608 Study Guide

January 28, 2024 Post a Comment

608 study guide

Question #1: What steps should be taken before using a recovery unit to remove a charge?

<ol class="X5LH0c"><li class="TrT0Xe">Acid testing the refrigerant.</li><li class="TrT0Xe">Purging the recovery unit with nitrogen.</li><li class="TrT0Xe">Changing the oil in the recovery unit.</li><li class="TrT0Xe">Checking the service valve positions and recovery oil level, when applicable.</li></ol>

What step should you take for low pressure systems that will be sitting idle and why?

What step should you take for low pressure systems that will be sitting idle and why? Pressure of system should be increased slightly above atmospheric pressure in order to prevent air accumulation in the system.

Why should care be used to prevent overfilling refrigerant storage cylinders?

Why should care be used not to overfill refrigerant storage cylinders? The cylinders may be too heavy to lift. The internal pressure of the cylinders may rise in heated areas and cause an explosion.

What are the 3 refrigerant recovery methods?

The three different recovery methods are: vapor recovery; the push-pull method; and the liquid recovery method. In the vapor recovery method, the refrigerant is removed from the HVAC system in a vapor state. The vapor is then condensed into a liquid by the recovery unit and transferred to the recovery cyclinder.

What removes moisture from a refrigerant?

Detailed Solution. Drier is used to remove the moisture from the refrigerant. Sometimes it is also referred as dehydrator or dryer. It is necessary to remove moisture from the system otherwise it may freeze inside the tube causing the flow of refrigerant to be restricted.

How many questions can you miss on EPA test?

The exam consists of a total of 50 multiple choice questions. To pass the exam, you must get at least 21 correct on each section of the Core and Type I exams.

Does sitting with feet up raise blood pressure?

Talking while having your blood pressure taken can elevate your reading by as much as 10 points, according to the American Heart Association. Dangling your feet from an exam table or kitchen stool can also throw off the reading.

How can I pass the EPA test?

5 Tips for Studying for Your EPA Certification Test

Use a Study Manual.
Talk With an HVAC Professional. ...
Make a Study Guide. ...
Take a Practice Test. ...
Watch Instructive Videos Online. ...
Get Your Certification through Mainstream Engineering.

What appliance is not covered by EPA 608?

Section 608 technician certification is required to dispose of appliances, except for small appliances (an appliance that is fully manufactured, charged, and hermetically sealed in a factory with five pounds or less of refrigerant), motor vehicle air conditioners (MVACs), or MVAC-like appliances.

What is the limit when filling refrigerant to cylinders?

NEVER Exceed Refrigerant Recovery Tank Limits By law, a tank can only be filled to 80% capacity and must be kept under 122°F. It is recommended to fill to 2 lbs less than the 80%. For example, a 30 lb cylinder can hold 22 lbs of refrigerant and a 50 lb cylinder can hold 38 lbs of refrigerant.

What is the fine for venting refrigerant per day?

EPA performs random inspections, responds to tips, and pursues potential cases against violators of the Section 608 regulations. EPA is authorized to assess fines of up to $37,500 per day for any violation of these regulations.

What are the 4 phases of refrigerant?

How Does Refrigerant Work?

Stage 1: Evaporator Coil. Your refrigerant's journey begins at your evaporator coil, which is located inside the indoor unit in your home.
Stage 2: Compressor. ...
Stage 3: Condenser Coil. ...
Stage 4: Expansion Chamber.

What are the four 4 types of refrigeration system?

Here are the different types of refrigeration systems:

Evaporative Cooling. Evaporative cooling units are also referred to as swamp coolers.
Mechanical-Compression Refrigeration Systems. Mechanical compression is used in commercial and industrial refrigeration, as well as air conditioning. ...
Absorption. ...
Thermoelectric.

What are the 2 methods of refrigerant leak detection?

Refrigerant leak detection methods include, but are not limited to: soap bubble method; fluorescent dye method; or. electronic leak detection method.

What is the most common source of refrigerant leaks?

Refrigerant leaks occur due to poor installation of some aspects of your HVAC unit. For instance, the most common cause of a leak is due to overtightening the flare connections. You should only allow a licensed professional to install your air conditioning system to avoid a freon leak.

What removes heat from refrigerant?

The condenser This component is supplied with high-temperature high-pressure, vaporized refrigerant coming off the compressor. The condenser removes heat from the hot refrigerant vapor gas vapor until it condenses into a saturated liquid state, a.k.a. condensation.

How do you stop refrigerant leaks?

Top 10 tips to prevent refrigerant leaks

Perform a leak check on every service call.
Periodically replace copper lines as well as insulation and mounting hardware.
Keep refrigeration racks and mechanical rooms as clean as possible in order to spot leaks more easily.

Is the EPA 608 exam open book?

It is an open-book exam, and you can use the free manual we provide as much as you would like during the exam. The test can be taken online, but you may not receive the help of any other persons while taking the exam.

What happens if you fail the EPA test?

If you pass all four tests you obtain a Universal Certification. If you fail any of the sections, you need only retake the test(s) that you failed. Currently, EPA 608 certification does not expire but who knows what the future holds. Advice is to get yours and have it in your resume/pocket.

How do I know if I passed my EPA 608 test?

In order to view your Certification History, please log in using the last name that is located on your refrigerant card plus either your Certification ID or your Social Security number.