EPA 608 Type 1

The EPA requires the all comfort cooling systems with more than a 50 lbs. charge be repaired when the annual leak rate exceeds

• 15%

• 25%

• 35%

• 50%

Tags

NGSS.HS-ETS1-3

The EPA requires that all commercial and industrial process refrigeration equipment with more than a 50 lb. charge be repaired when the leak rate exceeds

• 15%

• 25%

• 35%

• 50%

Tags

NGSS.HS-ETS1-3

Why is it likely for recovery and recycling machines to overheat when drawing a deep vacuum?

• because a deep vacuum causes high head pressure

• because refrigerant is needed to cool the compressor

• because the refrigerant oil has evaporated

• a recovery and recycling machine would not overheat when drawing a deep vacuum

After removing refrigerant from a system, the refrigerant

• may be recycled and sold to another customer

• may be reused in the same system, or in another system owned by the same person

• may not be reused

• must be reclaimed

When using recovery and recycling equipment manufactured before November 15, 1993, technicians must evacuate an appliance containing less than 200 lb. of HCFC-22 to what level before making a major repair?

• 0 psig"

• 4" Hg

• 10" Hg

• 30" Hg

The sale of CFC and HCFC refrigerants has been restricted to certified technicians since

• November 15, 1993

• July 1, 1992

• December 31, 1995

• November 14, 1994

Tags

NGSS.HS-LS2-7

After installation of a refrigeration system, the technician should first

• evacuate the system

• pressure test the system using R-22

• pressure test the system using nitrogen

• charge the system using the correct refrigeration

The EPA requires that all commercial and industrial process refrigeration systems with more that 50 lb. of refrigerant be repaired when leak rates exceed

• 15%

• 25%

• 35%

• 50%

Tags

NGSS.HS-ETS1-3

When recovering R-11 or R-123 from a low pressure system, always recover

• liquid first

• vapor first

• vapor and liquid at the same time

• none of the above

To clean refrigerant by the use of filter dryers and then reuse it is called ____.

• recovery

• renew

• reclaim

• recycle