Type 1 Small Appliance– Practice Test 2

When using a passive system-dependent recovery method on an appliance with an operating compressor, you should run that appliances compressor

Deselect Answer

on 240 volts while recovering the refrigerant from the capillary tube.

and recover the refrigerant from the high side.

for several minutes, shutting it off, then recover the refrigerant from the high side.

for several minutes, shutting it off, then recover the refrigerant from the low side.

A passive system-dependent recovery device for small appliances

Deselect Answer

captures refrigerant in a non-pressurized container.

never needs the use of a pump, compressor, or heat to recover the refrigerant.

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

must use a pressure-relief device when recovering refrigerant.

The sale of CFC and HCFC refrigerants is

Deselect Answer

banned.

limited by law to equipment owners of commercial equipment.

allowed only if the quantity is less than pounds.

restricted to technicians who are EPA certified in refrigerant recovery.

Which of the refrigerants listed below should be recovered with current EPA-approved recovery devices?

Deselect Answer

Water

Ammonia

Hydrogen

None of the above

When servicing a small appliance with a leak

Deselect Answer

it is mandatory to repair the leak if more than 35 percent of the charge escapes within a 12-month period.

it is mandatory to repair the leak within 30 days.

it is not mandatory to repair the leak but doing so is most responsible.

Both A and B.

For which of the following refrigeration systems/appliances would it be permissible to use a passive recovery device for refrigerant recovery?

Deselect Answer

A large commercial walk-in freezer with a single compressor.

A centrifugal air conditioner.

A reciprocating liquid chiller.

A domestic refrigerator.

When using any equipment or servicing any system that has schrader valves, it is critical to

Deselect Answer

replace any damaged schrader valve core to prevent leakage.

inspect the schrader valve core for bends and breakage.

cap the schrader ports to prevent accidental depression of the valve core.

All of the above.

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

Deselect Answer

None of the above.

sulfuric and phosphoric acids.

hydrochloric and hydrofluoric acids.

boric and chromic acids.

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

Deselect Answer

must be recovered.

None of the above.

is considered a de minimis release.

does not need to be recovered.

A standard vacuum pump designed specifically for evacuation and dehydration can

Deselect Answer

be used alone as a system-dependent (passive) recovery device.

be used alone as a substitute for any recovery device.

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

be used alone as a self-contained (active) recovery device.

The EPA section 608 certification must be renewed every

Deselect Answer

2 years.

The EPA certification has no expiration date.

3 years.

10 years.

Prior to shipping any used refrigerant it is necessary to

Deselect Answer

All of the above.

check that the refrigerant container meets Department of Transportation standards.

properly label the refrigerant container.

properly complete shipping paperwork.

A refrigerant that can be used as a direct service “drop-in” substitute for R-12 in a small appliance is

Deselect Answer

R-141b

R-410a

None of the above

R-134a

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

Deselect Answer

0 psig

15 psig

40 psig

30 psig

The EPA definition of a small appliance includes which of the following?

Deselect Answer

Products with compressors under one quarter horsepower.

A device manufactured, charged, and hermetically sealed from the factory.

Both A and B.

A device with a charge of 5 pounds or less.

When using _________ , it is essential to take extra measures such as heating or striking the compressor, to help release trapped refrigerant from the compressor oil.

Deselect Answer

a passive system-dependent recovery device on a small appliance with a non-operating compressor

a passive system-dependent recovery devices on an operating system

a refrigerant system has a low side leak

an active self-contained recovery device

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

Deselect Answer

R-410a systems.

high -pressure appliances.

low-pressure appliances.

small appliances.

Which of the following are part of the EPA’s recommended safe work practices?

Deselect Answer

Wear safety glasses or goggles when working with any compressed gas.

Both A and C.

Wear a respirator when working with any refrigerant.

Wear butyl-lined gloves when connecting/disconnecting hoses.

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

Deselect Answer

recovering 70% of the refrigerant if the compressor is operating or achieving a 4-inch vacuum under conditions of ARI 740-1993.

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

recovering all of the refrigerant if they are still to be used.

achieving a 10-inch vacuum under conditions of ARI 740-1993.

Piercing-type valves should only be used on which of the following type tubing materials?

Deselect Answer

Copper

Both A and B

Aluminum

Steel

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

Deselect Answer

there is a leak in the system.

the systems compressor only operates at half speed.

the systems compressor operates normally.

the systems compressor does not run.

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?

Deselect Answer

Only one access valve on the low side of the system.

All of the above.

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

Two valves, one on the high and one on the low side of the system because the capillary tube is plugged.

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

Deselect Answer

low-pressure equipment.

small unitary air-conditioning systems with 7 pounds or less of refrigerant.

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

motor-vehicle air-conditioning equipment.

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

Deselect Answer

30 psig

120 psig

75 psig

95 psig

A refrigerant that can be used as a direct service “drop-in” substitue for R-22 in a small appliance is

Deselect Answer

R-141b

R-410a

R-134a

None of the above

TYPE 1

SMALL APPLIANCE

PRACTICE TEST 2

ARE YOU READY?

LET’S PRACTICE!