EPA 608 Type II

Type II certification applies to-

• high and very high pressure refrigerants

• low pressure refrigerants

• appliances with charges less than 5 lbs.

• low pressure chillers

Recovery speed can be increased by

• placing the recovery vessel in hot water

• placing the recovery vessel in ice water

• using an oversized recovery cylinder

• using longer hoses leading to the recovery tank

Tags

NGSS.HS-PS1-5

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

What maintenance task must always be done to recovery/recycle equipment?

• Change the system's oil and filters

• vacuum test the equipment after every system recovery/

• pressure test the equipment after every recovery

• change the pressure gauges after every 25 recovery cycles

What type of leak detection device is used to pinpoint a leak?

• An electronic leak detector

• soap bubbles

• an ultrasonic leak detector

• a halide torch

Tags

NGSS.HS-PS4-5

An open compressor that has sat for several months is most likely

• not to operate due to seized bearings

• to leak from the shaft seal

• to need a hard start kit

• to need to have its oil changed

Two indications that a high pressure system has a leak are

• oil traces on flared fittings and high superheat

• low super heat and bubbles in the sight glass

• low super heat and low sub-cooling

• high head pressure and low super heat

EPA defines a Major Repair as

• replacing a compressor

• replacing a condenser

• replacing an evaporator

• all of the above

Under the exceptions to required evacuation levels, an appliance can be evacuated to 0 psig when

• the appliance is being thrown away

• the repair consists of a condenser replacement

• the required levels cannot be reached due to leaks

• all of the above

Refrigerant should be recovered as

• vapor first

• liquid first

• liquid from the low side first

• vapor from the low side first