EPA 608 Type 3 Study Guide with Complete Solutions
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Course
EPA 608
Institution
EPA 608
EPA 608 Type 3 Study Guide with
Complete Solutions
On low pressure chillers, moisture typically enters the refrigerant system through -
Answer️️ -air leaks from areas with gaskets or fittings
The maximum test pressure for leak testing a low pressure centrifugal is: - Answer️️ -
10 psig...
When recharging a refrigeration system with R-11, what vaporpressure is necessary in
the shells before changing with liquid? - Answer✔️✔️-16.9" Hg vacuum
After recovering the liquid refrigerant you must: - Answer✔️✔️-recover the vapor
refrigerant
According to the EPA there is approximately _____ refrigerant vapor left in an average
350 ton R-11 chiller at 0 psig pressure once all the R-11 liquid has been removed. -
Answer✔️✔️-100 pounds
Charging refrigerant liquid into a refrigeration system when it is under a 29 inch Hg
vacuum can cause the: - Answer✔️✔️-system water to freeze
A system does not have to be evacuated all the way to the required level when: -
Answer✔️✔️-leaks in the appliance make evacuation to the prescribed level unattainable
Which of the foloowing repairs would ALWAYS be considered "major" under EPA's -
Answer✔️✔️-replacement of evaporator coil
Under EPA's regulation's _______ is used to pressurize a low pressure chiller for the
purpose of opening the system for a non major repair? - Answer✔️✔️-warming the
refrigerant
If you are using a recovery machine manufactored AFTER 11-15-93 you must evacuate
an low pressure appliance to _______ before making a major repair. - Answer✔️✔️-25
mm of Hg absolute
After reaching the required recovery vacuum on a chiller, you should - Answer✔️✔️-Wait
for at least a few minutes to see if the system pressure rises, indicating that there is till
refrigerant in a liquid form or in the oil
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