SM/SV-Space Master Unit Coolers (E316008_B)
17
1.
Power is supplied to the unit cooler continuously.
2.
Hot gas is supplied to the unit via the suction line. A factory-mounted thermostat senses a rise in coil
temperature. The SPDT control turns off the fan motors. If the unit has a drain pan heater, the other portion
of the SPDT control is now closed and the drain pan heater is energized.
3.
When the defrost is complete the hot gas supply is stopped. The liquid line solenoid is energized and the coil
temperature begins to fall.
4.
The factory-mounted thermostat senses the drop in coil temperature. The SPDT thermostat opens the circuit
to the drain pan heater (when supplied) and closed the circuit to the fan motors.
Figure 12 (P) KGE (2 Pipe) Kool Gas Coil and Electrical Drain Pan Wiring
