Description
The Heatcraft 5709L Defrost Time-Delay and Termination Switch is a temperature-responsive refrigeration control designed for compatible Heatcraft defrost systems. The switch closes at 35°F and opens at 55°F, helping coordinate defrost termination and related control functions as the evaporator coil temperature changes during and after the defrost cycle.
Standard Features:
- Closes at 35°F
- Opens at 55°F
- Provides temperature-responsive defrost control
- Supports defrost termination and time-delay functions
- Helps coordinate the transition back to normal refrigeration operation
- Designed for compatible Heatcraft commercial refrigeration equipment
- Replacement component for worn or inaccurate defrost switches
Application and Service Features:
- Suitable for cooler, freezer, and unit cooler defrost systems
- Helps restore proper temperature-based switching operation
- Opening and closing temperatures should match the original equipment requirements
- Sensor position and mounting location should match the existing installation
- Related wiring and terminals should be inspected during replacement
- System should be tested through a complete defrost and refrigeration cycle
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