Page 1 Page 1 SERVICE MANUAL AF 80 AF 100 AF 200 AF 20 AF 30 S Electronic flakers with storage 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 & Parts: Phone +39-02-93960350 - Fax +39-02-93540449 ISO 900 1-C Website: www.scotsman-ice.com ert. n. 0 080 E-Mail: scotsman.europe@frimont.it MS 1000.73 REV.
Page 2 Page 2 TABLE OF CONTENTS Table of contents Specifications AF 80 Specifications AF 100 Specifications AF 200 Specifications AF 20 Specifications AF 30 page 2 3 5 7 9 11 GENERAL INFORMATION AND INSTALLATION Introduction Unpacking and Inspection Location and levelling Electrical connections Water supply and drain connections Final check list Installation practice 13 13 13 14 14 14 15 OPERATING INSTRUCTIONS Start up Operational checks 16 18 PRINCIPLE OF OPERATION (How it works) Water circuit Re
Page 3 Page 3 SPECIFICATIONS ELECTRONIC FLAKER MODEL AF 80 Important operating requirements: MIN - Air temperature 10°C (50°F) - Water temperature 5°C (40°F) - Water pressure 1 bar (14 psi) - Electr. voltage variations fromvoltage rating specified on nameplate -10% MAX 40°C (100°F) 40°C (100°F) 5 bars (70 psi) +10% ice making capacity AIR COOLED MODELS WATER COOLED MODELS Kg. 75 o°C 70 10 o°C Kg.
Page 4 Page 4 SPECIFICATIONS Dimensions: HEIGHT (less legs) HEIGHT (with legs) WIDTH DEPTH WEIGHT 813 mm. 933 mm. 535 mm. 621 mm. 72 Kg. AF80 - MACHINE SPECIFICATIONS Model Cond. unit AF80 AS AF80 WS Basic electr. 230/50/1 Finish Air Water S. Steel Amps Start Amps 2.2 11 * A 15°C water temperature Watts 330 Comp. HP 1/4 Electric power cons. Kwh per 24 HR 7.5 Ice bin cap Water req. lt/24 HR 25 Kg. 53** 300* Nr. of wires 3 x 1.
Page 5 Page 5 SPECIFICATIONS ELECTRONIC FLAKER MODEL AF 100 Important operating requirements: MIN - Air temperature 10°C (50°F) - Water temperature 5°C (40°F) - Water pressure 1 bar (14 psi) - Electr. voltage variations fromvoltage rating specified on nameplate -10% MAX 40°C (100°F) 40°C (100°F) 5 bars (70 psi) +10% ice making capacity AIR COOLED MODELS o°C Kg. 120 10 115 105 32 100 38 95 90 AMBIENT TEMPERATURE ICE PRODUCED PER 24 HRS.
Page 6 Page 6 SPECIFICATIONS Dimensions: HEIGHT (less legs) HEIGHT (with legs) WIDTH DEPTH WEIGHT 1006 mm. 1126 mm. 592 mm. 622 mm. 72 Kg. AF100 - MACHINE SPECIFICATIONS Model Cond. unit AF 100 AS AF 100 WS Basic electr. 230/50/1 Finish Air Water S. Steel Amps Start Amps 2.2 11 * A 15°C water temperature Watts 400 Comp. HP 1/4 Ice bin cap 32 Kg. Electric power cons. Kwh per 24 HR 9 Nr. of wires 3 x 1.5 mm2 Water req.
Page 7 Page 7 SPECIFICATIONS ELECTRONIC FLAKER MODEL AF 200 Important operating requirements: MIN - Air temperature 10°C (50°F) - Water temperature 5°C (40°F) - Water pressure 1 bar (14 psi) - Electr. voltage variations fromvoltage rating specified on nameplate -10% MAX 40°C (100°F) 40°C (100°F) 5 bars (70 psi) +10% ice making capacity AIR COOLED MODELS WATER COOLED MODELS o°C Kg. 120 10 115 10 115 21 105 32 100 38 95 90 85 ICE PRODUCED PER 24 HRS.
Page 8 Page 8 SPECIFICATIONS Dimensions: HEIGHT (less legs) HEIGHT (with legs) WIDTH DEPTH WEIGHT 1006 mm. 1126 mm. 592 mm. 622 mm. 72 Kg. AF 200 - MACHINE SPECIFICATIONS Model Cond. unit AF 200 AS AF 200 WS Basic electr. 230/50/1 Finish Air Water S. Steel Amps Start Amps 3.5 18 * A 15°C water temperature Watts 760 Comp. HP Ice bin cap Water req. lt/24 HR 3/8 32 Kg. 100* 580* Electric power cons. Kwh per 24 HR 12 Nr. of wires 3 x 1.
Page 9 Page 9 SPECIFICATIONS ELECTRONIC FLAKER MODEL AF 20 Important operating requirements: MIN - Air temperature 10°C (50°F) - Water temperature 5°C (40°F) - Water pressure 1 bar (14 psi) - Electr. voltage variations fromvoltage rating specified on nameplate -10% MAX 40°C (100°F) 40°C (100°F) 5 bars (70 psi) +10% ice making capacity AIR COOLED MODELS WATERCOOLED MODELS o°C Kg. 120 o°C Kg.
Page 10 Page 10 SPECIFICATIONS Dimensions: HEIGHT (less legs) HEIGHT (with legs) WIDTH DEPTH WEIGHT 1006 mm. 1126 mm. 969 mm. 613 mm. 97 Kg. AF20 - MACHINE SPECIFICATIONS Model Cond. unit AF 20 AS AF 20 WS Basic electr. 230/50/1 Finish Air Water S. Steel Amps Start Amps 3.2 17 * A 15°C water temperature Watts 500 Comp. HP 3/8 Electric power cons. Kwh per 24 HR 11 Ice bin cap Water req. lt/24 HR 70 Kg. 120** 600* Nr.
Page 11 Page 11 SPECIFICATIONS ELECTRONIC FLAKER MODEL AF 30 Important operating requirements: MIN - Air temperature 10°C (50°F) - Water temperature 5°C (40°F) - Water pressure 1 bar (14 psi) - Electr. voltage variations fromvoltage rating specified on nameplate -10% MAX 40°C (100°F) 40°C (100°F) 5 bars (70 psi) +10% ice making capacity AIR COOLED MODELS WATER COOLED MODELS o°C Kg. o°C Kg.
Page 12 Page 12 SPECIFICATIONS Dimensions: HEIGHT (less legs) HEIGHT (with legs) WIDTH DEPTH WEIGHT 1006 mm. 1126 mm. 969 mm. 613 mm. 105 Kg. AF30 - MACHINE SPECIFICATIONS Model Cond. unit AF 30 AS AF 30 WS Basic electr. 230/50/1 Finish Air Water S. Steel Amps Start Amps 3.8 20 * A 15°C water temperature Watts 600 Comp. HP Ice bin cap 1/2 70 Kg. Electric power cons. Kwh per 24 HR 14 Nr. of wires 3 x 1 mm2 Water req.
Page 13 Page 13 GENERAL INFORMATION AND INSTALLATION A. INTRODUCTION This manual provides the specifications and the step-by-step procedures for the installation, startup and operation, maintenance and cleaning for the SCOTSMAN AF series icemakers. The Electronic Flakers are quality designed, engineered and manufactured. Their ice making systems are thoroughly tested providing the utmost in flexibility to fit the needs of a particular user. NOTE.
Page 14 Page 14 All SCOTSMAN ice machines are supplied from the factory completely pre-wired and require only electrical power connections to the wire cord provided at the rear of the unit. Make sure that the ice machine is connected to its own circuit and individually fused (see data plate for fuse size). The maximum allowable voltage variation should not exceed -10% and +10% of the data plate rating.
Page 15 Page 15 8. Check all refrigerant lines and conduit lines to guard against vibrations and possible failure. 9. Have the bin liner and cabinet been wiped clean? 10. Has the owner/user been given the User Manual and been instructed on the importance of periodic maintenance checks? 11. Has the Manufacturer’s registration card been filled in properly? Check for correct model and serial number against the serial plate and mail the registration card to the factory. 12.
Page 16 Page 16 OPERATING INSTRUCTIONS START UP B. Elapsed the 3 minutes - stand by period - the unit starts operating with the activation in sequence of the following assemblies: GEAR MOTOR COMPRESSOR FAN MOTOR (if unit is an air cooled version) kept under control by the condenser temperature sensor which has its probe within the condenser fins (Fig.2). After having correctly installed the ice maker and completed the plumbing and electrical connections, perform the following “Start-up” procedure. A.
Page 17 Page 17 FIG. 2 WATER LEVEL RESET 88 ROTATION 12 12 CONDENSER TEMP. T 40÷50°C 11 EVAPORATOR TEMP. 10 10 77 DATA PROCESSOR SENSORS 13 GEAR MOTOR RELAYS 55 44 ICE LEVEL CONTROL L 1 N 2 GEAR MOTOR 33 9 COMPRESSOR CONTACTOR COIL 66 TRIAC FAN MOTOR TRANSF. ELECTRONIC CARD FIG. 3 WATER LEVEL RESET 88 GEAR MOTOR ROTATION 12 12 CONDENSER TEMP. T>75°C 11 EVAPORATOR TEMP.
Page 18 Page 18 NOTE. If, after ten minutes from the compressor start-up, the evaporating temperature has not dropped down to a value lower than -1°C (30°F) due to an insufficient quantity of refrigerant in the system, the evaporating temperature sensor detects such an abnormal situation and stops consequently the unit operation (drive motor keeps on working for 3' delay then stops). In this circustance, the 5th warning YELLOW LED will blink. NOTE.
Page 19 Page 19 This will cause a gradual decrease of the water level in the float reservoir and as soon as the level gets below the sensors, the flaker stops to operate (drive motor keeps on working by 3' delay then stops) and the YELLOW warning LED will glow to signal the shortage of water (Fig. 4). YELLOW LED goes off while the RED LED starts blinking. After 3 minutes the unit resumes its total operation with the immediate start-up of the gear motor and, 2 seconds later, of the compressor. NOTE.
Page 20 NOTE. The ICE LEVEL CONTROL (INFRA-RED SYSTEM) is independent of the temperature however, the reliability of its detection can be affected by external light radiations or by any sort of dirt and scale sediment which may deposit directly on the light source and on the receiver.
Page 21 Page 21 PRINCIPLE OF OPERATION WATER CIRCUIT The water enter in the machine through the water inlet fitting which incorporates a strainer and it is located at the rear side of the cabinet and then it goes to the water reservoir flowing through a float valve. NOTE. The presence of the water in the float reservoir is detected by a system of two sensors which operates in conjunction with the P.C. Board.
Page 22 Page 22 the MICRO-PROCESSOR of the P.C. Board which energizes, through a TRIAC, the Fan Motor in ON-OFF mode. When the opposite situation occures, i.e. the condenser temperature gets below the pre-fixed NOTE.
Page 23 Page 23 The refrigerant suction or Lo-pressure sets - in normal ambient conditions (21 °C) - on the value of 0.4÷0.5 bar (6÷7 psig) - 2.5 bar (36 psig) on AF 30 only after few minutes from the unit startup. This value can vary of 0.1 or 0.2 bar (1.5÷3 psig) in relation to the water temperture variations influencing the freezer cylinder. directly fitted in the gear case through which it drives - in counter clockwise rotation at a speed of 9.5 r.p.m.
Page 24 Page 24 REFRIGERANT METERING DEVICE: capillary tube REFRIGERANT CHARGE (R 134 A) air cooled water cooled AF 80 310 gr 310 gr AF 100 420 gr xxxxx AF 200 420 gr 420 gr AF 20 420 gr xxxxx REFRIGERANT CHARGE (R 404 A) air cooled water cooled AF 30 660 gr 520 gr NOTE. Before charging the refrigerant system always check the type of refrigerant and quantity as specified on the individual ice machine dataplate. The refrigerant charges indicated are relatives to averages operating conditions.
Page 25 Page 25 COMPONENTS DESCRIPTION A. EVAPORATOR TEMPERATURE SENSOR The evaporator sensor probe is inserted into its tube well, which is welded on the evaporator outlet line, it detects the temperature of the refrigerant on the way out from the evaporator and signals it by suppying a low voltage current flow to the P.C. Board Micro-Processor. According to the current received, the microprocessor let the ice maker to continue its operations.
Page 26 Page 26 As soon as the ice is scooped out (with the resumption of the light beam between the two infrared sensor of ice level control) 6 seconds later the ice machine resumes its operation with the simultaneous extinguishing the 2nd YELLOW LED. F. P.C. BOARD (Data processor) The P.C. BOARD, fitted in its plastic box located in the front of the unit, consists of two separated printed circuits one at high and the other at low voltage and protected by fuses.
Page 27 Page 27 G. JUMPERS The Flaker PC Board is equipped by three jumpers: J1 · TEST: Used in the factory to energise all the electrical components during the Testing Mode. Used to by-pass the 3' stand by time (just jump the contacts with PC Board under power). J2 - SYEN J3 - Pro. El. Ind. · 60/70°C: Used to set up the Cut Out temperature of the condenser sensor: • Jump OUT = 60°C • Jump IN = 70°C J3 - SYEN J2 - Pro. El. Ind.
Page 28 Page 28 ADJUSTMENT, REMOVAL AND REPLACEMENT PROCEDURES NOTE. Read the instructions thoroughly before performing any of the following adjustment or removal and replacement procedure. A. ADJUSTEMENT OF THE EVAPORATOR WATER LEVEL The correct water level in the freezing cylinder is about 25 mm. (1") below the ice discharge opening. Low water level causes excessive strain inside the freezer assembly due to a faster freezing rate. B. REPLACEMENT OF EVAPORATOR TEMPERATURE SENSOR 1.
Page 29 Page 29 2. Unloose the three screws securing the plastic cover to the gear motor speed sensor housing and remove it. 5. To install the replacement spout follow previous steps in reverse. 3. Unloose the two screws securing the sensor to the plastic housing and withdraw it from its seat. I. REPLACEMENT OF THE AUGER, WATER SEAL, BEARINGS AND COUPLING 1. Remove the front, rear and top panels. 4.
Page 30 Page 30 NOTE. It is good practice to replace the water seal assy and both the top and the bottom bearings any time the auger is removed. To facilitate this, SCOTSMAN EUROPE Service makes available a service Kit P/N 001028.07 which includes besides the above mentioned parts, the ice breaker O ring and a can of food grade waterproof grease. 11. Reach through the adaptor and remove the coupling parts. 12. Check both the coupling halves for chipping and wear and do not hesitate to replace them. 13.
Page 31 Page 31 2. Remove the clamp fastening the water hose to the water inlet port of the freezer assy. Place a water pan under this water inlet port then disconnect the water hose and collect all water flowing from freezer and from water hose. 6. To install the replacement condenser follow the above steps in reverse. NOTE. Thoroughly evacuate the system to remove moisture and non condensables after condenser replacement. 3.
Page 32 Page 32 6. Trace the water regulating valve capillary tube and unsolder its end from the refrigerant line then remove it from the unit. 7. To install the replacement compressor follow the above steps in reverse. NOTE. It is imperative to install a replacement drier whenever the sealed refrigeration system is open. Do not replace the drier until all other repairs or replacements have been completed. NOTE.
Page 33 Page 33 WIRING DIAGRAM AIR AND WATER COOLED 230/50-60/1 GV B G N A M V - YELLOW GREEN WHITE GREY BLACK BLUE BROWN GREEN
Page 34 Page 34 SERVICE DIAGNOSIS SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Unit will not run No LED lighted-up Blown fuse in P.C.Board Replace fuse & check for cause of blown fuse Master switch in OFF position Turn switch to ON position Inoperative P.C.Board Replace P.C.
Page 35 Page 35 SERVICE DIAGNOSIS SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Wet ice Ambinet temperature too high Move unit to cooler location High water level in the freezer Lower to approx. 20 mm below ice spout Faulty compressor Replace Water not entering in the freezer Air look in feed line to freezer. Clogged feed line to freezer.
Page 36 Page 36 MAINTENANCE AND CLEANING INSTRUCTION A. GENERAL The periods and the procedures for maintenance and cleaning are given as guides and are not to be construed as absolute or invariable. Cleaning, especially, will vary depending upon local water and ambient conditions and the ice volume produced; and, each icemaker must be maintened individually, in accordance with its particular location requirements. 9. Check the ice level control sensor to test shut-off.
Page 37 3. Shut close the water shutoff valve on water line. 4. Remove the top panels to gain access to the water reservoir. 5. Remove the float reservoir cover and with a piece of copper wire jump the two water level sensors. 6. Place a water pan under the freezer water inlet port, disconnect the water hose from this port and allow the water from the freezer to flow into the pan previously positioned. Then refit the water hose to the freezer water inlet port. 7.
