HVAC: EPA 608 CERTIFICATION
EXAM 2025 | 100 QUESTIONS & ACCURATE ANSWERS
exchanger coil.
, Check the service valve positions, check the oil level of the recovery unit,
evacuate and recover any remaining refrigerant from the unit's receiver,
and evacuate an empty recovery cylinder before transferring refrigerant
to the cylinder.
Capable of recovering 80% of refrigerant without compressor operating or
achieve 4-inch vacuum under conditions of ARI 740; be capable of recovering
90% of refrigerant with compressor operating or achieve 4-inch vacuum under
conditions of ARI 740; and must be approved by EPA approved third-party
laboratory
Use nitrogen to flush debris out of system after recovering refrigerant. Filter-
drier should be installed to trap any debris that may cause damage to new
compressor
Don't know?
2 of 100
Term
When should a low pressure system be leaked checked according
to ASHRAE guideline 3-1996?
Give this one a try later!
If the pressure in system rises
from 1 mm Hg to a level If the system has been running
above 2.5 mm Hg during continuously for more than a week
vacuum testing
EXAM 2025 | 100 QUESTIONS & ACCURATE ANSWERS
exchanger coil.
, Check the service valve positions, check the oil level of the recovery unit,
evacuate and recover any remaining refrigerant from the unit's receiver,
and evacuate an empty recovery cylinder before transferring refrigerant
to the cylinder.
Capable of recovering 80% of refrigerant without compressor operating or
achieve 4-inch vacuum under conditions of ARI 740; be capable of recovering
90% of refrigerant with compressor operating or achieve 4-inch vacuum under
conditions of ARI 740; and must be approved by EPA approved third-party
laboratory
Use nitrogen to flush debris out of system after recovering refrigerant. Filter-
drier should be installed to trap any debris that may cause damage to new
compressor
Don't know?
2 of 100
Term
When should a low pressure system be leaked checked according
to ASHRAE guideline 3-1996?
Give this one a try later!
If the pressure in system rises
from 1 mm Hg to a level If the system has been running
above 2.5 mm Hg during continuously for more than a week
vacuum testing
