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Exam (elaborations)

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...

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  • September 15, 2024
  • 16
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • EPA 608
  • EPA 608
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EPA 608 Type 3 Study Guide with
Complete Solutions


On low pressure chillers, moisture typically enters the refrigerant system through -

Answer✔️✔️-air leaks from areas with gaskets or fittings


The maximum test pressure for leak testing a low pressure centrifugal is: - Answer✔️✔️-

10 psig

Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11

chiller - Answer✔️✔️-...

A hydrostatic tube test kit is used to: - Answer✔️✔️-determine if a tube leaks

Commercial and industrial process refrigeration systems must be repaired when the

leak rate exceeds ____ of the charge per year. - Answer✔️✔️-35%

Refrigerant recovery typically start with liquid recovery it is faster. - Answer✔️✔️-...

A rupture disc on a recovery vessel for a low pressure refrigerants relieves at: -

Answer✔️✔️-15 psig

According to ASHRAE Guideline 3-1996, if the pressure in a system rises from 1 mm

Hg to a level above ____ during a standing vacuum test, the system should be checked

for leaks. - Answer✔️✔️-2.5 mm Hg

The primary water source for a recovery unit condensing coil is _____. - Answer✔️✔️-

local municipal water supply



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, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Monday, September 2, 2024 12:59 PM


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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