Hussmann Proto-Aire Installation Manual page 65

Evaporator Mounted Refrigeration Solenoid
Power for refrigeration solenoids at the evaporator comes from the Protocol™ case
electrical terminal pins located in the main control panel.
Cooler Door Switch Wiring
Check the store legend for door switch kits
the cooler doorframe, and controls the field installed liquid line solenoid and evaporator
fans. For Gas Defrost applications, M116 includes a check valve to bypass the liquid line
solenoid valve.
Panel Voltages
The Protocol™ Control Panels contain voltages:
(M115 or
24V PC Board, POWERLINK™
Control Circuits
Electronic oil level control
120V Control Circuits
and
208/230V
380V
460V or 575V Power Supply Circuits
61
Protocol™ Installation and
Service Manual
M116). The switch is mounted to