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EC-106-126-176

1. pz 103 xs 123 129 120 i 3 as 8 se m D 3 T o D gt a ene 331 ADJUSTABLE FOOT I ss CORD SET 381 scis WATER INLET 520 sess WATER INLET WATER COOLED UNIT peu 3 4645 WATER OUTLET WATER COOLED UNIT Dimensions HEIGHT without legs 930 mm HEIGHT with legs 1050 mm WIDTH 680 mm DEPTH 600 mm WEIGHT 75 Kgs EE p EC 126 CUBER machine specifications Model Cond unit Finish Comp HP poen EC 126 AS 6 Air 190 1 2 Kg EC 126 WS 6 Water Stainless steel 39 Kg 750 Start Electric power cons Basic electr Amps Amps Watts Kwh per 24 Hr Nr of wires Amps fuse 14 230 50 1 4 19 600 118 3x1 5mm 10 Cubes per harvest 48 medium A 15 water temperature Page 7 ice making capacity AIR COOLED MODELS ICE PRODUCED PER 24 HRS Kg 84 m SPECIFICATIONS ELECTRONIC CUBER MODEL EC 176 27 21 15 WATER TEMPERATURE 1 0 C AMBIENT TEMPERATURE ICE PRODUCED PER 24 HRS Important operating requirements Air temperature Water temperature Water pressure Elect
2. 9NZ3313 Q 14925 A a YOSNIS YOSNIS E dial m f 20 i vx YOSNAS t 2x i 14 31 Lj LSM ES 121 JOUVHDSIA zat lar Ldr YILYM mar qeu Ig Y N8 LS cara p a x mim 7 t tvs ea AIR COOLED MODEL Page 33 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 LIGHT glows Red alarm LED blinks Freezing LED Red alarm LED glows and Red alarm Light blinks twice and repeat Freezing LED Red alarm LED blinks 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 Inope
3. Electronic Controls amp Sensors ON Evaporator Sensor Condenser Sensor Level Control OFF OFF OFF OFF Page 25 OPERATING CHARACTERISTICS EC 106 126 176 Freeze Cycle Average Discharge Pressure A C 9 58 5 bar 130 110 psig Average Discharge Pressure 10 5 9 5 bar 150 135 psig Suction Pressure End Freeze Cycle 0 0 1 bar 0 1 psig REFRIGERANT METERING DEVICE capillary tube REFRIGERANT CHARGE R 134 A Air cooled Water cooled EC 106 320gr 11 00z 250gr 9 0 EC 126 450gr 16 00z 300 10 5 oz EC 176 450gr 16 00z 3309 12 0 oz COMPONENTS DESCRIPTION A GREEN MASTER SWITCH PUSH BUTTON Located in the front of the machine it s used to switch ON and OFF the unit by pushing its green push button When ON its green light is ON as well B RED ALARM RE SET PUSH BUTTON Located in the front of the machine just beside the Master Switch it works in conjuction with the Cleaning Remind Board and it s activated when Consensing temperature is higher then 70 air cooled version ON steady with machine in OFF mode Condensing temperature is higher then 60 water cooled version ON steady with machine in OFF mode Condenser sensor out of order Blinking twice and repeat with machine in OFF mode Condenser air filter need to be cleaned
4. 12 ON o m 777 ON i ON i 6 OF mmm 15 min 13 ON i T OFF 13 min Black socket for the Condenser Sensor and a White socket for the Red Alarm Re Set Push Button JUMPER FOR 70 OUT OR 60 IN CONDENSING TEMPERATURE CONNECTOR POWER IN amp OUT WATER LEVEL SENSOR CONDENSER SENSOR RESET BUTTON CONNECTOR TRANSFORMER DIP SWITCH FOR CLEANING REMIND SETTING The main function of this PC Board is to switch OFF the machine when the condensing tempe rature is higher of its setting value or signal out the need for the cleaning of the condenser air filter air cooled only or of the water system The time between the signal out for the cleaning ofthe water system can be modified according to the setting of the two Dip Switches as below TIME 1 2 1 MONTH ON ON 3 MONTHS OFF ON 6 MONTHS ON OFF 1 YEAR OFF OFF Once cleaned the water system it s necessary to cancel the time stored into the PC Board by pushing and hold for more then 20 the Red Alarm Re Set Button till it starts to blink M CONDENSER AIR FILTER Air cooled version Located in front of the air cooled condenser can beremoved by withdrawing itthrough the opening of the front panel for cleaning or replacing A lower plastic guide installed in
5. As soon as the water into the Sealed Water Reservoir reaches the maximum level the two metal pins close the electrical contact through the water transmitting a low voltage current to the PC Board WATER DRAIN The PC Board activates the Water Drain Pump for 8 seconds pumping out most of Page 23 A Check Valve located on the water drain hose prevents the coming back of the discharged water SCHEMATIC SYSTEM Drain fitting Vented tube Storage bin Water level sensors Drain out Overflow drain tube Storage bin drain tube Water tank inlet fitting 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 in the field Once completed the timed portion of the freezing cycle the system goes automatically into the defrost cycle which has also a pre fixed length At completion of the defrost cycle the P C BOARD command the unit to start again a new freezing cycle OPERATION ELECTRICAL SEQUENCE The
6. Condenser Sensor e Level Control Page 24 OFF OFF HARVEST Drain portion first 15 30 sec Electrical components Loads ON Fan Motor Air cooled only and TRIAC Hot Gas Valve Water Inlet Valve Water Drain P C Board Relay 1 amp 2 Coil P C Board Relay 3 Water Pump 4221 Contactor Coil EC 126 176 only Timer sinet Electronic Controls amp Sensors ON Evaporator Sensor Condenser Sensor Level Control HARVEST Water filling portion Electrical components Loads ON Fan Motor Air cooled only and TRIAC Hot Gas Valve Water Inlet Valve Water Drain P C Board Relay 1 amp 2 Coil P C Board Relay 3 Water Pump Contactor Coil 126 176 only P C Board Timer
7. 90 F Vien Page 12 OPERATING INSTRUCTIONS START UP After having correctly installed the ice maker and completed the plumbing and electrical connections perform the following Start up pro cedure A Switch ONthe powerline disconnect switch and push the green button switch Unit will start up in charging cycle mode 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 it during the unit off period Fig 1 During the water filling operation check to see that the 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 On EC 126 and EC 176 only NOTE If in the 5 minutes lenght of the water filling phase the machine sump reservoir does not get filled with water up to the rim of the overfl
8. for air cooled version or 60 140 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 as well as the Red Alarm Light ON Steady After having diagnosed the reason ofthe rise of temperature and removed its cause it is necessary to Switch OFF waitfew seconds and Switch ON 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 ELECTR TIMER eo e z ul B lt m DATA PROCESSOR COMPRESSOR WATER DRAIN VALVE 5 WATER IN VALVE ELECTRONIC CARD Page 14 BIN TEMPERATURE SENSORS COMPRESSOR EVAPORATOR CONDENSER WATER DRAIN VALVE ELECTRONIC CARD E Check to see through the ice discharge opening that the spray system is correctly seated and that the water jets uniformely reach the interior ofthe inve rted mold cups also make sure thatthe plastic curtain is hanging freely and there is not excessiv e water spilling through it BIN TEMPERATURE SENSORS COMPRESSOR EVAPORATOR CONDENSER 2 ELECTR TIMER DATA PROCESSOR FAN MOTOR WATER PUMP Do O Oo
9. gt i QNVOG GALNId GO E cs d Lear d Iz 99 3 im yoydi HOLIMS Lys T udMOd E mex qu i 52 ND OOL 50 L 2 5 6 2 23eee p gt NOIvH3dD ONZI 50 1425 BRESSRYESER S 1 4 8 4 AIR COOLED MODEL Page 32 WIRING DIAGRAM EC 126 176 AIR AND WATER COOLED 230 50 60 1 hown on freezing cycle 15 5 The uni YOSSIUdWOD YOLOW IMYA ANOD u3lvM 7 E i 2 wv 4 SAA IN Td 2 m D OD m 185 m z 2 1 2 2 z S we Ti LAM BROWN BLUE GREY BN BU GY ANIWA ADYVHOSIC YALVM INVA INVA u31vM SV9 LOH T X4 X4 DIMA CAA HM HM YOSNAS TIn4NI8 iX idol A9 A9 SN3S gt GREEN GNYE GREEN YELLOW RED GN RD YE YELLOW WHITE WH ORANGE PINK 0G PK BK BLACK 08 08 NOLLAG HSNd o 0 NOD 3i vil3dal H ODL Q
10. ON steady with machine in ON mode Water system need to be cleaned Slow blinking with machine in ON mode On the first two cases it s possible to Re Set the operation of the machine pushing and hold the Red Alarm Re Set Button by 5 till the Red Light is OFF On the third case it s necessary first to replace the condenser sensor then push and hold for 5 the Red Re Set Button C 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 is energized the small Red LED of the PC Board blink or steady When steady the micro processor supplies power to the electronic timer built into the P C BOARD sothatittakes control ofthe last portion of freezing cycle The length of the timed phase is pre fixed by the setting of the keys 1 2 3 and 4 of the DIP SWITCH 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 small Hed LED OFF the P C Board switches OFF the machine with the BLINKING of WARNING RED LED D CONDENSERTEMPERATURE SENSOR The condenser temperature sensor probe located within the condenser fins air cooled version or in contact with the tube c
11. WATER DRAIN VALVE CONTACTOR COIL 9 ELECTRONIC CARD Page 15 Theicemaking processtakes place thereby with the water sprayed into the molds that gets gradually refrigerated by the heat exchange with the refrigerant flowing into the evaporator serpentine During the freezing process when the evaporator temperature falls below an established value 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 NOTE The lenght ofthe entire freezing cycle is governed by the evaporator temperature sensor which has its probe 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 type cooling version and ice cube size Small Medium Large It is possible however to modify the timed lenght 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 setting G After about 17 20 minutes from the begin ning of the freezing cycle in an hypothetic ambient temperature of 21 C
12. the defrost cycle takes place with the hot gas the water inlet and the water drain valves simoultaneously activated Fig 5 The electrical components in operation on models are COMPRESSOR CONTACTOR COIL EC 126 176 only WATER INLET VALVE HOT GAS VALVE WATER DRAIN VALVE and the WATER PUMP on the first 15 seconds NOTE The lenght of the defrost cycle is automatically determinated by the micro processor of the P C BOARD in relation of the time necessary for the unit to reduce the evaporator temperature from 0 C 32 F small Red LED blinking to 15 C 5 F small Red LED ON steady TIME T2 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 32 H Check during the defrost cycle that the incoming water flows correctly into the sump reservoir in order to refill it and that the surplus overflows through the overflow drain tube e o e 2 e m oc 2 lt 1 m COMPRESSOR WATER DRAIN VALVE WATER IN VALVE ELECTRONIC CARD I As soon as the water into the Sealed Water Reservoir reaches the maximum level the two metal pins close the electrical contact through the water transmitting a low voltage current to the Special Interface PC Board The Interface PC Board energises the Water Drain Pump for 8 seconds pumping out most of the water contained into the
13. 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 The DIP SWITCH keys 5 amp 6 setting determines the length 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 TO 15 C DIP SWITCH 7 and 8 allow the extention ofthelength ofthe harvest defrostcycle 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 L CLEANING REMIND PC BOARD
14. Located on the front left side of the machine it works in conjuction with the condenser sensor and the Red Alarm Re Set Push Button It is used to energise the Water Drain Pump any time the level of the water into the Sealed water Reservoir reaches the upper metal pins low power electrical circuit closed through the water The water pump is kept energised by the PWD LENGTH PROGRAMS PC Board for 8 seconds HARVEST mE CYCLE A B D It consists of a Printed Circuit Board with a step 180 Upto6 30 bs Up to 9 30 XXXX down transformer 230V 12V a relay a Dip 165 6 30 7 Up to 3 9307 10 XXXX Switch with two keys a Jumper for the set up of 150 7 8 3 315 10 11 XXXX the Cut OFF Alarm condensing temperature 135 8 9 315 3390 11 17 XXXX 70 C jumper OUT for air cooled version and 1207 940 2330430 12 1330 3 60 jumper IN for water cooled version a 105 1030 12 4306 193905 3 4 green four contacts connector for power IN and 90 2 gt 15 4 OUT a Red socket for the Water Level Sensor LENGTH OF TIMED PORTION OF FREEZING CYCLE ACCORDING TO THE DIP SWITCH SETTING COMBINATIONS 1 2 3 4 1 2 3 4 1 Q DO 8 O umm C omo CIE i ON zs 2 2311 OFF pagas 9 mini ON Bz z i 3 10 r om 7 min 4 b EN mim 19 min 11 an EE 5 min Bo n o M
15. Sealed Water Reservoir J JCheckthetexture 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 Page 16 If not wait for the completion of the second cycle before performing any adjustment 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 K To be sure of the correct operation of ice level control 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 After approximately 10 seconds with the YELLOW LED blinking fast 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 EVAPORATOR BIN TEMPERATURE SENSORS COMPRESSOR DIP WATER DRAIN VALVE ELECTRONIC CARD Page 17 L Remove iffitted the refrigerant service gauges and re fit the unit service panels previously removed NOTE The ICE LEVEL CONTROL INF
16. defrost cycle as well as 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 compressor to flow directly into the evaporator serpentine to defrost the formed ice cubes R FAN MOTOR Air cooled version The fan motor is controlled through the P C BOARD and the TRIAC by the condenser tem perature 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 S 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 T HI PRESSURE CONTROL EC 106 water cooled version only Used only onthe water cooled versions it operates to keep between 9 5 and 10 5 bars 135 150 psig the hi side or discharge pressure of the refrigerant system by energizing the coil of the water inlet solenoid valve that control the cooling water flow to the condenser Page 29 U WATER REGULATING VALVE EC 126 176 Water cooled version This v
17. following charts illustrate which switches and which components are ON or OFF during a particular phase of the icemaking cycle Refer to the wiring diagram for a reference BEGINNING FREEZE Electrical components Loads ON OFF Compressor eene Fan Motor Air cooled only and TRIAC Hot Gas Valve M Water Inlet Valve Water Drain Valve P C Board Relay 1 Coil 9 P C Board Relay 2 amp 3 Coil Water Pump 2 0042 1 Contactor Coil 126 176 only P C Be Timers e Elctronic Controls amp Sensors ON OFF Evaporator Sensor M Condenser Sensor e Ice Level Control TIMED FREEZE Electrical components Loads ON Fan Motor Air cooled only and TRIAC Hot Gas Valve Water Inlet Water Drain Valve P C Board Relay 1 Coil P C Board Relay 2 amp 3 Coil Water ienie a Contactor Coil EC 126 176 only P G B TimMer oo edes Electronic Controls amp Sensors ON Evaporator Sensor
18. 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 the combination ofthe first four DIP SWITCH KEYS and checkthe corrisponding length of freezing cycle 2nd phase on Table B 3 Set the same DIP SWITCH KEYS to correspond to the prior combination shown on Table B which allow an extention of two more minutes of the length of the freezing cycle 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 of the combination ofthe first four DIP SWITCH KEYS and check the corrisponding length of freezing cycle 2nd phase on Table B 3 Set the same DIP SWITCH KEYS to correspond to the next combination shown on Table B which allow a reduction of two minutes of the length of the freezing cycle 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 S
19. pressure 1bar 5bar Electr voltage variations from voltage rating specified on nameplate 10 10 WATER COOLED MODELS 21 32 38 AMBIENT TEMPERATURE 35 32 27 21 15 10 C WATER TEMPERATURE NOTE With the unit in built in conditions the ice production is gradually reduced in respect to the levels shown in the graf up to a maximum of 10 at room temperatures higher than 32 C The daily ice making capacity is directly related to the condenser air inlet temperature water temperature conditions of the condenser air filter and age of the machine Tokeep your SCOTSMAN CUBER at peak performance levels periodic maintenance checks must be carried out as indicated on Maintenance and Cleaning section of this manual 4 SPECIFICATIONS z o 8 2 o 5 g z z CORD SET Jerg WATER INLET ADJUSTABLE FOOT Dimensions HEIGHT without legs 850 mm HEIGHT with legs 970 WIDTH 530 mm DEPTH 600 mm WEIGHT Kgs EC 106 CUBER machine specifications Model Cond unit Finish Comp HP UM EC 106 AS 6 Air 136 EC 106 WS 6 Water Stainless steel 3 8 23 Kg 550 Start Electric power cons Basic electr Amps Amps Watts Kwh per 24 Hr Nr of wires Amps fuse 10 3 230 50 1 3 3 18 550 94 3x1 5 mm 10 Cubes per harvest 32 medium A 15 water temperature
20. FF OFF OFF ON ON ECL176W OFF OFF OFF OFF ON ON ON OFF OFF Page 19 EVAPORATOR EVAPORATOR OVERFLOW DRAIN LINE INLET VALVE oo EVAPORATOR OVERFLOW DRAIN LINE Page 20 EVAPORATOR COMPRESSOR INLET VALVE Page 21 In Table B are indicatedthe various lengths ofthe timed portion of freezing cycle in relation to the different combinations ofthe DIP SWITCH KEYS In Table A herebelow are illustrated the DIP SWITCH keys combinations for the different models and versions as they are set in the factory The electrical components in operation during the freezing cycle are COMPRESSOR FAN MOTOR in air cooled version WATER PUMP CONTACTOR COIL EC 126 176 only 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 8 5 and 9 5 bars 110 130 psig in the air cooled version being controlled by the temperature sensor probe located within the condenser fins 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 trans
21. Install it again by pushing it through the front panel opening Page 37 D CLEANING SANITISING INSTRUCTIONS OF WATER SYSTEM Clean sanitise the water system evaporator bin and spray jets using a solution of SCOTSMAN Ice Machine Cleaner Sanitizer NOTE Cleaning requirements vary according to the local water conditions and individual user operation Continuous check ofthe 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 1 Remove the front and top panels to gain access either to the control box and to the evaporator 2 sure that all ice cubes have been released from their cups then switch OFF the machine at front master button switch 3 Scoop out all the ice cubes stored into the bin in order to prevent them from being contaminated with the cleaning solution 4 Remove the plastic cup located on the bottom of sump freezing chamber to drain out all water and scale deposits 5 Liftup and remove the curtain 6 Liftuptheentire spray platen from its bottom seat and take it out to clean it separately 7 Using a bottle poor fresh water into the bottom of the sump freezing chamber to clean out most of scale deposit 8 Install again the spray platen the curtain as well as the bottom plastic cup Cleaning 9 Prepare the cleaning solution by diluting in a p
22. PTICAL ICE LEVEL INLET AND PURGE CONDENSER CONTROLSENSOR TERMINAL VALVES RELAY SENSOR SOCKET SOCKET BOARD G 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 Freezing 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 159 evaporating temperature LED activation Red LED inside PC Board ON steady PUSH FREEZING CYCLE TOO HI COND TEMP TOO HI EVAP TEMP BIN FULL POWER H 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 Infrared beam break out Page 27 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 LED AND RED ALARM LED ON Condenser sensor out of order YELLOW FREEZING LED AND RED ALARM LED BLINKING Evaporator sensor out of order l
23. Page 5 ice making capacity ICE PRODUCED PER 24 HRS Kg 75 SPECIFICATIONS ELECTRONIC CUBER MODEL EC 126 AIR COOLED MODELS 10 21 32 38 32 27 21 15 WATER TEMPERATURE 10 C AMBIENT TEMPERATURE ICE PRODUCED PER 24 HRS Kg 75 Important operating requirements MIN Air temperature 10 C Water temperature 5 C Water pressure 1 bar Electr voltage variations from voltage rating specified on nameplate 10 WATER COOLED MODELS C 10 21 32 38 32 27 21 15 10 WATER TEMPERATURE AMBIENT TEMPERATURE MAX 40 35 5 bar 10 NOTE With the unit in built in conditions the ice production is gradually reduced in respect to the levels shown in the graf up to a maximum of 10 at room temperatures higher than 32 C The daily ice making capacily is directly related to the condenser air inlet temperature water temperature conditions of the condenser air filter and age of the machine To keep your SCOTSMAN CUBER at peak performance levels periodic maintenance checks must be carried out as indicated on Maintenance and Cleaning section of this manual Page 6 SPECIFICATIONS 152 600 is CEL MIN FOR UTILITY CONNECTIONS
24. RARED 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 M sediment which may deposit directly on the 3 light source on the receiver To prevent any possible ice maker malfunction due to negative affection of the light detector 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 thelight sensor elements as detailed in the MAINTENANCE AND CLEANING PRO CEDURES Its sensivity can be adjusted by turning the IR trimmer Instruct the owner user on the general operation of the ice machine and about the cleaning and care it requires Page 18 PRINCIPLE OF OPERATION How it works In the SCOTSMAN cube ice makers the water used to make the ice is kept constantly in circulation by an electric water pump which primes it to the spray system nozzles from where it is diverted into the inverted mold cups of the evaporator A small quantity of the sprayed water freezes into ice the rest of it cascades by gravity into the sump assembly below for recirculation FREEZING CYCLE 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 thro
25. SERVICE MANUAL EC 106 EC 126 EC 176 Electronic cubers with storage Ice Systems Scotsman JD INDICE Page 2 Table of contents page 2 Specifications EC 106 3 Specifications EC 126 5 Specifications EC 176 7 GENERAL INFORMATION AND INSTALLATION Introduction 9 Unpacking and Inspection 9 Location and levelling 9 Electrical connections 9 Water supply and drain connections 10 Final check list 10 Installation practice 11 OPERATING INSTRUCTIONS Start up 12 Operational checks 13 OPERATING PRINCIPLES How it works Freezing cycle 17 Harvest cycle 21 Electrical sequence 24 Components description 25 ADJUSTMENT REMOVAL AND REPLACEMENT PROCEDURES Adjustment of the cube size 30 Wiring diagram EC 106 31 Wiring diagram EC 126 EC 176 32 Service diagnosis 33 MAINTENANCE AND CLEANING INSTRUCTIONS General 36 Icemaker 36 Clean Replace of air condenser filter 36 Cleaning instructions of water system 37 Page 3 SPECIFICATIONS ELECTRONIC CUBER MODEL EC 106 AI A AIK A A ice making capacity ICE PRODUCED PER 24 HRS AIR COOLED MODELS 32 27 21 15 WATER TEMPERATURE C 10 21 AMBIENT TEMPERATURE PRODUCED PER 24 HRS Kg 51 49 47 45 43 41 39 37 Important operating requirements MIN MAX Air temperature 10 40 Water temperature 5 35 Water
26. alve 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 V CONTACTOR EC 126 176 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 Z WATER DRAIN SOLENOID VALVE EC 126 176 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 15 seconds at the beginning of the defrostcycle 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 of the water system on the unit ADJUSTMENT 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 complete freezing and harvest cycle to
27. e first 15 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 F The water filling the sump reservoirforces 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 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 drop by gravity onto a slanted cube chute then through a curtained opening they fall into the storage bin Atthe end of the defrost cycle the hot gas valve the water inlet valve and the water drain valve close and the machine starts again a newfreezing cycle Page 22 PWD SYSTEM COMPONENTS the water contained into the Sealed Water Reservoir The components of the Pump Out Water Drain System are Sealed water tank PC Board amp Sensor Sealed Water Pump Check Valve OPERATION All water coming from the overflow and from the melted ice is collected inside the Sealed Water Reservoir or
28. ecifications Model Cond unit Finish Comp HP TUM bou EC 176 AS 6 Air 150 EC 176 WS 6 Water Stainless steel 3 4 48 Kg 1050 Start Electric power cons Basic electr Amps Amps Watts Kwh per 24 Hr Nr of wires Amps fuse 15 230 50 1 5 6 26 760 135 3 1 5 mm 10 Cubes per harvest 48 medium A 15 C water temperature Page 9 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 EC series icemakers These 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 performance standards NOTE Toretain the safety and performance built into this icemaker it is important that installation and maintenance be conducted in the manner outlined in this manual B UNPACKING AND INSPECTION 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 Cutandremove the plastic strip securing the cart
29. ee figure Page 30 SMALL IDENTATION LITTLE OR NO ICE IN CENTER OF CUBES THICK BULGE SOLID ICE YOSSAYdWOD YOLOW ANIWA YOSNAS YOSNAS YOSNAS YOSNAS WIRING DIAGRAM EC 106 AIR AND WATER COOLED 230 50 60 1 The unit is shown on freezing cycle Page 31 dWAL NOD ug t zs na ls YOSNAS i T3A31 YILYM Q m IMYA INVA m S31 VA SY9 LOH NAM i 0 Xd im 221 8 E T E ISM NET gt 2 E lt m 121 Am 5 ELI X4 ed C X IAA ZAK lm 0 3 145 5 E j ig 9 5 3ouvHosia 5 YILYM dnd zi E i e H z a v j wt 4 x _ 0 0907000 bs win fo 8o g 83804 M r
30. gerant suction or lo pressure lowers rapidly to 1 bar 14 psig then it declines gradually in relation with the growing of the ice thickness to reach at the end of the cycle approx 0 0 1 bar 0 0 3 psig with the cubes fully formed in the cup molds The total length of the freezing cycle ranges from 20 to 25 minutes DEFROST OR HARVEST CYCLE Fig E and G As the electronic timer has carried the system throughout the second phase of freezing cycle the defrost cycle starts ATTENTION In case the unit is able to reach 0 C 32 F evaporating temperature 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 of 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 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 32 The electrical components in operation during this phase are COMPRESSOR CONTACTOR COIL EC 126 176 only WATER INLET VALVE HOT GAS VALVE WATER DRAIN VALVE and the WATER PUMP on th
31. l ofthe freezing cycle upto its completion NOTE The change of the electric potential of the evaporator sensor with the consequent activationofthe timer Time mode is signalled by the glowing up of the RED LED located 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 small Red LED still OFF shortage of refrigerant inoperative hot gas valve etc the P C BOARD switch OFF immediately the unit with the simultaneous blinking of the WARNING RED LED The length of this timed 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 and size of ice cubes DIP SWITCH FACTORY SETTING COMBINATIONS PER MODEL AND VERSION FREEZING CYCLE DEFROST CYCLE AIR WATER DIPSWITCH 1 2 3 4 5 6 7 8 9 10 ECM 106 A ON ON OFF ON ON OFF ON ON OFF ON ECM106W ON ON OFF ON ON OFF ON ON OFF ECL 106 A OFF OFF OFF ON OFF ON ON OFF ON ECL106W OFF OFF OFF OFF ON ON ON OFF 126 ON ON OFF ON ON OFF ON ON OFF ON ECM126W ON ON OFF ON OFF ON ON ON OFF OFF ECL 126 A ON ON OFF ON ECL 126 W ON ON OFF OFF ECM 176A ON ON OFF ON ON ECM176W ON ON OFF ON OFF ECL 176 A O
32. l sensor to test shut off Put your hand between the light source andthe receiver so to cut offthe 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 NOTE Within few seconds after the removal of the hand 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 6 Check for refrigerant leaks C CLEAN REPLACE OF AIR CONDENSER FILTER NOTE The new AC series in the air cooled version are standard equipped with an air condenser filter as well as a Cleaning Reminder Board to remind to the end user the need for the cleaning of the air filter or of the water system Red Alarm Light ON Steady or Blinking rispectively with machine in operation 1 Withdraw the air filter from the front through the opening of the front panel LL 2 Blowpressurised air on the opposite direction of the condenser air flow so to remove the dust accumulated 3 If pressurised air is not available use tap water always in the counter flow air diretcion Once cleaned shake it so to remove most of the accumulated water then dry it using an hair dryer NOTE Incase the air filter straineris damaged replace it with a new one 4
33. lastic container two liters of warm water 45 50 with 0 2 liters of 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 indu ce vomiting Give large amounts of water or milk Call Physician immediately In case of external contact flush with water KEEP OUT OF THE REACH OF CHILDREN 10 Remove the evaporator cover then slowly pour onto the evaporator platen the cleaning solution With the help of a brush dissolve the most resistant and remote scale deposits in the platen 11 Switch ON againthe machine atfront master button switch then push the PC BOARD PUSH BUTTON for more then 2 andless of 5 to putthe machine in cleaning mode NOTE With the system in CLEANING RINSING mode the water pump is the only component in operation to circulate the cleaning solution in the entire water system 12 Let the unit to remain in the CLEANING modefor about 20 minutes then unplug again the machine NOTE amount of Cleaner and the time needed for the cleaning of water system depends of the water conditions 18 Switch OFF theice maker at master button switch then flush out the cleaning solution from the sump reservoir by taking off the sump plastic cup Once flushed out install again the sump plastic cup 14 Pour onto the evaporator cavity two or three liters
34. let valve Replace valve Irregular cubes size amp some cloudy Some jets plugged Shortage of water Unit not level Remove jet cover and clean See shortage of water Level as required Cubes too large Freezing cycle too long Review setting of DIP SWITCH keys 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 Page 35 SERVICE DIAGNOSIS SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Unit won t har
35. ltage 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 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 cuber consideration should be given to Length of run b Water clarity and purity C Adequate water supply pressure Since wateris 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 Air Cooled Versions Connect the 3 4 male fitting of the solenoid water inlet valve using the flexible tube supplied tothe 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 If water contains a high level of impurities it is advisable to consider the use an appropriate water filter or conditioner EC 106 Water Cooled Version On Water Cooled version the water inlet solenoid valve has two separate outlets one for the condenser and the second for the p
36. mits 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 case the condenser temperature probe senses that the condenser temperatu re has rised to 70 C 160 F on air cooled versions or 60 C 140 F on water cooled versions for one of the following reasons CLOGGED CONDENSER Air cooled version INSUFFICIENT FLOW OF COOLING WATER Water cooled version FAN MOTOR OUT OF OPERATION Air cooled version AMBIENT TEMPERATURE HIGHER THEN 40 100 F it causes 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 and RED LIGHT STEADY warning the user of the Hi Tem perature situation After having eliminated the source of the condenser hi temperature to restart the machine it is necessary to switch OFF wait few seconds and switch ON again the unit Theice machine resumes its normal operation by going through the 5 minutes water filling phase At the start of the freezing cycle the refri
37. ng the following limitations will constitute misuse under the terms of the SCOTSMAN Manufacturer s Limited Warranty resulting in LOSS of warranty coverage 1 Position the unit 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 must be leftfor 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 unit in both the left to right and front to rear directions D 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 supplied from the factory completely pre wired and require only electrical power connections to the wire cord provided at 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 Themaximum allowable voltage variation should not exceed 10 and 1095 of the data plate rating Low vo
38. of clean potable water to rinse the mold cups and the platen 15 Switch ON again the machine The water pump is again in operation to circulate the water in order to rinse the entire water system Do the operation as per steps 13 and 14 twice so to be sure no more traces of descaling solution remains into the sump Page 38 Sanitation NOTE Sanitation of the water system is recommended to be done once a month 16 Prepare in aplastic container the sanitation solution as per manufacturer dilution using warm water 45 50 C NOTE Never mix the cleaning with the sanitising solution 17 Followthe procedures as per cleaning from item 10 to item 13 just shorting the operation of the water pump to 10 minutes 18 Place again the evaporator cover and the unit service panels 19 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 immediately by pouring on them some warm water This to prevent that somebody could use them 20 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
39. oil water cooled version detects the condenser tempe rature variations and signalsthem 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 70 160 F on air cooled models or 60 140 F on water cooled models the current arriving to the micro processor is such to cause animmediate and total stop ofthe machine operation E ICE BIN LEVEL LIGHT CONTROL The electronic ice bin level control located into the storage bin has the function to stop the operation ofthe ice machine whenthe lightbeam 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 between the two infrared sens
40. on box to the skid b Cutopen the top of the carton and remove the polystyre protection sheet c Pull out the polystyre posts from the corners and then remove the carton 4 Remove the front panel of the unit and inspect for any concealed damage Notify carrier of your claim for the concealed damage as steted in step 2 above 5 Check that refrigerant lines do not rub against or touch other lines or surfaces and that the fan blade moves freely 6 Check that the compressor fits snugly onto all its mounting pads 7 Remove all internal support packing and masking tape 8 Use clean damp cloth to wipe the surfaces inside the storage bin and the outside of the cabinet 9 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 manufacturers 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 factory 11 If necessary replace the four standard legs with the taller ones supplied in the machine and adjust them to level the unit C LOCATION AND LEVELLING WARNING This Ice Cuber is designed for indoor installation only Extended periods of operation at temperatures exceedi
41. or of ice level control the ice machine restarts again with the extinguishing of the YELLOW LED F 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 Page 26 printed circuits one at high and the other at low voltage integrated with two fuses one on power in 32mA 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 steady 15 of one DIP SWITCH with ten keys of one push button of input terminals for the leads of the sensor probes and input and output terminals for the leads ofthe 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 ofthe ice maker compressor water pump solenoid valves etc 0 C BLINKING RESET PUSH BUTTON TRIAC MICROPROCESSOR BS EPROM FUSE FREEZING 9 TRANSFORMER ALARM 4 WATER PUMP RELAY BIN FULL COMPRESSOR POWER i RELAY FUSE ADJUSTER i RESISTANCE EVAPORATOR VARISTOR SENSOR SOCKET HOT GAS WATER O
42. ow pipe it is advisable to check 1 The water pressure of the water supply line thatmustbeatleast 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 control BIN TEMPERATURE SENSORS COMPRESSOR WATER DRAIN VALVE ELECTRONIC CARD Page 13 C At completion of the water filling phase 5 minutes the unit passes automatically into the freezing cycle with the start up of COMPRESSOR CONTACTOR COIL EC 126 176 only WATER PUMP FAN MOTOR in air cooled version controlled by the condensing temperature sensor located within the condenser fins Fig 2 OPERATIONAL CHECKS D Install if required the refrigerant service gauges on both the high side and low side Scraeder 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 8 5 and 9 5 bar 110 130 psig In case of air condenser filter clogged 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
43. r voltage variations from voltage rating specified on nameplate Kg 86 MIN 1 1 0 C 5 C bar 10 WATER TEMPERATURE WATER COOLED MODELS AMBIENT TEMPERATURE MAX 40 C 35 C 5 bar 10 NOTE With the unit in built in conditions the ice production is gradually reduced in respect to the levels shown in the graf up to a maximum of 10 at room temperatures higher than 32 The daily ice making capacity is directly related to the condenser air inlet temperature water temperature conditions of the condenser air filter and age of the machine To keep your SCOTSMAN CUBER at peak performance levels periodic maintenance checks must be carried out as indicated on Maintenance and Cleaning section of this manual Page 8 SPECIFICATIONS E tars 00 OVERFLOW DRAIN Dimensions HEIGHT without legs 1000 mm HEIGHT with legs 1120 mm WIDTH 680 mm DEPTH 600 mm Eu WEIGHT 80 Kgs EE EC 176 CUBER machine sp
44. rative fan motor Replace Shortage of water WC Hot gas valve leak Replace it Water inlet valve leak Replace it Short of refrigerant Compressor cycles intermittently Replace it Replace it Compressor cycles intermittently Low voltage Contactor with burnt contacts EC 126 176 only 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 SERVICE DIAGNOSIS Page 34 SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION 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 in
45. roduction of ice EC 126 176 Water Cooled Versions The water cooled versions of SCOTSMAN Ice Makers require two separate inlet water supplies one for water sprayed for making the ice cubes and the other for the water cooled condenser Connect the 3 4 male fitting of the water inlet Page 10 using the flexible tube supplied to the cold water supply line with regular plimbing 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 WATER DRAIN WATER COOLED MODELS Connect the 3 4 male fitting of the condenser water drain utilizing a second flexible hose to the open trapped and vented drain NOTE 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 The EC series Ice Cubers can pump out water up to 1 5 m rise HAND DISCONNECT SWITCH WATER DRAIN WATER DRAIN F FINAL CHECK LIST 1 Is the unit in a room where ambient temperatures are within a minimum of 10 50 even in winter months 2 Is there at least a 15 cm 6 clearance around the unit for proper air circulation Page 11 3 15 the unit level IMPORTANT 4 Have all the electrical and plumbing connections been made and is
46. side the unit is used for the correct sliding and location of the air filter N 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 O WATER PUMP The water pump operates continually throughout the freezing cycle and on the first 15 or 30 seconds of the defrost cycle so to such the remaining water from the sump tank reach in mineral salts and drainitout Duringthe freezing Page 28 cycle the pump primes the water from the sump tothe spray system andthrough the spray nozzles sprays it into the inverted cup molds to be frozen into crystal clear ice cubes Itis recommended that the pump motor bearings be checked at least every six months P WATER INLET SOLENOID VALVE 3 4 MALE FITTING EC 106 water cooled version only A special water inlet solenoid valve with one inlet and two outles one for condenser and the second for the production of ice is used on water cooled version An automatic hi pressure control activates the second coil of the water inlet solenoid valve so to supply a metered amount of water to the condenser and drop down its temperature and pressure Q HOT GAS SOLENOID VALVE The hot gas solenoid valve consists basically in two parts the valve body and the valve coil Located onthe hotgas line this valve is energized through the micro processor of P C BOARD during the
47. the water supply shut off valve open 5 Hasthevoltagebeentested and checked against the data plate rating 6 Has the water supply pressure been checked to ensure a water pressure of at least 1 bar 14 psi 7 Check all refrigerant lines and conduit lines to guard against vibrations and possible failure G 8 Have the bolts holding the compressor down been checked to ensure that the compressor is snugly fitted onto the mounting pads 9 Have 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 andthe phone number of the authorized SCOTSMAN Service Agency serving him INSTALLATION PRACTICE ANY Ai AA A A CN Hand shut off valve Water filter Water supply line flexible hose 3 4 male fitting Vented drain Open trapped vented drain Drain fitting Main switch Power line n 9 c s WARNING This icemaker is not designed for outdoor installation and will not function in ambient temperatures below 10 50 or above 40 100 This icemaker will malfunction with water temperatures below 5 C 40 F or above 35
48. ugh the drier filter then it goes all the way through the capillary tube where due to the heat exchanging action it loses some of its heat content so that its and temperature are lowered as well Next the refrigerant enters into the evaporator serpentine which has a larger 1 0 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 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 The freezing 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 small Red LED ON steady the evaporator sensor probe changes its electrical resistance allowing a low voltage current 15 volts toflow tothe 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 contro
49. vest Inoperative P C Board Hot gas valve not opening Water solenoid valve not opening Replace P C Board Valve 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 EC 126 176 only Replace sensor Replace P C Board Adjust its setting stem Excessive water in unit base Water tubing leaking Check Tighten or replace Page 36 MAINTENANCE AND CLEANING INSTRUCTIONS A GENERAL The periods andthe 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 Thefollowing maintenance should be scheduled at least two times per year on these icemakers 1 Check clean the water line strainer 2 Checkthat the icemaker is levelled in side to side and in front to rear directions 3 Check for water leaks and tighten drain line connections Pour water down bin drain line to be sure that drain line is open and clear 4 Check size condition and texture of ice cubes Perform adjustment of cube size control as required 5 Check the ice level contro

EC-106-126-176

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