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Scotsman FDE470 Service Manual

Scotsman fde470 ice machine: user guide
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FDE470 SERVICE MANUAL
Purpose of this manual: To provide detailed
installation and operation instructions; to give
insights into how the machine works; to list
possible causes for problems; and to suggest
procedures for specific types of service.
Specifications: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2
To The Installer: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
For The Electrician . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
For The Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5
Optional Kits: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
Wall Mount Kit (KWB1): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7
User Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
Refrigeration System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11
Water System Operation: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
Mechanical Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13
Maintenance: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14
Auger and Bearing Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15
Inspection: Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 16
Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 18
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 20
Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21
Water System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 22
Bearings, Water Seal and Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 23
Bearing Replacement: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 24
Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 25
Gear Reducer Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 26
Auger Drive Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 27
A Parts List and Wiring Diagram are located in the center of this manual, on yellow paper.
The FDE470 is an ice maker and dispenser
combined into one cabinet. The refrigeration
system is air cooled, using R-134a as a refrigerant.
The control system uses electric eyes as a bin
control and a water level sensor as the water
safety control. As ice is made, it fills a plastic
storage bin. When ice is needed, a motor rotates a
stainless steel vane inside the storage bin and
sweeps the ice into the spout.

Table of Contents

August 1994
Page 1
FDE470

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Summary of Contents for Scotsman FDE470

  • Page 1: Table Of Contents

    Auger Drive Motor ......... . Page 27 A Parts List and Wiring Diagram are located in the center of this manual, on yellow paper. The FDE470 is an ice maker and dispenser combined into one cabinet. The refrigeration system is air cooled, using R-134a as a refrigerant.

  • Page 2: Specifications

    A stainless steel panel kit may be installed at the field level to change the finish to stainless steel. The kit number is: SPKFD470 Scotsman ice machines, like the FDE470, are designed to be installed indoors, in a controlled environment. The minimum and maximum...

  • Page 3: To The Installer

    A professional installation of any product is critical to the long term satisfaction of the user. The FDE470 is designed to be installed either on a counter, or, using a wall hanging kit, hung from a wall. Another option is a kit to increase the cabinet height which will allow taller containers to be placed under the spout.

  • Page 4: For The Electrician

    Electrical connections: Check the nameplate for voltage and current requirements. An electrical cord is not supplied. Connect the FDE470 to a separate electrical circuit. Wiring to the machine must conform to all codes. A licensed electrician may be required in some situations.

  • Page 5: For The Plumber

    Follow all local codes. Water Supply Overflow Drains Water Inlet Fitting (Inside Cabinet) Strainer or Filter Bin and Reservoir August 1994 Page 5 FDE470 FOLLOW ALL APPLICABLE LOCAL, STATE AND NATIONAL CODES Sink Drain Building Drain (Typical)

  • Page 6: Optional Kits

    FDE470 Optional Kits: Sink Extension (KDE1 enamel or KDE1SS stainless steel): 1. Remove the standard sink and splash panel from the cabinet. 2. Remove the glass filler lever and holder. 3. Remove drain tube from standard sink. 4. Install drain tube onto replacement sink.

  • Page 7: Wall Mount Kit (Kwb1)

    Installation: Check building wall for the strength required to support a machine of the FDE470’s weight and size. Note that if at least 6" of space is not left above the machine, cleaning and most service of the machine will require removal of the machine from the wall mounts.

  • Page 8: Final Check List & Initial Start Up

    10. Explain to the user the maintenance requirements and operation of the machine. 11. Fill out the Warranty Registration and Customer Evaluation form. Mail it to Scotsman. 12. Leave the service manual with the owner/user and explain who should be called if service is needed.

  • Page 9: User Operation

    User Operation The FDE470 is an automatic ice vending machine. All it requires is cool air, clean water and an adequate supply of electrical power. To Vend Ice: Push the glass filler lever in and hold it in until the container is full of ice.

  • Page 10: Component Location & Function

    Evaporator Auger Drive Condenser. The FDE470 uses an air cooled condenser. It blows Compressor air out, away from the fan motor. Bin Cover The heat removed from the water is exhausted from the condenser.

  • Page 11: Refrigeration System Operation

    At the compressor the cycle is repeated. The FDE470 uses a low side pressure control as a safety, it will shut the system down if the suction pressure is too low for reliable operation.

  • Page 12: Water System Operation

    FDE470 Water System Operation: The water system consists of a float valve, reservoir and water dispense solenoid valve. The water level in the reservoir tank is the same level as that inside the evaporator. Building water supply flows to both the float valve and the solenoid. The float valve will open to add water to the reservoir as water flows out to the evaporator.

  • Page 13: Mechanical Operation

    Mechanical Operation General: The FDE470 makes, stores and dispenses ice. It also dispenses water. The ice making portion of the machine produces flaked ice at about 32 The ice falls thru a chute into the dispensing bin. Above the cylindrical bin is a dispense drive motor and electric eyes.

  • Page 14: Maintenance

    2. Remove top and right side panels. 3. Unplug or disconnect electrical power. 4. Shut off water supply. 5. Drain reservoir. 6. Mix 8 ounces of Scotsman Ice Machine Cleaner and 3 quarts of hot (95 F. -115 Scotsman Ice Machine Cleaner contains acids.

  • Page 15: Auger And Bearing Inspection

    Auger and Bearing Inspection While in most areas regular in-place cleaning with Scotsman Ice Machine Cleaner will be adequate to keep the interior of the evaporator free of excessive mineral build up, some water conditions may require more intense methods. In addition, the auger bearings require physical inspection to determine that they are not wearing.

  • Page 16: Inspection: Auger

    There should be minimal rust or dirt. If in doubt, replace the bearing. Note: The top bearing used in the FDE470 is a "directional" bearing. Note which way the inner race is configured and install into the breaker. The breaker is also available as a replacement part with the top bearing already installed.

  • Page 17: Water Level Sensor

    "look" at the ice. If clouded by mineral scale, the eyes will cause the ice machine to shut off and stay off. To clean the photo-electric eyes.

  • Page 18: Service Diagnosis

    FDE470 Service Diagnosis PROBLEM No ice is dispensed. POSSIBLE CAUSE No ice in bin due to: No electrical power Overuse Water supply turned off Bin controls dirty Water sensor dirty Control system malfunction Auger drive motor open Centrifugal switch open...
  • Page 19 Gear motor does not turn Centrifugal switch does not close Fan motor does not turn Lack of refrigerant Compressor does not pump August 1994 Page 19 FDE470 PROBABLE CORRECTION Clean water system with ice machine cleaner. Grease coupling Replace coupling and adapter stand.

  • Page 20: Electrical System

    If the gear motor relay is not closed (Com to NO), there is a potential problem with the control circuit. Scotsman has a circuit tester that can be plugged in to replace the water level sensor and the electric eyes. Use it or use replacement sensors to determine if the fault is at the water level sensor, the electric eyes or in the circuit board.

  • Page 21: Removal And Replacement

    Perform steps 1-5 above (to remove the dispense vane). 1. Lift bin bottom out of the dispense bin. 2. When replacing, be sure that the slot on the bin bottom is over the dispense chute (at the front). August 1994 Page 21 FDE470 Bin Top...

  • Page 22: Water System

    FDE470 Water System The water system consists of the reservoir and inlet water valve. Reservoir. 1. Shut off the water supply. 2. Remove the top panel. 3. Remove the right side panel. 4. Drain the water reservoir and evaporator. 5. Disconnect inlet and outlet tubes from the reservoir.

  • Page 23: Bearings, Water Seal And Auger

    1/3 of the vertical rifle grooves are gone. Sand or hone and sand the inside of the evaporator if mineral build up is heavy. Water Seal Coupling August 1994 Page 23 FDE470 Snap Ring Bolt Washer Top Bearing Breaker Auger...

  • Page 24: Bearing Replacement

    1. Remove old rotating half from the auger. Clean the mounting area. 2. Place a bead of food grade sealant (such as Scotsman part number 19-0529-01) onto the shoulder of the auger where the rotating half of the water seal will be installed.

  • Page 25: Refrigeration System

    Refrigeration System This ice machine uses R-134a as the refrigerant. This refrigerant has no chlorine, and therefore requires polyolester type refrigerant oil. This oil requires specific service procedures. General Service A HFC type liquid line drier is required. "Standard" driers may not take out enough moisture and may affect the oil additives.

  • Page 26: Gear Reducer Removal

    FDE470 Gear Reducer Removal 1. Disconnect electrical power. Electrical Shock Hazard Disconnect electrical power before beginning. 2. Shut off the water supply. 3. Remove the top and side panels. 4. Remove the control box cover. 5. Remove the centrifugal switch cover on the top of the auger drive motor.

  • Page 27: Auger Drive Motor

    If rusty or water is present, replace the complete assembly. The oil should be black and the proper oil level is 1/8" from the top of the biggest gear (with all gears installed). Check the input seal. The gears may be replaced individually. August 1994 Page 27 FDE470...
  • Page 28 FDE470 August 1994 Page 28...

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