EPA CORE

What is temperature glide?

A refrigerant blend that has a range of boiling points or condensing points through the evaporator and condenser respectively

The molecule found in CFC's and HCFC's that depletes the Ozone is

Chlorine

The chlorine in CFC's will

Not dissolve in water

If moisture is allowed to remain in an operating refrigeration system, what might form?

Acids Note: hydrochloric and hydrofluoric acids

HFC's, HFO's, HCFC's or CFC's have the highest Ozone Depletion Potential (ODP)

CFC's

How will long hoses effect the recovery process?

Cause excessive pressure drop, increased recovery time and potential for increased emissions. Note: the lower the ambient temperature, the slower the recovery rate

Because of the Montreal Protocol, when were CFC's phased out?

December 31, 1995

Crop loss, increase in eye disease and skin cancer have all been attributed to

Depletion of Stratospheric Ozone

What type of cylinders can only be used with virgin refrigerant?

Disposable cylinders

What are the two types of leak detectors used?

Electronic and ultrasonic

HCFC's contain what elements?

Hydrogen, Chlorine, Fluorine and Carbon

It has been a violation to vent CFC's or HCFC's since what date?

July 1, 1992

Which international agreement (Treaty) regulated the production and use of CFC's HCFC's, halons, methyl chloroform and carbon tetrachloride?

Montreal Protocol

Technicians have been required to be certified to service, maintain or dispose of appliances containing regulated refrigerants since what date?

November 14, 1994

It has been a violation to vent HFC's since what date?

November 15, 1995

The layer of Stratosphere that protects us from excessive Ultra Violet radiation is comprised of

Ozone

When pressurizing with nitrogen, you should always charge through a ____ ___ and insert a ___ ____

Pressure regulator Relief valve

To process refrigerant to a level equal to new (virgin) product specifications as determined by chemical analysis is what process?

Reclaim Note: Reclaimed refrigerant must meet the standard set forth in ARI 700 before it can be resold

To remove refrigerant in any condition from a system and store it in an external container is what process?

Recover

Once a leak is detected, _____ _____ will pinpoint the leak

Soap bubbles

If nitrogen is used to flush debris out of a system, is it legally able to be vented?

Yes

To clean refrigerant for reuse by separating the oil from the refrigerant and removing moisture from the refrigerant by passing it through one or more filter driers is what process?

Recycle

How many chlorine atoms does it take to destroy 1,000,000 (one million) Ozone molecules?

10

Recover any remaining refrigerant and then render the cylinder useless, then recycle the metal is the proper disposal method for what type of cylinders?

Disposable cylinders

If you discover that two or more refrigerants have been mixed in a system, what do you do?

Recover the mixture in a separate tank Note: do NOT mix different refrigerants in the same recovery tank because the mixture may be impossible to reclaim.

What are the two basic types of recovery devices?

System dependent and self contained Note: System dependent captures refrigerants with assistance of components in the appliance from which refrigerant is being recovered. Self contained has its own means to draw the refrigerant out of the appliance

If recovery cylinders show signs of rust or appear to not be secure, what should happen?

They should be reduces to 0 psig and discarded