My fire department inspector says we need a switch inside the walk in freezers to kill the evaporator fans in case someone gets trapped inside.
These are normal pump down type systems. One evaporator is 120 volt but the other one is 220 volt.
I assume I'd want to kill the liquid line solenoid too. Not too sure if I need a mushroom head push/pull switch with low voltage wiring leading to a contactor. Maybe a line voltage toggle switch is good enough?