MV 306 MV 426 MV 456 MV 606 MV 806 MV 1006
Contents
1. WATER COOLED Water drain 220 mm water inlet 3 4 GAS P otable ord set qx Dimensions HEIGHT 575 mm 22 1 2 WIDTH 760 mm 30 DEPTH 620 mm 24 1 2 ien 8 WEIGHT 77 Kgs MV 606 MACHINE SPECIFICATIONS Model Cond unit Finish Comp HP 4 606 AS 3 440 MV 606 WS Water Stainless Steel 1 3 2750 Model amps amps watts Corus Fuse MV 606 AS 6 2 1300 28 2 MV 606 WS 220 240 50 1 52 32 1050 23 3x1 5 mm 16 Cubes per harvest 234 With water at 15 C Full 468 Half Page 11 SPECIFICATIONS MODULAR CUBER MV 806 l ninm Hil Wh Hl Hitt ice making capacity Kg 445 425 405 385 365 345 325 AIR COOLED MODELS 305 285 ICE PRODUCED PER 24 HRS 265 245 225 32 Se 21 15 10 WATER TEMPERATURE 21 32 38 AMBIENT TEMPERATURE ICE PRODUCED PER 24 HRS Kg 390 370 WATER COOLED MODELS 3 a o 3 3 o 2 270 32 21 15 WATER TEMPE2. Cubes per harvest 168 Full 336 Half With water at 15 C Page 5 SPECIFICATIONS MODULAR CUBER MV 426 VV var TE x D m x m v ice making capacity AIR COOLED MODELS Kg 240 220 21 200 180 32 160 140 38 ICE PRODUCED PER 24 HRS 120 100 32 27 21 15 10 C WATER TEMPERATURE AMBIENT TEMPERATURE Kg 260 240 220 200 WATER COOLED MODELS ICE PRODUCED PER 24 HRS 180 160 140 N 32 27 21 15 WATER TEMPERATURE 21 32 38 AMBIENT TEMPERATURE NOTE To keep your Modular cuber performing at its maximum capacity itis necessary to perform periodic maintenance as outlined on the last pages of this manual Page 6 560 mm 22 660 mm 26 389 mm 15 5 16 SPECIFICATIONS CONT D 614 mm 24 3 16 25 mm 1 p e 21 mm 13 16 a n ni 75 2 mm 2 15 16 E 43 5 mm 1 11 16 in M Accessoires Dimensions HEIGHT 660 mm 26 WIDTH 560 mm 22 DEPTH 614 mm 24 3 16 WEIGHT 68 Kgs MV 426 MACHINE SPECIFICATIONS Water req Model Cond unit Finish Comp HP 24 HR MV 426 AS Air 300 MV 426 WS Water Stainless Steel 7 8 2400 Model 2 amps 1 watts of wires us
3. Dimensions 9 ts 1 HEIGHT 575 mm 22 1 2 iis WIDTH 760 mm 30 OPER DEPTH 620 mm 24 1 2 tae WEIGHT 77 Kgs MV 456 MACHINE SPECIFICATIONS Model Cond unit Finish Comp HP ae MV 456 AS Air 410 MV 456 WS Water Stainless Steel 7 8 2400 Model bes amps ns watts Mir ur d N of wires pus MV 456 AS 4 5 1000 23 5 Mv456 ws 220 240 50 1 29 850 19 5 LN Cubes per harvest 234 Full 468 Half With water at 15 C Page 9 SPECIFICATIONS MODULAR CUBER MV 606 VA AXI 7 m x x m x x D x I m ame m ae ice making capacity ICE PRODUCED PER 24 HRS AIR COOLED MODELS WATER COOLED MODELS Kg C Kg 335 335 10 315 315 e 295 21 A 2 lt lt 275 a tc Lu o E a D 275 21 9 2 a Lr 235 Z Z Lu CC 255 32 a 32 M 235 195 38 175 ee 215 32 21 15 10 C 32 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 Page 10 SPECIFICATIONS CONT D AIR COOLED 575 508 5
4. MV 426 AS 4 8 1050 23 Mv426 Ws 220 240 50 1 43 29 850 19 5 BIS lB Cubes per harvest 204 Full 408 Half With water at 15 C Page 7 SPECIFICATIONS MODULAR CUBER MV 456 V 4 li E Dp Tam ice making capacity Kg 240 AIR COOLED MODELS 220 200 180 160 ICE PRODUCED PER 24 HRS 140 WATER TEMPERATURE 21 32 38 AMBIENT TEMPERATURE ICE PRODUCED PER 24 HRS Kg 255 235 215 195 175 155 135 WATER COOLED MODELS WATER TEMPERATURE 21 32 38 32 21 15 10 AMBIENT 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 8 SPECIFICATIONS CONT D 575 508 5 AIR COOL 15 WATER COOLED 75 5 Water drain 220 mm Potable water inlet 3 4 GAS set Qe f e
5. 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 rear side of the machine and a monitoring light on the Front Console Panel 9 Water Regulating Valve Water Cooled Models The Water Regulating Valve functions 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
6. 3 4 GAS DEPTH 620 mm 24 1 2 Water cooled outlet 3 4 GAS WEIGHT 104 Kgs MV 1006 MACHINE SPECIFICATIONS Water req Model Cond unit Finish Comp HP I 24 HR MV 1006 AS Air Stainless Steel 2 600 MV 1006 WS Water 3800 Modo Bese ams Sat wate nones MV 1006 AS 10 5 33 1900 38 5 MV 1006 WS 230 50 1 1600 3 2 5 16 MV 1006 AS _ 3 5 1900 41 3 2 MV 1006 WS 380 400 50 3 3 3 24 1600 37 5x1 5 mm 10 Cubes per harvest 342 Full 684 Half With water at 15 C Page 15 FOR THE 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 306 426 456 606 1006 Modular Cubers The Models MV 306 426 456 606 806 1006 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 306 426 stack on top of Scotsman bin model B 193 the MV 456 606 806 1006 stack onto SCOTSMAN bin model B 393 Refrigerant R 404A Charge per nameplate rating STANDARD LEGS Furnished with storage bin Four legs screw into mounting sockets on cabinet base Provide 18 5 cm 7 minimum height including adjus
7. Ice storage bin 34 Cabinet exterior 34 Cleaning Icemaker 34 35 Page 3 SPECIFICATIONS MODULAR CUBER MV 306 VV 4 355 I ice making capacity AIR COOLED MODELS WATER COOLED MODELS Kg C Kg C 200 160 180 150 e 160 e 140 10 D 10 2 5 E E oc a 140 21 130 21 P 2 5 n 2 1 i 22 120 9 32 38 a m a m 100 38 2 110 2 100 60 90 32 27 21 15 10 C 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 Page 4 560 mm 22 575 mm 22 10 16 389 1mm 15 5 16 330 mm 13 SPECIFICATIONS CONT D 614 mm 24 3 16 508 5 mm 20 263 4 mm 10 6 16 5 10 716 75 2 mm 2 15 16 43 5 mm 1 1 16 S 178 mm 7 E 21 mm 13 16 N Accessoires Dimensions HEIGHT 575 mm 22 1 2 WIDTH 560 mm 22 DEPTH 614 mm 24 3 16 WEIGHT 53 Kgs MV 306 MACHINE SPECIFICATIONS Model Cond unit Finish Comp HP 306 5 Air i 200 MV 306 WS Water Stainless Steel 3 4 2000 Model am amps RH watts Euri dp d N of wires gt MV 306 AS 3 8 780 17 5 MV 306 WS 220 240 50 1 3 3 20 610 13 5 3x1 5 mm 10
8. J1 for factory use only and the second J2 for the selection between one water fill up or continuous water fill up 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 water fill up atbeginning freeze mode When J2is open WATER PUMP SERIAL CONNECTOR MAGNETIC SWITCH the PC Boardis set up for continuous water filling 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 carry the compressor line current The contactor is wired to receive power from the P C Board Page 27 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 thi
9. 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 OPER FULL ALARM Both the last two Red LED are ON STEADY Condenser Sensor OUT OF ORDER Both the last two 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 FULL ALARM RE SET The fourth Red LED is ON STEADY Harvest Cycle longer then 3 30 Thefourth Red LED is BLINKING SLOW TOO HI CONDENSING TEMPERATURE The condenser sensor detected a temperature 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 2 FULL ALARM RE SET The fifth Red LED is ON STEADY TOO HI DISCHARGE PRESSURE gt 33 bar 460 PSI The f
10. top of the evaporator where it is distributed through a WATER SPRAY TUBE E WATER PUMP water tube and then cascades down the evaporator surface by gravity As it flows 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 PURGE VALVE WATER LEVEL SENSOR Page 22 HARVEST DEFROST CYCLE EVAPORATOR COMPRESSOR PRESSURE SWITCH DRIER FAN CONTROL Li REFRIGERATION SYSTEM SCHEMATIC HEAT ni EXCHANGER CONDENSER JI QUID RECEIVER 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 into the storage bin pushed out by means of the harvest assist solenoid The liquid refrigerant goes through the suction line into the he
11. 33 2 9 1 6 12 3 7 3 0 MV 1006 W 400 50 3 16 5 16 5 33 3 2 1 8 13 5 3 6 2 8 Refrigerant charge R 404 A gr MODEL MV 306 MV 426 MV 456 MV 606 MV 806 MV 1006 Air cooled 500 800 700 850 1300 1600 Water cooled 450 600 500 550 650 1200 Refrigerant metering device Thermostatic expansion valve NOTE Always check nameplate on individual icemachine for special refrigerant charge before charging the refrigeration system Suchrefrigerantcharge is the average charge for the MVP Modular Cubers However it is important to check nameplate for each machine 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 LED Nr 3 Bin full Washing LED Nr 4 Alarm Page 26 LED Nr 5 Alarm high pressure BUTTON B Reset Washing MV SERIES ER PC BOARD MOTORS POWER IN AND SAFETY PRESSURE CONTROLS ICE THICKNESS CONNECTOR SENSOR 2 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 Itconsists oftwo separated printed circuits one at high and the other at low voltage integrated with afuse offour connectors forthe sensors switches condenser sensor BLACK magnetic switch GREEN ice thickness sensor RED water level sensor BLUE of two jumpers one
12. ELINE ONLY 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 still decline as the machine freezes ice Disch Disch Hi Suction Suction Amps Amps MODEL Pressure Pressure Pressure Pressure Pressure Cycle time Compressor Compressor Freeze max Freeze min CUT OUT Beginning Freeze minutes Beginning end bar bar bar Freeze bar bar Freeze Freeze MV 306 A 230 50 1 17 5 15 5 30 5 4 3 2 17 3 8 3 MV 306 W 230 50 1 17 17 30 4 9 3 2 17 5 3 3 2 9 MV 426 A 230 50 1 18 15 6 30 5 1 3 1 13 4 8 3 8 MV 426 W 230 50 1 17 16 6 30 4 6 3 1 13 6 4 3 3 6 MV 456 A 230 50 1 17 5 15 5 33 3 5 2 0 15 4 7 3 6 MV 456 W 230 50 1 16 5 16 5 33 3 5 2 2 16 4 2 3 4 MV 606 A 230 50 1 18 16 33 2 7 1 5 13 6 2 4 8 MV 606 W 230 50 1 16 5 16 5 33 3 2 1 7 13 5 8 4 5 MV 806 A 230 50 1 18 5 16 5 33 2 0 1 8 12 5 8 6 6 4 MV 806 W 230 50 1 16 5 16 5 33 3 5 1 9 14 5 9 0 6 7 MV 1006 A 400 50 3 16 14
13. Inlet valve Compressor Fan motor in continuous operation for the first 3 minutes 2 The LED energized are Machine under power Machine in operation steady Page 18 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 ve is 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 of the machine 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 Harvest or directly into the Harvest Cycle mode according to FAN MOTOR IN ON OFF MODE DURING
14. MODULAR CUBER MV 1006 ninm z ad ome 1 mad le Pa mal M m ice making capacity AIR COOLED MODELS Kg C Kg 475 425 WATER COOLED MODELS 21 32 38 32 345 335 ICE PRODUCED PER 24 HRS AMBIENT TEMPERATURE ICE PRODUCED PER 24 HRS 315 325 10 455 405 435 21 415 385 395 375 365 355 38 295 275 305 32 21 15 10 C 3 WATER TEMPERATURE m 21 15 10 WATER TEMPERATURE AMBIENT TEMPERATURE NOTE To keep your Modular cuber performing at its maximum capacity itis necessary to perform periodic maintenance as outlined on the last pages of this manual Page 14 SPECIFICATIONS CONT D AIR COOLED 0 1 Potable water inlet 3 4 GAS WATER COOLED 9L BEER Bele ES all 1 xf Dimensions HEIGHT 725 mm 28 1 2 115 WIDTH 760 mm 30 Water cooled inlet
15. RATURE AMBIENT 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 12 SPECIFICATIONS CONT D 725 WATER COOLED 668 5 263 5 43 5 R COOLED 75 jg Water drain 020 mm Potable water inlet 3 4 GAS set o BB D e Em E E S Hl o i Dimensions HEIGHT 725 mm 28 1 2 WIDTH 760 mm 30 Water cooled inlet 3 4 GAS DEPTH 620 mm 24 1 2 Water cooled outlet 3 4 GAS WEIGHT 97 Kgs MV 806 MACHINE SPECIFICATIONS Model Cond unit Finish Comp HP MV 806 AS Air 580 MV 806 WS Water Stainless Steel 1 5 3900 Model 4 amps une watts EM N of wires Pu i MV 806 AS 9 0 1850 40 1 2 MV 806 WS 220 240 50 1 8 0 31 1450 33 4 3x1 5 mm 16 Cubes per harvest 342 Full 684 Half With water at 15 C Page 13 SPECIFICATIONS
16. SERVICE MANUAL MV 306 MV 426 MV 456 MV 606 MV 806 MV 1006 Electronic modular cubers SCOTSMAN EUROPE FRIMONT SPA Via Puccini 22 20010 Pogliano M se Milano Italy Tel 39 02 93960 1 Aut Sel Telefax 39 02 93550500 Direct Line to Service amp Parts Phone 39 02 93960350 Fax 39 02 93540449 0 M Website www scotsman ice com 90 E Mail scotsman europe frimont it Scotsman MS 1000 77 REV 02 2010 TABLE OF CONTENTS Page 2 Table of contents 2 Specifications 3 4 5 6 7 8 9 10 11 12 13 14 FOR THE INSTALLER Introduction 15 Storage bin 15 Standard legs 15 Important operating requirements 15 Select location 16 Storage bin 16 Ice machine 16 Final check list 17 FOR THE PLUMBER Conform to all applicable codes Water inlet 16 Drains 17 For the electrician Electrical connections 17 START UP Start up cycle 18 Freezing cycle 18 Harvest cycle 18 OPERATION Refrigeration during freeze 20 Water system during freeze 21 Refrigeration system during harvest 22 Water system during harvest 22 Control sequence 22 Alarm conditions 23 PC Board set up 24 SERVICE SPECIFICATIONS Component 25 Operating characteristics 25 COMPONENT DESCRIPTION Component description 26 WIRING DIAGRAM MV 306 air water cooled 30 MV 426 456 606 806 air water cooled 31 MV 1006 air water cooled 32 SERVICE DIAGNOSIS Service diagnosis 33 MAINTENANCE amp CLEANING INSTRUCTION Icemaker 34
17. THE PREVIOUS FREEZING CYCLE RISE UP THE CUT IN TEMPERATURE OF THE CONDENSER SENSOR TO 38 C 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 13 and 17 minutes Longer time for temperature above 25 C and shorter time required when temperature are below 25 C Average complete cycle time is about 15 min HARVEST CYCLE 1 During the harvest cycle the components in operation are Hot Gas valve Harvest assist solenoid pusher Water Drain Purge Valve Water Pump for the first 6 every cycle and for all harvest time every 6 cycles Compressor Page 19 and both Machine Under Power Machine in Operation 2 30seconds afterthe beginning ofthe 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 3 The Fan Motor remains in OFF mode unless the Condenser Sensor probe rise up to more then 38 C 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 fora 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 requir
18. at 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 Most of the water remained in the reservoir atthe end of freezing cycle is pumped out to the waste through the water solenoid and drain line during the first part of the defrost cycle eliminating any possible build up and accumulation of minerals concentration and impurities in the water reservoir When the released ice cubes drop into the bin they open up for a while the bottom end of plastic deflector This deflector swinging motion is enough to reset the contact of the magnetic switch which via electronic control board moves back the unit to a new freezing cycle The harvest cycle lasts about 1 1 5 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 Page 23 consequently to the compressor and fan motors and 30 later 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 energise
19. ck 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 1 8 indentation S 1 8 3 16 bridge Too Big Just Right Too Small Ice Bridge Thickness Measurement 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 fromthe Compressor bypassing the Condenden ser and thermostatic expansion valve for direct flow to the 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 andthe Coil assembles Installed the discharge line of the Compressor the energized solenoid coil lifts the valve stem within the valve body to cause the hot discarge gas to 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
20. d 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 the hot gas valve the water drain valve and the harvest assist solenoid 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 get released from their molds In the mean time the harvest assist solenoidis also energized pushing out the ice plate 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 controls the hot gas harvest assist solenoid and water drain valve which get deenergized allowing the unit to start a new freezing cycle
21. e freezing cycle mode within few seconds going through a 3 minutes 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 OPERATION Page 20 FREEZE CYCLE EVAPORATOR COMPRESSOR THERMOSTATIC EXP VALVE HOT GAS VALVE CLOSED PRESSURE SWITCH FAN CONTROL HEAT ni EXCHANGER CONDENSER LIQUID RECEIVER 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 controlled by the amount of water flowing 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 pre
22. ed thread down or out the adjusting screw as shown on below illustration ice bridge must be approx 2 3 mm Adjustment Screw Ice Thickness Sensor Adjustment This screw position determines the distance between the sensor reeds and the egg crate evaporator thus keeping the ice cube at a proper thickness 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 minutes NOTE To assure a correct operation of the machine the water must have a minimum electrical 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 th
23. 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 requirements 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 exceed ten pe
24. he 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 START UP START UP CYCLE 1 Open the water tap valve and switch ON the power on the electrical supply line 2 The models MV 306 426 456 606 806 enter in the Start Up mode with the PC Board energized as well as the Green LED of the machine under power while the model MV 1006 enter in 90 minutes delay time controlled by a special Start up Delay PC Board BIN Hl FULL ALARM RE SET The Green LED of machine in operation is energized too blinking fast for 40 seconds NOTE The model MV 1006 is equipped with a compressor crankcase heater and a Start up Delay PC Board set up 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 Water Pump Harvest assist solenoid pusher FREEZING CYCLE 1 Afterthe Start Up cycle the machine enters directly into the Freezing cycle with the following components energized Water
25. he 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 restarts in the freezing cycle 8 Replace the evaporator cover deflector and front panel 9 Check the 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
26. ient compressor Condenser dirty Low water flow Water cooled High air temperature air cooled Evacuate and weigh in charge Replace Clean Check and repair Check temperature of air entering condenser Machine makes irregular ice Plugged water distributor TXV supertheat wrong Refrigerant charge low Clean water distributor Adjust or replace Adjust check for leak recharge Page 34 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
27. ifth Red LED is BLINKING FAST RESET MODE After pushing the Reset Button of the Pressure Control the fan motor starts up first for 3 then the machine enters 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 Max freezing cycle length ON OFF mode equal to 30 Fan motor ON Max freezing cycle length All the time 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 24 PC BOARD SET UP The PC Board can be set up for Manual reset mode and water purge out for a short time only at beginning of every harvest cycle Suggested for soft water JUMP IN J2 Automatic reset JUMP OUT Manual reset mode and water purge out for a short time only at beginning of every harvest cycle plus a full water purge every six cycles Recommended for normal hard water JUMP IN TWO contacts of J1 Page 25 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 ambient and 15 C water USE THESE NUMBERS AS A GUID
28. in the side to side and front to back directions 4 Clean Sanitisethe 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 clarity 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 Check for water leaks and make corrections 7 Check the bin control to test shut off Holdingthe 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 Check cube 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 isin 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 ex
29. ing cycle to avoid any cavitation problem while it s kept running during the first 10 of defrost harvest cycle to drain out purge the remaining water from the sump reach in mineral salts Page 29 14 Water inlet solenoid valve 3 4 male fitting The Water Inlet Solenoid valve is energised by the P C Board during the beginning of the 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 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 front of the water sump works in conjunction with the P C Board in order to control the water level at beginning of the freezing cycle by receiving alow 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 receive any signal current from the Water Level Sensor within the first 3 minutes of the 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 only for MV 1006 Located in the back side of the unit i
30. ning the cause of a particular type of malfunction as well as the recommended repair It is not intended to be an exclusive list Reference to other portions of this manual inclusing wiring diagrams installation and operation are recommended to better determine the cause of a problem SYMPTOM POSSIBLE CAUSE CORRECTION Warning Red LED ON No warning LED LIGHT ON See page 20 P C Board inoperative No power to unit See page 20 Remove board and check Check electrical source Bin full Yellow LED ON Bin Full of ice Magnetic switch inoperative Nome Check and replace Machine runs compressor does not P C Board compressor relay open Compressor contactor open Compressor relay open Compressor winding open Test and replace Test and replace Test and replace Test and replace Machine runs makes ice does not try to harvest Ice thickness control open Too soft water Built in relay on P C Board open 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 Machine runs makes and harvests ice but very slowly Low refrigerant charge Check system for correct refr charge Check for leak weight in charge Low ice capacity High discharge pressure due to not condensable or overcharge Ineffic
31. only AIR cooled unit Fan Motor only WATER cooled unit Compressor relay Start condenser Run condenser Page 32 MV 1006 WIRING 400 V 50 Hz DIAGRAM 3 ph brown light blue yellow green white black red orange violet lt 0 lt POMPA COMPRESSORE SBRINAMENTO SENS SENS MICRO SONDA GHIACCIO H20 SBRINAM COND DISPLAY VENTILATORI g LINEA PRESS MAX ASSO 86606 400V 50 Hz 3N AAA A A Input terminal board K B Compressor remote control switch L C Compressor 7 D Ice sensor E End defrosting switch SP F Water level sensor P1 G Condenser temperature probe P2 H Led card R Electronic card 5 J Max pressure switch T Automatic reset switch Water pump Water inlet valve Water discharge valve Hot gas valve Solenoid harv assist Fan Motor 1 only AIR cooled unit Fan Motor 2 only WATER cooled unit Cranckase heater Start delay by pass switch Start delay electronic board Page 33 SERVICE DIAGNOSIS The table below is intended as a quick reference to aid the Service Agentin determi
32. rcent 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 Is 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 exceeding a maximum of 5 bar 7 Have the compressor holddown bolts been checked to be sure the compressor is snug onthe mounting pads 8 Checkallrefrigerantlines and conduitlines 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 t
33. rd PC Board Hi pressure switch c rIommoo VOZErA om ooo pu CM Manual Automatic reset jumper Water pump Water inlet valve Water drain purge valve Hot gas valve Fan Motor only AIR cooled unit Fan Motor only WATER cooled unit Compressor relay Start capacitor Run capacitor Page 31 MV 426 456 606 806 WIRING DIAGRAM 220 V 50 Hz 1 ph o OOO POMPA brown light blue yellow green white black red orange violet o m ooocs3 SENS SENS MICRO SONDA GHIACCID H20 SBRINAM COND t S E M Soo e 59 Tg 4 E m B um e a gt zO s 5 9 Petes 8 rt one 2 P ls a ar 70 eu x79 x 9 E 8 Input terminal board L Water pump Compressor remote control switch M Water inlet valve A c Trommoou LI Compressor Ice sensor End defrosting switch Water level sensor Condenser temperature probe Led card Electronic card Max pressure switch Automatic reset switch N SP P1 P2 RC cs CM Water discharge valve Hot gas valve Solenoid harv assist Fan Motor
34. ssure 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 This is 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 21 FREEZE CYCLE WATER SYSTEM Acombination of a solenoid water inlet 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
35. t 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 only for MV 1006 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 18 Harvest Assist Solenoid Not used on MV 306 Operated by the controller in parallel with the hot gas valve Cycles on and off at the beginning of arestart Energized throughout the harvest cycle Line voltage coil Page 30 MV 306 WIRING DIAGRAM 220 V 50 Hz 1 ph brown light blue yellow green white black red lt orange POMPA SENS SENS MIRO SONDA COMPRESSORE SBRINAMENTO H H DISPLAY GHIACCIO SBRINAM COND VENTILATDRI LINEA PRESS MAX A Input terminal board B Compressor contactor Compressor lce sensor End defrosting switch Water level sensor Condenser temperature probe Led ca
36. t 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 backofthebin Locatethe 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 Remove first the ice deflector evaporator cover then the masking tape from the ice thickness sensor a _ 16 AIR BAFFLE Install on the back side of the machine the air baffle as per instruction provided with it 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 7 Water outlet line Plug receptacle 8 9 0 Bin water outlet line Open vented water drain Water outlet from the condenser water cooled version only 1 2 3 Electrical plug 4 Water inlet 10 5 Shut off valve 6 Water filter Page 17 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 most important single ingredient in producing ice you cannot over
37. table leveling foot Optional Kit Casters for B 193 393 KRB 550 are available on request IMPORTANT OPERATING REQUIREMENTS MINIMUM MAXIMUM Air Temperature 10 C 50 F 40 100 F Water Temperature 5 40 F 35 90 F Water Pressures 1 bar 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 equipment 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 inan 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 lif
38. terior 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 immediately In case of sxternal contact flush with water KEEP OUT OF THE REACH OF CHILDREN 1 Empty bin of ice 2 Remove front panel 3 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 Pouron MV 306 426 150 cc MV 456 606 250 cc MV 806 1006 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 After 15 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 35 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 t
39. through the water cooled Condenser which in turn 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 Page 28 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 pressure 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 freez
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