Evaporator Replacement

1	Go through all steps to remove the gear	3	Disconnect electrical power.
	reducer.
		4	Remove control box cover
2	Add temporary refrigeration system access
	valves to the discharge and suction sides of the	5	Unplug all wires.
	refrigeration system .
		6	Remove screws holding controller to box.
3	Recover the refrigerant.
		7	Remove controller.
4	Un-sweat the suction line and cap tube
	connections from the evaporator.	8	Before touching replacement controller, touch a
			metal surface of the cabinet to discharge any
5	Remove original dryer.		static electricity.
6	Attach permanent access valves to system.	9	Place new controller in control box, connect all
			wires previously removed.
7	Attach dry nitrogen to system and purge at
	about 1 lb pressure while brazing all	10	Reverse remaining steps to reassemble.
	connections, including access valves, dryer
	and evaporator.	Ice level sensor
8	Remove nitrogen source, evacuate system to	1	Pull out to get access to top panel.
	300 microns or less.
		2	Remove top panel.
9	Weigh in the nameplate charge.
		3	Disconnect electrical power.
Water Reservoir
		4	Remove control box cover
1	Pull unit out to get access to top and back
	panel.	5	Unplug wire at J9.
2	Shut water supply off.		Ice Level
			Sensor
3	Pull drain plug and drain all water. Return plug

to its original position.

4Loosen nut at water valve inlet and separate inlet tube from reservoir valve.

5Pull outlet hose off reservoir tank.

6Remove screws holding reservoir to unit and lift off.

7	Reverse steps to reassemble.	6	Remove 5 screws and lift sensor from control
			box.
Controller
		7	Replace with new part.
1	Pull out to get access to top panel.
		8	Reverse remaining steps to reassemble.
2	Remove top panel.
		May 2011
		Page 18