User Manual - Coast Distributors
Contents
1. zt Z Z gt E 84 E N 2 m e m gt S9 i 2 lt 65 2 3 4 3 4 GAS WATER OUTLET WATER COOLED ONLY i gt 3 4 GAS 152 521 A 5 3 4 5 WATER INLET WATER COOLED ONLY 5 63 64 20 33 64 2 3 O O ll EN 563 4 m mm IA GIN 675 26 37 64 FRONT VIEW HEIGHT without legs 900 mm 55 HEIGHT with legs 1020 mm WIDTH 675 mm DEPTH 520 mm WEIGHT 75 Kgs ICEU175 CUBER machine specifications M Ice bin cap Water requirem ICEU175 S Steel Electr power cons Basic electr Amps Start Amps Watts Kwh per 24 Hrs No of Wires Amp Fuse Cubes per harvest 48 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 ICE O MATIC ICEU125 175 icemakers The Electronic 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 installation2. P C Board Relay 2 amp 3 Coil Contactor OESTE Electronic Controls amp Sensors Evaporator Sensor Condenser Sensor Ice Level Gollttol enu om OFF OFF HARVEST Drain portion first 15 30 sec Electrical components Loads ON COMDES O i e testet Fan Motor Air cooled only and TRIAC Hot Gas VaVe Water Inlet Valve Water Drain valve P C Board Relay 1 amp 2 Coil P C Board Relay 3 Coil Water B TIME Soie Electronic Controls amp Sensors ON Evaporator Sensor Condenser Sensor Ice Level Control HARVEST Water filling portion Electrical components Loads ON COLNIDIOSSOP caesa Fan Motor Air cooled only and TRIAC FIO GAS VAIN Cesc Water Inlet Valve Water Drain valve P C Board Relay 1 amp 2 Coil P
3. FAN MOTOR TRIAC lt rum amm WATER PUMP mI ELECTRONIC CARD Page 15 PRINCIPLE OF OPERATION How it works In the ICE O MATIC 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 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 content so that its pressure 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 flowin
4. oc e 2 TY N oc lt TY DATA PROCESSOR COMPRESSOR ELECTRONIC CARD Page 12 INE WATER DRAIN VALVE EVAPORATOR ole Q WATER IN VALVE CONDENSER MEE LLI cc ELECTR HOT GAS VALVE lt TIMER NO ul tr LLI lt o zT CONTACTOR COIL o gt Rx Tx QE 20 FAN MOTOR TRIAC CA SL OP 2 2 RELAY WATER PUMP fe 17 2 wv Imam rur Sj ELECTRONIC CARD E Check to see through the ice discharge interior ofthe inverted mold cups also make sure opening that the spray system is correctly seated that the plastic curtain is hanging freely and there and that the water jets uniformly reach the is not excessive water spilling through it WATER DRAIN VALVE EVAPORATOR qup Gu ETT 77 29 CONDENSER Sos as v e O CONTACTOR COIL BIN TEMPERATURE SENSORS DATA PROCESSOR FAN MOTOR WATER PUMP O COMPRESSOR ELECTRONIC CARD Page 13 F Theicemaking process takes 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 electron
5. C Board Relay Coil Waler edem te COMACION oll us e P C Board Timer 2 Electronic Controls amp Sensors ON Evaporator Sensor Condenser Ice Level Control OFF OFF OFF OFF OPERATING CHARACTERISTICS ICEU 125 175 Freeze Cycle Average Discharge Pressure A C 9 5 8 5 bar 130 110 psig Average Discharge Pressure W C 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 ICEU 125 175 450 gr 16 0 oz 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 currentflow 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 so that it takes control of the 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
6. 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 observe size and quality of ice cubes and whether or not the cube size problem exists SMALL IDENTATION I 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 note of the combination of the 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 LITTLE NO correspond to the prior combination shown on ICE CENTER N Table B which allow an extention of two more OF CUBES 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 THICK BULGE P C Board SOLID ICE 2 Take note of the combina
7. SWITCH Page 20 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 Red LED OFF the P C Board switches OFF the machine with the BLINKING of WARNING RED LED B CONDENSER TEMPERATURE SENSOR The condenser temperature sensor probe located within the condenser fins air cooled version or in contact with the tube coil water cooled version detects the condenser tempe rature 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 160 F current arriving to the micro processor is such to cause animmediate 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 u
8. 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 factory 11 If necessary fit the four legs into their seats on the machine base and adjust them to the desired level C LOCATION AND LEVELLING WARNING This Ice Cuber is designed for indoor installation only Extended periods of operation at temperatures exceeding the following limitations will constitute misuse under the terms of the ICE O MATIC 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 50 and maximum room temperature 40 100 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 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 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 connec
9. ct 32 27 21 15 10 C WATER TEMPERATURE 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 and age of the machine To keep your Ice O Matic CUBER at peak performance levels periodic maintenance checks must be carried out as indicated on maintenance section of this manual Page 4 SPECIFICATIONS CONT D 427 16 13 16 7 Y Z i 5 E 5 T 2 RIS ON z 3 4 i 3 4 GAS WATER OUTLET WATER COOLED ONLY 398 70 3 3 4 152 521 3 4 WATER INLET WATER COOLED ONLY 5 63 64 20 33 64 Uo 2 S E 563 4 675 26 37 64 FRONT VIEW HEIGHT without legs 900 mm HEIGHT with legs 1020 mm WIDTH 675 mm DEPTH 520 mm WEIGHT 75 Kgs ICEU125 CUBER machine specifications Ice bin cap Water requirem ICEU125 S Steel Electr power cons Basic elect electr otart start Amps Watts Kwh per 24 Hrs No of Amp Fuse Fuse Cubes per harvest
10. 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 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 Compres SON tiu tacet indes sedet ade x Fan Motor Air cooled only and TRIAC Hot Gas Valve ice poete i qase Water Inlet x Water Drain Valve P C Board Relay 1 Coil P C Board Relay 2 amp 3 Coil Water Contactor COM eaea x POB TINE Sese Elctronic Controls amp Sensors ON Evaporator Sensor Condenser e Ice Level Control TIMED FREEZE Electrical components Loads ON COMDIESS Ol etiaro actui bee Putus Fan Motor Air cooled only and TRIAC Hot Gas ValV6 oae ie etse eee Water Inlet Valve Water Drain Valve P C Board Relay 1 Coil
11. seconds the ice maker resumes 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 5 196 CONDENSER MEN 721 0 ELECTR oS BIN TEMPERATURE SENSORS DATA PROCESSOR COMPRESSOR b OOO Page 14 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 detector it is advisable to locate the unit where it is not reached by any direct light beam or light radiation also it is 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 PRO CEDURES Its sensivity can be adjusted by turning the IR trimmer Remove if fitted the refrigerant service gauges and re fit the unit service panels previously removed L Instruct the owner user on the general operation of the ice machine and about the cleaning and care it requires WATER DRAIN VALVE mer WATER IN VALVE west HOT GAS VALVE aL m eye dis COIL 4E ans
12. 48 Page 5 SPECIFICATIONS ELECTRONIC CUBER MODEL ICEU175 Important operating requirements MIN MAX Air temperature 10 C 50 F 40 C 100 F Water temperature 5 C 40 F 40 C 100 F Water pressure 1 bar 14 psi 5 bar 70 psi Electr voltage variations from voltage rating specified on nameplate 10 10 AIR COOLED MODELS WATER COOLED MODELS Kg C 95 92 5 10 g g 2 I D I 87 5 21 Gi lt cc cc Lu uj 825 32 a Q 80 E E 77 5 D 38 ea Z Q 75 2 T a T 72 5 m m T Hon 2 7 675 65 32 27 21 15 10 C WATER TEMPERATURE 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 The daily ice making capacity is directly related to the condenser air inlet temperature water temperature and aae of the machine To keep your Ice O Matic CUBER at peak performance levels periodic maintenance checks must be carried out as indicated on maintenance section of this manual Page 6 SPECIFICATIONS CONT D 427 16 13 16
13. Inoperative P C Board Replace P C Board Loose electrical connections Check wiring Green LED Power ON glows Blown power out fuse in P C Board Replace fuse amp check for cause of blown fuse Bin full LED glows Inoperative ice level control Clean or replace ice level control Inoperative P C Board Replace P C Board Red alarm LED glows High head pressure Dirty condenser Clean Inoperative fan motor Replace Shortage of water WC Red alarm LED blinks High evaporating temperature after 15 mins beginning freeze Hot gas valve leak Replace it Water inlet valve leak Replace it Short of refrigerant Compressor cycles intermittently Freezing LED Red alarm LED glow Freezing LED Red alarm LED blink Compressor cycles intermittently Cubes too small Cloudy cubes Condenser sensor out of order Evaporator sensor out of order Low voltage Contactor with burnt contacts AC 125 175 225 only Non condensable gas in system Compressor starting device with loose wires Mechanical problem Freezing cycle too short Capillary tube partially restricted Moisture in the system Shortage of refrigerant Shortage of water Dirty water supply Accumulated impurities after vacuum pump Replace it Replace it 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 dev
14. LDREN 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 removing the overflow stand pipe 9 Check for refrigerant leaks WATER DRAIN VALVE EVAPORATOR 4 CONDENSER 1 TIMER CONTACTOR COIL BIN TEMPERATURE SENSORS DATA PROCESSOR FAN MOTOR COMPRESSOR _ ELECTRONIC CARD Page 31 5 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 6 Plug in again the machine and push the PUSH BUTTON for more then 2 and less then 5 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 7 Let the unit to remain in the CLEANING mode for about 20 minutes then unplug again the machine 8 Flush out the cleaning solution from the sump reservoir then pours onto the evaporator cavity two or three liters of clean potable water to rinse the mold cups and the platen If necessary remove the water spray bar and spray jets to clean them separately 9 Plug in again the machine and push the PUSH BUTTON as per item 6 The water pump is again in operation to circulate the water
15. SERVICE MANUAL ICEU 125 ICEU 175 Electronic cubers with storage Table of contents page Specifications ICEU125 Specifications ICEU175 GENERAL INFORMATION AND INSTALLATION Introduction Unpacking and Inspection Location and levelling Electrical connections Water supply and drain connections Final check list Installation practice OPERATING INSTRUCTIONS Start up Operational 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 ICEU125 amp ICEU175 Service diagnosis MAINTENANCE AND CLEANING INSTRUCTIONS General Icemaker Cleaning instructions of water system Page 2 CO CON N N 10 11 24 25 26 29 30 Page 3 SPECIFICATIONS ELECTRONIC CUBER MODEL ICEU125 Important operating requirements MIN MAX Air temperature 10 C 50 F 40 100 F Water temperature 5 C 40 F 40 C 100 F Water pressure 1 bar 14 psi 5 bar 70 psi Electr voltage variations from voltage rating specified on nameplate 10 10 AIR COOLED MODELS WATER COOLED MODELS Kg C 72 5 10 20 Li 21 m Lu oc oc oc I 65 D L D 62 5 lt lt Lu a 60 85 a A A S S Q 55 gt E 52 5 2 en C T 2 C 2 50 lt lt
16. 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 TME 15 30 AIR WATER DIP SWITCH 1 0125 175 25 1 0125 175 Page 16 ooo C 0 coe co OVERFLOW DRAIN LINE INLET VALVE EVAPORATOR OVERFLOW DRAIN LINE Page 17 COMPRESSOR DRAIN LINE INLET VALVE OVERFLOW DRAIN LINE In Table B are indicated the various lengths of the timed portion of freezing cycle in relation to the different combinations ofthe DIP SWITCH KEYS In Table A here below are illustrated the DIP SWITCH keys combinations for the different models versions as they are set in the factory The electrical components in operation during the freezing cycle are COMPRESSOR FAN MOTOR 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 8 5 and 9 5 bars 110 130 psig being controlled by the temperature sensor probe located within the condenser fins On the 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 transmits a low voltage power flow to the Micro Processor of P C BOARD whic
17. 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 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 At the 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 new freezing cycle Page 19 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
18. and maintenance be conducted in the manner outlined in this manual B UNPACKING AND INSPECTION 1 Call your authorized ICE O MATIC 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 4a Cutandremove the plastic strip securing the carton box to the skid b Cutopen the top ofthe carton and remove the polystyrene protection sheet C Pull out the polystyrene 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 stetted 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 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
19. cle 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 C TO 15 C LENGTH PROGRAMS HARVEST CYCLE A B C D 180 Up to 6 30 5 Up to 9 30 XXXX 165 6 30 7 Up to 3 9 30 10 XXXX 150 7 8 9 315 10 11 XXXX 135 8 9 215 220 11 12 XXXX 120 91030 230 430 12 1330 lt 3 105 1053012 4306 1330 15 9 4 90 gt 12 6 15 gt 4 Page 22 DIP SWITCH keys 7 8 allow the extention of thelength of the harvest defrost cycle according to their combination as per following chart 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 Through its nozzles the water pumped is sprayed in each in
20. cordance with its particular location requirements B ICEMAKER Thefollowing maintenance should be scheduled at least two times per year on these icemakers 1 Check and clean the water line strainer 2 Check that the icemaker is leveled side to side and in front to rear directions 3 Clean the water system evaporator bin and spray jets using a solution of Ice Machine Cleaner Refer to procedure C cleaning instructions and after cleaning will indicate frequency and procedure to be followed in local areas EVAPORATOR CONDENSER ELECTR TIMER oc LL o LLI Bl Te oc LL Qa LL LL 22 eo DATA PROCESSOR 320 LL I IL Blos hm 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 4 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 sensors 5 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 6 Check size condition and texture of ice cubes Perform adju
21. d 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 fil it up and eventually to wash off any dirt that can have deposited it during the unit off period Fig 1 B During the water filling operation check to see that the incoming water dribbles through the evaporator platen dribbler holes down into the EVAPORATOR a 2 CONDENSER Lb BIN TEMPERATURE SENSORS COMPRESSOR 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 NOTE If 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 control WATER DRAIN VALVE CONTACTOR COIL a FAN MOTOR ELECTRONIC CARD Page 11 C Atcompletion of the wat
22. dividual cup to be frozen into ice It consists of one spray tube where are located several spray nozzles WATER PUMP The water pump operates continually throughout the freezing cycle and on the first 15 or 30 seconds of the defrost cycle 50 to such the remaining water from the sump tank reach in mineral salts and drain it out During the freezing cycle the pump primes the water from the sump to the spray system and through the spray nozzles sprays it into the inverted cup molds to be frozen into crystal clear ice cubes lt is recommended that the pump motor bearings be checked at least every six months LENGTH OF TIMED PORTION OF FREEZING CYCLE ACCORDING TO THE DIP SWITCH SETTING COMBINATIONS Page 23 J HOT GAS SOLENOID VALVE The hot gas solenoid valve consists basically in two parts the valve body and the valve coil Located on the hot gas line this valve is energized through the micro processor of P C BOARD during the 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 K FAN MOTOR The fan motor is controlled through the P C BOARD and the TRIAC by the condenser tempe rature sensor Normally it operates only during the freezing cycle to draw cooling air t
23. er filling phase 5 minutes the unit passes automatically into the Incase of condenser clogging such to prevent freezing cycle with the start up of the proper flow of the cooling air or in case COMPRESSOR the fan motor is out of operation or shortage of water in the water cooled condenser the CONTACTOR COIL condenser temperature rises and when it WATER PUMP reaches 70 C 160 F the condenser temperature sensor shuts off the ice maker FAN MOTOR controlled by the condensing wiih consa Ar quent light up of fine Fio ae sensor located within the condenser the RED WARNING LED Fig 3 OPERATIONAL CHECKS D Install if required the refrigerant service gauges on both the high side and low side After having diagnosed the reason of the rise Scraeder valves to check the compressor head of temperature and removed its cause it is and suction pressures necessary to unplug wait few seconds and plug in again the unit thus to put the machine NOTE On air cooled models the condenser in condition to initiate a new freezing cycle temperature sensor which is located within the The machine restarts with the usual 5 minutes condenser fins keep the head condensing a pressure between 8 5 and 9 5 bar 110 130psi odd 2 brad provide enough WATER DRAIN VALVE EVAPORATOR ORO WATER IN VALVE CONDENSER ELECTR P TIMER HOT y m gt CONTACTOR COIL e o_o FAN MOTOR o
24. g 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 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 of the electric potential of the evaporator sensor with the consequent activation of the 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 switches 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
25. g the compressor down been checked to ensure that the compressor is snugly fitted onto the mounting pads Page 9 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 and thephonenumber ofthe authorized ICE O MATIC Service Agency serving him G INSTALLATION PRACTICE Hand shut off valve Waiter filter Water supply line flexible hose 3 4 male fitting Vented drain Open trapped vented drain Drain fitting Main switch Power line 1 2 3 4 6 f 8 9 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 This icemaker will malfunction with water temperatures below 5 C 40 F or above 35 C 90 F Page 10 OPERATING INSTRUCTIONS START UP After having correctly installed the ice maker and completed the plumbing and electrical connections performthe following Start up procedure 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 switche
26. h in turn energizes through a TRIAC the FAN MOTOR When the opposite situation occurs 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 In case the condenser temperature probe senses that the condenser temperature has rised to 70 C 160 F on air cooled versions or 60 140 F on water cooled versions for one of the following reasons CLOGGED CONDENSER FAN MOTOR OUT OF OPERATION 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 warning the user of the Hi Temperature situation After having eliminated the source of the condenser hi temperature to restart the machine it is necessary to unplug wait few seconds and plug in again the unit The ice machine resumes its normal operation by going through the 5 minutes water filling phase At the start of the freezing cycle the refrigerant suction or low 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 ps
27. hrough the condenser fins In the second part of the freezing cycle the fan motor can run at intermittence as the condenser pressure must be kept between two corresponding head pressure values L 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 M CONTACTOR AC 125 175 225 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 N 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 15 seconds at the beginning of the defrost cycle it allows 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 ortotal clogging of the water system on the unit Page 24 ADJUSTMENT PROCEDURES A ADJUSTMENT OF THE CUBE SIZE
28. ic 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 length of the entire freezing cycle is governed by the evaporator temperature sensor which has its probe placed in contact with the evaporator serpentine Non adjustable 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 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 setting TIMER DATA PROCESSOR COMPRESSOR SWITCH G After about 17 20 minutes from the beginning of the freezing cycle in an hypothetical ambient temperature of 21 C the defrost cycle takes place with the hot gas the water inlet and the water drain valves simultaneously activated Fig 5 Theelectrical components in operation on models are COMPRESSOR CONTACTOR COIL WATER INLET VALVE HOT GAS VALVE WATER DRAIN VALVE and the WATER PUMP on the first 15 seconds on all models NOTE length of the defrost cycle is automatically determinated by the micro processor of the P C BOARD
29. ice Replace compressor Review setting of DIP SWITCH keys Blow charge add new gas amp drier evacuating system with Same as above Check for leaks amp recharge See remedies for shortage of water Use water softener or water filter Use ICE O MATIC Ice Machine cleaner Page 27 SERVICE DIAGNOSIS SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Shortage of water Irregular cubes size amp some cloudy Cubes too large Decreased ice capacity Poor harvest Water spilling out through curtain Water solenoid valve not opening Water leak in sump area Water flow control plugged Leak of water drain valve Some jets plugged Shortage of water Unit not level Freezing cycle too long 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 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 or replace curtain Replace valve Locate and repair Replace water inlet valve Replace valve Remove jet cover and clean See shortage of water Level as required Review setting of DIP SWITCH keys Replace Repair or replace Purge the s
30. ig with the cubes fully formed in the cup Page 18 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 temperature 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 and 8 as shown on table at page 32 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 onthe 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 and
31. 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 small Red LED ON steady TIME T2 Itis possible to extend the length of the defrost cycle by changing the setting of DIP SWITCH key 7 and key 8 as shown on table at page 22 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 WATER DRAIN VALVE 4 ELECTRONIC CARD I Checkthetexture 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 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 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 monitor 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 6
32. in order to rinse the entire water system 10 Unplug the machine then flush out the rinsing water from the sump reservoir then plug in again NOTE The ice maker will perform the 5 minutes WATER FILLING phase i e the water inlet solenoid valve opens to allow the incoming water to rinse again the water system and to properly fill up the sump reservoir for the next freezing cycle Sanitation NOTE Sanitation of the water system is recommended to be done once a month 11 Prepare in a plastic container the sanitation solution as per manufacturer dilution using warm water 45 50 C NOTE Never mix the cleaning with the sanitising solution 12 Follow the procedures as per cleaning from item 4 to item 10 just shorting the operation of the water pump to 10 minutes 13 Place again the evaporator cover and the unit service panels 14 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 case the ice cubes are cloudy white and have an acid taste melt them immediately by pouring some warm water over them This is to prevent someone from using them 15 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
33. p 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 sensors of ice level control the ice machine restarts again with the extinguishing of the YELLOW LED Page 21 D P C BOARD Data processor The P C BOABD 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 32 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 E RUE LU E PUSH BUTTON OPERATION DURING WATER FILLING PHASE e Push for more then 2 but less then 5 the machine enters in Cleaning Mode e Push for more then 5 the machine by pass the Water Filling Phase DURING FREEZING HARVEST CYCLE e Push for more then 5 during the Freezing cycle the machine goes immediately into Harvest e 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 temperat
34. stment of DIP SWITCH keys as required 7 Check the ice level control sensor to test shut off Put your hand 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 WATER DRAIN VALVE HOT GAS VALVE Qi R E 6 WO 0 7 CONTACTOR COIL FAN MOTOR ELECTRONIC CARD Page 30 C CLEANING INSTRUCTIONS OF WATER NOTE Within few seconds after the removal SYSTEM of the hand from the Infrared sensing light the icemaker restarts in freezing cycle The ice 1 Removethefrontandthetop panels to gain level control uses devices that sense light access both to the control box and to the therefore they must be kept clean enough so evaporator they can see Every month clean wipe the 2 Waittill the end of defrost cycle then unplug sensing eyes with a clean soft cloth the machine from power line Cleaning 3 Prepare the cleaning solution by diluting in a plastic container two liters of warm water 45 2 with a 0 2 liters of I CE O MATIC Ice Machine leaner WARNING The ICE O MATIC Ice Machine Cleaner contains Phosphoric and Hydrox yacetic acids These compounds are corrosive and may cause burns if swallowed DO NOT induce 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 CHI
35. tion of the 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 See figure Page 25 WIRING DIAGRAM ICEU 125 175 230 50 60 1 R ORANGE B WHITE G GREY N BLACK A BLUE M BROWN GV YELLOW GREEN UBVOS IVNIANH3L da E 5 SEC DURING FOR BY PASS PUSH MORE THEN 5 SEC DURING FREEZING FOR HARVEST PUSH MORE THEN 5 SEC DURING HARVEST FOR FREEZING PUSH Z TD 5 SEC DURING WATER FILLING FOR CLEANING TOO HI COND EVAP TEMP PUSH FREEZING OPER PRINTED CIRCUIT BOARD 3sra BIN FULL eS3Weo3SsNVSLDLPITV x POWER QN JAIVA NATOS HOLOW NY4 OZH 3A IVA QION J IOS 3A IVA GIION3 IOS 321 1721190 E3SN3UNOJ V SENSORS dA3L XQ1YX0 dVA 4 x USED ONLY UNIT AT 240V 20 JUST FOR AIR COOLED UNIT Page 26 SERVICE DIAGNOSIS SYMPTOM POSSIBLE CAUSE SUGGESTED CORRECTION Blown power in fuse in P C Board Replace fuse amp check for cause of blown fuse Unit will not run No warning LEDS glows Main switch in OFF position Turn switch to ON position
36. tions All ICE O MATIC icemakers require a solid earth wire All ICE O MATIC 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 1096 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 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 a Length of run b Water clarity and purity 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 colored 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 s
37. upplied 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 If water contains a high level of impurities it is advisable to consider the use an appropriate water filter or conditioner Page 8 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 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 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 Hasthe voltage been tested and checked against the data plate rating 6 Has the water supply pressure been checked to ensure water pressure of atleast 1 bar 14 psi 7 Check all refrigerant lines and conduit lines to guard against vibrations and possible failure 8 Havethe bolts holdin
38. ure LED activation e As per Harvest cycle chart if Push Button is activated after 15 C evaporating temperature LED activation Red LED inside PC Board ON steady m 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 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 ooo o9 B ix n ES 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 Infrared beam break out 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 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 or to shorten the length of freezing cy
39. ystem 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 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 SERVICE DIAGNOSIS SYMPTON Unit won t harvest Incorrect discharge pressure Excessive water in unit base POSSIBLE CAUSE Inoperative P C Board Hot gas valve not opening Water solenoid valve not opening Inoperative condenser sensor Inoperative P C Board Water regulating valve misadjusted AC 125 175 225 only Water tubing leaking Page 28 SUGGESTED CORRECTION Replace P C Board Valve coil with open winding Replace valve Valve coil with open winding Replace valve Replace sensor Replace P C Board Adjust its setting stem Check Tighten or replace Page 29 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 ac
Download Pdf Manuals
Related Search