Refrigerator Troubleshooting Diagram

Refrigerator Check valve

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This is sometimes called a non-return valve. It is a simple device used to ensure that fluid or vapour can only travel in one direction and not back up to another part of the system pipework. Check valves have been mentioned in connection with oil separators (Figure 75), multiple evaporators (Figure 84) and hot gas defrosting (Figures 86a and 86b).

Figure 87 shows the construction of the valve, and the locations in a multiple evaporator system.

Check valve construction and location

Check valve construction and location

 

Written by sam

November 12th, 2009 at 10:45 am

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