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[. . . ] INTRODUCTION
This service manual covers the installation, operation, maintenance and service of this ice machine. Table of Contents
CSE60
SPECIFICATIONS· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 2 FOR THE INSTALLER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 3 FOR THE PLUMBER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 4 INSTALLATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 5 INITIAL START UP · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 6 HOW IT WORKS: · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 7 COMPONENT LOCATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 8 HOW IT WORKS: · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 9 HOW IT WORKS: · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 10 HOW IT WORKS: · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 11 OPERATION & ADJUSTMENT: OPERATING CHARACTERISTICS · · · · · · · · · · · · · · · Page 12 GRAPH OF SYSTEM PRESSURES · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 13 SANITIZING AND CLEANING · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 14 SERVICE DIAGNOSIS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 15 SERVICE DIAGNOSIS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 16 REMOVAL AND REPLACEMENT· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 17 REMOVAL AND REPLACEMENT· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 18
Service Parts lists and Wiring diagrams are located in the center of this manual, printed on yellow paper. This manual was printed on recycled paper. Note the Warning symbol, it marks a possible hazard.
June 2001 Page 1
CSE60
SPECIFICATIONS
17 9/16"
28 9/16"
5" to 5. 5" 18" 20. 5"
NAMEPLATE LOCATION
3/4" HOSE COUPLING THREAD 25/32" OD 2 . 2" POWER CORD 2 . 2"
SCOTSMAN
MODEL SERIAL VOLT AMP Hz PHASE Oz
REFRIGERANT
1 . 76"
3. 83" 5 . 4"
Refrigerant Charge is 9 ½ oz of R-134a. [. . . ] These parts are located on the discharge line of the compressor and are activated by the cube size control (harvest cycle). The harvest cycle is complete, and the freezing cycle restarts. The automatic ice making process continues until the bin is full of ice, and the bin thermostat senses a colder temperature. The bin thermostat then opens the circuit to all components and the automatic ice making process stops.
WATER TO EVAPORATOR
The ice cubes have been released from the inverted cube cups in the INLET WATER evaporator by the warming effect of the VALVE, OPEN hot refrigerant gas condensing in the DURING evaporator tubing, plus the incoming HARVEST water flowing around the inverted cups. The released ice cubes drop onto the spray platform and through the curtain assembly into the ice storage bin.
DRAINS
June 2001 Page 9
CSE60
HOW IT WORKS:
REFRIGERATION
FREEZE CYCLE The ice cubes are formed in an inverted mold that is refrigerated. The refrigeration process begins at the compressor. There, refrigerant vapor is compressed and flows from the compressor through the discharge line as a high temperature, high pressure gas. In the discharge line there is a strainer with two outlets, one leads to the condenser, and one to a solenoid valve. Because the solenoid valve is closed, the gas flows to the condenser, where heat is transferred from the refrigerant to the air passing through the condenser. The refrigerant then condenses into a high pressure liquid. From the condenser, the liquid refrigerant flows through the liquid line, and the liquid line filter-drier. After the filter drier, the liquid refrigerant enters the metering device, a capillary tube. After passing the restriction of the capillary tube, the refrigerant enters an area of relative low pressure, the evaporator. In the tubing of the evaporator, the liquid refrigerant expands and evaporates, absorbing heat from the evaporator tubing and anything in contact with it such as water sprayed against it. The refrigerant, now a low pressure, low temperature vapor, flows into the accumulator, which traps excess liquid refrigerant. The vapor, now primarily a gas, goes through the suction line tube to the compressor where the cycle is repeated.
EVAPORATOR
ACCUMULATOR
CAPILLARY TUBE SUCTION LINE
DISCHARG E LINE
CONDENSER
LIQUID LINE
STRAINER Refrigeration System Schematic June 2001 Page 10
COMPRESSOR
FILTER-DRIER
HOW IT WORKS:
REFRIGERATION
HARVEST CYCLE (When the cubes are released) The ice cubes have been formed in an inverted mold that was refrigerated. Now the refrigeration system will change to warm the cube mold and release the cubes. There, refrigerant vapor is compressed and flows from the compressor through the discharge line as a high temperature, high pressure gas. Before the gas gets to the condenser, it goes through a strainer, the strainer outlet is connected to two tubes, one of which leads to an electric valve, the hot gas solenoid. When this valve opens, the refrigerant gas follows the path of least resistance and flows through the tubing from the
EVAPORATOR
CSE60
hot gas valve to the evaporator, where the ice cubes are frozen. At the evaporator, the high temperature gases are cooled by the cold temperatures of the cube mold, and condense into liquid, transferring heat to the mold which warms up and releases the cubes. The refrigerant, now a low pressure, low temperature vapor, flows into the accumulator, which traps excess liquid refrigerant. [. . . ] Dismount bin thermostat from the control box 5. Pull bin thermostat capillary line from tube in ice storage bin. Remove complete control from ice machine. Replace with new control in reverse order of removal.
Cube Size Control
Cube Size Control Tube. [. . . ]
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