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EF-Range Manual

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1. SPECIFICATIONS yu Dimensions HEIGHT less legs 795 mm HEIGHT with legs 915 mm WIDTH 950 mm DEPTH 605 mm WEIGHT 72 Kg EF 124 MACHINE SPECIFICATIONS Model Cond unit Finish Comp HP pora EUR EF 124 AS Air S Steel 3 8 40 Kg 130 EF 124 WS Water 620 Basic electr Amps Ds Watts BR Nr of wires Amps fuse 600 13 2 230 50 1 3 8 17 500 11 9 3 x 1 5 mm 10 A 15 C water temperature 7 SPECIFICATIONS ELECTRONIC FLAKER MODEL EF 156 Important operating requirements MIN MAX Air temperature 10 50 F 40 C 100 F Water temperature 5 40 F 40 C 100 F Water pressure 1 bar 14 psi 5 bars 70 psi Electr voltage variations fromvoltage rating specified on nameplate 10 10 Ki it AIR COOLED MODELS WATER COOLED MODELS Kg Kg C 150 10 160 10 21 146 156 21 142 uj 152 32 Es Fa E 38 T E 134 E 5 148 lt N lt 130 a hm tc 2 126 32 Es a 144 al 8 7 A i 122 O 140 ns
2. n YOSNAS dii3l GNOD NOILV LOY YOLOW 3V39 13431 931VM GdS Tm TOULNOD 3 0553 MOT OZH AIR COOLED MODELS EASY FIT MODEL DISTILLED WATER MODELS 5 enboe 211 25 x absieosip 4938 enboe 0211295 ejoA eAo mel3 JOA DIAA xd AJLA JOU 1939 9401eJ40deAa ejnjejeduus coL Josues aJnjeJaduja3 401e40de 3 eJnjeJeduje 1osu s TOL Josuas a4njeJeduue JasuapuoD enbe ol AI ISM 043u02 A 338 opuewo Ip e31uoJ31 epeu s TAOS pueog puewwo 1 pagud s 4 Ip aquesing JOSU S Tas TIL uognq usnd yasay 94 Josues uone304 1030W 1299 a4031n 193UT ou ld iollu 1uo2 losu s TVS TdO U21IMS 19MOd 10505 NIG enboe 211 2 VIA N 5 1030W enboe ojjaal 1 05 4 2 CSM TW 1023400 I A 493 4osseJduio enboe 03235055914 9J03e nUu9A SdS jO43U09 ainsseud OZH 4ojow ueq ad asp auoizuny w eps u svul ad asp auoizuny u jNPe IS wAs wis ad asp auoizuny uUjNP IS SERVI
3. 17 This will cause a gradual decrease of the water levelinthefloatreservoir and as soon as the level gets below the sensors the flaker stops to ope rate drive motor keeps on working by 3 delay then stops and the YELLOW warning LED will glow to signal the shortage of water Fig 4 NOTE The water level sensor detects the presence of sufficient water in the float reservoir and confirms it to the micro processor by maintaining a low voltage current flow between the two sensors using the water as conductor WARNING The use of de mineralized water water with no salt content having an electrical conductivity lower than 30 uS will cause the ability of the water sensors to vanish with the consequent CUT OUT of the flaker operations and the glowing of the YELLOW LED of shortage of water even though that water is indeed in the reservoir After this open the water supply line shutoff valve to fill up again the float reservoir the YELLOW LED goes off while the RED LED starts blinking After 3 minutesthe unitresumes its total operation with the immediate start up of the gear motor and 2 seconds later of the compressor F Check for correct operation of the ice level control by putting some ice so to cut the light beam of the sensing eyes This interruption will cause an immediate blinking ofthe Bin Full YELLOW LED located on the front of the P C Board and after about 10 seconds causes the shutoff
4. NL NL O O Oe EVAPORATOR TEMP L ICE LEVEL CONTROL 2 COMPRESSOR FAN MOTOR ELECTRONIC CARD 16 NOTE If after ten minutes from the compressor start up the evaporating tem perature has not dropped down to a value lower than 1 C 30 F due to an insufficient quantity of refrigerant in the system the evaporatingtemperature sensordetectssuch an abnormal situation and stops consequently the unit operation drive motor keeps on working for 3 delay then stops Inthis circustance the 5th warning YELLOW LED will blink The machine will remain in OFF mode for one hour then it will restart automatically In case the unit trips OFF again in alarm for 3 times in hours the machine SHUTS OFF DEFINITIVELY After having diagnosed and eliminated the cause of the poor evaporating temperature insufficient refrigerant in the system etc it is necessary to unplug and plug in again to restart the machine The unit before resuming the total operation willgo through the usual 3 minutes STAND BY period OPERATION CHECKS UPON THE UNIT START UP D Remove frontservice panel and if necessary install the refrigerant service gauges on the corresponding Service valves to check both the HI and LO refrigerant pressures NOTE On air cooled models the condenser temperature sensor which is located within the condenser fins keep the head conden sing pres
5. Scotsman SERVICE MANUAL NEW EF SERIES Electronic flakers with storage SCOTSMAN EUROPE FRIMONT SPA lt Es Via Puccini 22 20010 Pogliano M se Milano Italy amp 4 Tel 39 02 93960 1 Sel Telefax 39 02 93550500 Direct Line to Service amp Parts Phone 39 02 93960350 Fax 39 02 93540449 Website www scotsman ice com 900 E Mail scotsman europe frimont it E77 REV 04 2013 TABLE OF CONTENTS Table of contents page Specifications EF 103 Specifications EF 124 Specifications EF 156 Specifications EF 206 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 PRINCIPLE OF OPERATION How it works Water circuit Refrigerant circuit Mechanical system Operating pressures Components description ADJUSTMENT REMOVAL AND REPLACEMENT PROCEDURES Adjustment of the evaporator water level Replacement of evaporator temperature sensor Replacement of condenser temperature sensor Replacement of ice level light control Replacement of the gear motor rotation and speed sensor Replacement of the reservoir water level sensor Replacement of P C Board Replacement of the ice spout Replacement of the auger water seal bearings and coupling Replacement of the gear moto
6. C REPLACEMENT OF CONDENSER TEMPERATURE SENSOR 1 Remove the front panel 2 Trace the condenser sensor probe located within the condenser fins on air cooled version and withtrow it On water cooled version remove it by opening the plastic strap reusable securing the probe to the refrigerant liquid line 3 Trace the condenser sensor terminal plug black on the left side of the control box and remove it from its socket by carefully pulling out the terminal plug securing clip 4 Toinstallthe replacement condenser sensor follow the above steps in reverse D REPLACEMENT OF THE ICE LEVEL LIGHT CONTROL 1 Remove the front and top panels Trace the ice level light control terminal plug black and with four terminal pins on the left side of the control box and draw it out from its socket by carefully slackening the fastening tie 3 Unloose the two screws holding the optical ice level control to the upper side of the spout and remove it 4 To install the replacement ice level light control follow the above steps in reverse E REPLACEMENT OF THE GEAR MOTOR ROTATION AND SPEED SENSOR 1 Remove the front and top panels 2 Unloosethethree screws securing the plastic cover to the gear motor speed sensor housing and remove it 3 Unloose the two screws securing the sensor to the plastic housing and withdraw it from its seat 4 Trace the gear motor speed sensor terminal plug red with four pins on the left side
7. Water seal leaking Water feed line to freezer leaking Float valve not closing Spout leaking Replace water seal Check and fasten hose clamp Check and adjust float valve setting screw Tighten screws holding the spout Excessive noise or chattering Mineral or scale deposit on auger and inner freezer walls Low suction pressure Water feed line to freezer clogged Low water level into freezer Remove and manually polish auger and inner walls of freezer barrel using emery paper Add refrigerant to rise suction pressure Vent and clean it Adjust to approx 20 mm below ice spout Gear motor noise Worn rotor bearings Shortage or poor lubricant in gear case Gear case bearings and gear racers worn out Check and replace Check for proper lubricant opening gear case Top of gears must be covered with lubricant Check and replace worn parts Shortage of water Strainer at water inlet fitting clogged Float reservoir water nozzle clogged up Remove strainer and clean Remove float valve and clean nozzle 38 MAINTENANCE AND CLEANING INSTRUCTION A GENERAL The periods and the procedures for maintenance and cleaning are given as guides and are not to be construed as absolute or invariable Cleaning especially will vary depending upon local water and ambient conditions and the ice volume produced and each icemaker must be maintened individually in accordance wi
8. 7 o o o 6000 N FAN MOTOR ELECTRONIC CARD 23 REFRIGERANT METERING DEVICE capillary tube REFRIGERANT CHARGE R 404 A NOTE Before charging the refrigerantsystem always check the type of refrigerant and quantity as specified on the individual ice machine dataplate air cooled water cooled The refrigerant charges indicated are relatives EF 103 450 gr 300 gr to averages operating conditions EF 124 420 gr 300 gr EF 156 490 gr 300 gr EF 206 660 gr 520 gr OPERATING PRESSURES With 21 C ambient temperature EF 103 EF 124 EF 156 EF 206 Discharge 17 18 bar pressure Air cooled 245 260 psig 17 bar Water cooled 245 psig Suction 2 6 bar 2 2 bar 2 6 bar 2 5 bar pressure Air cooled 38 psig 32 psig 38 psig 36 psig 2 7 bar 2 5 bar 2 6 bar 2 4 bar Water cooled 39 psig 36 psig 38 psig 35 psig 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 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 PC Board and it s activated when Consensing temperature is higher then 70 C air cooled version ON steady with machine in OFF mode Consensing temperature is hig
9. Check for power to drive motor 16 A fuses Check for stator winding Check for correct operation of drive motor magnetic sensor Check for correct magnetic capacity of magnetic cylinder Replace it Replace it Replace it Compressor cycles intermittently Low voltage Non condensable gas in system Compressor starting device with Check circuit for overloading Check voltage at the supply to the building If low contact the power company Purge the system Check for loose wires in starting loose wires device Low ice production Capillary tube partially restricted Moisture in the system Low water level in the freezer Shortage of refrigerant Pitted or stained auger surface Blow charge add new gas amp drier after evacuating system with vacuum pump Same as above Adjust to approx 20 mm below ice spout Check for leaks amp recharge Clean or replace auger 37 SERVICE DIAGNOSIS SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Wet ice Ambinet temperature too high High water level in the freezer Faulty compressor Move unit to cooler location Lower to approx 20 mm below ice spout Replace Machine runs but makes no ice Water not entering in the freezer Gear stripped Moisture in the system Air look in feed line to freezer Clogged feed line to freezer Clean it Check and repair Purge replace drier and re charge Water leaks
10. it has two breaker teeth to break the ice and with its slanted shape from the rear tooth to the front one it compacts and forces the ice out in an horizontal way By undergoing this the ice looses its excess of water content so it drops into the bin in hard dry bits of ice In the ice breaker it is housed the top bearing which is made of two rolls bearings positioned to withstand the auger axial and radial loads This bearing is lubricated with a food grade water resistant grease NOTE It is advisable to check the conditions of both the lubricant grease and the top bearing every six months N DRIVE GEAR MOTOR This motoreducer is made of a single phase electric motor with permanent capacitor directly fitted on a gear box The drive motor rotor is kept aligned on its vertical axis by two ball bearings permanently lubricated The gear case contains a train of three spur gears the first one of which is in fiber to limit the noise Page 28 level All the three gears are encased in case bearings and are covered by lubricant grease MOBILPLEX IP 44 Two seal rings one fitted on the rotor shaft and the other on the output shaft keep the gear case sealed Hovewer the interior can be inspected and serviced by unbolting the two halves of the aluminium gear case housing The gear reducer output shaft is connected to the freezer auger by a ratched coupling which is made of two toothed halves that engages themselves o
11. REPLACEMENT OF THE ICE SPOUT 1 Remove the top panel 2 Slacken and remove the two metal straps that hold tight the polystyre insulations against the freezer upper part 3 Remove the optical ice level control 4 Unloose andremove the two screws andthe spout from the freezer cylinder 5 To install the replacement spout follow previous steps in reverse REPLACEMENT OF THE AUGER WATER SEAL BEARINGS AND COUPLING 1 Remove the front side and top panels 2 Follow the steps at item H to remove the ice spout 3 Grasp the wire cap hook at the top of the freezer and pull out the auger and attached cap ice breaker bearings and O rings at the top of the auger and the top half ofthe water seal atthe auger bottom NOTE If the auger cannot be pulled out proceed to steps 9 and 10 of this paragraph to gain access to the auger bottom Then with a rowhide mallet or placing a piece of wood on the bottom end of the auger tap this bottom to break loose the auger and be able then to pull it out as in step 3 above 4 With a circlip plier remove the retaining ring and cap hook from the ice breaker 5 Unlooseandremove cap screw and remove the ice breaker from the auger 6 Clean away the old grease from the interior of the ice breaker and inspect the conditions of the O ring if torn or worn replace it 7 Inspect the bearing pressed into the top of the ice breaker and if worn do not hesitate to replac
12. a 9 Q 1 114 m ss Q n en mio z O 132 106 jui 128 98 124 32 27 21 15 10 C 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 graph 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 SCOTSMAN FLAKER at peak performance levels periodic maintenance checks must be carried out as indicated on page 36 of this manual 8 MIN FOR UTILITY CONNECTIONS SIDE VIEW 605 23 13 16 FRONT VIEW 950 37 3 8 SPECIFICATIONS REAR VIEW 1006 39 5 8 ADJUSTABLE LEG 25 32 OVERFLOW DRAIN 20 1 15 16 487 GAS WATER INLET WATER COOLED UNIT ONLY GAS il gt z z 5 E a S x lt zi g 5 x lt D x 5 a lt 5 3 6 1 16 3 4 GAS WATER INLET 13 9 16 CORD SET Dimensions HEIGHT less legs 1006 mm HEIGHT with legs 1126 mm WIDTH 950 mm DEPTH 605 mm WEIGHT 88 Kg EF 156 MACHINE SPECIFICATIONS Model Con
13. and acan of food grade waterproof grease NOTE Install the upper bearing into the ice breaker starting by the radial portion that must be fitted with the flat surface facing up Apply some lubricant grease on the upper surface then install the rollers cage with the smaller openings of the same facing up so to leave a small gap between plastic cage and flat surface ofthe botton portion of the bearing see drawing 22 Bat Apply some move lubricant then place the S S trust washer 11 Reach through the adaptor and remove the coupling parts 12 Check both the coupling halves for chipping and wear and do not hesitate to replace them 13 To install the ratched coupling the water seal the bearings and auger follow previous steps in reverse NOTE It is very important to provide correct proper lubrication of the inside bore of the upper semi coupling as well as to the external surfaces of the teeth as shown on the here below photo The correct lubrication allows the upper semi coupling to move it down by the load of the upper spring in case of any rising up during its rotation C N J REPLACEMENT OF THE GEAR MOTOR ASSY 1 Remove the rear side and top panels 2 Remove the three bolts and washers securing the gear reducer base to the unitchassis then remove bolts and lockwashers which attach the bottom of the aluminium adaptor to the gear reducer case cover 3 Disc
14. and manufactured Their ice making systems are thoroughly tested providing the utmost in flexibility to fit the needs of a particular user NOTE To retain 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 Call your authorized SCOTSMAN Distributor or Dealer for proper installation 2 Visually inspect the exterior of the packing and skid Any severe damage noted should be reportedtothe delivering carrier and a concealed damage claim form filled in subjetto inspection of the contents with the carriers representative present 3 remove the plastic strip securing the carton box to the skid b Cut open 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 and the rear panels of the unit and inspect for any concealed damage Notify carrier of your claim for the concealed damage as stated in step 2 above 5 Remove all internal support packing and masking tape Leg package and water inlet and outlet hoses are located in the storage bin compartment 6 Checkthatrefrigerantlines do notrub against or touch other lines or surfaces and that the fan blades move freely 7 Check that the compressor fits snugly onto all its mounting pads 8 Use clean damp c
15. by 3 delay then stops with the 5th Warning YELLOW LED that blinks Page 24 NOTE The machine will remain in OFF mode for one hour then it will restart automatically In case the unit trips OFF again in alarm for 3 times in 3 hours the machine SHUTS OFF DEFINITIVEL Y To restart the unit after the shutoff caused by the hi evaporating temperature it is neces sary to switch OFF and ON the power line main disconnect Switch D WATER LEVEL SENSOR This sensor system consist of two small stainless steel rods vertically fitted on the inner face of the reservoir cover and electrically connected to the low voltage circuit of the P C Board When the cover of the reservoir is positioned in its place the tips of both the rods dip into the reservoir water and detects and signals its presence by making use of its electrical resistance NOTE In the event of shortage of water in the reservoir or in case the water used is too soft de mineralized to cause greater resistence to the current flow conductivity lower than 30S this sensor system causes the shutoff of the machine drive motor keeps on working by 3 delay then stops to protect it from running with an interrupted or inadequate water supply In this situation the YELLOW LED will glow to warn of the machine shutoff and the reason why E CONDENSER TEMPERATURE SENSOR The condenser temperature sensor probe located within the condenser fins air coo
16. light beam between the two light sensors is immediately signalled by the blinking of the BIN FULL YELLOW LED located on the front of the P C Board After about 10 of steady interruption of the light beam the unit stops drive motor keeps on working by 3 delay then stops and the Full Bin YELLOW LED glows steady The ten seconds of delay prevent the unit from stopping for any undue reason like the momentarily interruption of the light beam caused by the flakes that slides along the ice spout before dropping into the bin As some ice gets scooped out from the storage bin the light beam between the two sensors resumes fast blinking of YELLOW LED and ten seconds later the ice machine restarts the ice making process going always through the 3 stand by and the YELLOW LED goes off REFRIGERANT CIRCUIT 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 it looses some ofits pressure sothatits pressure andtemperature are lowered Next the refrigerant enters into the evaporator coil wrapped around the freezer inner tube The water being constantly fed at the interior of the freezer inner tube exchange heat with the refrigerant circulating into the evaporator coil this cause the refrigerantto boil off and evapora te ther
17. of the control box and draw it out from its socket by carefully slackening the fastening tie 5 Toinstallthe replacement gear motor rotation and speed sensor follow the above steps in reverse 0 5 1 0 mm F REPLACEMENT OF THE RESERVOIR WATER LEVEL SENSOR 1 Remove the front and top panels 2 Unloosethe two nuts securing the wire leads to the two water level sensor rods located on the water reservoir plastic cover 3 Trace the water level sensor terminal plug red on the left side of the control box and draw it out from its socket by carefully slackening the fastening tie 4 Toinstallthe replacement water level sensor follow the above steps in reverse G REPLACEMENT OF P C BOARD 1 Remove front panel 2 Remove all sensor terminal plugs located onthe leftside of P C Board by carefully releasing them out from their sockets clips 3 Disconnect the terminal board connection plug from the rear side of P C BOARD then unloose the four screws holding the same to the plastic control box and remove it 4 Toinstallthe replacement P C BOARDfollow the above steps on reverse Page 30 NOTE Incasethe TEST contacts are jumped together it is a possibility when PC Board is replace as spare parts the machine starts up immediately with all the electrical parts compressor drive motor and fan motor start together with no delay This for 3 minutes then the machine stops with all LEDs blinking H
18. of the light beam between the two infrared sensor of ice level control 10 seconds later the ice machine resumes its operation with the simul taneous extinguishing the 2nd YELLOW LED H P C BOARD Data processor The P C BOARD fitted in its plastic box located in the front of the unit consists of two separated printed circuits one at high and the other at low voltage and protected by fuses Also it consists of five aligned LEDS monitoring the operation of the machine of six jumpers TEST used only in the factory 60 70 C used to set up the PC Board at proper safety cut out condensing temperature 6 12 M to set up the PC Board to 6 or 12 months WATER SYSTEM CLEANING REMIND JUMP IN 6 MONTHS JUMP OUT 12 MONTHS CONDENSER SAFETY TEMP JUMP IN 70 C JUMP OUT 60 remind opf the water system cleaning PURGE to activate the operation of the Purge Sol enoid Valve used only on the machine equipped with purge Solenoid Valve PWD ON to set up the operation of the Water Drain Pump used only on EFC series and 3 60 To set up the PC Board for 3 or 60 minutes delay at start up as detailed here below Moreover the PC Board is equipped with input terminals for the leads of the sensor probes as T ON STEADY ON STEADY BLINKING ON STEADY BLINKING 22796 peoes ON STEADY Page 26 well as input and output terminals for the leads of the ice maker electrical wires The P C BOARD is
19. of the unit compressor first and 3 later the gear reducer with the simulta neous lighting steady of the Same LED signalling the full bin situation Fig 5 Remove the ice bin so to allow the resumption of the light beam previously interrupted After about 10 seconds the flaker will resume through the 3 minutes STAND BY period the ice making process with the extinguishing of the YELLOW LED NOTE The ICE LEVEL CONTROL INFRA RED 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 COMPRESSOR OOOO0 DATA PROCESSOR NL NA FAN MOTOR ELECTRONIC CARD NOTE During the life of the machine the Ice Level Control may require a recalibration mainly when the glass of the two optical eyes are covered by a thin lay of scale To do it just follow the following procedure With unit OFF push and old the Reset Button of the PC Board Give power to the machine through the Green Master Switch Hold the PC Board Reset Button till the le
20. the brain of the system and it elaborates through its micro processor the signals received from the sensors in order to control the operation of the different electrical components of the ice maker compressor gear motor etc The five LEDS placed in a row in the front of the P C BOARD monitor the following situations REASON WHY UNIT UNDER POWER UNIT OFF AT BIN FULL I R BEAM CUTTED IIR ON AFTER TRIP OFF AT BIN FULL NO WATER TOO HI DISCHARGE PRESSURE TEMP OR TO LOW ROOM TEMP lt 3 C DELAY AT START UP 3 min or 60 min according to the Jumper setting NO SLOW OR WRONG ROTATION OF DRIVE MOTOR TOO HI EVAP TEMP gt 0C AFTER 10 FROM START UP OR TOO LOW EVAP TEMP lt 25 C CONDENSER SENSOR OUT OF ORDER BLINKING BLINKING ALTERNATE EVAPORATOR SENSOR OUT OF ORDER OPTICAL ICE LEVEL CONTROL OUT OF ORDER BLINKING 6 OR 12 MONTHS WATER SYSTEM CLEANING REMIND according to the Jumper setting BLINKING IN SEQUENCE PURGE CYCLE IN OPERATION Only on units equipped with purge valve ON STEADY ocece UNIT OFF DUE TO THE JUMPER IN ON TEST CONTACTS 27 TO BY PASS THE 3 60 STAND BY TIME SYMPLY JUMP TEST CONTACTS WITH PCB ENERGIZED LUL 1 1 JUMPERS The Flaker PC Boardis equipped by three jumpers J1 PURGE Usedon machine equipped with Water Purge Valve to purge out the water f
21. the freezer assembly due to a faster freezing rate When the water level is above or below the correct one adjustment can be performed to Raise or Lower the water level by raising or lowering at the measure required the water reservoir and its mounting bracket 1 To Raise the water level a Loosen and remove the screw securing the mounting bracket of the water reservoir to the unit cabinet and raise the water reservoir to the correct level b Thread the mounting screw in the corresponding hole and tighten it 2 To Lower the water level follow the above indications to lower to the correct level the water reservoir assembly WARNING Be sure the electrical power supply circuit breaker and the inlet water supply are OFF before starting any of the following Removal and Replacement procedures as a precaution to prevent possible personal injury or damage to the equipments B REPLACEMENT OF EVAPORATOR TEMPERATURE SENSOR 1 Remove the front and top panels 2 Remove the insulation from the refrigerant tubing connecting the freezerto the accumulator to gain access to the sensor probe well and be able to pull out from this well the sensor probe 3 Trace the condenser sensor terminal plug blue on the left side of the control box and remove it from its socket by carefully pulling out the terminal plug securing clip 4 Toinstallthe replacementevaporator sensor follow the above steps in reverse
22. CE DIAGNOSIS Page 36 SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Unit will not run No LED lighted up Bin full yellow LED glows with no ice in the bin Water yellow LED glows Red alarm LED glows Reverse rotation yellow LED blinks Reverse rotation yellow LED glows Water yellow LED and red LED ON steady together Water yellow LED and red LED blink together Water yellow LED and red LED blink alternatively Blown fuse in P C Board Master switch in OFF position Inoperative P C Board Loose electrical connections Inoperative or dirty ice level control Shortage or too soft water High head pressure Ambient temperature too low Too hi evap temperature Shortage or lack of refrigerant Gear motor turns on reverse Too low gear motor rotating speed No rotation of gear motor Gear motor starts and stop after a while Inoperative Condenser Sensor Inoperative Evaporator Sensor Inoperative Ice Level Control Replace fuse amp check for cause of blown fuse Turn switch to ON position Replace P C Board Check wiring Replace or clean ice level control See remedies for shortage of water or install a mineral salt metering device Dirty condenser Clean Inoperative fan motor Replace Move unit in warmer location Checkandcharge refrigerant system Check gear motor capacitor Check rotor bearings freezer bearings and interior of freezer for scores Replace whatever worn or damaged
23. LINDER 1 Follow the steps at item H to remove the ice spout 2 Remove the clamp fastening the water hose to the water inlet port of the freezer assy Place a water pan under this water inlet port then disconnect the water hose and collect all water flowing from freezer and from water hose 3 Withdraw the evaporator sensor probe from the its holder as stated in item B 4 Recover the refrigerant from the system and transfer it in a container so to reclaim or recycle it 5 Unsolder and disconnect the capillary tube and the accumulator suction line assy from the outlet line of the freezing cylinder 6 Remove the three bolts and washers securing the gear reducer base to the unit chassis then remove bolts and lockwashers which attach the bottom of the aluminium adaptor to the gear reducer case cover 7 Lift the freezer up and off the gear motor assembly then if necessary remove the aluminium adaptor by removing the three mounting screws and lockwashers NOTE It is imperative to install a replace ment drier whenever the sealed refrigeration system is open Do not replace the drier until all other repairs or replacements have been completed 8 Toinstall the replacement evaporator follow the above steps in reverse Page 32 NOTE Thoroughly evacuate the system to remove moisture and non condensables after evaporator replacement N REPLACEMENT OF AIR COOLED CONDENSER 1 Remove front and
24. Re Set Button till it stops to blink FLOAT RESERVOIR The float reservoir consists of a plastic water pan on which is fitted a float valve with its setting screw The float valve modulate the incoming water flow to maintain a constant water level in the reservoir level that corresponds to the one in thefreezing cylinderto ensure proper ice formation and fluidity On the inner side of the reservoir cover are fitted the two water level sensors which detects the presence orthe shortage of water inthe reservoir NOTE Itis very important to make sure ofthe correct fitting of the cover on the reservoir in order to enable the sensor to efficiently control the water situation avoiding undue shutoff interventions L FREEZING CYLINDER EVAPORATOR The freezing cylinder is made of a stainless steel vertical tube on which exterior is wrapped around the cooling coil with the evaporating chamber and in its interior is located the auger which rotates on its vertical axis and it is maintained aligned by the top and bottom bearings A water seal system is located in the bottom part of the freezer while at the top end is fitted the ice breaker The water constantly flowing into the cylinder bottom part freezes into ice when in contact with the cylinder inner walls The ice is then lifted up by the rotating auger and compacted and forced out by the ice breaker M ICE BREAKER The ice breaker is fitted in the freezer upper part
25. S S S S S 21 32 32 27 21 15 WATER TEMPERATURE 38 AMBIENT TEMPERATURE Important operating requirements MIN Air temperature 10 50 Water temperature 5 40 Water pressure 1bar 14 psi Electr voltage variations fromvoltage rating specified on nameplate 10 ICE PRODUCED PER 24 HRS WATER COOLED MODELS Kg 121 119 117 115 113 111 109 107 105 103 101 99 97 95 9 91 89 87 85 83 32 27 21 15 WATER TEMPERATURE MAX 40 100 35 90 5 bars 70 psi 10 AMBIENT TEMPERATURE NOTE With the unit in built in conditions the ice production is gradually reduced in respect to the levels shown in the graph 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 SCOTSMAN CUBELET at peak performance levels periodic maintenance checks must be carried out as indicated on page 36 of this manual 6
26. SCOTSMAN FLAKER at peak performance levels periodic maintenance checks must be carried out as indicated on page 36 of this manual 10 SIDE VIEW 605 23 13 16 MN FOR UTILITY CONNECTIONS FRONT VIEW 37 3 8 SPECIFICATIONS REAR VIEW 4006 39 5 8 III i ADJUSTABLE LEG 25 32 OVERFLOW DRAIN 20 487 1 15 16 GAS 7 7 8 3 4 GAS WATER INLET WATER COOLED UNIT ONLY GAS WATER OUTLET WATER COOLED UNIT ONLY j 154 7 3 4 GAS 6 1 16 199 10 3 4 GAS WATER INLET 344 13 9 16 CORD SET Dimensions HEIGHT less legs 1006 mm HEIGHT with legs 1126 mm WIDTH 950 mm DEPTH 605 mm WEIGHT 90 Kg EF206 MACHINE SPECIFICATIONS Model Cond unit Finish Comp HP p ee EF 206 AS Air 200 EF 206 WS Water S Steel 58 60 Kg 1350 Basic electr Amps Watts k el Nr of wires Amps fuse 230 50 1 4 20 760 17 4 3 x 1 5 mm 10 15 water temperature 11 GENERAL INFORMATION AND INSTALLATION A INTRODUCTION This manual provides the specifications and the step by step proceduresforthe installation start and operation maintenance and cleaning for the SCOTSMAN EF series icemakers The Electronic Flakers are quality designed engineered
27. ST FACTORY USE ONLY AF EF MODELS JUMP IN AF SERIES JUMP OUT EF SERIES PURGE amp WATER INLET VALVES JUMP IN NO WATER INLET amp PURGE VALVES JUMP OUT WATER INLET amp PURGE VALVES START UP DELAY JUMP IN 3 MIN JUMP OUT 60 MIN interrupted for as long as 10 seconds the ice machine stops drive motor keeps on working by 3 delay then stops with the glowing up of the 2nd YELLOW LED to monitor the full ice bin situation The 10 seconds of delay prevents that any minimum interruption of the light beam due to the regular ice chuting through the ice spout may stop the operation of the unit NOTE During the life of the machine the Ice Level Control may require a recalibration mainly when the glass of the two optical eyes are covered by a thin lay of scale To do it just follow the following procedure With unit OFF push and old the Reset Button of the PC Board Give power to the machine through the Green Master Switch Hold the PC Board Reset Button till the leds start to blink flash more or less 10 seconds Release the PC Board Reset Button The Optical Ice Level Control is now recalibrated Check for the correct operation of the Optical Ice Level Control by plasing a handfull of ice in between the two eyes The Bin Full yellow led must start to blink flash immediately and 10 seconds later the machine must trip OFF As soon as the ice is scooped out with the resumption
28. all grease and apply a coating of food grade water proof grease P N 263612 00 NOTE It is recommended to use only food grade and waterproof grease to lubricate the freezer top bearing 13 Checkthe quality of ice Ice flakes should be wet when formed but will cure rapidily to normal hardness in the bin NOTE It is not abnormal for some water to emerge from the ice spout with the flaker ice C CLEANING INSTRUCTIONS OF WATER SYSTEM 1 Switch OFF the Master disconnect switch on the power line 2 Remove allice stored in the bin to prevent it from getting contaminated with the cleaning solution 39 3 Shutclose the water shutoff valve on water line 4 Removethe top panels to gain access to the water reservoir 5 Remove the float reservoir cover and witha piece of copper wire jump the two water level sensors 6 Place a water pan under the freezer water inlet port disconnect the water hose from this port and allow the water from the freezer to flow into the pan previously positioned Then refit the water hose to the freezer water inlet port 7 Prepare the cleaning solution by diluting in a plastic container one or two liters of warm water 45 50 C with a 0 1 0 2 liters of SCOTSMAN Ice Machine Cleaner WARNING The SCOTSMAN Ice Machine Cleaner contains Phosphoric and Hydroxyacetic acids These compounds are corrosive and may cause burns if swallowed DO NOT induce vomit
29. d unit Finish Comp HP ps ER EF156 AS Air S Steel 3 8 60 Ka 160 EF156 WS Water i 9 1000 Basic electr Amps Red Watts k va Nr of wires Amps fuse 230 50 1 3 8 17 650 14 7 3x1 5 mm 10 A 15 water temperature 9 d AM IT ice ICE PRODUCED PER 24 HRS Kg 200 196 192 188 184 180 176 172 168 164 160 156 152 148 144 140 136 132 128 124 ELECTRONIC FLAKER MODEL EF 206 III AIR COOLED MODELS 27 21 15 WATER TEMPERATURE 32 38 making capacity AMBIENT TEMPERATURE SPECIFICATIONS Important operating requirements Air temperature Water temperature 5 C MIN 10 C 50 F 40 F Water pressure 1 bar 14 psi Electr voltage variations fromvoltage rating specified MAX 40 C 100 F 40 C 100 F 5 bars 70 psi on nameplate 10 10 WATER COOLED MODELS Kg C 202 200 10 198 21 196 194 192 190 32 188 7 186 T m 184 B 182 38 ES B is m 178 9 176 174 gt a 172 a a ul 170 z is lt 166 164 162 160 158 156 154 32 27 21 15 10 C WATER TEMPERATURE NOTE The daily ice making capacity is directly related to the condenser air inlet temperature water temperature and age of the machine To keep your
30. ds start to blink flash more or less 10 seconds Release the PC Board Reset Button The Optical Ice Level Control is now recalibrated Check for the correct operation of the Optical Ice Level Control by plasing a handfull of ice in between the two eyes The Bin Full yellow led must start to blink flash immediately and 10 seconds later the machine must trip OFF G Ifpreviously installed remove the refrigerant service gauges and re fit the unit service panels previously removed H Instruct the owner user on the general operation of the ice machine and about the cleaning and care it requires PWD SYSTEM COMPONENTS 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 Page 18 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 The PC Board activates the Water Drain Pump for 15 seconds pumping out most of the water contained into the Sealed Water Reservoir The water can be pumped out up to 1 5 m rise or HAND DISCONNECT SWITCH WATER INLET WATER DRAIN A Check Valve located on the water drain hose 19 prevents the coming back
31. e it WARNING Thetop bearing assembly works in critical conditions for what concern its lubrication status as itis haused inthe ice breaker where the formation of a great rate of condensation is usual Therefore it is important to apply on it an ample coa ting of Food grade Waterproof Grease P N263612 00 before installing the breaker and cap hook in place 31 8 Slide off from the auger bottom the upper half of the water seal NOTE Any time the auger is removed for replacement or inspection use extra care in handling the water seal parts so no dirt or foreign matters are deposited on the surfaces of the seal If there is any doubt about the effectiveness of the water seal or O ring do not hesitate to REPLACE THEM 9 Unloose and remove the three bolts and lockwashers which attach the freezer assy to the aluminium adaptor 10 Raisethe freezer assy off the adaptor secure it out of the way to allow room to work Using a suitable lenght and size wooden dowel or stick inserted through the top of the open freezer tap the lower half of the water seal and the lower bearing out the bottom of the freezer NOTE It is good practice to replace the water seal assy and both the top and the bottom bearings any time the auger is removed To facilitate this SCOTSMAN EUROPE Service makes available a service Kit P N 001028 07 which includes besides the above mentioned parts the ice breaker O ring
32. e 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 Levelthe unitin 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 the rear of the unit Make sure that the ice machine is connected to its own circuit and individually fused see data plate for fuse size The maximum allowable voltage variation should not exceed 10 and 10 of the data plate rating Low voltage can cause faulty functioning and may be responsible for serious damage to the overload switch and motor windings NOTE All external wiring should conform to national state and local standards and regulations Check voltage on the line and the ice maker s data plate before connecting the unit E WATER SUPPLY AND DRAIN CONNECTIONS GENERAL When choosing the water supply for the ice flaker consideration should be given to a Length of run b Water clarity and purity C Adequate water supply pressure Since wateris the most importan
33. eby it changes from liquid into vapor The vapor refrigerant then passes through the suction accumulator and through the suction line where the refrigerant exchanges heat with the one flowing into the capillary tube warmer before being sucked into the compressorto be recirculated The refrigerant heat pressure is kept between two pre set values 17 18 bar 245 260 psig by the condenser temperature sensor which has its probe located within the condenser fins in air cooled versions This condenser temperature sensor when senses a rising of the condenser temperature beyond the pre fixed limit changes its electrical resistance and send a low voltage power flow to 21 the MICRO PROCESSOR of the Board which energizes through a TRIAC the Fan Motor in ON OFF mode When the opposite situation occures i e the condenser temperature gets below the pre fixed EVAPORATOR SUCTION LINE lt CONDENSER COMPRESSOR rd SO FAN MOTOR limit the temperature sensor changes again its electrical resistance reducing therefore the current flow to the P C Board to cause a temporary stop of the Fan Motor On the water cooled versions the refrigerant head pressure is kept at the constant value of 17 bar 245 psig by the metered amount of water passing through the condenser which is regulated by the action of the Water Regulating Valve that has its capillary tube connected to the liquid re
34. ent conditions i e when the condenser body temperature equivalent to the ambient temperature is lower then 1 C 34 F Fig 6 As soon as the ambient temperature rises up to 5 C 40 F the PC Board will automatically restarts the machine through the three minutes delay time COMPRESSOR O6000 DATA PROCESSOR 2 TRANSF NL CONTACTOR COIL SL an TT GEAR n MOTOR O HIST wal FAN MOTOR ELECTRONIC CARD The refrigerant suction Lo pressure sets in normal ambient conditions 21 C on the value of 2 4 2 6 bar 35 38 psig after few minutes from the unit start up This value can vary of 0 1 or 0 2 bar 1 5 3 psig in relation to the water temperture variations influencing the freezer cylinder NOTE If after ten minutes from the unit start up no ice is made and the evaporating temperature detected by the evaporator sensor results to be higher than 1 C 30 F the ice maker stops compressor first and 3 later the gear reducer and the 5TH WARNING YELLOW LED blinks The machine will remain in OFF mode for one hour then it will restart automatically In case the unit trips OFF again in alarm for 3 times in 3 hours the machine SHUTS OFF DEFINITIVELY MECHANICAL SYSTEM The mechanical system of the SCOTSMAN Flaker machines consists basically of a gear motor assembly which drives through a ratched coupling a worn shaf
35. erature and age of the machine To keep your SCOTSMAN FLAKER at peak performance levels periodic maintenance checks must be carried out as indicated on page 36 of this manual 4 SPECIFICATIONS i 9 mE WATER OUTLET WATER COOLED ONLY 152 _55_ SEAS WATER INLET WATER COOLED UNIT ONLY a A TE WATER INLET 405 oan OD OVERFLOW DRAIN B Dimensions HEIGHT less legs 1006 mm HEIGHT with legs 1126 mm WIDTH 592 mm DEPTH 622 mm WEIGHT 72 Kg B EF103 MACHINE SPECIFICATIONS Model Cond unit Finish Comp HP p esie EF 103 AS Air 105 EF 103 WS Water S Steel 1 4 30 Kg 440 Basic electr Amps Amas Watts ubere R Nr of wires Amps fuse 470 230 50 1 2 5 11 360 pt 3x1 5 mm 10 A 15 water temperature Paqe 5 Ice making capacity ICE PRODUCED PER 24 HRS SPECIFICATIONS ELECTRONIC CUBELET MODEL EF 124 A Kg 120 118 116 114 112 110 108 106 104 102 100 98 96 94 92 90 88 86 84 82 80 78 76 74 AIR COOLED MODELS i 63 B ii gt ES cm Ej SS os EJ a S 5 S S
36. erse 34 WIRING DIAGRAM AIR AND WATER COOLED 230 50 60 1 BLACK BK BN BU GY BROWN BLUE GREY GREEN YELLOW GREEN GNYE GN e m m 5 2 3 9 g S gt 5 9 m S gt E z to m a m 3 E i 9 m Q z eo 5 amp gt Q 5 8 a i 2 Lol 2 Ld z z ng z z T g pedum ZSM r 1 l 2 HM IN a m X4 T CH SAA E Tm HM IA3 2 LZ MET 2 ig x4 8 DIAA Yi E Wie ISM j 1 i E Ng A xg ng 1 1 Ng 05 xg HM a aa qu 0 2 fy o OH 90 90 D a m cou 01 s 58 sau 7 169 7 te1 2 91 2 MEM LE NOLV108 SNOSM dH3LdVA3 001 SQ um Lzh 4 a ay 0c Q WS 0N03 0 H 001 Q an ya m ayog LINDYIO G 31N1I3d ON Q 3 a gt g m3 z u No A A SX 9 8 x ZH 0S 2A OEZ THOS w0SN3S WAL
37. frigerant line As pressure increases the water regulating valve opens to increase the flow of cooling water to the condenser NOTE Incase the condenser temperature probe senses that the condenser temperature 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 abnormal reasons CLOGGED CONDENSER Aircooled version INSUFFICIENT FLOW OF COOLIN WATER Water cooled version FAN MOTOR OUT OF OPERATION Air cooled version AMBIENT TEMPERATURE HIGHER THEN 43 C 110 F itcauses the total andimmediate SHUT OFF of the machine drive motor keeps on working by 3 delay then stops 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 The machine will remain in OFF mode for one hour then it will restart automatically In case the unit trips OFF again in alarm for 3 times in 3 hours the machine SHUTS OFF DEFINITIVELY After having eliminated the source of the excessive con denser temperature to restart the ice machine it is necessary to unplug and plug in again The RED LED starts blinking and three minutes later the flaker unit resume its normal operating mode The condenser temperature sensor has a further safety function which consist in preventing the unit from operating in Lo ambi
38. h F GEAR MOTOR ROTATION AND SPEED SENSOR This safety device is housed on top of the Drive Motor and detects based on Hall Effect principle the rotating speed and rotating direction of the drive Motor Should the rotating speed drop below 1300 r p m the magnitude measured by this device is such to signal to the microprocessor to stop the unit and light up the YELLOW LED About the same reaction occures when the drive motor will tend to rotate in the wrong direction counterclockwise situation that if it occures will greatly affect all the freezer and gear reducer components NOTE The machine will remain in OFF mode for one hour then it will restart automa tically In case the unit trips OFF again in alarm for 3 times in 3 hours the machine SHUTS OFF DEFINITIVELY To restart the unit after the shutoff caused by this safety device it is necessary first to eliminate the cause that has generated the intervention of the device and then switch OFF and ON the power line main disconnect switch G ICE BIN LEVEL LIGHT CONTROL The electronic ice bin level control located into the ice spout has the function to stop the operation of the ice machine when the light beam between the light source and the sensor gets interrupted by the flake ice which accumulates in the spout When the light beam is interrupted the Bin Full YELLOW LED located in the front of the P C BOARD blinks in case the light beam gets TE
39. hen remove the copper wire used to jump the two sensors for the water level and place back correctly the cover on the float reservoir NOTE DO NOT use ice produced with the sanitising solution 14 With a sponge moisted with a sanitising solution wipe clean all the bin interior surfaces REMEMBER To prevent the accumulation of undesirable bacteria it is necessary to sanitise the interior of the storage bin with an anti algae disinfectant solution every week
40. her then 60 C 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 ON steady with machine in ON mode Water system need to be cleaned Slow blinking with machine in ON mode Pump discharge system out of order Blinking fast with machine in OFF 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 On the last case Pump discharge system to Re Set switch OFF and ON the machine C EVAPORATOR TEMPERATURE SENSOR The evaporator sensor probe is inserted into its tube well which is welded on the evaporator outlet line it detects the temperature of the refrigerant on the way out from the evaporator and signals it by suppying a low voltage current flow to the P C Board Micro Processor According to the current received the micro processor let the ice maker to continue its operations In case the evaporating temperatu re after 10 minutes from the unit start up does not go below 1 C 30 F due to shortage of refrigerant in the system the evaporator sensor signal reaching the microprocessor is such to stop immediately the unit operation drive motor keeps on working
41. ing 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 8 Switch ON the Master switch to start the unit then pour the cleaning solution into the float reservoir 9 Wait for about three minutes for the unit to start operating then continue to slowly pour the cleaning solution into the water reservoir taking care to maintain the level just below the overflow NOTE The ice made with the cleaning solution is slushy and coloured also it may tend to loose fluidity creating some resistence in being elevated and extruded this situation can be heard by the creacking noise made by the ice Should this occure it is recommended to stop for few minutes the ice machine in order to allow the ice in the freezer to partially melt 10 When all the cleaning solution has been used up open the water shutoff valve to allow new fresh water to flow into the reservoir Let the unit to continue to run until the ice resumes the normal colour and hardness 11 Stop the icemaker and pour warm water on the ice deposited into the storage bin to melt it up NOTE DO NOT use ice produced with the cleaning solution Be sure none remains in the bin 12 Pour into the water reservoir 1 cc approx 20 drops of Scotsman Sanitiser Antialgae P N 264000 00 then switch the unit ON 13 Left the unit running for approx 10 minutes t
42. it lines to guard against vibrations and possible failure 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 Manufacturers registration card been filled in properly Check for correct model and serial number against the serial plate and mail the registration card to the factory 12 Has the owner been given the name and the phone number of the authorized SCOTSMAN Service Agency serving him G INSTALLATION PRACTICE 90 F WARNING This icemaker is not designed for outdoor installation and will not function in ambient temperatures below 10 C 50 F or above 40 C 100 F This icemaker will malfunction with water temperatures below 5 C 40 F or above 35 C te 14 OPERATING INSTRUCTIONS START UP After having correctly installed the ice maker and completed the plumbing and electrical connections perform the following Start up procedure A Openthe water supply line shutoff valve and put the unit under electrical power by moving the main switch on the power supply line to the ON position The first LED GREEN will glow to signal that unit is under power NOTE Every time the unit is put under power after being kept for sometime in shut off conditions electrically disconnected the RED LED will blink for 3 min
43. led version or in contact with the tube coil water cooled version detects the condenser tempera ture variations and signals them by supplying current at low voltage to the P C BOARD In case the condenser temperature sensor detects a temperature at the condenser lower than 1 C 33 F that signify that the ambient temperature is at the same value therefore it is too low for the correct unit operation the sensor signals to the microprocessor to stop immediately or to do not start the unit operations up to the moment that the ambient temperature will rise to more acceptables conditions 5 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 that it can cool the condenser and reduce its tempera ture In the event the condenser temperature rises and reaches 70 C or 60 C the current arriving to the micro processor is such to cause an imme diate and total stop of the machine operation drive motor keeps on working by 3 delay then stops 25 NOTE The machine willremainin OFF mode for one hour then it will restart automa tically In case the unit trips OFF again in alarm for 3 times in 3 hours the machine SHUTS OFF DEFINITIVEL Y To restart the unit after the shutoff caused by the hicondenser temperature it is necessary to switch OFF and ON the power line main disconnect Switc
44. loth 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 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 SCOTSMAN EUROPE 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 Flaker is designed for indoor installation only Extended periods of operation at temperature exceeding the following limitations will constitute misuse under the terms ofthe 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 Wellventilated location for air cooled models Clean the air cooled condenser at frequent intervals d Service access adequate space must be left for all service connections through th
45. meter 1 4 pitch per foot Install a vertical open venton drain line high point at the unit drain connection to ensure good draining The ideal drain receptacle is a trapped and vented floor drain WATER DRAIN WATER COOLED MODELS Connect the 3 4 GAS male fitting of the condenser water drain utilizing a second flexible hose to the open trapped and vented drain This additional drain line must not interconnect to any other of the units drains 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 The water can be pumped out up to 1 5 m rise or HAND DISCONNECT WATER DRAIN 13 F FINAL CHECK LIST 1 Is the unit in a room where ambient temperatures are within a minimum of 10 C 50 F even in winter months 2 Is there at least a 15 cm 6 clearance around the unit for proper air circulation 3 Isthe unit level IMPORTANT 4 Have all the electrical and plumbing connections been made and is the water supply shut off valve open 5 Has the voltage been tested and checked against the data plate rating 6 Hasthe watersupply pressure been checked to ensure a water pressure of at least 1 bar 14 psi 7 Havetheboltsholding the compressor down been checked to ensure that the compressor is snugly fitted onto the mounting pads 8 Check all refrigerant lines and condu
46. nly if turned in the correct direction namely conterclockwise O FAN MOTOR Air cooled version The fan motor is controlled through the BOARD and the TRIAC by the condenser tempe rature sensor Normally itoperates to draw cooling air through the condenser fins In cold ambient situation the fan motor can run at intermittance as the condenser pressure must be kept between two corresponding head pressure values 17 18 bar 245 260 psig P WATER REGULATING VALVE Water cooled version This valve controls the head pressure in the refrigerant system by regulating the flow of water going to the condenser As pressure increases the water regulating val ve opens to increase the flow of cooling water Q 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 29 ADJUSTMENT REMOVAL AND REPLACEMENT PROCEDURES NOTE Read the instructions thoroughly before performing any of the following adjustment or removal and replacement pro cedure A ADJUSTEMENT OF THE EVAPORATOR WATER LEVEL The correct water level in the freezing cylinder is about 25 mm 1 below the ice discharge opening Lowwater level causes excessive strain inside
47. 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 20 PRINCIPLE OF OPERATION WATER CIRCUIT The water enterinthe machine through the water inlet fitting which incorporates a strainer and it is located at the rear side of the cabinet and then it goes to the water reservoir flowing through a float valve NOTE The presence of the water in the float reservoir is detected by a system of two sensors which operates in conjunction with the P C Board The two sensors use the water as a conductor to maintain alow voltage current flow between them signalling in this way to the P C Board the presence of the water in the reservoir Incase the water used is very soft de mineralized or the float reservoir gets empty the current flow between the sensors become so weak or is no longer maintained that as consequence the P C Board shutoff the flaker operation drive motor keeps on working by 3 delay then stops with the simultaneous glowing of the YELLOW LED signalling Shortage of water The float reservoir is positioned at the side of the freezing cylinder at such an height to be able to maintain a constant water level around the freezer auger In fact the water flows from the reservoir into the bottom inlet of the freezing cylinde
48. onnect the electrical leads from the electromagnetic safety device located on top of drive motor 4 Traceanddisconnectthe electric wires leads of the drive motor Lift and remove the entire gear motor assembly 5 Toinstall the replacement gear motor assy follow the above steps in reverse K REPLACEMENT OF FAN MOTOR 1 Remove front and side panels 2 Remove screws and yellow green ground wire Trace the electrical leads of fan motor and disconnect them 3 Remove the bolts securing the fan motor bracketto the cabinet base and then remove the assembly 4 Toinstall the replacement fan motor follow the above steps in reverse NOTE When installing a new fan motor check that the fan blades do not touch any surface and move freely L REPLACEMENT OF DRIER 1 Remove front and side panels 2 Recovertherefrigerantfromthe system and transfer it in a container so to reclaim or recycle it 3 Unsolderthe capillarytube andthe refrigerant line from the two ends of the drier 4 To install the replacement drier remove factory seals and solder the refrigerant lines and the capillary tube taking precautions to NOT OVERHEAT the drier body 5 Thoroughly evacuate the system to remove moisture and non condensable after drier replacement 6 Charge the system with refrigerant 134 A by weight see data plate of machine and check for leaks 7 Replace panels previously removed M REPLACEMENT OF THE FREEZING CY
49. r assy Replacement of fan motor Replacement of drier Replacement of the freezing cylinder Replacement of air cooled condenser Replacement of water cooled condenser Replacement of water regulating valve water cooled models Replacement of compressor Replacement of the gear motor magnetic sensor Wiring diagram Service diagnosis MAINTENANCE AND CLEANING INSTRUCTIONS General Icemaker Cleaning instructions of water system Page 2 3 Ice making capacity ICE PRODUCED PER 24 HRS ELECTRONIC FLAKER MODEL EF 103 AIR COOLED MODELS Kg 105 10 21 32 38 32 27 21 15 10 WATER TEMPERATURE AMBIENT TEMPERATURE SPECIFICATIONS Important operating requirements Air temperature Water temperature 5 40 F Water pressure Electr voltage variations fromvoltage rating specified on nameplate ICE PRODUCED PER 24 HRS MIN 10 C 50 F 1 bar 14 psi 10 MAX 40 C 100 F 40 C 100 F 5 bars 70 psi WATER COOLED MODELS Kg 110 108 106 104 102 100 98 96 94 92 90 88 86 84 82 80 78 76 74 72 70 27 21 15 WAT TER TEMPERATURE 10 oG 10 AMBIENT TEMPERATURE NOTE The daily ice making capacity is directly related to the condenser air inlet temperature water temp
50. r to sorround the stainless steel auger which is vertically fitted in the center of the freezer In the freezer the incoming water gets chilled into soft slush ice which is moved upward by the rotating action of the auger The stainless steel auger that rotates counter clockwise within the freezer is powered by a direct drive gear motor and carries the ice upward along the refrigerated freezer inner walls and by doing so the ice gets progressively thicker and harder ICE SPOUT FLOAT TANK FLOAT VALVE FREEZER FREEZER WATER FEED LINE WATER INLET LINE L The ice being costantly lifted up meet the toothed point of the ice breaker which is fitted on the top end of the auger where it gets compacted cracked and forced to change from vertical into horizontal motion to be discharged out through the ice spout into the storage bin By running the ice maker i e by putting the unit under power starts the automatic andcontinuous icemaking process which would not stop until the ice storage bin gets filled up to the level of the control eyes located on the sides of the ice spout As the ice level raises to interrupt the light beam running between the two infrared Leds the unit stops after six seconds compressor first and 3 later the gear reducer with the simulteneous glowing of the YELLOW LED signalling the Full Bin situation NOTE The interruption of the
51. roce dure to be followed in local areas NOTE Cleaning requirements vary according to the local water conditions and individual user operation 6 If required polish the two sensor rods secured to the float reservoir cover heavy scale sediment on them can be removed with the help of a bit of SCOTSMAN Cleaner plain 7 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 the condenser ambient temperature sensor 8 Checkfor water leaks and tighten drain line connections Pour water down bin drain line to be sure that drain line is open and clear Within few seconds from the removal of the ice between the sensor lights the ice maker resume its operation NOTE The ice level control uses devices that sense light therefore they must be kept clean enough so they can see 10 Check for refrigerant leaks and for proper frost line which should frost as far as approx 20 cm 8 from the compressor When doubtful about refrigerant charge install refrigerant gauges on corresponding Schr der valves and checkfor correctrefrigerant pressures See Operating pressure at page 20 of this manual 11 Check that fan blades move freely and are not touching any surfaces 12 Remove the retaining ring and the hook and cap from the top of the freezer assembly then inspect the top bearing wipe clean of
52. rom the water system every 12 hours and when the machine restart from the Bin Full JUMP IN Purge activated JUMP OUT Purge disactivated PWD Used to Pump Out the water by means of the Progressive Water Pump supplied as a kit JUMP IN No Progressive Water Pump installed in operation JUMP OUT Progressive Water Pump installed in operation 3 60 Delay time at start up JUMP IN 3 minutes delay JUMP OUT 60 minutes delay J2 TEST Factory use ONLY 6 12 Cleaning remind for the water system Red Light blinks flashes with machine ON JUMP IN 12 months set up JUMP OUT 6 months set up 60 70 C Set up of the Safety Condensing Temperature Sensor JUMP IN 70 C JUMP OUT 60 C J EXTERNAL SWITCHES SOCKET Connected to the external Green Master and Red Alarm Reset Switches it receives power from the Master Switch as well as it provides power to the Red Alarm switch in order to signal any possible uncorrect operation condition of the machine as clogged air filter air cooled version only or short missing of condensing water water cooled version as detailed at item B It signal also the time for the cleaning of the water system of the machine cleaning that can be change according to the local water conditions from six month standard Jump In to twelve months Jump Out Once cleaned the water system it s necessary to cancel the time stored into the PC Board by pushing and hold for more then 5 the Red Alarm
53. s 2 Remove the cover and disconnect the electrical leads from the compressor junction box 3 Recoverthe refrigerant from the system and transfer itin a container so to reclaim or recycle it 4 Unsolder and disconnect both the suction line and the discharge line from the compressor 5 Removethefourcompressor mounting bolts and the compressor from the unit base 6 Unsolder suction and process header from compressor and retain it to be used on new compressor NOTE It is imperative to install a replace ment drier whenever the sealed refrigeration system is open Do not replace the arier until all other repairs or replacements have been completed 7 Toinstallthe replacement compressor follow the above steps in reverse NOTE Thoroughly evacuate the system to remove moisture and non condensables after compressor replacement R REPLACEMENT OF THE GEAR MOTOR MAGNETIC SENSOR 1 Remove top and back panel 2 Unloose the three screws securing the plastic cover to the top of the gear motor and remove it 3 Unloose the two screws securing the magnetic sensor to the plastic housing and withdraw it from its seat 4 Trace the gear motor magnetic sensor terminal plug on the rear side of the control box red with four terminal pins and draw it out from its socket by carefully slackening the fastening tie 5 To install the replacement gear motor magnetic sensor follow the above steps in rev
54. side panels 2 Remove from the condenser fins the condenser ambient temperature sensor probes 3 Remove the two bolts attaching the condenser to the base 4 Recover the refrigerant from the system and transfer it in a container so to reclaim or recycle it 5 Unsolder the refrigerant lines from the condenser and remove it from the unit NOTE It is imperative to install a replace ment drier whenever the sealed refrigeration system is open Do not replace the arier until all other repairs or replacements have been completed 6 Toinstall the replacement condenser follow the above steps in reverse NOTE Thoroughly evacuate the system to remove moisture and non condensables after condenser replacement O REPLACEMENT OF WATER COOLED CONDENSER 1 Remove front and side panels 2 Remove the condenser temperature sensor probes from condenser 3 Remove bolts which secure the condenser to the unit base 4 Remove the corbin clamps and disconnect the plastic hosesfromthe water cooled condenser 5 Recover the refrigerant from the system and transfer it in a container so to reclaim or recycle it 6 Unsolder the refrigerant lines from the condenser and remove it from the unit NOTE It is imperative to install a replace ment drier whenever the sealed refrigeration system is open Do not replace the arier until all other repairs or replacements have been completed 7 Toins
55. sure between 17 and 18 bar Incase of condenser clogging such to prevent the proper flow of the cooling air or in case the fan motor is out of operation or shortage of water in the water cooled condenser the condenser temperature rises and when it reaches 70 C 160 F for air cooled version and 60 C 140 F for water cooled version the condenser temperature sensor shuts off the ice maker drive motor keeps on working for 3 delay then stops with the consequent light up of the RED WARNING LIGHT Fig 3 vire The machine will remain in OFF mode for one hour then it will restart automatically In case the unit trips OFF again in alarm for 3 times in 3 hours the machine SHUTS OFF DEFINITIVEL Y After having diagnosed the reason of the temperature rise and removed its cause it is necessary to proceed as per the previous NOTE to start up again the operation of the ice maker E Check for the correct CUT OUT and CUT IN of the float reservoir water level sensors by first shutting closed the water shutoff valve on the water supply line O O WATER we T OO L i L 1 GEAR MOTOR ROTATION r wn o CONDENSER TEMP i L 77 1 ie E wn a EVAPORATOR TEMP lt CIS DHL a ICE LEVEL CONTROL Cc sO CI O N 2 TRANSF e O m e LL o o N N OOS FAN MOTOR ELECTRONIC CARD
56. t or auger placed on its vertical axis within the freezing cylinder The gear motor is made ofa single phase electric motor with a permanent capacitor This motor is Page 22 directly fitted in the gear case through which it drives in counter clockwise rotation at a speed of 9 5 r p m the freezer auger being linked to it by the ratched coupling NOTE In the event the gear motor will tend to rotate in the wrong direction counter clockwise or not rotating at all or rotating at lower speed the unit will stop immediately with the glowing of the WARNING YELLOW LED on account of the intervention of the Electromagnetic Safety Device based on Hall Effect principle The machine will remain in OFF mode for one hour then it will restart automatically In case the unit trips OFF again in alarm for 3 times in 3 hours the machine SHUTS OFF DEFINITIVELY After having diagnosed and eliminated the source of the failure to restart the unit it is necessary to switch OFF and ON the power line main disconnnect switch Fig 7 The RED LED will start blinking and after 3 minutes the ice maker will resume its total operations by running first the gear motor and then the compressor NN ROTATION en GEAR MOTOR gt a 5 O o 2 CONDENSER TEMP PENNE i L O ul o O a EVAPORATOR TEMP r O O a ICE LEVEL CONTROL O O C e 1 O m N TRANSF
57. t 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 scale build up on the interior parts ofthe water system while too soft water with too lo contents of mineral salts will produce a very hard flaker ice WATER SUPPLY Connect the 3 4 GAS male of the water inlet fitting using the flexible hose supplied 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 installation of an appropriate water filter or conditioner WATER SUPPLY WATER COOLED MODELS The water cooled versions of SCOTSMAN Ice Makers requiretwo separate inlet water supplies one for the water making the flaker ice and the other for the water cooled condenser Page 12 Connect the 3 4 GAS male fitting of the water inlet using the flexible hose supplied to the cold water supply line with regular plumbing fitting and a shut off valve installed in an accessible position between the water supply line and the unit WATER DRAIN The recommended drain tube is a plastic or flexible hose with 18 mm 3 4 I D which runs to an open trapped and vented drain When the drain is a long run allow 3 cm pitch per
58. tall the replacement condenser follow the above steps in reverse 33 NOTE Thoroughly evacuate the system to remove moisture and non condensables after condenser replacement P REPLACEMENT OF WATER REGULATING VALVE WATER COOLED MODELS 1 Remove front and rear panels 2 Closethe shut off valve on the water supply line and disconnect it at the rear of the flaker 3 Remove corbin clamp and disconnect the water hose from the outlet of water regulating valve 4 Unloosethenutsecuringthe waterregulating valve to the unit frame 5 Recovertherefrigerantfrom the system and transfer it in a container so to reclaim or recycle it 6 Trace the water regulating valve capillary tube andunsolder its end from the refrigerantline then remove it from the unit NOTE It is imperative to install a replace ment drier whenever the sealed refrigeration system is open Do not replace the drier until all other repairs or replacements have been completed 7 To install the replacement water regulating valve follow the above steps in reverse NOTE Thoroughly evacuate the system to remove moisture andnoncondensables after water regulating valve replacement NOTE The water flow that passes through the valve can be adjusted by means of the valve setting stem in order to have a condensing pressure of 9 5 bars 138 psig Q REPLACEMENT OF COMPRESSOR 1 Remove back and front panel
59. th its particular location requirements B ICEMAKER The following maintenance should be scheduled at least two times per year on these icemakers 1 Check and clean the water line strainer 2 Remove the cover from the float reservoir care to do not damage the two water sensors and depress the float to make sure that a full stream of water enters into the reservoir 3 Checkthatthe icemaker is levelled in side to side and in front to rear directions 4 Check that the water level in the water reservoir is below the overflow but high enough that it does not run out of the spout opening 9 Check the ice level control sensor to test shut off Put some ice in front of the ice level control so to cut off the light beam for at least 10 seconds This should cause the immediate blinking of the Bin Full YELLOW LED located in the front of P C Board and 10seconds later the total stopping of the ice maker with the simultaneous light up of the Full Bin Yellow LED steady NOTE Test the operation of the Ice Level Control using ice NOT HAND NOTE The float must close positively the incoming water flow when its fulcrum housing the setting screw is perpendicular to the water nozzle 5 Clean the water system water reservoir and the interior of freezing cylinder using a solution of SCOTSMAN Ice Machine Cleaner Refer to procedure C cleaning instructions and after cleaning will indicate frequency and p
60. utes after which the unit will start up with the immediate operation of the gear motor assembly and after few seconds of the compressor assy Fig 1 B Elapsedthe 3 minutes stand by period the unit starts operating with the activation in sequence of the following assemblies GEAR MOTOR COMPRESSOR FAN MOTOR if unit is an air cooled version kept under control by the condenser temperatu re sensor which has its probe within the condenser fins Fig 2 C After 2 or 3 minutes from the compressor start up observe that flaker ice begins dropping off the ice spout to fall into the storage bin NOTE The first ice bits that drop into the ice storage bin are notso hard as the evaporating temperature has not yet reached the correct operating value It is necessary to allow the ice just made to cure itself and wait for about ten minutes for the evaporating tem perature to reach the correct value so to make more hard bits of ice NL OQ O en GEAR ROTATION LNT CONDENSER TEMP T gt 1 C so SENSOR DATA PROCESSOR O EVAPORATOR TEMP or O ICE LEVEL CONTROL O O O L 27 TRANSF g COM PRESSOR NL OO FAN MOTOR ELECTRONIC CARD 15 NL OOOO EVAPORATOR TEM ICE LEVEL CONTROL sO COMPRESSOR FAN MOTOR ELECTRONIC CARD

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