Scotsman AC 106 Service Manual

Scotsman AC 106 Service Manual

Electronic cubers with storage
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Page 1
SERVICE MANUAL
AC 106
AC 126
AC 176
AC 206
AC 226
Electronic cubers
with storage
Page 1
MS 1000.90 REV. 02/2007

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Summary of Contents for Scotsman AC 106

  • Page 1 Page 1 Page 1 SERVICE MANUAL AC 106 AC 126 AC 176 AC 206 AC 226 Electronic cubers with storage MS 1000.90 REV. 02/2007...
  • Page 2: Table Of Contents

    Electrical sequence Components description ADJUSTMENT, REMOVAL AND REPLACEMENT PROCEDURES Adjustment of the cube size Wiring diagram AC 106 Wiring diagram AC 126 - AC 176 - AC 206 - AC 226 Wiring diagram ACS 126 - ACS 176 Service diagnosis...
  • Page 3 The daily ice-making capacity is directly related to the condenser air inlet temperature, water temperature conditions of the condenser air filter and age of the machine. To keep your SCOTSMAN CUBER at peak performance levels, periodic maintenance checks must be carried out as indicated on Maintenance and Cleaning section of this manual.
  • Page 4 Dimensions: HEIGHT (without legs) 850 mm. HEIGHT (with legs) 970 mm. WIDTH 530 mm. DEPTH 600 mm. WEIGHT Kgs. AC 106 - CUBER machine specifications Water req. Model Cond. unit Finish Comp. HP Capacity lt/24 HR AC 106 AS 6...
  • Page 5 The daily ice-making capacity is directly related to the condenser air inlet temperature, water temperature conditions of the condenser air filter and age of the machine. To keep your SCOTSMAN CUBER at peak performance levels, periodic maintenance checks must be carried out as indicated on Maintenance and Cleaning section of this manual.
  • Page 6 Page 6 Page 6 SPECIFICATIONS - OVERFLOW DRAIN ADJUSTABLE FOOT CORD SET WATER INLET WATER INLET - WATER COOLED UNIT WATER OUTLET - WATER COOLED UNIT Dimensions: HEIGHT (without legs) 930 mm. HEIGHT (with legs) 1050 mm. WIDTH 680 mm. DEPTH 600 mm.
  • Page 7 The daily ice-making capacity is directly related to the condenser air inlet temperature, water temperature conditions of the condenser air filter and age of the machine. To keep your SCOTSMAN CUBER at peak performance levels, periodic maintenance checks must be carried out as indicated on Maintenance and Cleaning section of this manual.
  • Page 8 Page 8 Page 8 SPECIFICATIONS - OVERFLOW DRAIN ADJUSTABLE FOOT CORD SET WATER INLET WATER INLET - WATER COOLED UNIT WATER OUTLET - WATER COOLED UNIT Dimensions: HEIGHT (without legs) 1000 mm. HEIGHT (with legs) 1120 mm. WIDTH 680 mm. DEPTH 600 mm.
  • Page 9 Production charts shown indicate the production of ACM models; ice production of ACL and ACS models is 10% lower. To keep your SCOTSMAN CUBER at peak performance levels, periodic maintenance checks must be carried out as indicated on Maintenance and Cleaning section of this manual.
  • Page 10 Page 10 Page 10 SPECIFICATIONS ADJUSTABLE FOOT Dimensions: HEIGHT (without legs) 780 mm. HEIGHT (with legs) 860 mm. WIDTH 1250 mm. DEPTH 620 mm. WEIGHT 115 Kgs. AC 206 - CUBER machine specifications Water req. Model Cond. unit Finish Comp. HP Capacity lt/24 HR AC 206 AS 6...
  • Page 11 Production charts shown indicate the production of ACM models; ice production of ACL and ACS models is 10% lower. To keep your SCOTSMAN CUBER at peak performance levels, periodic maintenance checks must be carried out as indicated on Maintenance and Cleaning section of this manual.
  • Page 12 Page 12 Page 12 SPECIFICATIONS ADJUSTABLE FOOT Dimensions: HEIGHT (without legs) 1006 mm. HEIGHT (with legs) 1126 mm. WIDTH 1078 mm. DEPTH 715 mm. WEIGHT 120 Kgs. AC 226 - CUBER machine specifications Water req. Model Cond. unit Finish Comp. HP Capacity lt/24 HR AC 226 AS 6...
  • Page 13: General Information And Installation

    Cut and remove the plastic strip securing the following limitations will constitute the carton box to the skid. misuse under the terms of the SCOTSMAN b) Cut open the top of the carton and remove Manufacturer’s Limited Warranty resulting the polystyre protection sheet.
  • Page 14: Water Supply And Drain Connections

    Page 14 Page 14 Water supply - Water cooled models All SCOTSMAN ice machines are supplied from (Not on AC 106) the factory completely pre-wired and require only electrical power connections to the wire cord The water cooled versions of SCOTSMAN Ice provided at rear of the unit.
  • Page 15: Installation Practice

    12. Has the owner been given the name and 10. Has the owner/user been given the User the phone number of the authorized SCOTSMAN Manual and been instructed on the importance of Service Agency serving him? periodic maintenance checks?
  • Page 16: Operating Instructions

    Unit will start THE WATER DRAIN SOLENOID VALVE (Not up in charging cycle mode. on AC 106). NOTE. If in the 5 minutes lenght of the water NOTE. Every time the unit returns under...
  • Page 17: Operational Checks

    COMPRESSOR shortage of water in the water cooled condenser, the condenser temperature rises CONTACTOR COIL (Not on AC 106) and when it reaches 70 ° C (160 ° F) - for air WATER PUMP cooled version - or 60 ° C (140 ° F) - for water...
  • Page 18 Page 18 Page 18 FIG. 3 WATER DRAIN VALVE - EVAPORATOR WATER IN VALVE SWITCH - CONDENSER ELECTR. HOT GAS VALVE TIMER - AMBIENT CONTACTOR COIL RELAYS FAN MOTOR TRIAC TRANSF. WATER PUMP RELAY ELECTRONIC CARD Check to see through the ice discharge interior of the inverted mold cups;...
  • Page 19 (Fig.4). and the WATER PUMP on the first 15 seconds on models AC 106, NOTE. The lenght of the entire freezing cycle is governed by the evaporator tempe- AC 126 & AC 176 and 30 seconds on models rature sensor which has its probe placed in AC 206 &...
  • Page 20 Page 20 Page 20 Check the texture of ice cubes just released. NOTE. The ICE LEVEL CONTROL They have to be in the right shape with a small (INFRARED SYSTEM) is independent of the depression of about 5-6 mm in their crown. temperature however, the reliability of its If not, wait for the completion of the second cycle detection can be affected by external light...
  • Page 21: Freezing Cycle

    Page 21 PRINCIPLE OF OPERATION How it works In the SCOTSMAN cube ice makers the water The freezing cycle is controlled by the evaporator used to make the ice is kept constantly in temperature sensor (which has its probe in...
  • Page 22 Page 22 Page 22 FIG. A FIG. B FIG. C FIG. D...
  • Page 23 Page 23 Page 23 FIG. E FIG. F FIG. G FIG. H...
  • Page 24: Harvest Cycle

    FAN MOTOR (in air cooled version) the defrost cycle starts. WATER PUMP CONTACTOR COIL (Not on AC 106) ATTENTION. In case the unit is able to reach 0°C (32°F) evaporating temperature and during the second phase of freezing cycle...
  • Page 25: Electrical Sequence

    P.C.Board Relay 3 Coil ....... • Water Pump ........... NOTE. The evaporator temperature sensor, • Contactor Coil (Not on AC 106) ..... factory pre-set, is the same for all the models • and is not adjustable in the field. P.C.B. Timer ...........
  • Page 26: Components Description

    When steady, the micro processor Air cooled Water cooled supplies power to the electronic timer built into AC 106 320 gr (11.0 oz.) 250 gr ( 9.0 oz.) the P.C. BOARD so that it takes control of the last portion of freezing cycle.
  • Page 27 Page 27 Page 27 with ten keys, of one push button, of input P.C. BOARD (Data processor) terminals for the leads of the sensor probes and The P.C. BOARD, fitted in its plastic box located input and output terminals for the leads of the ice in the front of the unit, consists of two separated maker electrical wires.
  • Page 28 Page 28 Page 28 ° RED ALARM LED ON The DIP SWITCH N 7 and 8 allow the extention Too hi condensing temperature of the length of the harvest/defrost cycle according RED ALARM LED BLINKING to their combination as per following chart: Too hi evaporating temperature YELLOW FREEZING CYCLE ON DIP SWITCH...
  • Page 29 The water inlet solenoid valve is activated by the micro processor of the P.C. BOARD during the W. CONTACTOR - (Not on AC 106) first 5 minutes of water filling phase as well as during the defrost cycle. When energized it allows...
  • Page 30: Adjustment Of The Cube Size

    Page 30 Page 30 ADJUSTMENT PROCEDURES ADJUSTMENT OF THE CUBE SIZE CAUTION. Before performing actual adjustment of the cube size , check other possible causes for cube size problems, refer to the Service Diagnosis Section for problem review and analysis. Do not perform any adjustment till the icemaking system has progressed SMALL...
  • Page 31: Wiring Diagram Ac 106

    Page 31 Page 31 WIRING DIAGRAM AC 106 AIR AND WATER COOLED 230/50-60/1 The unit is shown on freezing cycle...
  • Page 32: Wiring Diagram Ac 126 - Ac 176 - Ac 206 - Ac 226

    Page 32 Page 32 WIRING DIAGRAM AC 126-176-206-226 AIR AND WATER COOLED 230/50-60/1 The unit is shown on freezing cycle...
  • Page 33: Wiring Diagram Acs 126 - Acs 176

    Page 33 Page 33 WIRING DIAGRAM ACS 126-176 AIR AND WATER COOLED 230/50-60/1 The unit is shown on freezing cycle EASY FIT MODEL WATER COOLED MODEL AIR COOLED MODEL...
  • Page 34: Service Diagnosis

    Moisture in the system Same as above Shortage of refrigerant Check for leaks & recharge Cloudy cubes Shortage of water See remedies for shortage of water Dirty water supply Use water softner or water filter Accumulated impurities Use SCOTSMAN Ice Machine cleaner...
  • Page 35 Page 35 Page 35 SERVICE DIAGNOSIS SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Shortage of water Water spilling out through curtain Check or replace curtain Water solenoid valve not opening Replace valve Water leak in sump area Locate and repair Water flow control plugged Replace water inlet valve Leak of water drain valve Replace valve...
  • Page 36 Page 36 Page 36 SERVICE DIAGNOSIS SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Unit won’t harvest Inoperative P.C.Board Replace P.C.Board Hot gas valve not opening Valve coil with open winding Replace valve Water solenoid valve not opening Valve coil with open winding Replace valve Incorrect discharge pressure Inoperative condenser sensor...
  • Page 37: Maintenance And Cleaning Instructions

    Page 37 Page 37 MAINTENANCE AND CLEANING INSTRUCTIONS GENERAL 6. Check for refrigerant leaks. The periods and the procedures for maintenance and cleaning are given as guides and are not to be construed as absolute or invariable. CLEAN - REPLACE OF AIR Cleaning, especially, will vary depending upon CONDENSER FILTER local water and ambient conditions and the ice...
  • Page 38: Cleaning Instructions Of Water System

    OF WATER SYSTEM seat and take it out to clean it separately. Clean-sanitise the water system, evaporator, bin and spray jets using a solution of SCOTSMAN Ice Machine Cleaner/Sanitizer. NOTE. Cleaning requirements vary according to the local water conditions and individual user operation.
  • Page 39 Page 39 Page 39 Sanitation 11. Switch ON again the machine at front master button switch then push the PC BOARD PUSH BUTTON for more then 2" and less of 5" to put the NOTE. Sanitation of the water system is machine in cleaning mode.

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