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