Cornelius 322 Service/Installation Manual
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Cornelius 322 Service/Installation Manual

Cornelius 322 Service/Installation Manual

Ice cube machine
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SERIES 322
ICE CUBE MACHINE
Service/Installation
Guide
Part No. 166240008
March 17, 1995
THIS DOCUMENT CONTAINS IMPORTANT INFORMATION
This Manual must be read and understood before installing or operating this equipment
IMI CORNELIUS INC; 1995
Ó
PRINTED IN U.S.A

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  • Page 1 SERIES 322 ICE CUBE MACHINE Service/Installation Guide Part No. 166240008 March 17, 1995 THIS DOCUMENT CONTAINS IMPORTANT INFORMATION This Manual must be read and understood before installing or operating this equipment IMI CORNELIUS INC; 1995 Ó PRINTED IN U.S.A...

  • Page 2: Table Of Contents

    SAFETY INFORMATION ..........SPECIFICATIONS .
  • Page 3 TABLE OF CONTENTS (cont’ d) FLOODING TXV - PRODUCT SYMPTOMS WATER REGULATING VALVE SERVICE STEM VALVES ..........MOISTURE CONTAMINATION COMPRESSOR CONTACTOR COMPRESSOR &...

  • Page 4: Safety Information

    SAFETY INFORMATION Recognize Safety Information This is the safety-alert symbol. When you see this symbol on our machine or in this manual, be alert to the potentially of personal injury. Follow recommended precautions and safe operating practices. Understand Signal Words A signal word - DANGER, WARNING, OR CAUTION is used with the safety-alert symbol.
  • Page 5 THIS PAGE LEFT BLANK INTENTIONALLY 166240008 3/17/95...

  • Page 6: Specifications

    1. Uncrate machine and/or bin by removing the staples from around the bottom of cardboard crate and lift off. 2. Remove bolts fastening the crate skid to the bottom of the unit. If auxiliary legs have been purchased for the bin, they should be installed at this time. 3/17/95 322 SERIES 15.00 6 FT ELEC- TRICAL...

  • Page 7: Leveling

    1. Take off front panel of machine and remove hardware bag and service manual envelope. 2. Mount the ice maker to the top of the ice storage bin or adapter in the proper position over the ice drop opening. The ice maker must then be sealed both on the outside and the inside bottom edges with an ap- proved N.S.F.

  • Page 8: Make Electrical Power Supply Connection

    MAKE ELECTRICAL POWER SUPPLY CONNECTION Requirements: 115V/60 Hz 1 ph., 230V/60 Hz. 1 ph., or 220V/50 Hz. 1 ph when used. Refer to serial plate for minimum circuit ampacity and maximum time delay fuse size. All wiring must conform to national and local electrical codes. MAKE PLUMBING CONNECTIONS Water supply -- (install per local codes) (See diagram 3).

  • Page 9: Drain

    The Float Valve is mounted in a fixed position thru it’ s mounting bracket to maintain the proper water level in the water reservoir. For the 300 & 322 series units the bracket is mounted thru the bottom hole of the bracket.

  • Page 10: Starting The Unit

    RESERVOIR 1/4” WATER LEVEL Ice maker will not operate properly when water supply temperature is below WARNING: 50_ F. or above 100_ F. Water supply flowing pressure must not exceed 50 PSI. STARTING THE UNIT After the ice cuber has been unpacked and leveled and all plumbing and electrical connections have been made, start the unit, and check for proper operation.

  • Page 11: Installation Instructions For Mounting On Drink Dispensers

    Also check to see if the float valve is functioning properly and the correct water level is being maintained. Adjust if necessary. 2. Check the refrigerant circuit by making sure that the condenser fan is running. (This will be evident by air noise) Is the compressor running? (Feel the casing for vibration).

  • Page 12: Sanitizing And Cleaning Procedure

    Using a non--metallic bristle brush, scrub the following: Inside surface of the ice bin including top and door. Inside surface of the ice maker to include evaporator section in the ice machine including the top, front panel and evaporator splash curtain.

  • Page 13: Water Treatment

    WATER TREATMENT Depending on the water source for the ice maker, water treatment may be necessary to prevent calcium or lime scale deposits, bad taste and odor, chlorine problems, as well as slime growth. If these conditions exist, contact your Cornelius Distributor or Dealer for information on water treatment systems Cornelius offers.

  • Page 14: Operating Characteristics

    AVERAGE OPERATING CHARACTERISTICS IP Units FREEZE CYCLE HEAD SUCTION AMBIENT WATER PRES- SURE TEMP TEMP Psig SI Units FREEZE CYCLE HEAD SUCTION PRES- AMBIENT WATER TEMP TEMP SURE 1151 1365 1579 1593 1768 AVERAGE OPERATING CHARACTERISTICS IP Units FREEZE CYCLE HEAD SUCTION AMBIENT...

  • Page 15: Refrigeration/Water System Models Ac322

    3/17/95 166240008...

  • Page 16: Refrigeration And Water System Model Wc322

    3/17/95 166240008...

  • Page 17: Dump Cycle

    DUMP CYCLE RESERVOIR WATER LEVEL 1. With the proper water level in the water pan, start the water pump to circulate the water. Check that the float will return water level to original setting and stop inlet water. 2. Push the manual dump switch -- allow dump action to drain the water pan. When you release the momen- tary switch, the pump will stop and the float will return the water level back to its original setting and shut off the water supply.

  • Page 18: Adjusting Bridge Thickness

    Always wait for the second cycle before making any adjustments. TOTAL ICE CAPACITY Ice capacity of any ice maker is affected by many operating conditions, such as water and air temperature and location factors. Please review the capacity tables in this manual for average 24-hour capacity under various conditions.

  • Page 19: Led Indicators

    Cycle time (CT) = freeze time plus harvest time, in minutes and seconds. 1440 divided by CT = number of cycles per 24 hours. Measure weight of ice from one cycle in pounds and fractions of a pound. Example: Weight/cycle x cycles/day = total production/24 hrs. Compare to the production tables * If water cooled, be certain water regulator valve is set to maintain 225/235 PSI head pressure.

  • Page 20: Harvest Mode

    Red LED (on) EVAPORATOR HIGH TEMP. ERROR: Six minutes into the Freeze cycle the suction line tempera- ture failed to reach 40° F or below. Ice Maker is SHUT DOWN. Consult service manual (Diagnostic Section) for troubleshooting guide. Red LED (on) TWO REPEATED FAILED HARVEST CYCLES - No ice drop.

  • Page 21: Circuit Board Diagnosis

    CIRCUIT BOARD DIAGNOSIS Turn the power switch OFF, and center position. Disconnect the proximity switches and thermistors from the circuit board. Remove a sleeve jumper from the options terminal and place it on terminals 4 and 5 of the test plug.

  • Page 22: Component Function

    COMPONENT FUNCTION TEST PLUG Board manufactures check point. DO NOT ATTEMPT ANY VOLTAGE CHECKS AT THESE PINS. SENSORS Condenser sensor (white) and suction line sensor (brown) are thermistors rated 1k ohm at room temperature. S Condenser sensor signals the circuit board for fan cycling and also serves as the high temperature safety shut down.

  • Page 23: Voltage Selector Switch

    VOLTAGE SELECTOR SWITCH 1. Selector bar in center position, switch is open. Product is inoperative. 2. Selector bar in down position, selection is for 115 VAC. 3. Selector bar in up position, selection is for 230 VAC. SENSOR [THERMISTOR] DIAGNOSIS Sensors Condenser or suction line -- Turn Cuber power switch OFF.

  • Page 24: Starving Txv - Product Symptoms

    6. Ventilation problems The expansion valves used on Cornelius “ I”series ice equipment have special super heat settings and bulb charge designed from the product load and HP 62 refrigerant. Should the need arise to replace this or any re- frigerant components, be certain to use only components recommended by Cornelius for the model of the Cub- er being serviced.

  • Page 25: Service Stem Valves

    The water regulating valve must close off condenser water flow completely during the “ hot gas”harvest cycle. There should be no discharge water flowing out of the condenser during the harvest cycle. Should the valve fail to close during the harvest mode, the condenser will continue to condense the compressor discharge vapor needed for the harvest cycle and this will result in long harvest times.

  • Page 26: Compressor Contactor

    Readings in the range listed below 100 Meg-Ohm would be an indicator that the system being tested may have a contamination problem. Where does the problem come from? As an example, the filter drier may become sat- urated and hold large percentages of moisture and the system function without a problem until such time as the product operating conditions change.

  • Page 27: Capacitors

    For the current type, contacts are normally open. The start contacts close by the high current draw from the locked rotor condition with only the run winding in the circuit. As the contacts close, the start capacitor and the start winding is energized and the compressor starts. At approximately 80% of its operating speed the current draw drops off, the relay contacts open removing the start winding and start capacitor from the circuit.

  • Page 28: Leak Detection

    Leak Detection The new non-chlorine based refrigerants [HP - 62/R 404A] require special leak detection devices other than what has been standard for the CFC’ s. While the instruments for leak detection are different, the processes have not changed. Basics to remember: 1.
  • Page 29 The system should be evacuated to approximately 200/250 microns. Then perform a 5 minute holding test. You may expect a low grade loss of the vacuum as normal. However, a rapid rise to normal atmospheric pressure would signal a system leak is present and must be located and repaired before recharging the product. A slower pressure rise to approximately 1500 microns would signal moisture still present in the refrigeration system.

  • Page 30: Condenser Fan Cycling Control

    Chemical analysis is the key requirement to the definition of “ Reclaim” . Regardless of the purity levels reached by a re-processing method, the refrigerant is not “ reclaimed”unless it has been chemically analyzed and meets ARI Standard. CONDENSER FAN CYCLING CONTROL The condenser fan on air-cooled cubers is cycled by the circuit board.

  • Page 31: Warranty

    The obligation of CORNELIUS under this warranty is limited to repair or replacement (at the option of CORNELIUS) FOB factory in Mason City, Iowa of the part (or Parts) of any Machine that is proven defective.
  • Page 32 IMI CORNELIUS INC. Corporate Headquarters: One Cornelius Place Anoka, Minnesota 55303-6234 Telephone (800) 238-3600 Facsimile (763) 422-3246...

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