Manitowoc CMS050A004 Spécifications

CM050 CM Model Ice Machines This manual is updated as new Information and models are released Visit our website for the lates

10 OWNER WARRANTY REGISTRATION CARD GENERAL The packet containing this manual also includes warranty information. Warranty coverage begins the day you

11 This limited warranty only applies to the original Purchaser of the Product and is not transferable. This limited warranty is valid only in the Uni

12 IN NO EVENT SHALL MANITOWOC ICE OR ANY OF ITS AFFILIATES BE LIABLE TO THE PURCHASER OR ANY OTHER PERSON FOR ANY INCIDENTIAL, CONSEQUENTIAL OR SPECI

13 INSTALLATION LOCATION OF ICE MACHINE The location selected for the ice machine must meet the following criteria. If any of these criteria are not m

14 ICE MACHINE HEAT OF REJECTION Heat of Rejection* Air Conditioning** Peak 1,145 2,300 * B.T.U./Hour ** Because the heat of rejection

15 LEVELING THE ICE MACHINE After moving the ice machine into the installation location, it must be leveled for proper operation. Follow these steps t

16 WATER SERVICE/DRAINS WATER SUPPLY Local water conditions may require treatment of the water to inhibit scale formation, filter sediment, and remove

17 WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS Tubing Size Up to Ice Machine Fitting 1/4" (.64 cm) min. inside diameter 3/4" (1.9 cm) mi

18 ELECTRICAL REQUIREMENTS VOLTAGE The maximum allowable voltage variation is ±10% of the rated voltage on the ice machine model/serial number plate a

19 Bin L ightWater Sh uttersWate r Trou ghBinBin Thermostat Adjust mentGrillCont rol P anelEvaporator CompartmentElectricalDrain Pu mp (Optio nal)Wat

2Safety Notices When using or servicing these Ice Machines, be sure to pay close attention to the safety notices in this handbook. Disregarding the

20 Wat er Shutter AssemblyEvaporatorWate r PumpWater Supply LineSpray BarSpray NozzlesWater Shutt ersControl BoardEvaporator BucketNot e: Evap orato

21 OPERATIONAL CHECKS Routine adjustments and maintenance procedures outlined in this manual are not covered by the warranty WATER INLET VALVE The wa

22 SAFETY TIMERS The control board has the following non-adjustable safety timers: • Initial cycle is 5 minutes longer than subsequent cycles. • The

23 MAINTENANCE ICE MACHINE INSPECTION Check all water fittings and lines for leaks. Also, make sure the refrigeration tubing is not rubbing or vibrati

24 AIR-COOLED CONDENSER A dirty condenser restricts airflow, resulting in excessively high operating temperatures. This reduces ice production and sh

25 INTERIOR CLEANING AND SANITIZING CAUTION Use only Manitowoc approved Ice Machine Cleaner (part number 000000084 clear metal safe ice machine clea

26 INTERIOR CLEANING AND SANITIZING GENERAL Perform an In Place Cleaning/Sanitizing procedure monthly and a Cleaning/Sanitizing procedure every 12 mon

27 Step 2 Press the clean switch. The ice machine will initiate a 2 minute harvest to remove any remaining ice from the evaporator. Step 3 Remove all

28 CLEANING PROCEDURE Ice machine cleaner is used to remove lime scale and other mineral deposits. Ice machine sanitizer disinfects and removes algae

29 Step 7 Take all removed components to a sink for cleaning. Use 1/2 of the cleaner/water mixture to clean all components. The cleaner solution will

3Procedural Notices When using or servicing these Ice Machines, be sure to read the procedural notices in this handbook. These notices supply helpfu

30 Step 15 Wait 3 minutes until the Clean light flashes, then add the prepared Manitowoc Sanitizer by lifting the water shutters and pouring directly

31 REMOVAL OF PARTS FOR CLEANING AND SANITIZING TOP COVER 1. Remove two back screws. 2. Slide back and lift cover off. WARNING Disconnect electric

32 WATER SHUTTERS The water shutter is designed to keep the spraying water from escaping the evaporator compartment. To remove just the water shutter

33 ICE CHUTE The ice chute is positioned over the spray nozzles and allows the ice to easily fall into the bin. It must be firmly positioned over the

34 SUMP DRAIN OVERFLOW TUBE 1. Remove clamp. 2. Pull down to remove overflow tube and tubing as an assembly. The sump trough water will drain into th

35 WATER TROUGH 1. Depress tabs on right and left side of the water trough. 2. Allow front of water trough to drop as you pull forward to disengage

36 SPRAY BAR, WATER PUMP AND HOSE Remove spray bar clamp and spray bar. 1. Grasp pump and pull straight down until water pump disengages and electric

37 SPRAY BAR DISASSEMBLY The spray bar supplies water to the individual ice making cups. Water from the water pump sprays through the nozzles, located

38 REMOVAL FROM SERVICE/LONG TERM STORAGE/WINTERIZATION GENERAL Special precautions must be taken if the ice machine is to be removed from service for

39 ICE MAKING SEQUENCE OF OPERATION Depending on ambient conditions and cold water supply temperature, the ice making process will take approximately

4Read These Before Proceeding: CAUTION Proper installation, care and maintenance are essential for maximum ice production and trouble free operatio

40 ENERGIZED PARTS CHART SELF-CONTAINED ICE MACHINES Length of “ON” Time 175 seconds 5 seconds Automatically determined Automatically determined Unt

41 TROUBLESHOOTING DIAGNOSING AN ICE MACHINE THAT WILL NOT RUN WARNING High (line) voltage is applied to the control board (terminals #20 and #21) a

42 5. Verify the “Power” switch functions properly. • If the red control board light is energized and depressing the “Power” switch does not energi

43 ICE MACHINE WILL NOT HARVEST 1. Verify cubes are present in evaporator and freeze time exceeds freeze chart cycle time. • Initial freeze cycle af

44 ICE QUALITY IS POOR – CUBES ARE SHALLOW, INCOMPLETE OR WHITE Problem • Cause Ice machine is dirty • Clean and sanitize the ice machine Water filtr

45 FREEZE CYCLE IS LONG, LOW ICE PRODUCTION Problem • Cause Water temperature is too high • Connect to a cold water supply, verify check valves in fa

46 ICE MACHINE RUNS & NO ICE IS PRODUCED Problem • Cause No water to ice machine • Correct water supply Incorrect incoming water pressure • Water

47 ANALYZING DISCHARGE PRESSURE 1. Determine the ice machine operating conditions: Air temp. entering condenser ______ Air temp. around i

48 DISCHARGE PRESSURE HIGH CHECKLIST Problem • Cause Improper Installation • Refer to “Installation/Visual Inspection Checklist” Restricted Condense

49 ANALYZING SUCTION PRESSURE The suction pressure gradually drops throughout the freeze cycle. The actual suction pressure (and drop rate) changes as

5TABLE OF CONTENTS GENERAL INFORMATION... 7 MODEL NUMBERS...7 ACCESSORIES...

50 PROCEDURE Step . 1. Determine the ice machine operating conditions. Air temp. entering condenser: 90°F/32.2°C Air temp. a

51 SUCTION PRESSURE HIGH CHECKLIST Problem • Cause Improper Installation • Refer to “Installation/Visual Inspection Checklist” Discharge Pressure •

52 HOT GAS VALVE General The hot gas valve is an electrically operated valve that opens when energized, and closes when de-energized. Normal Operatio

53 HOT GAS VALVE ANALYSIS The valve can fail in two positions: • Valve will not open in the harvest cycle. • Valve remains open during the freeze cy

54 EXAMPLES OF HOT GAS VALVE INLET/COMPRESSOR DISCHARGE LINE TEMPERATURE COMPARISON Findings Comments The inlet of the hot gas valve is cool enough t

55 BIN THERMOSTAT Function The bin thermostat stops the ice machine when the bin is full. The level of ice in the ice storage bin controls the ice mac

56 Check Procedure WARNING High (line) voltage is applied to the control board (terminals #20 and #21) at all times. Removing the control board fuse

57 ICE PRODUCTION CHECK The amount of ice a machine produces directly relates to the operating water and air temperatures. This means an ice machine

58 ADJUSTING CUBE WEIGHT The cube weight can be increased from the factory setting by adjusting the finish time. Additional finishing time check: Pres

59 LIQUID LINE THERMISTOR Function The liquid line thermistor senses the refrigeration system liquid line temperature. This is used in conjunction wit

6HOT GAS VALVE... 52 BIN THERMOSTAT... 55 ICE PRODUCTION CHECK ...

60 TEMPERATURE/RESISTANCE CHART As the temperature rises at the thermistor block, the resistance drops. IMPORTANT If the ohmmeter reads “OL,” check th

61 TOTAL SYSTEM REFRIGERATION CHARGE IMPORTANT This information is for reference only. Refer to the ice machine serial number tag to verify the syste

62 COMPONENT SPECIFICATIONS AND CHECK PROCEDURES MAIN FUSE Function The control board fuse stops ice machine operation if electrical components fail

63 COMPRESSOR ELECTRICAL DIAGNOSTICS The compressor does not start or will trip repeatedly on overload. CHECK RESISTANCE (OHM) VALUES NOTE: Compresso

64 COMPRESSOR DRAWING LOCKED ROTOR The two likely causes of this are: • Defective starting component • Mechanically seized compressor To determine w

65 DIAGNOSING START COMPONENTS: If the compressor attempts to start, or hums and trips the overload protector, check the start components before repla

66 CYCLE TIMES, 24 HR ICE PRODUCTION AND REFRIGERANT PRESSURE CHARTS These charts are used as guidelines to verify correct ice machine operation. Ac

67 NOTE: THESE CHARACTERISTICS MAY VARY DEPENDING ON OPERATING CONDITIONS. Cycle Times Freeze Time + Harvest Time = Cycle Time FREEZE TIME WATER TEMP

68 REFRIGERANT DEFINITIONS Recover To remove refrigerant, in any condition, from a system and store it in an external container, without necessarily t

69 REFRIGERANT RE-USE POLICY Manitowoc recognizes and supports the need for proper handling, re-use, and disposal of, CFC and HCFC refrigerants. Manit

7 GENERAL INFORMATION MODEL NUMBERS This manual covers the following models: CMS050A004 WARNING An ice machine contains high voltage electricity an

70 4. Recovered refrigerant must come from a “contaminant-free” system. To decide whether the system is contaminant free, consider: • Type(s) of pr

71 Refrigerant Recovery/Evacuation/Charging Do not purge refrigerant to the atmosphere. Capture refrigerant using recovery equipment. Follow the manu

72 IMPORTANT Manifold gauges must be removed properly to ensure that no refrigerant contamination or loss occurs. A quick disconnect is required for

73 Charging Procedures IMPORTANT The charge is critical on all Manitowoc ice machines. Use a scale to ensure the proper charge is installed. A quick

74 9. Make sure that all refrigerant in the charging hose is drawn into the ice machine before disconnecting the manifold gauge set. A. Drain the w

75 SYSTEM CONTAMINATION CLEANUP GENERAL This section describes the basic requirements for restoring contaminated systems to reliable service. IMPORT

76 Contamination/Cleanup Chart Symptoms/Findings Required Cleanup Procedure No symptoms or suspicion of contamination Normal evacuation/recharging pr

77 MILD SYSTEM CONTAMINATION CLEANUP Procedure 1. Replace any failed components. 2. If the compressor is good, change the oil. 3. Replace the liqu

78 SEVERE SYSTEM CONTAMINATION CLEANUP PROCEDURE 1. Remove the refrigerant charge. 2. Remove the compressor. 3. Wipe away any burnout deposits from

79 9. Charge the system with the proper refrigerant to the nameplate charge. 10. Operate the ice machine for one hour. Then, check the pressure drop

8 ACCESSORIES Visit our website at: www.compact-ice.com for these optional accessories: LEGS Four inch adjustable legs are available. DRAIN PUMP Pumps

80 REPLACING PRESSURE CONTROLS WITHOUT REMOVING REFRIGERANT CHARGE This procedure reduces repair time and cost. Use it when any of the following compo

81 Using Pinch Off Tool FIG. A - “PINCHING OFF” TUBINGFIG. B - RE-ROUNDING TUBING SV1406

82 BRAZING PROCEDURES FOR DANFOSS SOLENOID VALVES • Danfoss stainless steel solenoid valves require a slightly different brazing technique than brass

83 4. Apply heat to copper tubing first and move flame toward valve socket. A. Heat copper tubing for approximately 10 to 15 seconds then dir

84 FILTER-DRIERS Liquid Line Filter Drier The filter-drier used on Manitowoc ice machines are manufactured to Manitowoc specifications. The difference

85 THERMISTOR FUSE (7A) BIN LIGHT SWITCH BIN THERMISTAT CONNECTIONDISPLAY BOARD CONNECTION BIN LIGHT CONNECTION TRANSFORMER CONTROL BOARD

86 WIRING DIAGRAMS CAUTION: DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE L1 (22) BIN LIGHT SWITCH (33) (

87 TUBING SCHEMATIC EVAPORATORHEAT EXCHANGER HOT GAS SOLENOID VALVE CAP TUBE CONDENSER COMPRESSOR DRIER

88 Compact Ice by Manitowoc Manitowoc WI 54221-1720 Phone: 1-800-235-9698 Website – www.compact-ice.com ©2006 Manitowoc Ice, Inc.

9 MODEL/SERIAL NUMBER LOCATION The model and serial numbers are required when requesting information from your local Compact retailer or Compact Ice a