Common indicators include intermittent valve operation

Is the lens replaceable

reducing installation time during field service

plate mounting on 2"x4" or 4"x4" outlet boxes

it enables versatile circuit logic—common for fan speed changeover or triggering an auxiliary alarm during a high-heat event

Heil Quaker ICP 1171426 Motor Pulley Common indicators include intermittent valveThe 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