Understanding the Icemaker System
This document provides comprehensive information on the Sub-Zero 600 Series icemaker. It details the icemaker's system operation, its various components, and their functions within the ice-making cycle. Understanding these elements is crucial for proper diagnosis and maintenance.
Important Safety Note: Always disconnect electrical power to the unit before servicing the icemaker to avoid electric shock.
Key Icemaker Components and Functions
The icemaker system comprises several key components, each playing a vital role in producing ice:
- Support: Housing for electrical components and wire connections, attached to the ice mold.
- Mounting Plate: Houses the drive motor, holding switch, water valve solenoid switch, timing gear, timing cam, and water fill adjusting screw.
- Drive Motor: A 115-volt AC motor that powers the system, driving the timing gear.
- Timing Gear & Cam: Driven by the motor, the timing cam controls the operation of switches and the ice ejector.
- Ice Mold: Where the crescent-shaped ice cubes are formed.
- Mold Heater: Thaws the ice to release it from the mold.
- Ice Ejector: Rotates to sweep ice from the mold cavities.
- Ice Stripper: Prevents ice from falling back into the mold.
- Bearing/Inlet: Directs water into the ice mold and supports the ice ejector.
- Thermostat: A switch that closes at approximately 15°F to initiate the ice ejection phase.
- Thermal-Mastic: Enhances thermal conductivity between the thermostat and the ice mold.
- Lever Arm & Shut-off Arm: Control the quantity of ice produced by operating the shut-off switch.
- Water Valve Solenoid Switch: Energizes the water valve during the fill cycle.
- Holding Switch: Ensures the completion of a revolution once the motor is started.
- Shut-off Switch: Stops ice production when the ice bin is full.
- TCO (Thermal Cut Out): A safety device to protect against overheating.
Icemaker Operational Cycles
The document outlines the sequence of operations during the icemaker's cycle, including the start of the first revolution, continued operation, and the end of the ice-making cycle. It details how components like the thermostat, holding switch, and solenoid switch interact to manage water filling, ice ejection, and system shutdown.
Manual Operation and Adjustments
Instructions are provided for manually starting the icemaker for service purposes, bypassing the standard 45-minute delay. Additionally, guidance is given on adjusting the icemaker's water fill level, specifying the correct volume and how to use the water fill adjusting screw for precise control.
