Related Manuals for Scotsman ACM 55
Summary of Contents for Scotsman ACM 55
- Page 1 Page 1 Page 1 SERVICE MANUAL ACM 45 ACM 55 R 134 A VERSION Electronic cubers with storage MS 1000.04 REV. 06/2000...
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Page 2: Table Of Contents
Page 2 Page 2 Table of contents page INDICE Specifications ACM 45 Specifications ACM 55 GENERAL INFORMATION AND INSTALLATION Introduction Unpacking and Inspection Location and levelling Electrical connections Water supply and drain connections Final check list Installation practice OPERATING INSTRUCTIONS... - Page 3 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 CUBER at peak performance levels, periodic maintenance checks must be carried out as indicated on page 33 of this manual.
- Page 4 Page 4 SPECIFICATIONS Dimensions: HEIGHT 725 mm. WIDTH 457 mm. DEPTH 480 mm. WEIGHT 39 Kgs. ACM 45 - CUBER machine specifications Capacity Water req. Model Cond. unit Finish Comp. HP the cold store lt/24 HR ACM 45 AS 6...
- Page 5 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 CUBER at peak performance levels, periodic maintenance checks must be carried out as indicated on page 33 of this manual.
- Page 6 Page 6 Page 6 SPECIFICATIONS Dimensions: HEIGHT 738 mm. WIDTH 457 mm. DEPTH 522 mm. WEIGHT 44 Kgs. ACM 55 - CUBER machine specifications Capacity Water req. Model Cond. unit Finish Comp. HP the cold store lt/24 HR ACM 55 AS 6 0110 Stainless steel 14 Kg.
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Page 7: General Information And Installation
CAUTION. Incorrect voltage supplied to the SCOTSMAN ACM 45 and ACM 55 icemakers. the icemaker will void your parts The Electronic Cubers are quality designed, replacement program. -
Page 8: Electrical Connections
Page 8 Page 8 WATER DRAIN All SCOTSMAN ice machines are supplied from the factory completely pre-wired and require only The recommended drain tube is a plastic or electrical power connections to the wire cord flexible tube with 18 mm (3/4") I.D. which runs to provided at rear of the unit. -
Page 9: Installation Practice
11. Has the Manufacturer’s registration card 12. Has the owner been given the name and been filled in properly? Check for correct model the phone number of the authorized SCOTSMAN and serial number against the serial plate and Service Agency serving him? mail the registration card to the factory. -
Page 10: Operating Instructions
Page 10 Page 10 OPERATING INSTRUCTIONS Start up NOTE. Every time the unit returns under power, after having been switched off, the After having correctly installed the ice maker and water inlet valve, the hot gas valve and the completed the plumbing and electrical water drain valve get energized for a period connections, perform the following “Start-up”... -
Page 11: Operational Checks
Page 11 Page 11 NOTE . If in the 5 minutes length of the water NOTE. On air cooled models the head filling phase the machine sump reservoir (condensing) pressure is kept between 11 does not get filled with water up to the rim of and 7 bars (155 and 100 psig) with ice the overflow pipe, it is advisable to check: machine at 21 °... - Page 12 Page 12 Page 12 During the freezing process, when the evaporator power signal to the electronic control device temperature falls to reach 0°C (32°F) the evaporator (P.C.BOARD) which in first instance generates temperature sensor, located in contact with the the glowing of the 5th RED LED located in the evaporator serpentine, supplies a low voltage front of the printed circuit board (Fig.3).
- Page 13 Page 13 Page 13 The unit remains however in its normal The third time Ta - Time added - is in relation freezing cycle mode untill the evaporator tempe- to one of the different combinations of the five rature detected by the sensor reaches the tem- keys 3, 4, 5, 6 AND 7 of the DIP SWITCH perature of -13°C (8.5°F).
- Page 14 Page 14 Page 14 If the ice cubes require a correction of their NOTE. The length of the defrost cycle (not shape, it is possible to modify the length of the adjustable) is automatically determinated by timed freezing cycle by changing the DIP the micro processor of P.C.BOARD in relation SWITCH keys setting as illustrated on table C of the time T2 necessary for the unit to...
- Page 15 Page 15 Page 15 Remove the refrigerant service gauges and NOTE. The CUT-IN RANGE OF THE ICE re-fit the control box cover and the unit service LEVEL CONTROL SENSOR can be adjusted panels previously removed. by means of the DIP SWITCH keys 8 and 9 as shown on table D of PRINCIPLE OF Instruct the owner/user on the general OPERATION;...
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Page 16: Freezing Cycle
How it works the capillary tube (warmer), before to be sucked In the SCOTSMAN cube ice makers the water in the compressor and to be recirculated as hot used to make the ice is kept constantly in compressed refrigerant gas. - Page 17 Page 17 Page 17 FIG. A FIG. B FIG. C FIG.D...
- Page 18 DIP SWITCH keys conditions. When the ice maker stops on combinations for the ACM 45 and ACM 55 at account of this protective device, there is a different versions as they are set in the factory.
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Page 19: Harvest Cycle
Page 19 Page 19 With the unit installed in a normal location (21°C ambient temperature) at the start of the freezing NOTE. The length of the defrost cycle (not adjustable) changes in accordance with the cycle the refrigerant suction or lo-pressure lowers rapidly to 1.0÷0.9 bars (14÷12 psig) then it duration of the second portion of the freezing declines gradually - in relation with the growing of... - Page 20 Page 20 Page 20 OPERATION - ELECTRICAL SEQUENCE HARVEST (Time Ts) The following charts illustrate which switches Water Drain Phase (15-20 sec.) and which components are ON or OFF during a particular phase of the icemaking cycle. Refer to the wiring diagram for a reference. Electrical components (Loads) ..
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Page 21: Component Description
NOTE. The ice maker, after the interruption Model Air Cooled Water Cooled of its operation due to the ice level control ACM 45 250 gr (9.0 oz) 250 gr (9.0 oz) cut-out always restarts from the beginnig of the freezing cycle. - Page 22 Page 22 Page 22 The Micro Processor of the P.C. BOARD has The P.C. BOARD is the brain of the system and also the important function to establish the length it elaborates, through its Micro Processor, the of the defrost cycle Ts in relation with the duration signals received from the two sensors in order to of the second phase of the freezing cycle or time control the operation of the different electrical...
- Page 23 -13°C (8.5°F) - OFF position (ACM 55) to -16°C (3°F) - ON position on model ACM 45. WATER INLET SOLENOID VALVE - 3/4 MALE FITTING...
- Page 24 Page 24 Page 24 WATER INLET SOLENOID VALVE - 3/4 By doing so it allows to the ice maker to make MALE FITTING (Water cooled version) every new freezing cycle with new fresh water, avoiding thereby the accumulation of sediments A second water inlet solenoid valve, operating and scales, which soon or later will cause the trough an automatic hi pressure control, is used...
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Page 25: Adjustment, Removal And Replacement Procedures
Page 25 Page 25 ADJUSTMENT, REMOVAL AND REPLACEMENT 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 through several complete freezing and... -
Page 26: Replacement Of Evaporator Temperature Sensor
Page 26 Page 26 REPLACEMENT OF EVAPORATOR Unloose the screws securing the pump TEMPERATURE SENSOR bracket to the unit frame. Remove front and top panel. Locate the plastic hose on the pump discharge port of the pump and disconnect it. Remove the evaporator cover and snap off the two metal clip securing the sensor probe to Unloose the nut and the jellow/green ground... -
Page 27: Replacement Of Water Drain Valve
Page 27 Page 27 REPLACEMENT OF THE CONDENSER REPLACEMENT OF PLASTIC CURTAIN WATER INLET SOLENOID VALVE (Water cooled models) Open the storage bin door to gain access to the curtain. Remove the rear panel. Remove the plastic curtain from the clips Close the shut-off valve on the water supply holding it, and take out. -
Page 28: Replacement Of Drier
Page 28 Page 28 Recover the refrigerant from the system REPLACEMENT OF AIR COOLED and transfer it in a container so to reclaim or CONDENSER recycle it. Remove front and rear panels. Unsolder the refrigerant lines from the hot gas valve body and remove it from the unit. Remove the two bolts attaching the condenser to the base. -
Page 29: Replacement Of Water Cooled Condenser
Page 29 Page 29 REPLACEMENT OF WATER COOLED REPLACEMENT OF COMPRESSOR CONDENSER Remove front and rear panels. Remove front and rear panels. Remove the cover and disconnect the Remove bolts which secure the condenser electrical leads from the compressor junction to the unit base. -
Page 30: Wiring Diagram
Page 30 Page 30 WIRING DIAGRAM ACM 45-55 -AIR AND WATER COOLED - 220-240/50/1 The unit is shown on freezing cycle - WHITE G - GREY N - BLACK - BLUE M - BROWN GV - YELLOW GREEN... -
Page 31: Service Diagnosis
Page 31 Page 31 SERVICE DIAGNOSIS SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION Unit will not run Blown fuse in P.C.Board Replace fuse & check for cause of (No warning LEDS glows) blown fuse Main switch in OFF position Turn switch to ON position Burn-out transformer Replace P.C. - Page 32 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 Shortage of water Water spilling out through curtain Check or replace curtain Water solenoid valve not opening...
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Page 33: Maintenance And Cleaning Instructions
Prepare the cleaning solution by diluting in will indicate frequency and procedure to be a plastic container one or two liters of warm water followed in local areas. (45°-50°C) with a 0,1-0,2 liters of SCOTSMAN Ice Machine Cleaner. - Page 34 Page 34 Page 34 Let the unit to remain in the CLEANING/ WARNING. The SCOTSMAN Ice Machine RINSING mode for about 20 minutes then turn Cleaner contains Phosphoric the program selector on STAND BY again. Hydroxyacetic acids. Flush out the cleaning solution from the...
- Page 35 Page 35 Page 35 on RESET/HI TEMPERATURE position and of the ice cubes and that, they do not have any immediately afterward FREEZING acid taste. OPERATION. ATTENTION. In case the ice cubes are NOTE. By setting the selector on RE-SET cloudy-white and have an acid taste, melt first and then to FREEZING OPERATION them immediately by pouring on them...
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