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R 134 A / R 404 A VERSION
MF 26 from S.N. 05566
MF 36 from S.N. 21806
MF 46 from S.N. 17078
MF 56 from S.N. 25653
MF 66 from S.N. 05711
Electronic modular
flakers and superflakers
Scotsman Ice Srl
Via Lainate, 31 - 20010 Pogliano M.se - Milano - Italy
Tel. +39-02-93960.1 (Aut. Sel.)- Telefax +39-02-93550500
Direct Line to Service & Parts:
Phone +39-02-93960350 - Fax +39-02-93540449
Website: www.scotsman-ice.it
E-Mail: scotsman.europe@scotsman.it
SERVICE MANUAL
MF 26
MF 36
MF 46
MF 56
MF 66
NEW PC BOARD
REV. 04/2017
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Summary of Contents for Scotsman 05566
- Page 1 MF 56 MF 66 R 134 A / R 404 A VERSION NEW PC BOARD MF 26 from S.N. 05566 MF 36 from S.N. 21806 MF 46 from S.N. 17078 MF 56 from S.N. 25653 MF 66 from S.N. 05711...
- Page 2 STATUS REASON WHY – SIGNIFICATION – SIGNIFICATO – Beschreibung ON STEADY UNIT OFF AT BIN FULL FIXE CABINE PLAINE FISSO CONTENITORE PIENO Ständig an Maschine AUS, Speicher voll! BLINKING SLOW I/R BEAM CUTTED CLIGNOTANT LENT FAISCEAU INFRA ROUGE CELLULE NIVEAU GLACE INTERROMPU LAMPEGG.
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Page 3: Table Of Contents
Page 1 Table of contents page TABLE OF Specifications MF 26 CONTENTS Specifications MF 36 Specifications MF 46 Specifications MF 56 Specifications MF 66 GENERAL INFORMATION AND INSTALLATION Introduction Unpacking and Inspection - Ice maker Unpacking and Inspection - Storage bin Location and levelling Electrical connections Water supply and drain connections... -
Page 4: Specifications Mf
NOTE. The daily ice-making capacity is directly related to the condenser air inlet temperature, water temperature and age of the machine. To keep your SCOTSMAN FLAKER at peak performance levels, periodic maintenance checks must be carried out as indicated on maintenance section of this manual. - Page 5 Page 3 SPECIFICATIONS Dimensions: HEIGHT (less legs) 525 mm. HEIGHT (with legs) 542 mm. WIDTH 563 mm. DEPTH 536 mm. WEIGHT 49 Kg. MF 26 - MACHINE SPECIFICATIONS Water req. Model Cond. unit Comp. HP Finish lt/24 HR MF 26 AS 120* S.
- Page 6 NOTE. The daily ice-making capacity is directly related to the condenser air inlet temperature, water temperature and age of the machine. To keep your SCOTSMAN FLAKER at peak performance levels, periodic maintenance checks must be carried out as indicated on maintenance section of this manual.
- Page 7 Page 5 SPECIFICATIONS Dimensions: HEIGHT (less legs) 525 mm. HEIGHT (with legs) 542 mm. WIDTH 563 mm. DEPTH 536 mm. WEIGHT 49 Kg. MF 36 - MACHINE SPECIFICATIONS Water req. Model Cond. unit Comp. HP Finish lt/24 HR MF 36 AS 200* S.
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Page 8: Specifications Mf
NOTE. The daily ice-making capacity is directly related to the condenser air inlet temperature, water temperature and age of the machine. To keep your SCOTSMAN FLAKER at peak performance levels, periodic maintenance checks must be carried out as indicated on maintenance section of this manual. - Page 9 Page 7 SPECIFICATIONS Dimensions: HEIGHT (less legs) 645 mm. HEIGHT (with legs) 650 mm. WIDTH 535 mm. DEPTH 660 mm. WEIGHT 77 Kg. MF 46 - MACHINE SPECIFICATIONS Water req. Model Cond. unit Finish Comp. HP lt/24 HR MF 46 AS 320* S.
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Page 10: Specifications Mf
NOTE. The daily ice-making capacity is directly related to the condenser air inlet temperature, water temperature and age of the machine. To keep your SCOTSMAN FLAKER at peak performance levels, periodic maintenance checks must be carried out as indicated on maintenance section of this manual. - Page 11 Page 9 SPECIFICATIONS Dimensions: HEIGHT (less legs) 785 mm. HEIGHT (with legs) 790 mm. WIDTH 535 mm. DEPTH 660 mm. WEIGHT 93 Kg. MF 56 - MACHINE SPECIFICATIONS Water req. Model Cond. unit Comp. HP Finish lt/24 HR MF 56 AS 600* S.
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Page 12: Specifications Mf
NOTE. The daily ice-making capacity is directly related to the condenser air inlet temperature, water temperature and age of the machine. To keep your SCOTSMAN FLAKER at peak performance levels, periodic maintenance checks must be carried out as indicated on maintenance section of this manual. - Page 13 Page 11 SPECIFICATIONS Dimensions: HEIGHT 850 mm. WIDTH 1065 mm. DEPTH 698 mm. WEIGHT 179 Kg. MF 66 - MACHINE SPECIFICATIONS Water req. Model Cond. unit Comp. HP Finish lt/24 HR MF 66 AS 1150* S. Steel MF 66 WS Water 8000* Basic electr.
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Page 14: General Information And Installation
2 above. the SCOTSMAN MF 26, MF 36, MF 46, MF 56 and MF 66 Modular Icemakers. Remove all internal support packing and The Electronic Flakers and Superflakers are masking tape. -
Page 15: Location And Levelling
Do not put any stiffeners crossing the ice following limitations will constitute drop opening. misuse under the terms of the SCOTSMAN Manufacturer’s Limited Warranty resulting in LOSS of warranty coverage. Install the bin top in its position onto the bin... -
Page 16: Water Supply And Drain Connections
WATER SUPPLY - WATER COOLED MODELS 10. Has the owner/user been given the User Manual and been instructed on the importance of The water cooled versions of SCOTSMAN Ice periodic maintenance checks? Makers require two separate inlet water supplies, one for the water making the flaker ice and the 11. -
Page 17: Installation Practice
Page 15 G. INSTALLATION PRACTICE 1. Hand shut-off valve 2. Water filter 3. Water supply line (flexible hose) 4. 3/4" GAS male fitting 5. Power line 6. Main switch 7. Drain fitting 8. Vented drain 9. Vented drain 10. Open trapped vented drain WARNING. -
Page 18: Operating Instructions
Page 16 OPERATING INSTRUCTIONS Elapsed the stand by period the unit starts START UP operating with the activation in sequence of the following assemblies: After having correctly installed the ice maker and completed the plumbing and electrical GEAR MOTOR/S connections, perform the following “Start-up” pro- COMPRESSOR cedure. - Page 19 Page 17 FIG. 2 WATER LEVEL RESET GEAR MOTOR ROTATION CONTACTOR COIL RELAYS CONDENSER TEMP. T 40÷50°C EVAPORATOR TEMP. GEAR MOTOR ICE LEVEL CONTROL TRIAC FAN MOTOR TRANSF. ELECTRONIC CARD FIG. 3 WATER LEVEL RESET GEAR MOTOR ROTATION CONTACTOR COIL RELAYS CONDENSER TEMP.
- Page 20 Page 18 NOTE. On air cooled models, the condenser NOTE. If, after ten minutes from the compressor start-up, the evaporating tem- temperature sensor, which is located within perature has not dropped down to a value the condenser fins, keeps the head °...
- Page 21 Page 19 This will cause a gradual decrease of the water After 3 minutes the unit resumes its total operation level in the float reservoir and as soon as the with the immediate start-up of the gear motor level gets below the two vertical metal pins, the and, few seconds later, of the compressor.
- Page 22 Page 20 NOTE. The ICE LEVEL CONTROL NOTE. During the life of the machine the Ice (INFRARED SYSTEM) is independent of the Level Control may require a recalibration temperature however, the reliability of its mainly when the glass of the two optical eyes detection can be affected by external light are covered by a thin lay of scale.
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Page 23: Principle Of Operation (How It Works)
Page 21 PRINCIPLE OF OPERATION WATER CIRCUIT MF 26-36 ICE SPOUT The water enter in the machine through the water inlet fitting which incorporates a strainer - FLOAT TANK located at the rear side of the cabinet - then it FLOAT VALVE goes to the water reservoir flowing through a FREEZER... -
Page 24: Refrigerant Circuit
Page 22 By running the ice maker, i.e. by putting the unit This condenser temperature sensor, when senses under power, starts the automatic and continuous a rising of the condenser temperature beyond icemaking process which would not stop until the the pre-fixed limit, changes its electrical resistance and send a low voltage power flow to the MICRO- ice storage bin gets filled-up to the level of the... - Page 25 Page 23 tube connected to the liquid refrigerant line. As The RED LED starts blinking and three pressure increases, the water regulating valve minutes later the flaker unit resume its normal opens to increase the flow of cooling water to the operating mode.
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Page 26: Mechanical System
MECHANICAL SYSTEM The machine will remain in OFF mode for one hour then it will restart automatically. The mechanical system of the SCOTSMAN In case the unit trips OFF again in alarm for Flaker machines consists basically of a gear... -
Page 27: Operating Pressures
Page 25 REFRIGERANT METERING DEVICE: REFRIGERANT CHARGE (R 404 A) Air cooled Water cooled capillary tube MF 36 660 gr 520 gr MF 46 750 gr 600 gr MF 56 980 gr 700 gr MF 66 2400 gr 1200 gr REFRIGERANT CHARGE (R 134 A) NOTE. -
Page 28: Components Description
Page 26 COMPONENTS DESCRIPTION In case the condenser temperature sensor detects a temperature at the condenser lower ° ° than +3 C (37 F) that means ambient tempera- ture too low for the correct unit operation, the EVAPORATOR TEMPERATURE sensor signals to the P.C. BOARD to do not start SENSOR up the unit till the ambient temperature rises to The evaporator sensor probe is inserted into its... - Page 29 Page 27 chutes on MF 66 model), has the function to stop The P.C. BOARD is the brain of the system and the operation of the ice machine when the light it elaborates, through its micro processor, the beam between the light source and the receiver signals received from the sensors in order to gets interrupted by the flake ice which control the operation of the different electrical...
- Page 30 Page 28 TO BY-PASS THE 3'/60' STAND BY TIME, SYMPLY JUMP "TEST" CONTACTS WITH PCB ENERGIZED G. JUMPERS 60/70°C Set up of the Safety Condensing Temperature Sensor The Flaker PC Board is equipped by six jumpers: JUMP IN - 70°C JUMP OUT - 60°C PURGE Used on machine equipped with Water Purge Valve to purge out the water...
- Page 31 Page 29 GEAR MOTOR NOTE. It is very important to make sure of the (Two on MF 66 Model) correct fitting of the cover on the reservoir in order to enable the sensor to efficiently control The gear motor is made of a single phase electric the water situation avoiding undue shutoff motor with permanent capacitor directly fitted on interventions.
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Page 32: Adjustment, Removal And Replacement Procedures
Page 30 ADJUSTMENT, REMOVAL AND REPLACEMENT PROCEDURES REPLACEMENT OF THE GEAR MOTOR NOTE. Read the instructions throughly MAGNETIC SENSOR before performing any of the following On MF 26, MF 36, MF 46 and MF 56 adjustment or removal and replacement pro- remove the front/top and side/rear panels and cedure. - Page 33 Page 31 Grasp the icebreaker and remove the icebreaker NOTE. It is good practice to replace the water and auger assembly by lifting them from the seal assy and both the top and the bottom evaporator. bearings any time the auger is removed. To facilitate this it is available a service Kit NOTE.
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Page 34: Replacement Of The Gear Motor Assy
Page 32 18. Apply some move lubricant then place the Remove the clamp fastening the water hose S.S. trust washer. to the water inlet port of the freezer assy. Place a water pan under this water inlet port then 19. After to have replace the O ring into the ice disconnect the water hose and collect all water flowing from freezer and from water hose. -
Page 35: Wiring Diagram Mf 26 - Mf
Page 33 WIRING DIAGRAM MF 26-36 AIR AND WATER COOLED 230/50/1... - Page 36 Page 34 WIRING DIAGRAM MF 46 - MF 56 AIR AND WATER COOLED SINGLE PHASE...
- Page 37 Page 35 WIRING DIAGRAM MF 56 AIR AND WATER COOLED THREE PHASE...
- Page 38 Page 36 WIRING DIAGRAM MF 66 AIR AND WATER COOLED THREE PHASE...
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Page 39: Service Diagnosis
Page 37 SERVICE DIAGNOSIS SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Unit will not run Blown fuse in P.C.Board Replace fuse & check for cause of No LED lighted-on blown fuse Master switch in OFF position Turn switch to ON position Inoperative P.C.Board Replace P.C.Board Loose electrical connections Check wiring... - Page 40 Page 38 SERVICE DIAGNOSIS SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Wet ice Ambient temperature too high Move unit to cooler location Under or overcharge of refrigerant Recharge with correct quantity High water level in the freezer Lower to approx. 20 mm below ice spout Faulty compressor Replace...
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Page 41: Maintenance And Cleaning Instructions
SCOTSMAN Cleaner plain. With the ice machine and fan motor OFF on air cooled models, clean condenser using vacuum... - Page 42 (45°-50°C) with a 0,2-0,3 liters of 12. Stop the icemaker and pour warm water on the ice deposited into the storage bin to melt it up. SCOTSMAN Ice Machine Cleaner (on MF 66 double the quantities). NOTE. DO NOT use ice produced with the cleaning solution.
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