EPA TYPE 2

Which of the following statements about recycling and recovery equipment used for stationary refrigeration is FALSE?

What should be done after reaching the required recovery vacuum on an appliance?

What area of a refrigeration system does oil foaming usually occur?

When is it against EPA regulations to use system-dependant recovery equipment?

What is the best use for testing with soap bubbles?

You are changing out the compressor of a system containing 40 pounds of R-404A. In addition to isolating the compressor, which of the following procedures should you follow?

How long must an HVAC service company keep records for each disposed appliance with a charge between 5 and 50 pounds?

When recovery is first started, at what phase is the refrigerant removed to save recovery time?

When an appliance containing 50 pounds or more of a regulated refrigerant leaks refrigerant at an annual rate of 125% or more, what must be included on the leak inspection records submitted to the EPA?

What must an owner of a commercial refrigeration appliance with a charge of 2000 pounds of R-22 do once a leak rate threshold been exceeded?

When can appliances containing refrigerants be recovered to atmospheric pressure?

Why could a recycling or recovery machine that uses a hermetic compressor overheat when drawing deep vacuums?

Starting in 2019, what leak rate triggers the EPA requirement that commercial refrigeration systems containing 50 pounds or more of R-22 be repaired?

For what refrigerant is an equipment room refrigerant detector NOT required under ASHRAE Standard 15 provided the mechanical ventilation system in the machinery room is run continuously?

Industrial process refrigeration units with a 50 pound charge or more with an annualized leak rate ___of or more must have leaks repaired.

Unless plans are made to replace a system exceeding the maximum leak, repairs must be made in;

Refrigerants CFC R-12, HCFC R-22, and HFC 134a are all classified as;

All Refrigeration & HVAC systems are protected by a;

A refrigerant sensor which will sound an alarm and automatically start a ventilation system in occupied equipment rooms fall under;

Non-condensables will cause;

A crankcase heater is often used to prevent refrigerant from migrating to the oil during periods of:

EPA regulations state that maintenance, service or repair involving the removal of the following component is a "major repair"

Which of the following refrigerants is an HFO?

What can be done with the refrigerant trace gas and nitrogen after the leak is found?

When dehydrating a system it should be evacuated to a level of;

Refrigerant should be removed from the condenser outlet if the condenser is;

What happens to a refrigerant that is above the saturation temperature?

Which of the following is an indicator of a leak in a high pressure system with a capillary tube?

What is the first thing to do when a new system has been assembled (built up), and is ready for testing?

Which leak repair category does the EPA define as air-conditioning appliances used to provide cooling in order to control heat and/or humidity in occupied facilities including, but not limited to, residential, office, and commercial buildings?

Which of the following additions of refrigerant, when added to an appliance that contains 50 or more pounds of an ozone depleting refrigerant, triggers the requirement to calculate a leak rate?

Which of the following is NOT required to mothball an appliance (thereby extending the leak repair deadline)?

Why could a recycling or recovery machine that uses a hermetic compressor overheat when drawing deep vacuums?

Your recovery/recycling machine has R-22 in it. You now have to recover refrigerant from an R410A unit. What must be done before recovery?

Recovered refrigerant may contain which of the following impurities/

What is the primary water source for a water cooled recovery unit's condensing coil?

Why do gauge set hoses used for field service work have self sealing connectors or hand valves?

Refrigerant has been recovered from an air-conditioning system and held in a refillable cylinder, in order to replace the condenser coil. The refrigerant;

What should be done before transferring refrigerant to an empty cylinder.

Which of the following statements about recovering and recycling equipment is false?

You are changing out a compressor of a system containing 40 pounds of R404A. In addition to isolating the compressor, which of the following procedures should you follow?

What should be done after reaching the required recovery vacuum on an appliance?

Before making a major repair, technicians must evacuate and appliance or component containing more then 200 pounds of R410A to which of the following levels?

When can appliances containing refrigerants be recovered to atmospheric pressure?

Which of the following repairs would always be considered "major" under EPA's regulations?

When is against EPA regulations to use system dependant recovery equipment?

To avoid freezing the water contained in a water-cooled heat exchanger of an R-134a refrigeration system during charging, the system should be initially charged with R-134a vapor to a pressure of approximately;

What will non-condensables in a refrigeration system result in?

During evacuation with large amounts of moisture, it may be necessary to increase pressure to counteract freeing with gas such as;

For what refrigerant is an equipment room refrigerant detector NOT required under ASHRAE Standard 15 provided the mechanical ventilation system in the machinery is running continuously?

Pressure relief valves can only be installed3;

When could a reciprocating compressor be damaged if energized?

Which part of a belt-driven non-hermetic compressor is most likely to leak if the compressor has not been used for several months?

After installation of a field piped split system, the unit should first be pressurized with;

Which leak repair category does the EPA define as the refrigeration appliances used in the retail food and cold storage warehouse sectors?

A company uses a chiller that diverts 55% of its cooling capacity to one of its manufacturing lines and 45% of its cooling capacity to air condition the office spaces. Which leak rate category would this chiller be in?

What action must an owner/operator take if a supermarket system containing 50 or more pounds of R-22 leaks more than 125% of its full charge in a calendar year?

When recovery is first started, at what phase is the refrigerant removed to save recovery time?

Recovering refrigerant from a system in the vapor phase will minimize the loss of which of the following?

How can you speed up the removal of the refrigerant charge from a system?

Your recovery/recycling machine has R-22 refrigerant in it. You now have to recover refrigerant from an R-410A unit. What must be done before recovery?

What is the primary water source for a water cooled recovery unit's condensing coil?

Refrigerant has been recovered from an air-conditioning system and held in a refillable cylinder, in order to replace the condenser coil, the refrigerant;

What steps should be taken before using a recovery unit to remove a charge?

Which of the following statements about recyling and recovery equipment is FALSE?

You are changing out the compressor of a system containing 40 pounds of R-404A. In addtion to isolating the compressor, which of the following procedures should you follow?

What should be done after reaching the required recovery vacuum on an appliance?

Before making a major repair, technicians must evacuate an appliance or component containing more than 200 pounds of R-410A to which of the following levels?

When can appliances containing refrigerants be recovered to atmosperic pressure?

Which of the following repairs would always be considered "major" under EPA's regulations?

When is it against EPA regulations to use system-dependant recovery equipment?

What is a moisture indicating sight glass useful for?

Refrigerant cannot be recovered without isolating a parallel compressor system because of:

Which of the following refrigerants would be used in a low-pressure appliance?

It is best practice to use dry nitrogen to break the vacuum when dehydrating by the triple evacuation method. However, it;

Every refrigerating system must be protected by which of the following?

Pressure relief valves can only be installed:

EPA regulations require that leaking industrial process refrigeration be repaired(or retrofitted or retired) when the leak rate exceeds;

Where is the rupture disk located on a centrifugal chiller?

A chiller containing 150 pounds of HCFC refrigerant is leaking above the leak rate threshold. Unless granted additional time, what must be completed in 30 days?

Leak testing a low-pressure refrigeration system with nitrogen in excess of 10 psig could cause which of the following to fail?

Which of the following statements is true of recycling and recovery equipment?

After system servicing and recharging, why is refrigerant vapor re-introduced to the chiller before refrigerant liquid?

How long must a technician evacuating refrigerant from appliances with a full charge of more than 5 pounds and less than 50 pounds that are being disposed of keep records of the event?

What should be done to reduce refrigerant loss from a purge unit on a R-123 chiller?

Which of the following methods can be used to pressurize an R-1233ZD system for the purpose of opening the system for non-major repairs?

Where does refrigerant go to after it leaves the purge unit of a low-pressure centrifugal system?

ASRAE Standard 15-2013 requires that the use of room sensors and alarms to detect:

When leak testing a low-pressure chiller, the maximum pressure to use is;

What type of equipment can be worked on with Type III certification?

The most efficient method of leak checking a charged low-pressure refrigeration unit is to

EPA required evacuation levels for recovery or recycling equipment manufactured or imported on or after Nov. 15, 1993 is

What can be used to pressurize a chiller system before opening the system for a non-major repair?

Refrigerant recovery from a system using R-11 or R-123 starts with

If a strong odor is detected during the recovery process,

When installing more than one pressure relief valves must be installed;

After all the liquid has been removed from an average 350 ton approximately how much vapor refrigerant remains in the system

Where is the purge unit located in a low-pressure system?

In a chiller air and other noncondensables collect;

A rupture disk for low pressure chiller will rupture at;

Who establishes the refrigerant safety group standard

A low pressure chiller used for comfort cooling must be repaired if it has an annual leak rate of___ of the total charge.

When first inspecting a hermetic system known to be leaking, you should look for;

Which part of a belt-driven non-hermetic compressor is most likely to leak if the compressor has not been used for several months?

Starting in 2019, what leak rate triggers the EPA requirement that commercial refrigeration systems containing 50 pounds or more of R-22 be repaired?

After a leak repair of a supermarket rack using 3000 lbs. of R-22 and a successful initial verification test, when must a follow-up leak verification test be conducted?

An initial leak verification test failed after repairing a leak in a rack refrigeration system for a supermarket using an HCFC refrigerant. What would be the next step(s)?

When recovery is first started, at what phase is the refrigerant removed to save recovery time?

Where must you connect a hose in order to recover liquid refrigerant?

Recovering refrigerant from a system in the vapor phase will minimize the loss of which of the following?

After refrigerant liquid has been recovered from the appliance, any remaining vapor is;

How can you speed up the removal of the refrigerant charge from a system?

Why could a recycling or recovery machine that uses a hermetic compressor overheat when drawing deep vacuums?

Your recovery/recycling machine has R-22 refrigerant in it. You now have to recover refrigerant from an R-410A unit. What must be done before recovery?

Which of the following statements about recycling and recovery equipment is FALSE?

You are changing out the compressor of a system containing 40 pounds of R-404A. In addition to isolating the compressor, which of the following procedures should you follow?

What should be done after reaching the required recovery vacuum on an appliance?

Before making a major repair, technicians must evacuate an appliance or component containing more than 200 pounds of R-410A to which of the following levels?

When can appliances containing refrigerants be recovered to atmospheric pressure?

Which of the following repairs would always be considered "major" under EPA's regulations?

When is it against EPA regulations to use system-dependent recovery equipment.

What is the state of the refrigerant leaving the receiver in a refrigeration system?

Identify the best method to charge a system that has both an air-cooled condenser and evaporator with a nameplate charge of 80 pounds.

How would you remove moisture from refrigerant in a system?

For what refrigerant is an equipment room refrigerant detector not required under ASHRAE Standard 15 provided the mechanical ventilation system in the machinery is run continuously?

When could a reciprocating compressor be damaged if energized?

It is best practice to use dry nitrogen to break the vacuum when dehydrating by the triple evacuation method. However, it;

When first inspecting a hermetic system known to be leaking, you should look for;

When a trace gas becomes absolutely necessary, which of the available gasses should be used to help locate a leak?

A chiller for comfort cooling that contains 50 pounds or more of R-123 is leaking. Starting in 2019, at what leak rate does the EPA require that the equipment be repaired?

A comfort-cooling appliance containing 50 pounds or more of R-22 is found to be leaking beyond the applicable leak rate threshold. Unless granted additional time, how many days do you have to repair the leak and conduct the initial leak verification?

How long must owners and operators of regulated appliances normally containing 50 or more pounds of HCFC refrigerant keep records of leak inspections, initial leak verification and follow-up verification tests?

After refrigerant liquid has been recovered from the appliance, any remaining vapor is;

Why could a recycling or recovery machine that uses a hermetic compressor overheat when drawing deep vacuums?

What should be done before transferring refrigerant to an empty cylinder?

What steps should be taken before using a recovery unit to remove a charge?

When should refrigerant be removed from the condenser unit?

An operating unit that has a receiver/storage tank requires refrigerant system service. When servicing the unit;

How long must an HVAC service company keep records for each disposed appliance with a charge between 5 and 50 pounds?

Which of the following statements about recycling and recovery equipment is FALSE?

You are changing out the compressor of a system containing 40 pounds of R-404A. In addition to isolating the compressor, which of the following procedures should you follow?

What should be done after reaching the required recovery vacuum on an appliance?

Before making a major repair, technicians must evacuate an appliance or component containing more than 200 pounds of R-410A to which of the following levels?

When can appliances containing refrigerants be recovered to atmospheric pressure?

Which of the following repairs would always be considered "major" under EPA regulations?

When is it against EPA regulations to use system-dependent recovery equipment?

What is the evaporation temperature of R-134a at 0 psig?

Which of the following is a reason to take an oil sample?

What are refrigeration and air-conditioning compressor heaters used for?

It is best practice to use dry nitrogen to break the vacuum when dehydrating by the triple evacuation method. However, it;

Every refrigerating system must be protected by which of the following?

Pressure relief valves can only be installed;