What is
Hermetically sealed, manufactured, 5lbs or less of refrigerant
100
Refrigerants are heavier than air and can displace air in the room leading to __________________
What is Asphyxia/ asphyxiation
100
During the dehydration process, a refrigeration system can be _______________ to decrease dehydration time
What is heated
100
Self contained recovering devices can capture
What is liquid or vapor by itself
100
When does your certification expire?
What is never
200
As of this date, technicians servicing small appliances must be EPA certified.
What is November 14, 1994
200
Small amounts of refrigerant have no order, when a pungent odor is detected, this has likely occurred
What is compressor burn out
200
When serving an small appliance with a small leak, when are repairs mandated
What is they are not mandated but do so when possible
200
This, is the drop in replacement for R-12
What is there is no drop in replacement for R-12
200
After I wax on, I should
What is wax off (smile)
300
After this date, manufactured small appliances must be equipped with a process stub
What is November 15, 1993
300
Always use _________________ on the nitrogen cylinder
What is a pressure regulator
300
What must be done prior to disposing any appliance containing refrigerant?
What is recover the refrigerant
300
Who is responsible for the disposal of refrigerant
What is the last person in the chain
300
If the appliance has a defrost heater, operating the heater will
What is speed the recovery.
400
After this date must be capable of recovering 80%
of the refrigerant without the compressor operating or achieve a 4 inch vacuum under conditions
of ARI 740;
What is November 15, 1993
400
When filling a charging cylinder, the refrigerant that is vented off must be ______________
What is recovered
400
When should ammonia, hydrogen, and water be recovered with current recovery devices.
What is no
400
When can you over evacuated a system?
What is over evacuation of a system does not occur
400
What materials are piercing valves
What is copper and aluminum
500
What standard must recovery equipment manufactured after November 15, 1993 must
meet with no compressor?
What is 80% recovery
500
System dependent recovery equipment cannot be used when the appliance contains over ____________lbs of refrigerant
What is 15lbs.
500
When is a standard vacuum pump used as a recovery device?
What is in combination with a non pressurized container.
500
At high temptures, open flames and glowing metal surfaces, R-12 and R-22 will form into a
What is phosgene gas (hydrochloric, or hydrofluoric acids)
500
These are the three things need to calculate leak rates