HVAC EPA Type I

A recovery cylinder which is half full of recovered R-22 at normal room temperature (about 75F), in the absence of non-condensables, will be pressurized to:

130 psig.

System-dependent recovery methods may only be used on appliances containing;

15 pounds of refrigerant or less.

A recovery cylinder which is half full of recovered R-410A at 90 degrees F, in the absence of non-condensables, will be pressurized to:

300 psig.

What is the maximum allowable factory charge or refrigerant for Type I appliances?

5 pounds.

A recovery cylinder which is half full of recovered R-12 at normal room temperature (about 75F), in the absence of non-condensables, will be pressurized to:

75 psig.

With a non-operating system compressor, recovery equipment must be capable of recovering;

80 percent of the refrigerant or achieving 4 inches of vacuum.

Which of the following is true regarding refrigerant leaks on small appliances? A. EPA does not require repair, but leaks should be repaired whenever possible. B. All leaks on Type 1 equipment must be repaired. C. Only very large leaks must be repaired. D. All systems with an annualized leak rate of 15 percent or greater must be repaired.

A. EPA does not require repair, but leaks should be repaired whenever possible.

When checking for the existence of noncondensable gases inside a recovery cylinder, why is it proper procedure to allow the temperature of the decliner to stabilize at room temperature before taking a pressure reading?

Because any comparisons to a pressure-temperature chart is only valid if both the pressure and temperature of the refrigerant are stable.

When pressurizing a system with nitrogen you should; A. Never exceed 3.5 times the high side pressure rating. B. Charge through a pressure regulator. C. Install a relief valve in the line downstream from the pressure regulator.

Both B and C. B. Charge through a pressure regulator. C. Install a relief valve in the line downstream from the pressure regulator.

System-dependent or passive recovery equipment;

Captures refrigerant into a non-pressurized container.

Recovery equipment must be;

Certified by an EPA-approved testing laboratory.

Portable refillable tanks or containers used to ship recovered refrigerants must meet what standard(s)?

Department of Transportation

When recovering refrigerant into a non-pressurized container from a refrigerator with an improper compressor:

It is necessary to heat and strike the compressor with a rubber mallet.

When a system is in deep vacuum;

Never energize the compressor.

Recovery equipment used for the service or repair of small appliances must be certified by an EPA-approved laboratory if the recovery equipment was manufactured after:

November 15, 1993.

On a small appliance with an operating compressor that has a completely plugged capillary tube, what is the minimum number of access valves that are needed to evacuate the refrigerant?

Only one access valve, on the high of the system.

Which of the following refrigerants must be recovered with equipment currently regulated by the equipment certification requirements of the EPA under Section 608?

R-12

Which of the following refrigerants is most commonly used as a replacement for R-12 in new household refrigerators?

R-134a

If after installing a fitting for the purpose of recovering the appliances refrigerant, you find that the system pressure is 0 psig;

Refrigerant recovery is not required.

When using a system-dependent recovery system on an appliance that has a operating compressor, the technician should;

Run the compressor and recover from the high side of the system only.

The EPA Section 608 certification must be renewed every:

The EPA certification has no expiration date.

Why is it important to obtain an accurate pressure reading of refrigerant inside a recovery cylinder?

The pressure reading along with a temperature reading can indicate if there is excessive air or other non-condensables in the cylinder.

When filling a charging cylinder with a regulated refrigerant;

The refrigerant vapor that is vented off the top of the cylinder must be recovered.

If regulations change after the technician becomes certified;

The technician is responsible for complying with any changes to the regulations.

Anyone who recovers refrigeration during maintenance, service or repair of small appliances must be certified as either a Universal Tech or a:

Type I Technician.

If a large leak of refrigerant occurs in an enclosed area and no self-contained breathing apparatus is available, then the technician should:

Vacate and ventilate the spill area.

The EPA requires that all appliances must be equipped with a service aperture or other device that is used when adding or removing refrigerant from the appliance. For small appliances, this service port typically is:

a straight piece of tubing, called a Process Tube, that is entered using a piercing access valve.

A standard vacuum pump designed specifically for evacuation and dehydration can:

be only used as a recovery device in combination with a non-pressurized container.

Which of the following are part of the EPA's recommended safe work practices? a. wear safety glasses or goggles when working with any compressed gases b. wear a respirator when working with any refrigerant c. wear butyl-lined gloves when connecting/disconnecting hoses

both "a" and "c" a. wear safety glasses or goggles when working with any compressed gases c. wear butyl-lined gloves when connecting/disconnecting hoses

According to the EPA which recovery equipment maintenance practice(s) should be preformed on a regular basis?

check recovery device for refrigerant leaks.

Refrigerant recovery devices must be equipped with low loss fittings. Low loss fittings are used to:

connect the recovery device to an appliance and which are manually closed (or which close automatically) when they are disconnected, to prevent loss of refrigerant from hoses.

Before beginning a refrigerant recovery procedure it is ALWAYS necessary to:

determine the type of refrigerant in the system.

To avoid accidental removal of liquid refrigerant when recovering vapor from a system, using a self- contained (active) recovery device that cannot handle liquid refrigerant, you should draw vapor from the:

high side.

If R-12 or R-22 are exposed to high temperatures, (from open flames or glowing hot metal surfaces for example), these refrigerants can decompose to form:

hydrochloric and hydrofluoric acids.

When servicing a small appliance with a leak:

it is not mandatory to repair the leak but do so whenever

If the EPA regulations should change after a technician becomes certified:

it is the technician's responsibility to comply with any future changes in the law.

When using a graduated charging cylinder, any refrigerant that is vented from the charging cylinder:

must be recovered.

A refrigerant that can be used as a direct service "drop-in" substitute for R-22 in a small appliance is: a. R-410A. b. R-134a. c. R-141b. d. none of the above

none of the above

When ever nitrogen is used to pressurize or blow debris out of a system:

only nitrogen vapor should be used.

Type I Certification is required for;

persons handling refrigerant during maintenance, service, or repair of small appliances.

It is an EPA regulation that any person who opens an appliance for maintenance, service or repair must have at least one self-contained recovery machine available at their place of business. The only exception to this rule are persons working on:

small appliances.

After installing and opening a piercing access valve, if the system pressure is _____ do not begin the recovery procedure.

0 psig

On a system with an operating compressor, recovery equipment must be capable of recovering;

90% refrigerant or achieving 4 inches of vacuum.

A recovery cylinder which is half full of recovered R-500 at normal room temperature (about 75F), in the absence of non-condensables, will be pressurized to:

95 psig.

Small amounts of refrigerant have no odor, therefore if a pungent odor is detected during a system recovery and/or repair:

A compressor burnout has likely occured.

If a strong odor is detected while performing a refrigerant recovery process,

A compressor burnout has likely occurred.

Which of the following is not a Type I appliance? A) an MVAC-like system that holds three pounds of R- 12 B) a water cooler that holds 13 ounces of R-12 C) a food freezer that holds 22 ounces of R-22 D) a dehumidifier with seven ounces of R-500

A) an MVAC-like system that holds three pounds of R- 12

A small appliance is defined by EPA as;

Appliances manufactured, charged, and hermetically sealed in a factory with 5 lbs or less of refrigerant.

Small appliances are equipped with a straight piece of tubing (process stub) that is used;

As the installation location for a piercing-type access valve.

Which of the following is an example of a non-condensable? A. Moisture B. Air C. R-12 D. R-134a

B. Air

In the event of a large release of R-12 or R-22 in a contained area, which of the following is true? A. Safety goggles and lined butyl gloves are all that is needed. B. Self-contained breathing apparatus (SCUBA) or leaving the area is required. C. Respiratory protection is not required, these gases are not toxic. D. Dust masks are sufficient protection against harmful vapors.

B. Self-contained breathing apparatus (SCUBA) or leaving the area is required.

After the refrigerant has been recovered, which of the following can be used to flush the system? A. R-22 B. Compressed air C. Nitrogen D. Water

C. Nitrogen.

Which HC refrigerant is allowed for use in NEW Domestic Small Appliances? A. R-404A B. R-410A C. R-600a D. R-717

C. R-600a

What can cause excessive pressure on the high side of an active self-contained recovery device? A. A closed recovery tank inlet valve. B. Excessive air or other non-condensables in the recovery tank. C. A closed recovery tank outlet valve.

Either choice "A" or "B" A. A closed recovery tank inlet valve. B. Excessive air or other non-condensables in the recovery tank.

Self-contained or active recovery equipment;

Has its own means to recover refrigerant.

When using a system-dependent recovery system on an appliance that has a non-operating compressor, the technician should;

Place access fitting on both the low and high side of the system.

Small appliances in recreational vehicles may use refrigerants such as Ammonia, Hydrogen, and water. These refrigerants;

Should not be recovered.

Technicians who perform sealed-system service on small appliances must have;

Type I or Universal Certification

When using a passive system-dependent recovery method on an appliance with an operating compressor, you should run the (appliance's) compressor:

and recover the refrigerant from the high side.

Piercing-type valves should only be used on which of the following tubing materials? a. copper b. aluminum c. steel d. both "a" and "b"

both "a" and "b" a. copper b. aluminum

When recovering refrigerant from a household refrigerator who's compressor does not run, it is recommended that a low and high side access valves be installed because ____________: a. it can enhance the speed of recovery b. it may be necessary to achieve required recovery efficiency. c. otherwise, the refrigerator's compressor may be damaged d. both "a" and "b"

both "a" and "b" a. it can enhance the speed of recovery b. it may be necessary to achieve required recovery efficiency.

If a reclamation processing plant is given a recovery tank containing a mixture of refrigerants, they can: a. refuse to process the refrigerant and return it. b. agree to destroy the refrigerant, but typically a substantial fee is charged for the destruction. c. resell the refrigerant for reuse in its current state. d. both "a" and "b"

both "a" and "b" a. refuse to process the refrigerant and return it. b. agree to destroy the refrigerant, but typically a substantial fee is charged for the destruction.

Recovery or recycling equipment which was manufactured after November 15, 1993 and is used to recover refrigerant from small appliances prior to the disposal of the small appliance must be used: a. recover 95% or the refrigerant from the appliance whether or not the compressor is functional. b. recover 80% of the refrigerant in an appliance if the appliance's compressor is inoperative. c. recover 90% of the refrigerant in an appliance if the appliance's compressor is operational. d. both "b" and "c"

both "b" and "c" b. recover 80% of the refrigerant in an appliance if the appliance's compressor is inoperative. c. recover 90% of the refrigerant in an appliance if the appliance's compressor is operational.

EPA regulations require the capture of at least 80% of the refrigerant from a small appliance with a non-operating compressor is the technician is using: a. a system-dependent (passive) recovery unit. b. a self-contained (active) recovery unit. c. either type of recovery unit. d. refrigerant recovery from inoperable systems is not required.

c. either type of recovery unit.

When ever nitrogen is used to pressurize or blow debris out of a system, the nitrogen:

can be vented.

Applying heat, with a heat gun, to the compressor;

can help vaporize any trapped liquid refrigerant during recovery.

A passive system-dependent recovery device for small appliances:

captures refrigerant in a non-pressurized container.

When R-500 is recovered from an appliance, it; a) Can be mixed with either R-22 or R-12 during the recovery process, since R-500 is actually a mixture of the two refrigerants b) Can be mixed with R-12 but not R-22 during the recovery process c) need not be recovered since R-500 is not one of the refrigerants covered by the Clean Air Act d) Must be recovered into its own recovery vessel that is clearly marked to ensure that mixing of refrigerants does not occur

d) Must be recovered into its own recovery vessel that is clearly marked to ensure that mixing of refrigerants does not occur

For which of the following refrigeration systems/appliances would it be permissible to use a passive recovery device for refrigerant recovery? a. a centrifugal air conditioner b. a reciprocating liquid chiller c. a single, compressor, large commercial walk-in freezer. d. a domestic refrigerator

d. a domestic refrigerator

A Very-High-Pressure appliance is one that uses a refrigerant with a liquid phases saturation pressure above 355 psia at 104F. This definition includes but is not limited to appliances using which of the refrigerants listed below: a. R-23 b. R-13 c. R-503 d. all of the above

d. all of the above

Prior to shipping any used refrigerant it is necessary to: a. properly label the refrigerant container. b. properly complete shipping paperwork. c. check that refrigerant container meets Department of Transportation standards. d. all of the above

d. all of the above

When using any equipment or servicing any system that has schraeder valves, it is "critical" to: a. inspect the schrader valve core for bends and breakage. b. replace any damaged scharder valve core to prevent leakage. c. cap the schraeder ports to prevent accidental depression of the valve core. d. all of the above.

d. all of the above.

The EPA definition of a small appliance includes which of the following? a. a device manufactured, charged and hermetically sealed in a factory b. a device with a charge of 5 pounds of less c. products with compressors under a quarter horsepower d. both "a" and "b"

d. both "a" and "b" a. a device manufactured, charged and hermetically sealed in a factory b. a device with a charge of 5 pounds of less

A refrigerant that can be used as a direct service "drop-in" substitute for R-12 in a small appliance is: a. R-410A b. R-134a c. R-141b d. none of the above

d. none of the above

Which of the refrigerants listed below should be recovered with current EPA-approved recovery devices? a. ammonia b. hydrogen c. water. d. none of the above

d. none of the above

A standard vacuum pump designed specifically for evacuation and dehydration can:

never be used as a recovery device in combination with a pressurized container.

When transporting refrigerants, DOT (Department of Transportation) Regulation number 49 CFR requires ___________ to be recorded on the shipping papers for hazard class 2.2, Non Flammable Compressed Gases?

number of cylinders of each gas.

Technicians with a Type I small appliance certification are certified to recover refrigerant during the maintenance, service or repair of:

packaged terminal air conditioners("PTACs") with 5 pounds or less of refrigerant.

When using ______, it is essential to take extra measures (such as heating/striking), to help release trapped refrigerant from the compressor oil.

passive system-dependent recovery devices on a small appliances with a non-operating compressor.

At high temperatures, (i.e. open flames, glowing metal surfaces, etc.) R-12 and R-22 can decompose to form:

phosgene gas

Recovery devices that were manufactured before November 15, 1993 and are used for recovery of refrigerant from small appliances must be capable of:

recovering 80% of the refrigerant whether or not the compressor is operating or achieving a 4 inch vacuum under conditions of ARI 740-1993

Recovery devices that were manufactured after November 15, 1993 and are used for recovery of refrigerant from small appliances must be capable of:

recovering 90% of the refrigerant when the compressor is operating or achieving a 4inch vacuum under the conditions of ARI 740-1993.

Which refrigerants can be mixed?

refrigerants can never be mixed

When using nitrogen, the nitrogen tank should always be equipped with a:

regulator.

The sale of CFC and HCFC refrigerants is:

restricted to technicians who are EPA certified in refrigerant recovery.

The sale of the refrigerant is:

restricted to technicians who are EPA certified in refrigerant recovery.

If you install an access fitting onto a sealed system:

the fitting should be leak tested before proceeding with recovery.

When using a passive system-dependent recovery process, you should access both the high and low side of the system for the refrigerant recovery if _____________ .

the system's compressor does not run

Large spills of refrigerants can cause suffocation because:

they are heavier than air and displace oxygen/

Solderless piercing valves should not remain installed on refrigeration systems after completion of repairs because:

they tend to leak over time.

If you are recovering refrigerant from a frost-free refrigerator, you should:

turn on the defrost heater to vaporize any trapped liquid.

When you connect your service manifold to check system pressures, it's always a good idea to:

use equipment such as hand valves or self-sealing hoses to minimize any release.

Recovering multiple types of refrigerants in the same cylinder;

will make the reclaimed refrigerants unreclaimable.