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SERVICE MANUAL
MAR 78
MAR 108
MAR 128
MAR 208
MAR 308
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
Page 1
SPLIT
RN
090144 00 - REV. 03/2016
09014400
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Summary of Contents for Scotsman MAR 78
- Page 1 Page 1 Page 1 SERVICE MANUAL MAR 78 MAR 108 MAR 128 MAR 208 MAR 308 SPLIT 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...
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Page 2: Foreword
MAR 208 and MAR 308 operating by fresh water. given in this service manual who has to provide MAR 78, MAR 128 and MAR 308 only are available, for the complete condensing unit, its controls and upon request, presetted to operate by sea water. -
Page 3: Table Of Contents
Page 3 Page 3 Foreword page TABLE OF Table of contents CONTENTS Specifications Section I GENERAL INFORMATION General Application area Condensing unit Control devices Location considerations Refrigerant lines Hydraulic circuit Ice storage room 12-14 Unit layout Section II INSTALLATION Unpacking and inspection Location and levelling Refrigerant piping connections Water piping connections... -
Page 4: Specifications
Page 4 Page 4 SPECIFICATIONS MAR 78 - 108 - 128 - 208 - 308 Ø1 Ø2 Ø3 Ø4 MAR 78 3/4" gas 3/8" gas 3/4" gas 21 mm MAR 108 3/4" gas 3/8" gas 3/4" gas 21 mm MAR 128 3/4"... - Page 5 Page 5 Page 5 MAR 78 SPLIT Set for Fresh water Operation ICE MAKING CAPACITY NOTE. The production diagrams herebelow represented can be used as reference, since the data indicated have been obtained with a air/water cooled condensing unit equipped with a hermetic compressor type U.H.
- Page 6 Page 6 Page 6 MAR 108 SPLIT Set for Fresh water Operation ICE MAKING CAPACITY NOTE. The production diagrams herebelow represented can be used as reference, since the data indicated have been obtained with a air/water cooled condensing unit equipped with a hermetic compressor type U.H.
- Page 7 Page 7 Page 7 MAR 128 SPLIT Set for Fresh water Operation ICE MAKING CAPACITY NOTE. The production diagrams herebelow represented can be used as reference, since the data indicated have been obtained with a air/water cooled condensing unit equipped with a hermetic compressor type U.H.
- Page 8 Page 8 Page 8 MAR 208 SPLIT Set for Fresh water Operation ICE MAKING CAPACITY NOTE. The production diagrams herebelow represented can be used as reference, since the data indicated have been obtained with a air/water cooled condensing unit equipped with a hermetic compressor type DORIN K500 CS providing - 8250 Kcal/hr at -20 °...
- Page 9 Page 9 Page 9 MAR 308 SPLIT Set for Fresh water Operation ICE MAKING CAPACITY NOTE. The production diagrams herebelow represented can be used as reference, since the data indicated have been obtained with a air/water cooled condensing unit equipped with a semihermetic compressor type DORIN K1000 CS providing - 9700 Kcal/hr at -30 °...
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Page 10: Section I
Whatever is the type of compressor being used, it is recommended, for its selection, to observe the refrigerant capacity on the following table: COMPLETE SYSTEM INSTALLATION - How MAR 78 3200 Kcal/h -18°C Evap. Temp. it is made MAR 108 4800 Kcal/h -24°C Evap. -
Page 11: Control Devices
MAR 78 MAR 108 MAR 128 MAR 208 MAR 308... -
Page 12: Location Considerations
The Ice Making Section (MAR SPLIT UNIT) certain kind of ice chute is required. Make sure to generally requires: have it available for the start-up of the system. – 21 lt/hr MAR 78 – 29 lt/hr MAR 108 – 42 lt/hr MAR 128 REFRIGERANT LINES –... - Page 13 Page 13 Page 13 is being used on a daily basis, it is not necessary Also a weight volume ratio of 2.1 cm. mt. per ton, to provide cooling for the ice storage room. must be taken into consideration for correct ice storage.
- Page 14 Page 14 Page 14 NON REFRIGERATED ICE STORAGE ROOM 1 Condensing unit 2 Liquid line 3 Evaporator drum unit 4 Suction line 5 Power supply line 6 Hand disconnect switch 7 Water supply line 8 Hand shut-off valve 9 Water filter 10 Condenser water inlet 11 Condenser water outlet 12 Evaporator water supply...
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Page 15: Unit Layout
Page 15 Page 15 UNIT LAYOUT AND OVERALL DIMENSIONS MAR 78-108-128 MAR 208-308 mm (inch) mm (inch) 621 (24.45) 661 (26.02) 876 (34.48) 1296 (51.03) 520 (20.38) 520 (20.38) 813 (32) 853 (33.58) 231 (9.09) 440 (17.32) 3/4" GAS 28 mm 3/8"... -
Page 16: Installation
Fitting sizes: Liquid Line Suction Line 3. Remove screw and all panels from cabinet and inspect for any concealed damage. Notify MAR 78-108-128 3/8" Gas 3/4" Gas carrier of any concealed damage claims as MAR 208 1/2" Gas Ø... -
Page 17: Water Piping Connections
Page 17 Page 17 For pressurizing, evacuating and charging the Water inlet line must go directly to float valve line system, two service valves are necessary; one fitting of 3/4" gas, (copper tube is not should be in the Suction Line at the inlet side of recommended for sea water supply) also make suction filter and one should be in the Liquid Line sure to fit on this same a hand shut-off valve... -
Page 18: Electrical Connections
Page 18 Page 18 MAR SPLIT UNIT - ELECTRICAL Unit be electrically connected to the condensing unit control box contactor as illustrated on the CONNECTION following wiring diagrams representing three The supply power, voltage frequency and phase different electric supply line situation which are must coincide with unit nameplate. -
Page 19: Installation Practice
Page 19 Page 19 INSTALLATION PRACTICE SPLIT 1 Condensing unit UNIT ASHORE 2 Liquid line 3 Evaporator drum unit 4 Suction line 5 Power supply line 6 Hand disconnect switch 7 Water supply line 8 Hand shut-off valve 9 Water filter 10 Condenser water inlet 11 Condenser water outlet 12 Evaporator water supply... -
Page 20: Mar Split In Multiple Installation
Page 20 Page 20 MAR SPLIT IN MULTIPLE INSTALLATION MAR SPLIT suction line to maintain constant pressure on evaporator drum. In multiple installation various types of commercial Therefore, for the MAR SPLIT multiple installation refrigerating equipment are connected to the you may need: same condensing unit, which is normally located 1. -
Page 21: Testing
Page 21 Page 21 SECTION III TESTING COMPLETE SYSTEM LEAK TESTS Wheigh the refrigerant drum before charging so that an accurate record can be kept of the weight During pressure testing for leaks, keep the of refrigerant put in the system. It refrigerant is compressor suction service valve and discharge added to the system through the suction side on service valve closed to prevent air and moisture... - Page 22 Page 22 Page 22 2. Provide power to the unit. order to delay compressor start up by 18' (KT1 orange LED blinks during this delay). On normal operation - compressor ON - KT1 3. Observe the water filling operations. LEDs (orange and green) are steady ON a) Water flows into the float reservoir first.
- Page 23 Indicative Operating Pressure - With Fresh Water Supply - Water Cooled System MAR 78 MAR 108 MAR 128 MAR 208 MAR 308...
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Page 24: Principle Of Operation - How It Works
Page 24 Page 24 SECTION IV PRINCIPLES OF OPERATIONS - HOW IT WORKS On fresh water installation a combination of water 1. ICE MAKER pump and water distributor tube provides a The revolving drum which may be of two different constant flow of cold water to the upper side of sizes depending on the ice maker capacity, is the evaporator drum so to have an extended... -
Page 25: Mar Split Electrical/Refrigeration
Page 25 Page 25 H. Automatic Expansion Valve (A.E.V.) 3. MAR SPLIT - ELECTRICAL / REFRIGERATION The automatic expansion valve controls the refrigerant when passing from the liquid line The electrical circuit consists of drive motor, to the evaporator. As the pressure decreases water pump, water pressure switch, spout switch on the low side, the expansion Valve open and time delay safety device. - Page 26 Should the driving strain be excessive, the compressor off periods. Supplied. two fiber keys will shear. MAR 78, 108 and 128 are equipped with a Z. Hi and Lo Pressure indicating gauges gear reducer having a ratio of 1/570. Could not be necessary - They are subject to MAR 208 and 308 have a gear reducer with a setting alternations.
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Page 27: Adjustment & Removal & Replacement Procedures
Page 27 Page 27 SECTION V MAR SPLIT ADJUSTMENT & REMOVAL & REPLACEMENT PROCEDURES 2. REMOVE AND REPLACEMENT OF The procedures provided in this section are EVAPORATOR DRUM REFRIGERANT arranged in order to make specific adjustment SEALING DEVICES and removal and replacement information easy to locate. - Page 28 Page 28 Page 28 9. Check to see the surface conditions of cylinder 3) Unloose and remove hex head screw shaft journal. It is of extreme importance that securing the pulley to motor shaft. this surface be clean, smooth and polished. In case of scored surface it is necessary to 4) Disconnect wire leads to motor.
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Page 29: Maintenance & Cleaning Instructions
5. Clean the water reservoir and exterior of the 4. Close water inlet valve located at evaporator drum assembly using a solution of side onto water inlet line. SCOTSMAN Ice Machine Cleaner. Refer to procedure VI-3, CLEANING ICE MAKER. NOTE. Cleaning requirements vary according local water conditions and individual user operation. - Page 30 9. Push water hose quick fitting ring 12. Prepare a solution in a bucket by mixing for 1/2 liter of SCOTSMAN CLEANER with 5 liters of warm (40-50°C) water. WARNING: When using any chemical, wear hands protection (gloves).
- Page 31 23. Reinstall all removed part from #9 to #5. cleaning solution and clean it by sponge and/ or suitable brush. 24. Prepare as per #12 using SCOTSMAN sanitizer rather then cleaner. Possible sanitizing solution could be by mixing 1,5 cl...
- Page 32 10. Repeat again #5 to dump reservoir from chemical solution and later rinse all parts by fresh water. 11. Prepare as per #6 using SCOTSMAN sanitizer rather then cleaner. Possible sanitizing solution could be by mixing 3 cl (10 oz) of sanitizer with 10 lt (2 gallons) of warm potable water.
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Page 33: Service Diagnosis
Page 33 Page 33 SECTION VII SERVICE DIAGNOSIS The Service Diagnosis Section is for use in aiding The following chart lists corrective actions for the the servicemen in diagnosing a particular problem causes of known symptoms of certain problems for pin-pointing the area in which the problems that can occur in the ice making refrigerarion lines, thus an ever available reference for proper system. - Page 34 Page 34 Page 34 SYMPTON POSSYBLE CAUSE CORRECTION Unit will not run. Blown fuse. Replace fuse and check for cause of blow fuse. Loose electrical connection. Check wiring. Switch in OFF position. Turn switch to ON. Inoperative master switch. Replace switch. Spout switch cut-out.
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Page 35: Wiring Diagrams
Page 35 Page 35 SECTION VIII WIRING DIAGRAMS (MACHINE OPERATING) This section is provided as an aid in under- WARNING - When conducting a continuity standing the electrical circuit of the MAR Split check of the MAR Unit: Unit. 1. Disconnect the main power source. 2.
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