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Since the switch closes at 45°F and opens at 55°F
allowing you to manage twice the amount of circuit paths compared to a standard DPDT model within a single housing
the safety circuit cannot be completed
The ST-10 is rated for duct widths between 8 ft and 12 ft
often indicating the switch is stuck open or tripped due to airflow issues
Heil Quaker ICP 1171426 Motor Pulley Since the switch closes atThe Heil Quaker ICP 1171426 Motor Pulley is a high grade variable pitch sheave designed for precise HVAC blower speed adjustment in commercial and residential fan drive systems. As a genuine ICP OEM replacement part, this cast iron pulley features a robust 1VL40x5 8 configuration, providing a 5 8 inch finished bore with a standard keyway for secure attachment to the blower motor shaft. The 3. 75 inch outside diameter enables contractors to fine tune