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EPA 608 Free Practice Test 4: Type 3 exam
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Question 1 of 5
1. Question
1 pointsASHRAE guidelines 3-1990 states that if a 1 mm Hg vacuum level rises to ______ during an evacuation, the system should be leak tested:
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Question 2 of 5
2. Question
1 pointsAfter a chiller system has had a deep system evacuation, pressurizing the system with vapor up to the ________ saturation temperature is commonly done to decrease the possibility of system freeze up prior to a liquid change:
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Question 3 of 5
3. Question
1 pointsR-123 is considered a group B-1 refrigerant
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Question 4 of 5
4. Question
1 points350 ton R-11 chiller consists of approximately ______ of vapor:
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Question 5 of 5
5. Question
1 pointsA high pressure cut out is set to ______ on a recovery unit that is used on low pressure systems:
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