#3 EPA 608 Type I

Before beginning a refrigerant recovery procedure, it is ALWAYS necessary to;

• allow the appliance to stabilize at room temperature.

• know the type of refrigerant that is in the system.

• remove the appliance to an outdoor location.

• disconnect the appliance from its power source.

A system-dependent (passive) recovery process for small appliances;

• still uses a pump to recover refrigerant.

• must use a pressure relief device when recovering refrigerant.

• captures refrigerant in a non-pressurized container.

• can only be performed on a system with an operating compressor.

What is the maximum normal charge of HCFC or HFC refrigerant in an appliance that is allowed to use system dependent recovery equipment?

• 5 pounds

• 10 pounds

• 15 pounds

• 50 pounds

The sale of CFC, HCFC, HFC, and HFO refrigerants to service or install refrigeration and air-conditioning equipment is;

• banned from use unless you have a recovery machine.

• limited by law to HVAC contractors and/or mechanical engineers.

• allowed only if there is proof of need.

• restricted to technicians who are EPA certified in refrigerant recovery.

When servicing a small appliance found to be leaking, it is;

• mandatory to repair the leak within 30 days.

• mandatory to repair the leak only when the annualized leak rate exceeds 15% of the total charge.

• not mandatory to repair the leak but it is recommended to do so whenever possible.

• mandatory to recover all remaining refrigerant and dispose of the appliance.

Which of the following best describes low loss fittings on refrigerant recovery devices used to recover CFCs, HCFCs, and HFCs?

• They can be either manually closed or automatically closed when disconnected to prevent loss of refrigerant from hoses.

• They are used to connect the recovery device to an appliance and leak only small amounts of refrigerant during use.

• They are used to connect the recovery device to an appliance and must be discarded after each use.

• They eliminate oil loss during recovery.

When checking for non-condensables inside a recovery cylinder, why should the technician allow the temperature of the cylinder to stabilize to room temperature before taking a pressure reading?

• To prevent safety valves from purging refrigerant.

• It is a quick method of determining the refrigerant level inside the tank.

• Comparisons to a pressure-temperature chart are only valid if both the pressure and temperature of the refrigerant are stable and known.

• A temperature reading alone is enough to determine refrigerant quality.

Which of the following refrigerants is very high pressure and generally does NOT need to be recovered?

• R-22

• R-134a

• R-404a

• R-744

When installing any type of access fitting onto a sealed system;

• The fitting should be leak tested before proceeding with recovery.

• It is not necessary to leak test an access fitting.

• The fitting need not be leak tested until the total repair is completed.

• The system must be pressurized with dry nitrogen before leak testing can be attempted.

After installing and opening a piercing access valve, the recovery procedure cannot begin if the system is at what pressure?

• 75 psig

• 50 psig

• 30 psig

• 0 psig