SkillCat EPA 608 Latest Update -

SkillCat EPA 608 Latest Update - Exam from Credible Sources with 400 Questions and Verified Correct Answers Golden Ticket to Guaranteed A+ Verified by Professor

A "major repair" under EPA's regulations would be - CORRECT ANSWER: Replacing Condenser /compressor/ auxiliary heat exchanger/ evaporator

A crankcase heater is often used to prevent refrigerant from mixing with compressor oil during periods of: - CORRECT ANSWER: Low ambient temperature

A customer has an industrial process refrigeration system that has 1000lbs of R-22 that has exceeded the applicable leak rate threshold. How often is the customer required to

perform a leak inspection? - CORRECT ANSWER: Every 3 months

A hermetic recovery machine when drawing deep vacuums will - CORRECT ANSWER:

Over heat due to reduced flow of refrigerant through the compressor

A hydrostatic tube test kit will - CORRECT ANSWER: determine if a tube leaks

A major repair under EPAs regulations would be - CORRECT ANSWER: Replacing a

condenser coil

A recovery machine is required for appliances with _ lbs or more of refrigerant -

CORRECT ANSWER: 15 lbs

A strong odor is around during the recovery process. Which of the following could be the

culprit - CORRECT ANSWER: Compressor burnout

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A technician has to make a major repair in an appliance having 1000 pounds of r407c he must evacuate the system to which of the following levels - CORRECT ANSWER: 10 inches of hg vacuum

A technique to speed up the recovery process is - CORRECT ANSWER: Cool the

recovery cylinder

A zeotropic blend will contain - CORRECT ANSWER: Two saturation valves that are far apart

Access fittings - CORRECT ANSWER: Are used to gain access to type 1 appliances

According to ASHRAE Guideline 3 the system should be checked for leaks if during a standard vacuum test the pressure in a system rises from 1 mm hg to a level above -

CORRECT ANSWER: 2.5 hg

After being phased out, where can technicians obtain refrigerant to service equipment

that contains that refrigerant? - CORRECT ANSWER: From recovered or reclaimed

refrigerant

After refrigerant is phased out can equipment still contain refrigerant - CORRECT

ANSWER: Yes

After refrigerant is phased out can technicians service equipment containing that

refrigerant - CORRECT ANSWER: Yes

After refrigerant liquid has been recovered from a appliance any remaining vapor is -

CORRECT ANSWER: removed by the recovery system

After the evaporator which component does the refrigerant go to next - CORRECT

ANSWER: Compressor

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After the refrigerant leaves the purge unit where does it go - CORRECT ANSWER:

Evaporator

Air will cause _____ discharge pressures in a refrigeration system. - CORRECT

ANSWER: higher

Alkylbenzene (AB) oil is used for systems with which of the following refrigerants -

CORRECT ANSWER: HCFC, HCFC blends

All hvac systems must be protected by a - CORRECT ANSWER: Pressure relief valve

An equipment has an appliance that uses r717 under ashrae standard 15 which piece of

equipment is not compulsory in the room - CORRECT ANSWER: Refrigerant detector

As technicians we must stay up to date on - CORRECT ANSWER: Federal state and

local law

As the temperature of a liquid increases what phase does it turn into - CORRECT

ANSWER: Vapor

ASHRAE standard 15 - 2013 requires the use of room sensors and alarms to detect

refrigerant leaks of - CORRECT ANSWER: All safety groups

ASHRAE Standard 15-2013 requires which equipment to detect refrigerant leaks? -

CORRECT ANSWER: Room sensors

At high temperatures what do CFCs and HCFCs decompose to - CORRECT ANSWER:

Hydrochloric and hydrofluoric acids

Can chlorine from the environment come from natural resources such as volcanoes -

CORRECT ANSWER: Yes but they are not the primary source

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Can refrigerant be resold - CORRECT ANSWER: Yes, but only if it has been reclaimed to AHRI Standard 700 specifications

Charging liquid R-245fa into a low-pressure refrigeration system under a vacuum

greater than 18 inches Hg vacuum can cause the; - CORRECT ANSWER: system water

to freeze

Common leak locations are - CORRECT ANSWER: Coils, valve connections, pipe

connections

Contaminated refrigerants can cause the appliance to - CORRECT ANSWER: Cool less efficient

Continuous excessive moisture collection in which component of a low pressure

refrigerant system could indicate a leak - CORRECT ANSWER: Purge unit

Defrost heaters - CORRECT ANSWER: Can be used to increase recovery speed and

temperature

Does the refrigerant change state in the compressor - CORRECT ANSWER: No

During refrigerant recovery local municipal water supply is used to cool the - CORRECT

ANSWER: Water cooled recovery unit

Equipment has to be certified to epa standards in order to recover which refrigerants -

CORRECT ANSWER: Cfc hcfc hfc

Example of refrigerant excluded from section 608 refrigerant management requirements

- CORRECT ANSWER: Water, nitrogen, carbon dioxide

Example of refrigerant that you don't need section 608 to purchase - CORRECT

ANSWER: Nitrogen

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