MV 300 MV 450 MV 600 MV 800 MV 1000
Contents
1. Fan Motor remains in OFF mode unless the Condenser Sensor probe rise up to more then 38 same set up as per end of freezing cycle 4 When the ice plate is falling down from the evaporator the magnetic switch is activated for a while providing the signal to the PC Board to restart a new freezing cycle 5 Observe first ice cube harvest and check size of ice cubes if an adjustment is required thread down or out screw N 1 as shown on below illustration This screw position determines the distance between the sensor reeds and the egg crate evaporator thus keeping the ice cube at a proper thickness Page 18 NOTE This type of machine produce an ICE PLATE that breaks when falls down into the storage bin Setting the ice thickness sensor in order to have single ice cubes may cause malfunction of the machine 6 Observe second and third cube harvest Check if size and shape combination is correct Inareas where extreme problem water conditions exist filtering or purifyng equipment is recommended NOTE If water used is too soft demineralized the ice thickness sensor might not be able to sense the water on its reeds there by it will not switch the unit on harvest cycle A safety system built in the P C Board switches the unit on harvest cycle whenever the freezing period gets longer then 30 or 40 NOTE To assure a correct operation of the machine the water must have a minimum electrical2. a C LU E LLI 2 5 lt LU A m A m LLI LLI C lt lt WATER TEMPERATURE WATER TEMPERATURE NOTE To keep your Modular cuber performing at its maximum capacity it is necessary to perform periodic maintenance as outlined on the last pages of this manual Page 4 SPECIFICATIONS CONT D AIR COOLED 512 5 CORD SET 3 4 GAS WATER INLET WATER OUTLET WATER COOLED Accessoires KSC 300 Cube stacking kit Dimensions HEIGHT 575 mm 22 1 2 3 4 WATER INLET WATER COOLED ONLY WIDTH 960 mm 22 3 4 WATER DRAIN WATER COOLED ONLY DEPTH 620 mm 24 1 2 WEIGHT 55 Kgs MV 300 MACHINE SPECIFICATIONS aaHnVUuaaI Model Cond unit Finish Comp HP 1 24 HR MV 300 AS Air MV 300 WS Stainless Steel Model Basic Start Electric power cons electr ne amps wals Kwhx24 HR A L MV 300 AS 780 18 7 Cubes per harvest 132 Full 264 Half With water at 15 Page 5 SPECIFICATIONS MODULAR CUBER MV 450 Ice making capacity AIR COOLED MODELS WATER COOLED MODELS Kg C 220 Z is gj D dE 200 2 A lt A lt oc cr oc ae LLI 180 LLI A A Q A O a LLI O ps C 160 D D Q Z Q Z Z 140 m m if m z O lt O lt 120 32 27 21 15 10 C WATER TEMPERATURE WATER
3. LED Nr 3 Bin full Washing LED Nr 4 Alarm LED Nr 5 Alarm high pressure BUTTON B Reset Washing MV SERIES PC BOARD 2 P C Board Located in the control box this board is the brain of the system as it governs the ice machine cyclematic through sensors relays and switch lt consists of two separated printed circuits one at high and the other at low voltage integrated with a fuse of four connectors for the sensors switches condenser sensor BLACK magnetic switch GREEN ice thickness sensor RED water level sensor BLUE of two jumpers one J1 for factory use only and the second J2 for the selection between manual or automatic reset mode of one outlet connector front LED display black one serial port connector black and of four plug in terminals for input and output power With J2 closed the P C Board is set up for Manual reset mode When J2 is open on Automatic Reset mode The P C Board is equipped by an electronic safety timer that turns on automatically the unit to defrost cycle when freezing cycle is longer then 30 or 40 minutes and trips off completely unit when defrost cycle is longer then 3 5 minutes 4th Red LED ON A trimmer located close to the transformer can change the current received back from the Ice Tickness Sensor according to the Electrical Conductivity of the water 3 Compressor Contactor Located in the control box the compressor contactor functions to c
4. Fan Motor only WATER cooled unit H Led card RC Compressor relay PC Board CS Start capacitor J Hi pressure switch CM Run capacitor Page 29 MV 800 1000 WIRING DIAGRAM 400 V 50 Hz 3 ph brown light blue yellow green white black red orange purple lt O lt p gt 5 c O S 3 COMPRESSORE SBRINAMENTO VENTILATORI ke T Br Hel T E LINEA PRESS MAX T A lt r u e x AB S OW L1 L2 L3 NO o 380 400V 50 Hz m PE A Input terminal board Automatic reset switch B Compressor remote control switch Water pump Compressor Water inlet valve Ice sensor Water discharge valve Hot gas valve Fan Motor 1 only AIR cooled unit Fan Motor 2 only AIR cooled unit Cranckase heater Delay by pass switch Start delay electronic board End defrosting switch Water level sensor Condenser temperature probe Led card Electronic card Max pressure switch Aog c lt T O Ti IT O Page 30 SERVICE DIAGNOSIS The table below is intended as a quick reference to aidthe Service Agentin determining the cause of a particular type of malfunction as well as the recommended repair It is not intended to be an exclusive list SYMPTOM POSSIBLE CAUSE CORRECTION Reference to other portions of this manual inclusing wiring diagrams installation and operation are recommended to better de
5. controlled by the amount of waterflowing through the condenser which is determined by the water regulating valve After the gas is cooled in the condenser giving up much of its heat the gas condenses into a high pressure liquid This liquid travels through the liquid line to the metering device a thermostatic expansion valve The thermostatic expansion valve meters how much liquid refrigerant is to be allowed into the evaporator section of the refrigeration system Thisis determined by the temperature of the TXV sensing bulb located on the suction line manifold at the outlet of the evaporator If the bulb senses a warm suction line more refrigerantis allowed into the evaporator common at the beginning of the freeze cycle and when the temperature begins to fall less refrigerantis allowed through This is why the suction side gauge pressure will decline throughout the freeze cycle At the evaporator the liquid refrigerant released from high pressure boils off in the low pressure environment and absorbs heat thus cooling the evaporator surface and anything near it such as water The low pressure refrigerant vapor then is forced through the heat exchanger where any excess liquid refrigerant boils off allowing only refrigerant vapor to enter the compressor suction tube where it is recompressed into high pressure high temperature gas again and the cycle repeats Page 20 FREEZE CYCLE WATER SYSTEM A combinatio
6. 3 then the entire machine through the Start Up Cycle Mode TOO LONG HARVEST CYCLE After the 3 30 of the Harvest Cycle the PC Board move back the machine into a new Freezing Cycle SERVICE SPECIFICATION In servicing a machine it is often useful to compare that individual units operating characteristics to those of a normally operating machine The data that follows gives those characteristics however be aware that these values are for NEW CLEAN machine operating at 21 C ambient and 15 C water USE THESE NUMBERS AS A GUIDELINE ONLY COMPONENT Reservoir level MV 300 450 600 80 85mm MV 800 1000 100 105 mm Disch Pressure Pressure Pressure Freeze Freeze CUT max min OUT Suction Pressure Beginning end time Freeze Page 24 High Pressure Safety Switch MV 300 Cut IN 19 bar Cut OUT 30 bar MV 450 600 800 1000 Cut IN 23 bar Cut OUT 33 bar OPERATING CHARACTERISTICS On air cooled models during the freezing cycle the discharge pressure is maintained between two preset values by means of fan control condenser sensor and at the same time the suction pressure will also decline reaching it s lowest point just before harvest Compressor amps experience a similar drop On water cooled the discharge pressure is constantly maintained during the freeze cycle by the water regulating valve However suction pressure and compressor amps will sti
7. TEMPERATURE NOTE To keep your Modular cuber performing at its maximum capacity it is necessary to perform periodic maintenance as outlined on the last pages of this manual Page 6 SPECIFICATIONS CONT D AIR COOLED 512 5 CORD SET 3 4 GAS WATER INLET WATER OUTLET WATER COOLED Accessoires KSC 450 Cube stacking kit Dimensions HEIGHT 575 mm 22 1 2 3 4 WATER INLET WATER COOLED ONLY WIDTH 760 mm 30 3 4 WATER DRAIN WATER COOLED ONLY DEPTH 620 mm 24 1 2 WEIGHT 77 Kgs MV 450 MACHINE SPECIFICATIONS eme o ma ERR Model Cond unit Finish Comp HP I 24 HR MV 450 AS Air 340 MV 450 WS Water Sua om 1900 MV 450 AS 6 1000 24 0 Cubes per harvest 204 Full 408 Half With water at 15 Page 7 SPECIFICATIONS MODULAR CUBER MV 600 Ice making capacity AIR COOLED MODELS WATER COOLED MODELS Kg Kg C 320 10 300 o Lu o Lu 290 E 280 E lt 21 lt a lt oc oc oc Li 260 D 260 A A A A a e gt LLI LLI LLI LLI C 230 240 RE D Q zZ Q Z Z 00 D 20 38 A LLI LLI O lt O lt ES 200 32 27 21 15 10 C 32 27 21 15 10 C WATER TEMPERATURE WATER TEMPERATURE NOTE To keep your Modular cuber perfor
8. conductivity of 20 us 7 Check operation of magnetic switch controlling it by keeping open the bottom end of plastic deflector for more than 30 seconds The machine must switch off at storage bin full Release the plastic deflector The machine should restart in the freezing cycle mode within few seconds going through a 3 delay time 8 Place again all cabinet panels and screws previously removed 9 Thoroughly explain to owner user the significant specifications of the ice maker start up reset and operation going through the procedures in the operating instructions Answer all questions about the ice maker by the owner and inform the owner himseft of the name and telephone number of the authorized service agency serving him Page 19 OPERATION FREEZE CYCLE HEAT EXCHANGER THERMOSTATIC EXP VALVE HOT GAS VALVE COMPRESSOR CLOSED LIQUID CONDENSER 5 RECEIVER PRESSURE SWITCH FAN CONTROL REFRIGERATION SYSTEM SCHEMATIC REFRIGERATION DURING FREEZE This ice machine employes either air or water as acondensing media the refrigeration system for either one is a follows At the hermetic compressor Refrigerant is compressed into a high temperature high pressure gas The gas moves through the discharge line into the condenser air or water cooled If air cooled the discharge pressure will change with the heat load and the ambient air temperature If water cooled the discharge pressure is
9. line Open vented water drain Water outlet from the condenser water cooled version only E ee When choosing the water supply for the MV Cuber consideration should be given to A Length of run B Water clarity and purity C Adequate water supply pressures Since water is the mostimportant single ingredient in producing ice you cannot over emphasize the three items listed above Low water pressure below 1 bar may cause malfunction of the icemaker unit Water containing excessive minerals will tend to produce cloudy colored ice cubes plus scale build up on parts in the water system Heavily chlorinated water can be controlled using charcoal or carbon filters DRAINS AIR COOLED MODELS There is one 20 mm dia sump drain fitting at the back of the cabinet Insulations in high humidity areas is recom mended The ideal drain receptacle would be a trapped and vented floor drain WATER COOLED MODELS Besides the above drain a separate condenser drain must be run Connect it to the 3 4 gas condenser drain connection at the back of the cabinet STORAGE BIN A separate gravity type drain needs to be run similar to the air cooled sump drain Insulation of this drain line is recom mended FOR THE ELECTRICIAN ELECTRICAL CONNECTIONS The unit come equipped with an electrical cord for power supply The lead wires must be connected to an electrical plug that corresponds to the local electrical codes and require
10. to the water pump motors Then as the ice thickness reaches the value that corresponds to the full cube size the film of water that constantly cascades over the slab of ice formed on the evaporator arrives to establish a contact between the two fingers energised at low voltage of the ice sensor control located on the front upper right side of the evaporator If the contact between the two fingers of the ice sensor remains established by the film of water for more than 10 seconds a small relay of the electronic board get energized controlling simultaneously both the hot gas valve and the water drain valve NOTE in case of failure of ice level sensor the P C Board turns on automatically the unit into the defrost cycle when the freezing cycle reaches 30 or 40 minutes according to the operation of the fan motor during the freezing cycle At this point the unit initiates the defrost cycle The hot gas circulating into the evaporator serpentine causes a slight melting of ice cubes which getreleased fromtheir molds Once entirely released the ice cubes drop simultaneously into the ice storage bin below by doing so they move apart from the evaporator bottom end the plastic deflector This plastic deflector has on its side a magnetic switch that on account of the deflector swinging motion caused by the ice while dropping in the bin opens and closes their contacts This will in turn disactivate the relay contacts that co
11. D ONLY Page 10 SPECIFICATIONS CONT D 3 4 WATER DRAIN WATER COOLED ONLY AIR COOLED WATER DRAIN 3 4 GAS POTABLE WATER INLET CORD SET Accessoires KSC 800 Cube stacking kit Dimensions HEIGHT 725 mm 28 1 2 WIDTH 760 mm 30 DEPTH 620 mm 24 1 2 WEIGHT 97 Kgs MV 800 MACHINE SPECIFICATIONS coment rics Model Cond unit Finish Comp HP 11 24 HR MV 800 AS Air 650 Basic Start Electric power cons Amps MV 800 AS 2300 55 2 1 2 1900 an Cubes per harvest 289 Full 578 Half With water at 15 Page 11 Page 11 SPECIFICATIONS MODULAR CUBER MV 1000 Ice making capacity AIR COOLED MODELS WATER COOLED MODELS AMBIENT TEMPERATURE ICE PRODUCED PER 24 HRS ICE PRODUCED PER 24 HRS AMBIENT TEMPERATURE Page 12 SPECIFICATIONS CONT D AIR COOLED 268418 737 5 CORD SET 3 4 GAS WATER INLET WATER OUTLET WATER COOLED Accessoires KSC 1000 Cube stacking kit Dimensions HEIGHT 800 mm 31 1 2 WIDTH 760 mm 30 DEPTH 620 mm 24 1 2 WEIGHT 104 Kgs 3 4 WATER INLET WATER COOLED ONLY 3 4 WATER DRAIN WATER COOLED ONLY MV 1000 MACHINE SPECIFICATIONS emm mmo ER Model Cond unit Finish Comp HP I 24 HR MV 1000 AS Air 700 MV 1000 AS 2500 60 0 2 Cubes per harvest 340 Full 680 Half With water at 15 C Page 13 FOR TH
12. E INSTALLER INTRODUCTION These instructions provide the specifications and the step by step procedures for the installation start up and operation for the SCOTSMAN Model MV 300 450 600 1000 Modular Cubers The Models MV 300 450 600 800 1000 Modular Cubers are quality designed engineering and constructed and are thoroughly tested icemaking systems providing the utmost in flexibility to fit the needs of a particular user INSTALLATION NOTE Allow 15 cm minimum space at sides and back for ventilation and utility connections STORAGE BIN The MV 300 stack on top of Scotsman bin model B 193 the MV 450 600 800 1000 stack onto SCOTSMAN bin model B 393 Refrigerant R 404 A Charge per nameplate rating STANDARD LEGS Furnished with storage bin Fourlegs screw into mounting sockets on cabinet base Provide 18 5 cm 7 minimum height including adjustable leveling foot Optional Kit Casters for B 393 KRB 550 are available on request IMPORTANT OPERATING REQUIREMENTS MINIMUM MAXIMUM Air Temperature 10 C 50 F 40 C 100 F Water Temperature 5 C 40 F 35 90 F Water Pressures 1 gauge 5 bar gauge Electrical Voltage Variations Voltage rating specified on nameplate 10 10 Extended periods of operation exceeding these limitations constitues misuse under the terms of Manufacturer s Limited Warranty resulting in a loss of warranty coverage SELECT LOCATION The first step in installing the eq
13. SERVICE MANUAL MV 450 MV 600 MV 500 MV 1000 R 404 A VERSION Electronic modular cubers SCOTSMAN MS 1000 77 REV 12 04 TABLE OF CONTENTS Table of contents Specifications FOR THE INSTALLER Introduction Storage bin Standard legs Important operating requirements Select location Storage bin Ice machine Stacking instructions Final check list FOR THE PLUNBER Conform to all applicable codes Water inlet Drains For the electrician Electrical connections START UP Start up cycle Freezing cycle Harvest cycle OPERATION Refrigeration during freeze Water system Refrigeration system during harvest Water system Control sequence Alarm conditions PC Board set up SERVICE SPECIFICATIONS Component Operating characteristics COMPONENT DESCRIPTION Component description WIRING DIAGRAM MV 300 450 600 800 1000 air water cooled MV 800 1000 air water cooled SERVICE DIAGNOSIS Service diagnosis MAINTENANCE amp CLEANING INSTRUCTION Icemaker Ice storage bin Cabinet erxterior Cleaning Icemaker Page 2 2 3 4 5 6 7 8 9 10 11 12 13 13 13 13 14 14 14 14 16 15 15 15 17 17 17 19 20 20 20 20 22 22 24 24 25 28 29 30 31 31 31 31 32 Page 3 SPECIFICATIONS MODULAR CUBER MV 300 Ice making capacity AIR COOLED MODELS WATER COOLED MODELS CD is 2 a gt a Ee cc C cc a rat
14. WER OPER FULL ALARM RE SET The fifth Red LED is ON STEADY TOO HI DISCHARGE PRESSURE gt 33 bar 460 PSI The fifth Red LED is BLINKING FAST RESET MODE After pushing the Reset Button of the Pressure Control first the fan motor starts up for 3 then back on the Start Up Cycle Mode The PC Board is also checking the maximum time of the freezing cycle that changes according to the operation of the fan motor during the freezing cycle room temperature Fan motor in ON OFF mode Max freezing cycle length equal to 30 Fan motor ON All the time Max freezing cycle length equal to 40 Whenever the machine remains in the Freezing Cycle for the Maximum time 30 or 40 minutes the PC Board moves the unit directly into the Harvest Cycle Page 23 PC BOARD SET UP The PC Board can be set up for e Manual Reset Mode Jump IN MANUAL RESET MODE To Restart the machine it is necessary to Push the RESET BUTTON AUTOMATIC RESET MODE The Automatic Reset Mode is activated only for the following ALARM CONDITIONS e WATER ERROR TOO HIGH CONDENSING TEMPERATURE e TOO LONG HARVEST CYCLE WATER ERROR The machine remains in OFF mode for 30 then it tries to re fill water YES Machine remains in operation NO Machine again in OFF mode for additio nal 30 TOO HI CONDENSING TEMPERATURE As soon as the temperature of the Condenser Sensor is 50 C the PC Board starts up first the fan motor for
15. arry the compressor line current The contactor is wired to receive power from the P C Board 4 Ice Thickness Sensor Located in the front upper right side off the evaporator the sensor is made with two metal reeds in which passes power at low voltage The two metal reeds which are individually insulated are set through a setting screw to maintain a minimum clearence from the evaporator 3 5 mm Once ice is formed into each mold and is thick enough to fill up that minimum clearance existing between the two sensor reeds and the evaporator the water that cascades over the ice has gradually approached to make contact between the two sensor reeds It is enough that this contact remains there for about 10 seconds that the P C Board receives the signals to put the ice machine on defrost 5 Magnetic Switch Located in the front of the evaporator plastic curtain this switch sends a pulse to the P C Board which switches the machine back in the freezing cycle 6 Hot Gas Solenoid Valve The Hot Gas Solenoid Valve functions only during the Harvest Cycle to divert the hot discharge gas from the Compressor bypassing the Condenden ser and thermostatic expansion valve for direct flowtothe Evaporator Platen Assembly to release ice cubes from the ice cube molds The Hot Gas Solenoid Valve is comprised of two parts the Body amp Plunger and the Coil assembles Installed in the discharge line of the Compressor the energized soleno
16. arts in the freezing cycle 8 Replace the evaporator cover deflector and front panel 9 Checkthe next batch of cubes to be sure all the cleaner is gone no sour taste CAUTION DO NOT use ice cubes produced from the cleaning solution Be sure none remains in the bin 10 Pour hot water into the storage bin melt the cubes and to also clean the bin drain
17. e at STORAGE BIN FULL 7 The machine remains in the freezing cycle with the ice that become thicker till the two metal plates of the Ice Thickness Sensor are covered by the water cascading through the front surface of the ice plate 8 When the Power is transmitted back to the PC Board continuously through the metal plates ofthe Ice Thickness Sensor for more then 6 the machine enters in the Pre Harvestor directly into the Harvest Cycle mode according to FAN MOTOR IN ON OFF MODE DURING THE PREVIOUS FREEZING CYCLE RISE UP THE CUT IN TEMPERATURE OF THE CONDENSER SENSOR TO 38 FAN MOTOR OFF AND EXTEND THE LENGTH OF FREEZING CYCLE BY 30 MORE THEN GO INTO HARVEST CYCLE FAN MOTOR ALWAYS IN OPERATION DURING THE PREVIOUS FREEZING CYCLE GO STRAIGHT TO THE HARVEST CYCLE 9 First freezing time will range between 15 and 20 minutes Longer time for temperature above 25 C and tune required when temperature are below 25 Average complete cycle time is about 22 min HARVEST CYCLE 1 During the harvest cycle the components in operation are Hot Gas valve e Water Drain Purge Valve e Water Pump for the first 40 Compressor and both e Machine Under Power Machine in Operation 2 QOOsecondsafterthe beginning of the Harvest Cycle the Water Inlet Solenoid Valve is energized for 10 seconds only in order to have a short flush of fresh water into the sump while the Water Pump is still in operation
18. e of the machine the air baffle as per instruction provided with it STACKING INSTALLATION To stack a second MV onto the present one first remove the top panel from the lower machine Add a bead of food grade silicone sealant to the top edges of the lower units freezing compart ment Lift the top machine onto the bottom Page 15 machine the use of a mechanical lift is recommended for this step Align the two machines cabinets and using the 2 screw from the top units hardware package fasten the two units together at the side cabinets Then make use of the Stacking Kit KSC 300 KSC 450 KSC 800 and KSC 1000 to be mounted as per fitting instructions included in their package respectively on MV 300 MV 450 600 MV 800 and MV 1000 located in the bottom for proper conveying of the ice cubes made by the top unit into the storage bin With food grade silicone perfectly seal the edge between the freezing compartment of the upper machine and of the bottom machine so to avoid any possible leak of water through the clearence in between FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES WATER INLET AIR COOLED MODELS The recommended water supply is cold water connected to the 3 4 gas male fitting at the back of the cabinet Install a hand valve near the machine to control the water supply Switch Plug receptacle Electrical plug Water inlet Shut off valve Water filter Water outlet line Bin water outlet
19. e storage bin The liquid refrigerant goes through the suction line into the heat exchanger where it boils off so that only refrigerant vapor is drawn into the suction tube of the compressor WATER SYSTEM During the harvest cycle the electric water drain valve is energized thereby opening the drain line All water remained in the reservoir at the end of freezing cycle is pumped out to the waste through the water solenoid and drain line during the first 40 seconds ofthe defrost cycle eliminating any possible build up and accumulation of minerals concentration and impurities in the water reservoir The water inlet valve is energized during the last 10 ofthe operation of the water pump so to rinse the water tank with new fresh water When the released ice cubes drop into the bin they open up for a fraction of a seconds the bottom end of plastic deflector Thisdeflector swinging motion is enough to reset the contact of the magnetic switch which via electronic control board deenergizes the water drain valve allowing the unit to initiate a new freezing cycle The harvest cycle lasts about 1 5 2 minutes CONTROL SEQUENCE At the start of the freezing cycle the contacts of the magnetic switch mechanically operated by the actuator plate of the deflector cover are closed thereby via electronic control board closing the circuit to the main contactor coil and consequently to the compressor and fan motors and 30 later
20. eceive any signal current from the Water Level Sensor within the first 3 minutes ofthe freezing cycle the PC Board trips OFF the operation of the machine with the switching ON of the Water Error LEDs 16 Start up delay PC Board Located in the back side of the unit it delays the start up of the entire machine by 90 so to avoid that compressor can start up w out be pre heated 17 Start up delay PC Board by pass switch Located in the back side of the machine allows to by pass the delay time controlled by the delay PC Board WARNING It is IMPERATIVE to by pass the delay time only when sure of proper warm up of compressor Page 28 MV 300 450 600 800 1000 WIRING DIAGRAM 220 V 50 Hz 1 ph brown light blue yellow green white black red orange lt O f0 25201O003j L1 99H L 1995 oO L3 imm p g mc 88 16 i alt we 22 fg HIHI HS E L 88 mm yr 5 HII ec TIS 88 Wm gt St C als e lt E O x Le 7 A Inputterminal board K Manual Automatic reset jumper B Compressor contactor L Water pump C Compressor M Water inlet valve D Ice sensor N Water drain purge valve E End defrosting switch O Hot gas valve F Water level sensor P Fan Motor only AIR cooled unit G Condenser temperature probe Q
21. id coil lifts the valve stem within the valve body to cause the hot discarge gasto be diverted when the ice Thickness sensor has signalled to the P C Board to start the Harvest Cycle 7 Condenser temperature sensor The condenser temperature sensor probe located in contact with the condenser tube coil detects the condenser temperature 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 65 C 150 F the current arriving to the micro processor is such to cause an immediate and total stop of the machine operation with the blinking of the Red LED 8 High Pressure Control The high Pressure Control a safety control is factory set to cut out at 30 bar and cut in at 22 bar The control functions as a precautionary device to shut OFF electrical power to Icemaker should a loss of water occur to the water cooled Condenser or a burnt out of the fan motor on air cooled versions The high Pressure Control is manual reset with reset button located on the Page 26 rear side ofthe machine and a monitoring light on the Front Console Panel 9 Water Regulating Valve Water Cooled Models The Water Regulating Valve fu
22. ing condenser Clean water distributor Adjust or replace Adjust check for leak recharge Page 31 MAINTENANCE amp CLEANING amp SANITATION INSTRUCTIONS A SCOTSMAN Ice System represent a sizable investment of time and money in any company s business In order to receive the best return for that investment in MUST receive periodic maintenance It is the USER S RESPONSIBILITY to see that preferable and less costly in the long run to avoid possible down time by keeping it clean adjusting it as needed and by replacing worn parts before they can cause failure The following is a list of recommended maintenance that will help keep your machine running with a minimum of problems Maintenance and Cleaning should be scheduled at MINIMUM twice per year while sanitation once per month ICEMAKER THE FOLLOWING MAINTENANCE SHOULD BE SCHEDULED AT LEAST TWO TIMES PER YEAR ON THIS ICEMAKER CALL YOUR AUTHORIZED SCOTSMAN SERVICE AGENCY 1 Check and clean or service any optional water treatment devices if any installed 2 Clean water strainer 3 Check that the cabinet is level in the side to side and front to back directions 4 Clean Sanitise the water system evaporator plate and sump assembly using a solution ot Ice Machine Cleaner Sanitiser Referto CLEANING Icemaker NOTE Cleaning Sanitising requirements vary according to local water conditions and individual user operation Continuous check of the clarit
23. ll decline as the machine freezes Ice Suction Amps Amps Pressure Freezing Compressor Compressor Beginning end Freeze Freeze Freeze MV 300 A MV 300 W MV 450 A MV 450 W MV 600 A MV 600 W MV 800 A MV 800 W MV 1000 A MV 1000 W 17 5 bar 16 5 bar 17 0 bar 16 2 bar 18 0 bar 16 5 bar 18 5 bar 16 5 bar 18 0 bar 16 5 bar 14 0 bar 16 5 bar 15 0 bar 16 0 bar 16 0 bar 16 0 bar 15 5 bar 16 5 bar 15 5 bar 16 5 bar Refrigerant charge R 404 A Air cooled 50 Hz 500 700 850 1300 Air cooled 60 Hz 450 600 700 XXXX 4 3 bar 4 3 bar 3 6 bar 3 8 bar 2 9 bar 2 9 bar 2 9 bar 2 9 bar 3 2 bar 3 2 bar 2 3 bar 2 4 bar 2 3 bar 2 5 bar 1 7 bar 1 7 bar 1 5 bar 1 7 bar 1 7 bar 1 9 bar 19 16 16 16 11 11 11 30 11 30 11 30 12 3 2 3 1 3 4 3 3 5 2 5 2 3 0 2 6 MV 1000 Water cooled 50 Hz 400 500 550 1000 1200 Water cooled 60 Hz 400 500 500 XXXX 1000 NOTE Always check nameplate on individual Refrigerant metering device Thermostatic expansion valve icemachine for special refrigerant charge before charging the refrigeration system Such refrigerant charge is the average charge for the MV Modular Cubers However it is important to check nameplate for each machine Page 25 COMPONENT DESCRIPTION 1 Front Console Panel Equipped with five LED plus a push button that when glow or blink are monitoring LED Nr 1 Electrical power supply LED Nr 2 Operation
24. ments or to a separate two poles disconnect box with opening to the contacts of about 3 millimeters The disconnect box shoulds be placed close to the selected ice maker location to be easily and prompt reached Undersized wiring or unproperly installed electrical circuit will result in major problems and malfunctions Voltage variations shoud not exceedten percent IMPORTANT All plumbing and electrical connections must be made by licensed plumbers and electricians this one must follow the electrical specifications printed on the ice maker nameplate NOTE All SCOTSMAN Cubers require a neutral wire and a solid earth ground wire to prevent possible severe Electrical Shock Injury to individuals or extensive damage to equipments FINAL CHECK LIST 1 Is the cabinet bin level 2 ls the cuber in a location where ambient temperatures are a minimum of 10 C 50 de grees F all year around and to not exceed a maximum of 40 C 100 F 3 Is there at least a 15 cm clearance behind and around the cabinet for all connections and for proper air circulation 4 Have all electrical and piping connections been made 5 Has the electrical power supply wiring been properly connected and the voltage tested and checked against the nameplate rating Has the unit properly grounded 6 Isthe water supply line shutoff valve installed and opened and has the inlet water supply pressure been checked to insure a minimum of 1 bar without e
25. ming at its maximum capacity it is necessary to perform periodic maintenance as outlined on the last pages of this manual Page 8 SPECIFICATIONS CONT D AIR COOLED 512 5 CORD SET 3 4 GAS WATER INLET WATER OUTLET WATER COOLED Accessoires KSC 450 Cube stacking kit Dimensions HEIGHT 575 mm 22 1 2 3 4 WATER INLET WATER COOLED ONLY WIDTH 760 mm 30 3 4 WATER DRAIN WATER COOLED ONLY DEPTH 620 mm 24 1 2 WEIGHT 77 Kgs MV 600 MACHINE SPECIFICATIONS owe mm o Cond unit Finish Comp HP I 24 HR MV 600 AS Air MV 600 AS 10 1600 38 4 2 Cubes per harvest 204 Full 408 Half With water at 15 Page 9 SPECIFICATIONS MODULAR CUBER MV 800 Ice making capacity AIR COOLED MODELS WATER COOLED MODELS Kg 2 T 5 a lt 32 5 2 ae 2 ec T Q 3 z E Q Z Q Z a B s LLI LLI O a O z 200 32 27 21 15 10 C WATER TEMPERATURE WATER TEMPERATURE NOTE To keep your Modular cuber performing at its maximum capacity it is necessary to perform periodic maintenance as outlined on the last pages of this manual WATER COOLED TUA TUA TUA 3 4 WATER INLET WATER COOLE
26. n of a solenoid waterinlet valve with a water level sensor is used to control the level of the water into the reservoir sump A pump running continuously after the first 30 of freezing cycle forces the water to the top of the evaporator where it is distributed through a water tube and then cascades down the evaporator surface by gravity As itflows accross the refrigerated evaporator some of the water will be chilled enough to change form turn to ice and stay frozen onto the evaporator cells Most of the water returns to the reservoir to be sucked back into the pump and repumped over the evaporator WAESERHVERTEILUNGSROHR WAZSERAEFLLUSSTVEMTIL WASBSERZLTLUSEVENTIL Page 21 HARVEST DEFROST CYCLE EVAPORATOR COMPRESSOR HEAT ub EXCHANGER CONDENSER LIQUID RECEIVER PRESSURE SWITCH FAN CONTROL REFRIGERATION SYSTEM SCHEMATIC REFRIGERATION SYSTEM DURING HARVEST The refrigeration system performs the harvest of ice by use of a hot gas bypass valve When the time comes to de ice the evaporators the hot gas valve is energized and the high temperatu re high pressure gas bypasses the condenser and is allowed directly into the evaporator The high pressure gas is cooled by the cold evaporator so it condenses into a liquid giving up its heat as it does so This heat warms the evaporator and the ice frozen onto the evaporator surface melts releasing the frozen cubes Ice then falls by gravity into th
27. nctions maintain a constant Compressor head pressure by regulating the amount of incoming water flow through the Condenser on water cooled models The valve operate through the refrigerant system high side pressure Rotating the adjusting screw located on top of the valve can INCREASE or DECREASE the water flow through the water cooled Condenser which inturn will DECREASE or INREASE the Compressor operating head pressure 10 Water Distribution System The Water Distribution System function to eventy supply water to all cells of the evaporator plate The water pump pumps water from the sump to the tee From there water is channeled through the vertical tygon tube to the water distributors above the evaporator plate and from the holes in the distributor tube water flows to the cells on one side of the evaporator plate Gravity flow returns the unfrozen excess portion of water to the sump reservoir for recirculation 11 Water Drain Solenoid Valve The Water Outlet Solenoid Valve functions in conjunction with the water pump to flush out the sump assembly at the beginning first 40 of every harvest cycle This action cleans up and rinses the sump during each harvest cycle pre venting dangerous water minerales concentration 12 Thermostatic Expansion Valve The Thermostatic Expansion Valve regulates the flow of refrigerant to the evaporator and reduces pressure of liquid refrigerant from condensing pressure to evaporating pre
28. ntrols the hot gas and water drain valve which get deenergized allowing the unit to start a new freezing cycle When the ice bin is full of ice the last batch of ice cubes released from the evaporator accumulates to keep the bottom end of the plastic deflector in open position with the magnetic switch contacts open for longer than 30 the entire unit stops with the glowing of the corresponding LED The machine will restart when the ice deflector will be back in its normal vertical position provided that 3 are elapsed from unit stop If not the machine will delay its restart till 3 are elapsed with the blinking of the green LED ALARM CONDITIONS BIN POWER OPER FULL ALARM Both the last two Red LED are ON STEADY Condenser Sensor OUT OF ORDER Both the lasttwo Red LED are BLINKING SLOW WATER ERROR Water level inside the water sump too low after 3 from the activation of the Water Inlet Valve Both the last two Red LED are BLINKING FAST RESET MODE Charging water through the Water inlet Solenoid Valve after the tripping OFF on WATER ERROR BIN POWER OPER FULL ALARM RE SET The fourth Red LED is ON STEADY Harvest Cycle longer then 3 30 The fourth Red LED is BLINKING SLOW TOO HI CONDENSING TEMPERATURE The condenser sensor detected a temperature gt 65 C The fourth Red LED is BLINKING FAST RESET MODE Condenser Sensor lt 50 C Fan motor in operation for 3 then back on Start Up Cycle Mode BIN PO
29. ssure 13 Water pump The water pump primes the water from the sump to the water distributor tube and through the distributing holes it cascades down onto the evaporator cells by gravity so to be frozen into clear ice cubes The water pump remains off during the first 30 seconds of the freezing cycle to avoid any cavitation problem while it s kept running during the first 40 of defrost harvest cycle to drain out purge the remaining water from the sump reach in mineral salts 14 Water inlet solenoid valve 3 4 male fitting The Water Inlet Solenoid valve is energised by the P C Board during the beginning ofthe freezing cycle till the water reaches the maximum level into the sump controlled by the Water Level Sensor After 3 minutes from the start up of the freezing cycle the Water Inlet Valve is energised again for a short period to re fill the sump with water till Page 27 again to the max level so to minimise any possibility of slush ice formation A flow control fitted into its outlet port reduces the pressure of the water flow 15 Water level sensor The Water Level Sensor located on the upper rightside ofthe water sump works in conjunction with the P C Board in order to control the water level atbeginning ofthe freezing cycle by receiving a low power current passing through the water When the current reaches the PC Board the water inlet solenoid valve is de energised In case the PC Board doesn t r
30. st for 40 seconds NOTE The models MV 800 1000 are equipped with a compressor crankcase heater and a Startup Delay PC Board setup at 90 minutes During the first 90 minutes only the compressor crankcase heater is energized warning up the compressor 3 During the Start Up cycle the components in operation are Hot gas valve Water Drain Valve e Water Pump FREEZING CYCLE 1 After the Start Up cycle the machine enters directly into the Freezing cycle with the following components energized Water Inlet valve Compressor Fan motor in continuous operation for the first 3 minutes 2 The LED energized are e Machine under power Machine in operation steady 3 Water is coming into the water through the Water Inlet Solenoid Valve till the water reservoir if filled up to the maximum level controlled by a Water Level Sensor 4 30seconds later the Water Pump starts up 5 After few minutes 3 5 from the start up of the freezing cycle the Water Inlet Solenoid Val veis activated again for few seconds to re fill the water reservoir up to the maximum level so to reduce any possibility of slush ice formation 6 Inthe meantime the condenser sensor starts to transmit the current to the PC Board keeping in operation the Fan Motor in ON OFF mode or continuously according to the condenser tempe rature NOTE Do not remove the evaporator deflector cover as it will cause the switching off ofthe machin
31. tely In case of sxternal contact flush with water KEEP OUT OF THEREACH OF CHILDREN 1 Empty bin of ice 2 Remove front panel 3 Waittill the end of the defrost harvest cycle then push the RESET BUTTON for 6 8 seconds The machine should stop with the blinking of the Yellow LED slow blink 4 Pour on MV 300 150 cc MV 450 600 250 cc MV 800 1000 350 cc of Scotsman Ice Machine Clea ner directly into the reservoir then push again the RESET BUTTON for a while The water pump starts to operate with the fast blinking of the Yellow LED while the water inlet valve will be energized till the fill up of the water sump 5 After15 minutes push the RESET BUTTON for a while The P C Board put the machine in automatic rinsing mode with the special blinking blink twice and repeat of the Yellow LED Page 32 NOTE RINSING mode consists of a energize the water drain valve and the water pump for 40 seconds to empty the reservoir b deenergize the water drain valve and the water pump for 1 minute C energize the water inlet valve till the fill up of the water sump d energize the water pump for 1 5 minutes The above sequence is repeted 7 times so to be sure to have removed any possible trace of Ice Machine Cleaner 6 Atthe end of the 7th Rinsing cycle the P C Board stops the operation of the machine with the blinking slow of the Yellow LED 7 Pushing the RESET BUTTON for 6 8 seconds the machine rest
32. termine the cause of a problem Warning Red LED ON No warning LED LIGHT ON Bin full Yellow LED ON Machine runs compressor does not Machine runs makes ice does not try to harvest Machine runs makes and harvests ice but very slowly Low ice capacity Machine makes irregular ice See page 20 P C Board inoperative No power to unit Bin Full of ice Magnetic switch inoperative P C Board compressor relay open Compressor contactor open Compressor relay open Compressor winding open Ice thickness control open Too soft water Built in relay on P C Board open Low refrigerant charge High discharge pressure due to not condensable or overcharge Inefficient compressor Condenser dirty Low water flow Water cooled High air temperature air cooled Plugged water distributor TXV supertheat wrong Refrigerant charge low See page 20 Remove board and check Check electrical source Nome Check and replace Test and replace Test and replace Test and replace Test and replace Check sensor fingers if are not covered with scale sediment Water electrical conductivity must be higher then 20 us Machine can t run with demineralized water Check and replace P C Board Check system for correct refr charge Check for leak weight in charge Evacuate and weigh in charge Replace Clean Check and repair Check temperature of air enter
33. uipment is to select the location The purchaser of the unit will have a desired spot in mind check out that spot to insure that it is indoors in an environmentthat does not exceed the air and water temperature limitations for the equipment thatthe necessary utilities are available including the correct voltage electrical power thatthere be space aroundthe installed machine for service 15 cm minimum left right and rear for air cooled models STORAGE BIN The Scotsman bins for these units are the B 193 and B 393 Other bins may be available with bin tops to vary the storage capacity Lay the bin on its back using cardboard from the carton to support it screw in the legs Stand the bin upright and correct any possible small tears in the machine mounting gasket with food grade silicone sealant ICE MACHINE The use of a mechanical lift is recommended for lifting the uncrated icemaker onto the bin Remove front top and sides panels Place the unit directly onto the bin align it with the backofthe bin Locate the hardware package take out two mounting screws and use them to secure the Icemaker to the two sides of the bin See illustration below Remove all shipping material as well as the masking tapes from the ice deflector evaporator cover Page 14 Remove first the ice deflector evaporator cover then the masking tape from the ice thickness sensor AIR BAFFLE Install on the back sid
34. xceeding a maximum of 5 bar Page 16 7 Have the compressor holddown bolts been checked to be sure the compressor is snug on the mounting pads 8 Check all refrigerant lines and conduit lines to gard against vibration and possible failure 9 Has the cuber and the bin been wiped clean with clean damp cloths 10 Has the owner user been given the User Manual and instructed on how to operate the icemaker and the importance of periodic maintenance 11 Has the owner user been given the name and telephone number of the Authorized SCOTSMAN Distributor or Service Agency serving him 12 Has the Manufacturer s Registration Card been properly filled out Check for correct Model and Serial Numbers from nameplate then mail the completed card to the Manufactured TYPICAL STACKING INSTALLATION KIT STACKING KSC 300 TO STACK 2 MV 300 s KIT STACKING KSC 450 TO STACK 2 MV 450 600 s KIT STACKING KSC 800 TO STACK 2 MV 800 s KIT STACKING KSC 1000 TO STACK 2 MV 1000 s Page 17 START UP START UP CYCLE 1 Open the water tap valve and switch ON the power on the electrical supply line 2 Themodels MV 300 450 600 enter in the Start Up mode with the PC Board energized as well as the Green LED of the machine under power while the models MV 800 1000 enter in 90 minutes delay time controlled by a special Start up Delay PC Board BIN FULL ALARM RE SET The Green LED of machine in operation is energized too blinking fa
35. y of ice cubes and visual inspection of the water system parts evaporator plates and the sump assembly before and after cleaning will indi cate frequency and procedure to be followed in local areas 5 Check and tighten all bolts and screws 6 Checkforwaterleaks and make corrections 7 Check the bin control to test shut off Holding the evaporator deflector in open Position for more that 30 shold cause the ice maker to shut off Once the evaporator deflector is released in its closed position the ice maker will restart 8 Checkcube size adjust if required through setting screw of ice thickness control sensor 9 With unit out of operation clean the condenser using vacuum cleaner wisk broom or brush Instruct customer to clean condenser frequently DO NOT USE A WIRE BRUSH ICE STORAGE BIN The interior liner of the bin is in contact with a food product ice and should be cleaned and sanitised regularly Once a week sanitise it with a commercial food grade sanitiser compling with the manufacturer dilution CABINET EXTERIOR Wipe clean unit and bin cabinet exterior with a clean cloth or disposable paper wipers soaked in warm water with mild detergent solution CLEANING Ice maker WARNING Ice Machine Cleaner contains Phosphoric and Hydroxyacetic acids These compounds are corrosive and may cause burns If swallowed DO NOT indu ce vomiting Give large amounts of water or milk Call physician immedia
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