EPA Regulations and Refrigerant Handling

A crankcase heater is often used to prevent refrigerant from mixing with compressor oil during periods of:

• Low ambient temperature

• High ambient temperature

• Low humidity

• High humidity

Non-condensables will cause;

• Low superheat

• Low discharge pressure

• High superheat

• High discharge pressure

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

• 30 inches of Mercury

• 25,000 Microns

• 500 Microns

• EPA does not have a requirement

Refrigerants CFC-12, HCFC-22, and HFC-134a are all classified as Type _______ substances.

• B-1

• B-2

• A-1

• A-2

A comfort cooling system that contains 50 pounds or more of R-410A is leaking. What will be the new maximum allowable annual leak rate starting in 2019?

• 5%

• 10%

• 15%

• 20%

Tags

NGSS.HS-ETS1-3

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

• 15

• 34

• 44

• 60

Tags

NGSS.HS-ETS1-3

A new split system should be checked for leaks by;

• pressurizing the system with a few ounces of HCFC-22 and compressed air.

• pressurizing the system with a few ounces of CFC-12 and an inert gas.

• releasing the factory refrigerant charge in the condensing unit.

• pressurizing the system with a few ounces of system refrigerant and an inert gas.

When using a recovery unit on a system containing 100 lbs. of R-410A it must be evacuated to;

• 0 inches of Mercury

• 4 inches of Mercury

• 10 inches of Mercury

• 15 inches of Mercury

EPA regulations state that removal of which component constitutes a 'major repair'?

• Pressure switch

• Compressor

• Liquid line drier

• Evaporator fan motor

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 inspections records?

• Initial verification, verification tests and records of recovered refrigerant from equipment.

• Quantity of refrigerant sold, procedures performed, date of call, name, address and phone number of manufacturer.

• Quantity of refrigerant, address of service technician, number of years in HVAC.

• The amount of refrigerant and addresses only.