Scotsman AC Series Service Training

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NEW AC SERIES

AC SERIES

CUBERS

TECHNICAL SERVICE TRAINING

Welcome to another Scotsman technical service presentation. This one will cover the

smallest units of new AC "..6" Series Ice Cube Machines.

Models are AC 46, AC 56 and AC 86.

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Summary of Contents for Scotsman AC Series

Page 1 NEW AC SERIES AC SERIES CUBERS TECHNICAL SERVICE TRAINING Welcome to another Scotsman technical service presentation. This one will cover the smallest units of new AC “..6” Series Ice Cube Machines. Models are AC 46, AC 56 and AC 86.
Page 2 NEW AC SERIES AC 46 A/W Max. Ice Production = 24 kg/24h* Max. Storage Bin Capacity = 9 Kg * 10/10°C= Air & Water Inlet Temperature...
Page 3 NEW AC SERIES AC 56 A/W Max. Ice Production = 32 Kg/24h* Max. Storage Bin Capacity = 12,5 Kg * 10/10°C= Air & Water Inlet Temperature...
Page 4 NEW AC SERIES AC 86 A/W Max. Ice Production = 39 Kg/24h* Max. Storage Bin Capacity = 19 Kg * 10/10°C= Air & Water Inlet Temperature...
Page 5 NEW AC SERIES TOPICS On the next slides are shown the following steps by steps procedures: • UNPACKING • INSTALLATION • START UP AND OPERATIONAL CHECKS • OPERATING PRINCIPLES and COMPONENTS • MAINTENANCE • SERVICE ANALYSIS...
Page 6 NEW AC SERIES UNPACKING...
Page 7 NEW AC SERIES UNPACKING The machines are supplied in a carton box secured by two plastic strips to a wooden base. Check first the outside conditions of carton box and wooden base then cut the two plastic strips, remove the tape...
Page 8 NEW AC SERIES UNPACKING Visually inspect the exterior of the machine then open the bin door and remove from the inside the: • water supply inlet tube • water outlet tube • leg kit (only for AC 56 and AC 86)
Page 9 NEW AC SERIES UNPACKING Remove the adhesive tapes securing the curtain and the spray platen to the front of the water sump.
Page 10 NEW AC SERIES INSTALLATION...
Page 11 NEW AC SERIES INSTALLATION Check the data plate of the machine located on the rear panel for correct voltage as well as for the proper wiring/fuse size. Remember that all machines require a solid earth wire.
Page 12 NEW AC SERIES INSTALLATION Check for the correct water and ambient conditions that should be: • Min. ambient temperature 10ºC (50F) • Max. ambient temperature 40ºC (100F) • Min. water temperature 5ºC (40F) • Max. water temperature 35ºC (90F) • Min. water pressure 1 bar (14 PSI) •...
Page 13 NEW AC SERIES INSTALLATION Adequate space must Min. space 15 cm be left for proper water and electrical connections on the rear side of the machine. A minimum clearance of 15 cm on both sides for best routing air.
Page 14 NEW AC SERIES INSTALLATION - AIR CIRCULATION Fan Motor COLD AIR Condenser HOT AIR Compressor Control box...
Page 15 NEW AC SERIES INSTALLATION Installation under counter with no space of both sides are allowed but daily ice capacity can drop down to a maximum of 20%.
Page 16 NEW AC SERIES INSTALLATION Level the unit on both directions front to rear and…...
Page 17 NEW AC SERIES INSTALLATION ……. right to left side using the adjustable legs.
Page 18 NEW AC SERIES INSTALLATION - ELECTRICAL Install, on the cable supply with the machine, an adequate electrical plug according to the local standards and regulations. Maximum voltage variation should be ±10%. Machine must be individually fuse protected.
Page 19 NEW AC SERIES INSTALLATION – WATER IN Connect the water inlet 3/4” male threat of the water inlet solenoid valve to the water supply line by means of the rubber hose provided with machine. Install on water supply line closed to the machine...
Page 20 NEW AC SERIES INSTALLATION – WATER DRAIN Connect the 20 mm O.D. fitting of the water drain with the flexible hose supply with the machine securing it by proper clamp. As water will be mainly drained under pressure (by water pump) it is not necessary to have a vented drain.
Page 21 NEW AC SERIES TYPICAL INSTALLATION AIR COOLED VERSION HAND DISCONNECT SWITCH WATER VALVE WATER FILTER POWER WATER INLET WATER DRAIN...
Page 22 NEW AC SERIES INSTALLATION On the water cooled version there are two water inlet solenoid valve with two separated outlet fittings...
Page 23 NEW AC SERIES TYPICAL INSTALLATION WATER COOLED VERSION HAND DISCONNECT SWITCH WATER VALVE WATER FILTER WATER INLETS POWER WATER DRAINS...
Page 24 NEW AC SERIES INSTALLATION – SANITIZING BAG Trace the sanitizing protecting bag into the storage bin then open it …….
Page 25 NEW AC SERIES INSTALLATION – SANITIZING BAG ……. and take out the sanitizing bag.
Page 26 NEW AC SERIES INSTALLATION – SANITIZING BAG Open the storage bin door …….
Page 27 NEW AC SERIES INSTALLATION – SANITIZING BAG ...and insert it under its rubber support located behind the bin door.
Page 28 NEW AC SERIES INSTALLATION – SANITIZING BAG Be sure to secure the rubber support in the plastic pins.
Page 29 NEW AC SERIES INSTALLATION – SANITIZING BAG DO NOT OPEN DO NOT EAT...
Page 30 NEW AC SERIES START UP AND OPERATIONAL CHECKS...
Page 31 NEW AC SERIES START UP AND OPERATIONAL CHECKS Open the water tap/valve and Switch ON the power on the electrical supply line.
Page 32 NEW AC SERIES START UP AND OPERATIONAL CHECKS Push the Green Push Button Switch to Start Up the machine...
Page 33 NEW AC SERIES START UP AND OPERATIONAL CHECKS Move the “By-pass” Switch on the position II.
Page 34 NEW AC SERIES START UP AND OPERATIONAL CHECKS By doing so, both the water and hot gas solenoid valve are energized together with the water pump and fan motor. EVAPORATOR TSTAT THERMOSTAT CONDENSER SENSOR BY-PASS SWITCH MASTER WATER SWITCH PUMP...
Page 35 NEW AC SERIES START UP AND OPERATIONAL CHECKS The components energized during this period are: • Water Inlet Solenoid Valve...
Page 36 NEW AC SERIES START UP AND OPERATIONAL CHECKS • Hot Gas Solenoid Valve...
Page 37 NEW AC SERIES START UP AND OPERATIONAL CHECKS • Water pump...
Page 38 NEW AC SERIES START UP AND OPERATIONAL CHECKS • Fan Motor...
Page 39 NEW AC SERIES START UP AND OPERATIONAL CHECKS The Ice Machine starts up charging water till the water sump is filled up to the overflow stand pipe.
Page 40 NEW AC SERIES START UP AND OPERATIONAL CHECKS ….flows into the small orifice The water goes through the of the “Flow Control” located Water Inlet Valve then…. on the outlet port of the same.
Page 41 NEW AC SERIES START UP AND OPERATIONAL CHECKS Following the plastic hose the ..where it flows onto the incoming water arrive on the plastic evaporator platen upper side of the dribbling down through the evaporator…. holes located on the corners.
Page 42 NEW AC SERIES START UP AND OPERATIONAL CHECKS Dribbled water is collected down into the water sump….
Page 43 NEW AC SERIES START UP AND OPERATIONAL CHECKS …. where is located the overflow that assures the proper water level and quantity for the next freezing cycle.
Page 44 NEW AC SERIES START UP AND OPERATIONAL CHECKS As soon as the water sump is full and water is going through the drain, move the “By-pass” Switch on the position I.
Page 45 NEW AC SERIES START UP AND OPERATIONAL CHECKS The machine start up now in the freezing cycle with the following components in operation. EVAPORATOR TSTAT THERMOSTAT CONDENSER SENSOR BY-PASS SWITCH MASTER WATER SWITCH PUMP MOTOR VALVE COMPRESSOR WATER INLET SAFETY...
Page 46 NEW AC SERIES START UP AND OPERATIONAL CHECKS • Compressor...
Page 47 NEW AC SERIES START UP AND OPERATIONAL CHECKS • Water Pump...
Page 48 NEW AC SERIES START UP AND OPERATIONAL CHECKS • Fan Motor (on air cooled version only)
Page 49 NEW AC SERIES START UP AND OPERATIONAL CHECKS • Pressure control and Condensing Water Inlet (on water cooled version) Cut In 10 bar Cut Out 7 bar...
Page 50 NEW AC SERIES START UP AND OPERATIONAL CHECKS Water is circulating by the water pump into the inverted tin plated copper molds of the evaporator…...
Page 51 NEW AC SERIES START UP AND OPERATIONAL CHECKS …while the refrigerant is flowing into the serpentine welded on the upper side of the tin plated copper molds.
Page 52 NEW AC SERIES START UP AND OPERATIONAL CHECKS Few minutes after the start up of the freezing cycle, the temperature of the evaporator serpentine is very cold with a larger extension of frost around the same.
Page 53 NEW AC SERIES START UP AND OPERATIONAL CHECKS The machine remains in the freezing cycle for an average time of 20-22 minutes (supposing an <-25ºC ambient/room temperature of 21ºC) till the evaporator thermostat reach its Cut In temperature of -25ºC.
Page 54 NEW AC SERIES START UP AND OPERATIONAL CHECKS At this time the evaporator thermostat changes its position closing the contacts 3-2 and opening the contacts 3-4. EVAPORATOR TSTAT THERMOSTAT CONDENSER SENSOR BY-PASS SWITCH MASTER WATER SWITCH PUMP MOTOR VALVE COMPRESSOR...
Page 55 NEW AC SERIES START UP AND OPERATIONAL CHECKS Once completed the freezing cycle the machine enters into the defrost or harvest cycle with the following electrical components in operation: • Compressor...
Page 56 NEW AC SERIES START UP AND OPERATIONAL CHECKS • Water Inlet Solenoid valve...
Page 57 NEW AC SERIES START UP AND OPERATIONAL CHECKS • Hot Gas Valve...
Page 58 NEW AC SERIES START UP AND OPERATIONAL CHECKS During the defrost or harvest cycle the combined action of refrigerant, in Hot Gas state, and incoming Water are going to partially melt the ice cubes in contact with the tin plated copper molts...
Page 59 NEW AC SERIES START UP AND OPERATIONAL CHECKS In the meantime the temperature of the serpentine as well as of the cube size control (evaporator thermostat) rises up to its warm Cut In temperature changing the position from 3-2 to 3-4 and closing again the power to the water pump and fan motor.
Page 60 NEW AC SERIES START UP AND OPERATIONAL CHECKS Holding an hand full of ice cubes in contact with the storage bin thermostat it is possible to test its operation. <+1ºC Cooling down the bin thermostat to +1ºC….
Page 61 NEW AC SERIES START UP AND OPERATIONAL CHECKS …..the machine should stop to operate within 20-30 seconds. EVAPORATOR TSTAT THERMOSTAT CONDENSER SENSOR BY-PASS SWITCH MASTER WATER SWITCH PUMP MOTOR VALVE COMPRESSOR WATER INLET SAFETY RE-SET BUTTON VALVE REMIND & ALARM SWITCH...
Page 62 NEW AC SERIES START UP AND OPERATIONAL CHECKS If shorter, a small adjustment of the bin thermostat setting screw may be required. If so just turn it clockwise by 1/16 of turn and recheck.
Page 63 NEW AC SERIES OPERATING PRINCIPLES COMPONENTS...
Page 64 NEW AC SERIES OPERATING PRINCIPLES - FREEZE Evaporator Compressor Air cooled valve condenser...
Page 65 NEW AC SERIES OPERATING PRINCIPLES - HARVEST Evaporator Compressor Air cooled valve condenser...
Page 66 NEW AC SERIES OPERATING PRINCIPLES - FREEZE...
Page 67 NEW AC SERIES OPERATING PRINCIPLES - FREEZE...
Page 68 NEW AC SERIES OPERATING PRINCIPLES – MASTER SWITCH All AC units are equipped with a Green Lighted Master Push Switch located in the front panel. By pushing it, it possible to Switch ON...
Page 69 NEW AC SERIES OPERATING PRINCIPLES – MASTER SWITCH … and Switch OFF the entire machine.
Page 70 NEW AC SERIES OPERATING PRINCIPLES – ALARM/RESET SWITCH Beside the Green Master Switch is located a Red Alarm Light & Reset Switch.
Page 71 NEW AC SERIES OPERATING PRINCIPLES – ALARM & REMIND BOARD Both the Green Master Switch as well as the Red Alarm Light & Reset Switch are operating in conjunction with a small PC Board located behind the front panel.
Page 72 NEW AC SERIES OPERATING PRINCIPLES – ALARM & REMIND BOARD JUMPER FOR 70°C - OUT - OR 60°C -IN - POWER IN & OUT CONDENSING TEMPERATURE CUTTING OUT CONNECTOR WATER LEVEL SENSOR CONDENSER SENSOR RESET BUTTON CONNECTOR DIP SWITCH FOR CLEANING...
Page 73 NEW AC SERIES OPERATING PRINCIPLES – ALARM & REMIND BOARD The Alarm & Reminding Board, operating in conjunction with the condenser sensor ...
Page 74 NEW AC SERIES OPERATING PRINCIPLES – ALARM & REMIND BOARD …has the main function to transmit, to the External Red Alarm Light, the proper signal according to the need of the machine.
Page 75 NEW AC SERIES OPERATING PRINCIPLES – ALARM& REMIND BOARD...
Page 76 NEW AC SERIES OPERATING PRINCIPLES – TRIP OFF Whenever condensing temperature rises up to 70ºC, the condenser sensor installed >70ºC inside the condenser fins ….
Page 77 NEW AC SERIES OPERATING PRINCIPLES – TRIP OFF …send the signal to the Board to Switch Off immediately the operation of the machine.
Page 78 NEW AC SERIES OPERATING PRINCIPLES – FILTER CLEAN In case the Red Light is blinking FAST with the machine in operation it means….
Page 79 NEW AC SERIES OPERATING PRINCIPLES – FILTER CLEAN …. that the condensing temperature is more then 60°C but less then 70° and the condenser air filter needs to be cleaned.
Page 80 NEW AC SERIES OPERATING PRINCIPLES – WATER SYSTEM CLEAN In case the Red Light is blinking SLOW with the machine in operation it means….
Page 81 NEW AC SERIES OPERATING PRINCIPLES – WATER SYSTEM CLEAN AC 46-56-86 AC 46-56-86 …. to proceed with the MAINTENANCE MAINTENANCE cleaning of the TOOLS REQUIRED • Medium Phillips Screwdriver water system of • Medium Flat Screwdriver the machine as • Pair of safety gloves detailed on the •...
Page 82 NEW AC SERIES OPERATING PRINCIPLES – WATER SYSTEM CLEAN Once water system is cleaned it’s necessary to restart the count down timer, of the Remind PC Board, by pushing and holding for more then 20” the Red Re-Set button.
Page 83 NEW AC SERIES COMPONENTS - REFRIGERANT SYSTEM The components of the refrigerant system of the Models AC 46, AC 56 & AC 86 are composed by: • COMPRESSOR...
Page 84 NEW AC SERIES COMPONENTS - REFRIGERANT SYSTEM • CONDENSER...
Page 85 NEW AC SERIES COMPONENTS - REFRIGERANT SYSTEM • EVAPORATOR...
Page 86 NEW AC SERIES COMPONENTS - REFRIGERANT SYSTEM • SUCTION LINE AND CAPILLARY TUBE...
Page 87 NEW AC SERIES COMPONENTS - REFRIGERANT SYSTEM • DRIER...
Page 88 NEW AC SERIES COMPONENTS - REFRIGERANT SYSTEM • HOT GAS VALVE...
Page 89 NEW AC SERIES COMPONENTS - WATER SYSTEM The components of the water system of the Models AC 46, AC 56 & AC 86 are composed by: • WATER INLET VALVE...
Page 90 NEW AC SERIES COMPONENTS - WATER SYSTEM • WATER SUMP...
Page 91 NEW AC SERIES COMPONENTS - WATER SYSTEM • WATER PUMP...
Page 92 NEW AC SERIES COMPONENTS - WATER SYSTEM • SPRAY PLATEN...
Page 93 NEW AC SERIES COMPONENTS - WATER SYSTEM • OVERFLOW...
Page 94 NEW AC SERIES COMPONENTS - ELECTRICAL CONTROLS The components of the Electric System of the Models AC 46, AC 56 & AC 86 are composed by: • MASTER SWICH...
Page 95 NEW AC SERIES COMPONENTS - ELECTRICAL CONTROLS • ALARM-RESET SWITCH...
Page 96 NEW AC SERIES COMPONENTS - ELECTRICAL CONTROLS • EVAPORATOR THERMOSTAT...
Page 97 NEW AC SERIES COMPONENTS - ELECTRICAL CONTROLS • BIN THERMOSTAT...
Page 98 NEW AC SERIES COMPONENTS - ELECTRICAL CONTROLS • BY-PASS SWITCH...
Page 99 NEW AC SERIES COMPONENTS - ELECTRICAL CONTROLS • ALARM & CLEANING REMIND BOARD...
Page 100 NEW AC SERIES COMPONENTS - ELECTRICAL CONTROLS • CONDENSER SENSOR...
Page 101 END FIRST HALF...

This manual is also suitable for:

Ac 46 a/w Ac 56 a/w Ac 86 a/w