OFF and ON the unit at main line switch The ice machine resumes its normal operation by going through the 5 minutes water filling phase Page 18 At the start of the freezing cycle the refrigerant suction or lo pressure lowers rapidly to 2 5 bars 35 psig then it declines gradually in relation with the growing of the ice thickness to reach at the end of the cycle approx 1 6 1 7 bar 22 24 psig with the cubes fully formed inthe cup molds The total length of the freezing cycle ranges f rom 20 to 25 minutes DEFROST OR HARVEST CYCLE Fig D As the electronic timer has carried the system throughout the second phase of freezing cycle the defrost cycle starts ATTENTION In case the unit be able to reach 0 C 32 F evaporating temperatu re within 15 minutes but after 45 minutes from the beginning of the freezing cycle it has not yet reached the evaporator tem perature of 15 C 5 F the machine goes straight into the defrost cycle omitting the timed portion o
19. ING MODE mode for about 10 minutes then turn the main switch to OFF disconnect unit from POWER 14 Flush outthe rinsing solution from the sump reservoirs 15 Place again the evaporator cover and the unit service panels 16 Give POWER to the unit 17 At completion of the freezing and harvest cycle make sure of proper texture and clearness of the ice cubes and that they do not have any acid taste ATTENTION in case the ice cubes are cloudy white and have an acid taste melt them immediatelly by pouring on them some warm water This to prevent that somebody could use them 18 Wipe clean and rinse the inner surfaces of the storage bin REMEMBER To prevent the accumulation of undesirable bacteria it is necessary to sanitize the interior of the storage bin with an anti algae disinfectant solution every week EVAPORATOR Z BIN TEMPERATURE SENSORS COMPRESSOR WATER DRAIN VALVE HOT GAS VALVE CT Q wp 5 CONTACTOR COIL ELECTRONIC CARD Sanitation NOTE Sanitation of the water system is recommended to be done once a month Page 34 22 At completion of the freezing and harvest cycle make sure of proper texture and clearness of the ice cubes and that they do not have any acid taste 19 Prepareina plastic container the sanitation solution as per manufacturer dilution using warm water 45 50 C ATTENTION In case
20. TATION NORMAL SIZE SHAPE LITTLE OR NO ICE IN CENTER OF CUBES SZ SHALLOW SIZE THICK BULGE SOLID ICE OVER SIZE 4 Observe the ice cubes in the next two harvests and eventually repeat steps 2 and 3 above until proper ice cubes size is achieved See figure Page 25 WIRING DIAGRAM MC 16 A W 230 50 1 240 50 1 115 60 1 B WHITE G GREY N BLACK BLUE M BROWN GV YELLOW GREEN PUSH 2 SEC TO 5 SEC DURING PRINTED CIRCUIT BOARD WATER INLET FOR CLEANING PUSH PUSH OVER 5 SEC DURING FREEZING CYCLE FOR INVERSION PUSH OVER 5 SECOND DURING WATER INLET FOR BYPASS 8 FREEZING OPER EN lt 2 Gv gt Q TOO HI COND EVAP TEMP iT n BIN FULL 69 Q POWER ON V i 55 E 16 E4115 foj o 5 irs lo 5 z N N z COMPRESSOR a GV gt ia gt a GV m 7 a e z lt N I 21 a e IN lt 3 A E gt gt R S 5 d d c 2 4 lt o ul gt gt S n SENSORS i 2 2 2 25 2 lt 2 9 Q lt c n 72 e amp JUST FOR AIR COOLED UNIT USED ONLY UNIT 240V AND 15 115V
21. and that the fan blade moveS freely 8 Check that the compressor fits snugly onto all its mounting pads 9 See data plate on the rear side of the unit and check that local main voltage corresponds with the voltage specified on it CAUTION Incorrect voltage supplied to the icemaker will void your parts replacement program 10 Remove the manufacturer s registration card from the inside of the User Manual and fill in all parts including Model and Serial Number taken from the data plate Forward the completed self addressed registration card to Frimont Scotsman Europe factory Storage bin 1 Followthesteps 1 2 and 3 above to unpack the storage bin 2 Unloose the two bolts and remove the protection plate from the drain fitting 3 Carefully lay it down on its rear side and fit the four legs into their sockets 4 Remove all internal support packing and masking tape as well as the plastic ice cube deflector 5 Remove the manufacturer s registration card from the inside of the User Manual and fill in all parts including Model and Serial Number taken from the data plate Forward the completed self addressed registration card to Frimont Scotsman Europe factory C LOCATION AND LEVELLING WARNING This Ice Cuber is designed for indoor installation only Extended periods of operation at temperature exceeding the following limitations will constitute misuseundertheterms ofthe SCOTSMAN Manufacturer
22. aning solution then rinse it under a tap water stream With a pick clean the orifice of the water stream jet that propells the spray bar NOTE Cleaning requirements vary according to the local water conditions and individual user operation Continuous check of the clarity of ice cubes and visual inspection of the water spraying parts before and after cleaning will indicate frequency and procedure to be followed in local areas 5 With the ice machine and fan motor OFF on air cooled models clean condenser using vacuum cleaner whisk broom or non metallic brush taking care to do not damage both the condenser and ambient temperature sensor probes 6 Check for water leaks and tighten drain line connections Pour water down through the storage bin drain line to be sure that drain line is open and clear 7 Check size condition and texture of ice cubes Perform adjustment of DIP SWITCH keys as required 8 Check the ice level control sensor to test shut off Put some ice cubes between the light source and the receiver so to cut off the light beam for at least one minutes This should cause the ice maker to shut off and the light up of the 2nd LED yellow light IMPORTANT Perform the above check only at the end of harvest cycle or at the beginning of freezing cycle in order to do not cause to the unit to make a double freezing cycle NOTE Within few seconds after the removal of the ice cube
23. ater cooled version This valve controls the head pressure in the refrigerant system by regulating the flow of water going to the condenser As pressure increases the water regulating val ve opens to increase the flow of cooling water O CONTACTOR Placed outside of the control box it is controlled by the P C BOARD in order to close or open the electrical circuit to the compressor P WATER DRAIN SOLENOID VALVE The water drain solenoid valve electrically connected in parallel to the water inlet and to the hot gas solenoid valves is energized for all the length of the defrost cycle By means of the water pump that remains energized for 30 seconds at the beginning of the defrost cycle itallows the drain out of all remaining water rich of minerals deposited during the previous freezing cycle from the sump tank By doing so it allows to the ice maker to make every new freezing cycle with new fresh water avoiding thereby the accumulation of sediments and scales which soon or later will cause the partial or total clogging ofthe water system on the unit Page 24 ADJUSTMENT REMOVAL AND REPLACEMENT PROCEDURES A ADJUSTMENT OF THE CUBE SIZE CAUTION Before performing actual adjustment of the cube size check other possible causes for cube size problems refer to the Service Diagnosis Section for problem review and analysis Do not perform any adjustment till the icemaking system has progressed through several comp
24. bbler holes of the platen into the sump reservoir where it will be sucked by the water pump and primed to the spray system K HOT GAS SOLENOID VALVE The hot gas solenoid valve consists basically in two parts the valve body and the valve coil Located onthe hot gas line this valve is energized through the micro processor of P C BOARD during the defrost cycle and as well during the water filling phase During the defrost cycle the hot gas valve coil is activated so to attract the hot gas valve piston in order to give way to the hot gas discharged from the compressorto flow directly into the evaporator serpentine to defrost the formed ice cubes L FAN MOTOR Alir cooled version The fan motor is controlled through the P C BOARD andthe TRIAC by the condensertempe rature sensor Normally it operates only during the freezing cycle to draw cooling air through the condenser fins In the second part of the freezing cycle the fan motor can run at intermittance as the condenser pressure must be kept between two corresponding head pressure values 16 18 bars 225 250 psig M COMPRESSOR The hermetic compressor is the heart of the refrigerant system and it is used to circulate and retrieve the refrigerant throughout the entire system It compresses the low pressure refrigerant vapor causing its temperature to rise and become high pressure hot vapor which is then released through the discharge valve N WATER REGULATING VALVE W
25. control C At completion of the water filling phase 5 minutes the unit passes automatically into the EVAPORATOR BIN TEMPERATURE SENSORS COMPRESSOR WATER DRAIN VALVE ELECTRONIC CARD freezing cycle with the start up of COMPRESSOR WATER PUMP FAN in air cooled version controlled by the condensing temperature sensor located within the condenser fins Fig 2 OPERATIONAL CHECKS D f necessary install the refrigerant service gauges on both the high side and low side Schr der valves to check the compressor head and suction pressures NOTE On air cooled models the condenser temperature sensor which is located within the condenser fins keep the head condensing pressure between 16 and 18 bars 225 250 psig In the water cooled models the discharge pressure is kept constant at the value of 17 bars 240 psig by means ofa water regulating valve located on the water supply line to the condenser Page 12 Incaseofcondenser clogging such to prevent the proper flow of the cooling air or in case the fan motor is out of operation or shortage of water in the water cooled condenser the condenser temperature rises and when it reaches 70 C 160 F for air cooled version or 60 C 140 F for water cooled version the condenser temperature sensor shuts off the ice maker with the consequent light up of the RED WARNING LED Fig 3 After having diagnos
26. cycle the pump primes the 165 6307 Up to 3 9307 10 XXXX water from the sump to the spray system and 150 T 8 3 315 107 11 XXXX through the spray nozzles sprays it into the 135 8 9 315 330 11 127 XXXX inverted cup molds to be frozen into crystal clear 120 9 1030 740 440 12 1330 lt 3 ice cubes 105 1020 312 430 8 1330 15 7 4 Itis recommended that the pump motor bearings 90 12 15 gt 4 be checked at least every six months LENGTH OF TIMED PORTION OF FREEZING CYCLE ACCORDING TO THE DIP SWITCH SETTING COMBINATIONS 1 2 3 4 1 2 3 4 a ON EEEXM es n i g COG 8 mms 14 min ON 2 ON mum 2 23 9 m 9 min oF 2 Min 10 mm 7 min 4 Be 19 min 11 bs a ae ha 5 min Bo V ee amem mei e pases EMEN 1 ON 7 1 6 OF amm umm 15 min 13 Ead 1 min ON i 7 OFF mE 13 min Page 23 J WATER INLET SOLENOID VALVE 3 4 GAS MALE FITTING The water inlet solenoid valve is activated by the micro processor of the P C BOARD during the first 5 minutes of water filling phase and as well during the defrost cycle When energized it allows a metered amount of incoming water to flow overt he evaporator cavity to assist the hot gas in defrosting the ice cubes The water running over the evaporator cavity drops by gravity through the dri
27. der to avoid to alter their mix up percentage COMPONENTS DESCRIPTION A EVAPORATOR TEMPERATURE SENSOR The evaporator temperature sensor probe located in contact with the evaporator serpentine detects the dropping of the evaporator tempera ture during the freezing cycle and signals it by supplying a current flow to the micro processor of P C BOARD According to the current received the evaporator sensor supplies power to the P C BOARD first when it reachs 0 C 32 F second at 15 C 5 F inthis second case it supply power to the electronic timer built into the P C BOARD so that it may take control of the fength of the 2nd phase of freezing cycle The length of the timed phase is pre f ixed by the setting of the keys 1 2 3 and 4 of the DIP SWITCH Page 20 The activation of the electronic timer 15 C 5 F is monitored by the lighting up of the RED LED placed in the front of the P C BOARD This lighting up occures usually in the mid period of the freezing cycle and signals the switching from the first to the second phase of the freezing cycle NOTE Whenever after 15 minutes from the beginning of the freezing cycle the evaporating temperature have not yet reached the value of 0 C 32 F the P C BOARD switches OFF the machine with the BLINKING of RED LED B CONDENSER TEMPERATURE SENSOR The condenser temperature sensor probe located within the condenser fins air cooled version o
28. during the freezing cycle are COMPRESSOR FAN MOTOR in air cooled version WATER PUMP CONTACTOR COIL and during the second phase of freezing cycle Time mode they are joined by the ELECTRONIC TIMER The refrigerant head pressure in the course of the freezing cycle ranges between 18 and 16 bars 250 225 psig being controlled by the tem perature sensor probe located within the condenser fins air cooled version or on the condenser tube coil water cooled version Onthe air cooled version the condenser tempe rature sensor when senses a rising of the condenser temperature beyond the pre fixed limit changes its electrical resistance and send a low voltage power flow to the Micro Processor of P C BOARD which in turn energizes through a TRIAC the FAN MOTOR When the opposite situation occures i e the condenser temperature gets below the pre fixed limit the temperature sensor changes again its electrical resistance reducing therefore the current flow to the P C BOARD to cause the fan motor temporary cut off NOTE Onthis model the condenser sensors are used just to switch off the unit in case the condensing temperature rise up to more then 70 C for air cooled version or more then 62 C for water cooled version for one of the following abnormal reasons CLOGGED CONDENSER Air cooled version FAN MOTOR OUT OF OPERATION Air cooled version INSUFFICIENT FLOW OF COOLING WATER Water cooled version AMBI
29. ed the reason ofthe rise of temperature and removed its cause it is necessary to unplug wait few seconds and plug in again the unit thus to put the machine in condition to initiate a new freezing cycle The machine restarts with the usual 5 minutes water filling phase in order to provide enough water into the sump tank E Check to see through the ice discharge opening thatthe self propeller spray baris correctly rotating and that the water jets uniformely reach the interior of the inverted mold cups and there is not excessive water spilling through it e cc o e e cc lt m COMPRESSOR WATER DRAIN VALVE 9 0 WATER VALVE ELECTRONIC CARD Page 13 F Theicemaking processtakes placethereby with the water sprayed into the molds that gets gradually refrigerated by the heat exchange with the refrigerant flowing into the evaporator serpentine Duringthe freezing process whenthe evaporator temperature falls below an established value to the evaporator temperature sensor supplies a low voltage power signal to the electronic control device P C BOARD in order to activate an electronic timer This one takes over the control of the freezing cycle up to the complete formation of the ice cubes Fig 4 WATER DRAIN VALVE o eo a o 2
30. elay 1 Coil P C Board Relay 2 amp 3 Coil Water Pump Contactor Coil Electronic Timer Electronic Controls amp Sensors ON OFF Evaporator Sensor Condenser Sensor Ice Level Control TIMED FREEZE Electrical components Loads Fan Motor Air cooled only and TRIAC Hot Gas Valve Inlet Water Valve P C Board Relay 1 Coil P C Board Relay 2 amp 3 Coil Water Pump Contactor Coil Electronic Timer Electronic Controls amp Sensors Evaporator Sensor Condenser Sensor Ice Level Control ON OFF ON OFF HARVEST Drain portion first 30 sec Electrical components Loads Fan Motor Air cooled only and Hot Gas Valve Water Inlet Valve Water Drain Valve P C Board Relay 1 amp 2 Coil P C Board Relay Coil Water Pump
31. essor cycles intermittently Replace it Replace it Compressor cycles intermittently Low voltage Contactor with burnt contacts Non condensable gas in system Compressor starting device with loose wires Mechanical problem Check circuit for overloading Check voltage at the supply to the building If low contact the power company Replace it Purge the system Check for loose wires in starting device Replace compressor Cubes too small Freezing cycle too short Capillary tube partially restricted Moisture in the system Shortage of refrigerant Review setting of DIP SWITCH keys Blow charge add new gas amp drier after evacuating systemwithvacuum pump Same as above Check for leaks amp recharge Cloudy cubes Shortage of water Dirty water supply Accumulated impurities See remedies for shortage of water Use water softner or water filter Use SCOTSMAN Ice Machine cleaner Shortage of water Water spilling out through curtain Water solenoid valve not opening Water leak in sump area Water flow control plugged Leak of water drain valve Check or replace curtain Replace valve Locate and repair Replace water inlet valve Replace valve SERVICE DIAGNOSIS Page 30 SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Irregular cubes size amp some cloudy Some jets plugged Shortage of water Unit not level Spray bar not rotating Remove spray
32. f the freezing cycle relied to the setting of the first four DIP SWITCHES NOTE The length of the defrost cycle is related to the length of the second phase of freezing cycle T2 Time to drop the evaporating temperature from 0 C 32 F small Red LED blinking to 15 C 5 F small Red LED ON steady Itis possible to extend the length of the defrost cycle by changing the setting of DIP SWITCH 7 and 8 as shown on table at page 24 The electrical components in operation during this phase are COMPRESSOR CONTACTOR COIL WATER INLET VALVE HOT GAS VALVE WATER DRAIN VALVE and the WATER PUMP on the first 30 seconds The incoming water passing through the water inlet valve and the flow control runs over the evaporator platen and then flows by gravity through the dribbler holes down into the sump reservoir Fig D The water filling the sump reservoir forces part of the surplus water from the previous freezing cycle to go out to the waste through the overflow pipe This overflow limits the level of the sump water which will be used to produce the next batch of ice cubes Page 19 Meanwhile the refrigerant as hot gas discharged from the compressor flows through the hot gas valve directly into the evaporator serpentine by passing the condenser The hot gas circulating into the serpentine of the evaporator warms up the copper molds causing the defrost of the ice cubes The ice cubes released from the cups
33. h of the defrost cycle according to the size of the cubes Large or Medium as per the following setting ON ON PROGRAM A ON OFF PROGRAM B OFF OFF PROGRAM C OFF ON PROGRAM D LENGTH OF HARVEST CYCLE ACCORDING TO THE TIME TO DROP THE EVAP TEMPERATURE FROM 0 C TO 15 C Page 22 DIP SWITCH N 7 and 8 allow the extention of the length ofthe harvest defrost cycle according to their combination as per following chart DIP SWITCH ADDITIONAL DEFROST TIME 7 8 ON ON 0 OFF ON 30 ON OFF 60 OFF OFF 90 The 9th key is used to supply power to the water pump for the first 15 seconds of the defrost cycle position OFF or for the first 30 seconds position ON The 10th key is used to modify the CUT OUT condensing temperature from 70 C 160 F for the air cooled versions ON position to 60 C 140 F OFF position for the water cooled versions H WATER SPRAY SYSTEM Throughits nozzles the water pumped is sprayed in each individual cup to be frozen into ice It consists of one spray tube wheve are located several spray nozzles l WATER PUMP The water pump operates continually throughout the freezing cycle and on the first 15 or 30 LENGTH PROGRAMS seconds of the defrost cycle so to such the HARVEST remaining water from the sump tank reach in CYCLE A B D mineral salts and drain it out 180 Upto 6 30 Up to 9 30 XXXX During the freezing
34. help of a brush dissolve the most resistant and remote scale deposits in the platen Perform the same for all the four evaporators 6 Give power to the unit by the main switch 7 Duringthe Water Filling Phase push RESET BUTTON for more then 2 but less then 5 the machine enter in Cleaning Mode Fig 7 FREEZING CYCLE TOO HI COND TEMP TOO HI EVAP TEMP BIN FULL DIP NA ep EVAPORATOR ooo 2 CONDENSER SLC TE O cc LL s g z RX 1 ag oO sO COMPRESSOR WATER DRAIN VALVE 5 d WATER IN VALVE ELECTRONIC CARD Page 33 8 With the system in Cleaning mode the water pump is the only component in operation to circulate the cleaning solution in the entire water system 9 Letthe unit remain in the cleaning mode for about 20 minutes then turn the main switch to OFF disconnect unit from POWER 10 Flush out the cleaning solution from the sumpreservoirs then pour onto each evaporator cavity two or three liters of clean potable water with a capfull of antibacteria solution to rinse and sanitize the mold cups and the platen If necessary remove the water spry bar to clean itseparately as per steps 3 and 4 of paragraph B 11 Give power to the unit by the main switch 12 Duringthe WaterFilling Phase push RESET BUTTON for more then 2 but less then 5 the machine enter in Rinsing Mode Fig 7 13 Letthe unit remain in the RINS
35. ing cycle The length of Harvest is equal to 35 if Push Button is activated before 15 C evaporating temperature LED activation As per Harvest cycle chart if Push Button is activated after 15 C evaporating temperature LED activation Red LED inside PC Board ON steady FREEZING CYCLE TOO HI COND TEMP TOO HI EVAP TEMP BIN FULL POWER F LED MEANING GREEN LED ON Unit under power YELLOW BIN FULL LED ON Unit shut OFF at storage bin full YELLOW BIN FULL LED BLINKING SLOW Infrared beam break out YELLOW BIN FULL LED BLINKING FAST Infrared beam in again RED ALARM LED ON Too hi condensing temperature RED ALARM LED BLINKING Too hi evaporating temperature YELLOW FREEZING CYCLE ON Unit in freezing cycle mode YELLOW FREEZING OR BIN FULL AND RED ALARM LED ON Condenser sensor out of order YELLOW FREEZING OR BIN FULL AND RED ALARM LED BLINKING Evaporator sensor out of order G DIP SWITCH The P C BOARD which controls the entire operation of the ice maker has a DIP SWITCH with ten switching keys which allow to set up the micro processor program in order to extend orto shorten the length of freezing cycle in relation to the different model and versions of ice machines The DIP SWITCH first four keys setting determines the length of the 2nd phase of freezing cycle controlled by the electronic timer as detailed in the table B TheDIP SWITCH keys 5 amp 6 setting determines the lengt
36. ith the simultaneous blinking of the WARNING RED LED The length of this second portion of the freezing cycle is pre fixed and related to the setting of the first four DIP SWITCH keys The DIP SWITCH keys setting is made in consideration of the type of condenser used In Table B are indicated the various lengths of the second portion of freezing cycle Time mode in relation to the different combinations of the DIP SWITCH KEYS In Table A herebelow are illustrated the DIP SWITCH key combinations for the three different factory DIP SWITCH FACTORY SETTING COMBINATIONS PER MODEL AND VERSION FREEZING CYCLE DEFROsTCYCLE PEFR CYCLE WATER DIP SWITCH 1 2 3 4 5 6 7 8 9 10 MCS 16 46 A ON OFF ON ON ON OFF ON ON ON ON MCS 16 46 W ON OFF ON ON 0 ON ON ON OF MCM 16 W ON ON ON OFF MCM 46 1210 A ON ON ON OFF ON ON ON ON MCM 46 1210 W OFF ON ON OFF MCL 16 46 1210 A ON ON N MCL 16 46 1210 W ON ON 0 ON ON ON MCXL 46 W OFF ON ON OFF ON Page 17 EVAPORATOR INLET VALVE KALI UV Vu SPRAY BAR l lt Be NU PUMP NP OVERFLOW IW DRAIN LINE EVAPORATOR INLET VALVE EVAPORATOR gt HOT GAS CONDENSER OVERFLOW DRAIN LINE The electrical components in operation
37. lete freezing and harvest cycle to observe size and quality of ice cubes and whether or not the cube size problem exists l Ifthe cubes are shallow size Indentation is too deep probably the length of the second phase of the freezing cycle is too short so to extend such length you have to 1 Locate the DIP SWITCH on the front of the P C Board 2 Take note of thecombination of the first four DIP SWITCH KEYS and check the corrisponding length of freezing cycle 2nd phase on Table B 3 Change the same DIP SWITCH KEYS setting so thatit will correspond to the combination on table B pre ceding the one remarked at step 2 This will allow an extension of the freezing cycle of two more minutes 4 Observe the ice cubes in the next two harvests and eventually repeat steps 2 and 3 above until proper ice cubes size is achieved See figure ll Ifthe cubes are oversize size Indentation is too full probably the length of the second phase of the freezing cycle is too long To shorten such length you have to 1 Locate the DIP SWITCH on the front of the P C Board 2 Take note ofthe combination ofthe first four DIP SWITCH KEYS and checkthe corrisponding length of freezing cycle 2nd phase on Table B 3 Change the same DIP SWITCH KEYS setting so thatitwill correspond to the combination on table B coming next to the one remarked at step 2 This will reduce an the freezing cycle length of two minutes SMALL IDEN
38. lve coil with open winding Replace valve Valve coil with open winding Replace valve Incorrect discharge pressure Inoperative condenser sensor Inoperative P C Board Water regulating valve misadjusted Replace sensor Replace P C Board Adjust its setting stem Excessive water in unit base Water tubing leaking Check Tighten or replace Page 31 MAINTENANCE AND CLEANING INSTRUCTIONS A GENERAL The periods and the procedures for maintenance and cleaning are given as guides and are not to be construed as absolute or invariable Cleaning especially will vary depending upon local water and ambient conditions and the ice volume produced and each icemaker must be maintened individually in accordance with its particular location requirements B ICEMAKER The following maintenance should be scheduled at least two times per year on these icemakers 1 Checkand clean the water line strainer 2 Check that the icemaker is levelled in side to side and in front to rear directions 3 Clean the water system evaporators bin and spray bar s using a solution of SCOTSMAN Ice Machine Cleaner Refer to procedure C cleaning instructions and after cleaning will indicate frequency and proce dure to be followed in local areas 4 Reachthe water spray bar from the inside of the freezing chamber lifting it from its seat with its bottom race washer Dip it into a tray filled with cle
39. operation of the ice machine and about the cleaning and care it requires COMPRESSOR FIG EVAPORATOR 6 000 o LZ Q 2 C 5 CONDENSER 2 a LL a WATER DRAIN VALVE ELECTRONIC CARD Page 16 PRINCIPLE OF OPERATION How it works In the SCOTSMAN Modular Cubers the water used to make the ice is kept constantly in circulation by an electric water pump which primes it to the self propeller spray bar nozzles from where itis diverted into the inverted mold cups of the evaporator Fig B Asmall quantity of the sprayed water freezes into ice the rest of it cascades by gravity into the sump assembly below for recirculation FREEZING CYCLE Fig A The hot gas refrigerant discharged out from the compressor reaches the condenser where being cooled down condenses into liquid Flowing into the liquid line it passes through the drier filter then it goes all the way through the capillary tube where due to the heat exchanging action it looses some of its heat contentso that its pressure and temperature are lowered as well Next the refrigerant enters into the evaporator serpentine which has a larger D then the capillary and starts to boil off this reaction is emphasized by the heat transferred by the sprayed water The refrigerant then increases in volume and changes entirely into vapor The vapor refrigerant then passes through the suction
40. plied from the factory completely pre wired and require only electrical power connections to the wire cord provided at the rear of the unit Make sure that the ice machine is connected to its own circuit and individually fused see data plate for fuse size Check voltage on the line and the ice maker s data plate before connecting the unit E WATER SUPPLY AND DRAIN CONNECTIONS General When choosing the water supply for the ice flaker consideration should be given to a Length of run b Water clarity and purity C Adequate water supply pressure Since water is the most important single ingredient in producting ice you cannot emphasize too much the three items listed above Low water pressure below 1 bar may cause malfunction of the ice maker unit Water containing excessive minerals will tend to produce cloudy coloured ice cubes plus scale build up on parts of the water system Water supply Connectthe 3 4 GAS male fitting ofthe solenoid water inlet valve using flexible tubing or a 3 8 O D copper pipe to the cold water supply line with regular plumbing fitting and a shut off valve installed in an accessible position between the water supply line and the unit Water supply Water cooled models The water cooled versions of SCOTSMAN Ice Makers require two separate inlet water supplies one for the water sprayed for making the ice cubes and the other for the water cooled condenser Connect the 3 4 GAS male fit
41. r in contact with the tube coil water cooled version detects the condenser tempera ture variations and signals them by supplying current at low voltage to the P C BOARD In the air cooled versions in relation to the different current received the micro processor of the P C BOARD supplies through a TRIAC the power at high voltage to the fan motor so to cool the condenser and to reduce its temperature In case the condenser temperature rises and reaches 70 C 1 60 F on air cooled models or 62 C 145 F on water cooled models the current arriving to the micro processor is such to cause an immediate and total stop of the machine operation C ICE BIN LEVEL LIGHT CONTROL The electronic ice bin level control located into the storage bin has the function to stop the operation of the ice machine when the light beam between the light source and the sensor is interrupted by the ice cubes stored into the bin When the light beam is interrupted the Bin Full YELLOW LED starts to blink in case the light beam is constantly interrupted for more than 60 seconds the ice machine stops with the glowing up of the Bin Full YELLOW LED to monitor the situation of ice bin full The 60 seconds of delay prevent that an ice scoop movement or the ice dropping through the ice chute interrupting for a while the light beam can stop the operation of the unit Six seconds after the scoop out of the ice with the resumption of the light beam
42. r on top of the MC 15 45 or MC 16 46 placing the four rubber corner plates between the two machines 4 Secure them by bolts and nuts supplied with the machine 5 Remove the ice chute from both the unit and insert through the ice discharge opening of the upper unit the plastic reinforced Ice Chute Connection 6 In case of installation over MC 45 46 installthe additional ice chute connection supplied in the kit ATTENTION The PC Boards installed on the two machines as well as the interface PC Board supplied in the KSC 11 Kit must be of the same supplier Syen or Pro El Ind If not the unit with the different one remains OFF at storage bin full 7 Disconnect the ice level control terminal plug from the P C Board of the upper Modular Cuber now colled secondary 8 Secure the interface P C Board to the contactor metal bracket of the lower unit now called primary by means of the supplied plastic clamp 9 Disconnect the ice level control terminal plug from the P C Board of the primary unit and connect it to the INLET socket of the interface P C Board shorter wire 10 Connect the primary OUTLET terminal plug of the Interface P C Board wire of medium lenght to the P C Board socket of the primary unit 11 Connect the secondary OUTLET plug longer wire of the interface P C Board to the P C Board socket of the secondary unit see drawing Page 9 12 Turn the TRIMMER setting screw
43. re A Give power to the unit to start it up by switching ON the power line main disconnect switch NOTE Every time the unit returns under power after having been switched off the water inlet valve the hot gas valve and the water drain valve get energized for a period of 5 minutes thus to admit new water to the machine sump reservoir to fill it up and eventually to wash off any dirt that can have deposited in itduring the unit off period Fig 1 B During the water filling operation check to see thatthe incoming water dribbles through the evaporator platen dribbler holes down into the sump reservoir to fill it up and also that the incoming surplus of water flows out through the overflow pipe into the drain line During the water filling phase the components energized are THE WATER INLET SOLENOID VALVE THE HOT GAS SOLENOID VALVE THE WATER DRAIN SOLENOID VALVE S for the first 30 seconds NOTE f in the 5 minutes length of the water filling phase the machine sump reservoir does not get filled with water up to the rim of the overflow pipe it is advisable to check 1 The water pressure of the water supply line that must be at least 1 bar 14 psig Minimum Max 5 bar 70 psig 2 The filtering device installed in the water line that may reduce the water pressure below the Minimum value of 1 bar 14 psig 3 Any clogging situation in the water circuit like the inlet water strainer and or the flow
44. rol device place one hand between its sensing eyes to interrupt the light beam The Bin Full YELLOW LED starts to blink and after 60 seconds the unit stops with the simultaneous glowing of the same LED to moni tor the BIN FULL situation Fig 6 Take the hand out from the ice level control sensors to allow the resumption of the light beam The BIN FULL YELLOW LED blinks fast and after approximately 6 seconds the ice maker resume its operation with the immediate glowing of the FIRST YELLOW LED indicating UNIT IN OPERATION and the extinguishing of the BIN FULL YELLOW LED NOTE The ICE LEVEL CONTROL INFRARED SYSTEM is independent of the temperature however the reliability of its detection can be affected by external light radiations or by any sort of dirt and scale sediment which may deposit directly on the light source and on the receiver To prevent any possible ice maker malfunction due to negative affection of the light detertor it is advisable to locate the unit where it is not reached by any direct light beam or light radiation also itis recommended to keep the bin door constantly closed and to follow the instructions for the periodical cleaning of the light sensor elements as detailed in the MAINTENANCE AND CLEANING PROCEDURES K Remove if previously installed the refrigerant service gauges and re fit the unit service panels previously removed L Instruct the owner user on the general
45. s from the Infrared sensing light the icemaker restarts in freezing cycle The ice level control uses devices that sense light therefore they must be kept clean enough so they can see Every month clean wipe the sensing eyes with a clean soft cloth d 9 Check for refrigerant leaks C CLEANING INSTRUCTIONS OF WATER SYSTEM 1 Remove center and rightfront panels to gain access either to the control box and to the evaporator 2 end of defrost cycle then turn the unit OFF by the main switch disconnect power supply 3 Prepare for each freezing chamber the cleaning solution by diluting in a plastic container two or three liters of warm water 45 50 C with a 0 2 0 3 liters of SCOTSMAN Ice Machine Cleaner WARNING The SCOTSMAN Ice Machine Cleaner contains Phosphoric and Hydroxyacetic acids These compounds are corrosive and may cause burns if swallowed DO NOT induce vomiting Give large amounts of water or milk Call Physician immediatelly In case of external contact flush with water KEEP OUT OF THE REACH OF CHILDREN 4 Scoop out all the ice cubes stored into the bin in order to prevent them from being contaminated with the cleaning solution then flush out the water from the sump reservoir by bending down the vertical sump drain hose Page 32 5 Remove the evaporator cover then slowly pour onto the evaporator piaten the cleaning solution With the
46. sport on top of the evaporator of the Modular Cuber and direct it down through the round hole into the Storage Bin 8 Fasten the ice level control assy on its bracket by means of the two screws found in the hardware package supplied with the unit 9 Make acut shear in the PVC plastic plug that goes from its edge to the center insert the ice level control cable in the center of the plastic plug so to prevent it from any sort of contact with the unit frame then place again the PVC plug in the round hole keeping the cable exceeding portion inside the unit 10 Install the plastic ice cube deflector by hooking it on the flange of the ice chute opening in unit base see illustration 11 Secure the Modular Cuber on the top of the Storage Bin using the two bolts and diber washer found in the hardware package supplied with the unit Page 8 D ISTACKING INSTALLATION A Stacking Kit KSC 11 is available as an accessory on request to allow the installation of two Modular Cubers one on top of the other The Stacking Kit is consisting of a aplastic reinforced Ice Chute Connection b an Interface P C Board enabling to cover any stacking installation combination as a MC 16 46 on top of MC 15 45 b MC 16 46 on top of MC 16 46 1 Unloose the four screws and remove the top panel of bottom machine 2 Remove the two plastic plugs from the upper edges of the two side frames of the bottom unit 3 Install the MC 16 46 cube
47. tallation and maintenance be conducted in the manner outlined in this manual Storage Bin Since the MC series Modular Cubers do not have their own attached ice storage bins it is necessary to use an auxiliary bin such as the Bin B 350 or B 550 B UNPACKING AND INSPECTION Modular Cuber 1 Callyour authorized SCOTSMAN Distributor or Dealer for proper installation 2 Visually inspect the exterior of the packing and skid Any severe damage noted should be reported to the delivering carrier and a concealed damage claim form filled in subjet to inspection of the contents with the carrier s representative present 3 a Cutandremove the plastic strip securing the carton box to the skid b Remove the packing nails securing the carton box to the skid Cutopenthe top ofthe carton and remove the polystyre protection sheet d Pull out the polystyre posts from the corners and then remove the carton 4 Remove top and sides panels of the unit and inspect for any concealed damage Notify carrier of your claim for the concealed damage as stated in step 2 above 5 Loose two nuts on left and rights side of the unit base and remove it from the skid Save the two bolts and nuts to mount the machine on storage bin or on top of another Modular Cuber 6 Remove all internal support packing and masking tape and the hardware package 7 Check that refrigerant lines do not rub against or touch other lines or surfaces
48. the ice cubes are cloudy white and have an acid taste melt them immediately by pouring on them some warm water This to prevent that NOTE Never mix the cleaning with the sanitising solution somebody could use them 20 Followthe procedures as per cleaning from item 10 to item 13 just shorting the operation of the water pump to 10 minutes 21 Place again the evaporator cover and the unit service panels 23 Wipe clean and rinse the inner surfaces of the storage bin REMEMBER prevent the accumulation of undesirable bacteria it is necessary to sanitize every week the interior of the storage bin
49. ting of the water inlet using the flexible tubing or a 3 8 O D copper pipe to the cold water supply line with regular plumbing fitting and a shut off valve installed in an accessible position between the water supply line and the unit Water drain The recommended drain tube is a plastic or flexible tube with 18 mm 3 4 I D which runs to an open trapped and vented drain When the drain is a long run allow 3 cm pitch per meter 1 4 pitch per foot Aventatthe unit drain connectionis also required for proper sump drainage Water drain Water cooled models Connect the 3 4 GAS male fitting of the condenser water drain utilizing a second flexible tubing or a 3 8 O D copper tubing to the open trapped and vented drain NOTE The water supply and the water drain must be installed to conform with the local code In some case a licensed plumber and or a plumbing permit is required F FINAL CHECK LIST 1 Is the unit in a room where ambient temperatures are within a minimum of 10 C 50 F even in winter months 2 Is there at least a 15 cm 6 clearance around the unit for proper air circulation 3 Is the unit level IMPORTANT 4 Have all the electrical and plumbing connections been made and is the water supply shut off valve open 5 Has the voltage been tested and checked against the data plate rating Page 10 6 Has the water supply pressure been checked to ensure a water pressure of at
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