the switch opens due to a low refrigerant charge

Its magnetic clutch protects the motor by allowing it to stall at either end of the stroke without the need for mechanical stops or end switches

and upper spring seat

Industrial-Grade Build: Stamped steel and brass construction ensures a reliable seal and long-term performance under 30 PSI static pressure conditions

fitting brands like Imperial

Daikin-McQuay 065498401 Control 320720-756 the switch opens due toThe Daikin McQuay 065498401 Control is a heavy duty DPST HVAC controller engineered for precision temperature management within the 55 65F range. Designed for high performance commercial HVAC systems, this unit supports multi tap voltage configurations including 120V, 208V, and 240V AC, providing versatile power compatibility for retrofits and new installations alike. Its Double Pole Single Throw (DPST) architecture ensures reliable switching of both