Replacing The Evaporator Assembly - EdgeStar CWB8420DZ Service Manual

8.8 Replacing the Evaporator Assembly

NOTE: Before replacing any component of the refrigeration system, make sure to read the
instructions "Service Precautions for R600a System".
1. Disconnect unit from its power source.
2. Remove all R600a from the unit in a well ventilated area.
3. Clean and desolder the filter dryer from the system.
4. Remove all shelves.
5. Remove the panel(s) from the back of the cabinet.
6. Remove the two brackets that fix the evaporator assembly to the cabinet.
7. Remove the evaporator assembly from the cabinet and install the new one.
8. After replacing the evaporator assembly, make sure to reinstall the four foam blocks
○ ○
3 and 5 to their original positions for the CWB8420DZ. For the CWB1760FD make sure
9.
that the foam blocks
10. 12. Replace the filter dryer with a new one.
11. 13. Solder all joints. Silver solder and proper flux should be used on copper to steel or steel
to steel joints. Excess flux should be wiped off all tubing.
(CWB8420DZ)
○
2 are reinstalled. This is very important.
(CWB1760FD)