HVAC 2020 EPA 608 CORE Type 1,2,3
A belt driven non airtight compressor is maximum probable to leak if the compressor has not
been used for several months. - ANS-Rotating shaft seal
a hydrostatic tube test kit will? - ANS-If a tube leaks
A passive machine-dependent restoration system for small appliances: - ANS-captures
refrigerant in a non-pressurized field.
A normal putting for the high pressure cut out manipulate on a restoration unit used for
evacuating the refrigerant from a low stress chiller is what? - ANS-10 PSIG
A very big refrigerant leak can reason suffocation due to the fact refrigerants: - ANS-Are heavier
than air and displace oxygen
After a leak restore of a grocery store rack the use of 3000 pounds of R-22 and a a hit initial
verification take a look at while need to they comply with up leak verification exams be
performed? - ANS-Within 10 days
after refrigerant liquid has been recovered from the equipment any final vapor is -
ANS-Removed by the recovery device
After gadget servicing in recharging why is refrigerant vapor reintroduced to the chiller earlier
than refrigerant liquid? - ANS-Liquid rate right into a deep vacuum will evaporate and might
decrease the temperature freezing water within the warmth exchanger to package deal
All home equipment should be prepared with a provider aperture or other device that's used
when including or doing away with refrigerant from the appliance. What is generally used on
small appliances? - ANS-A directly piece of tubing this is entered the use of a piercing get entry
to valve.
An preliminary leak verification check failed after repairing a leak in a rack refrigeration device
for grocery store the use of an HCFC refrigerant what would be the next step - ANS-Conduct
extra upkeep in the 30 day repair window or mothball the appliance
about how a lot refrigerant vapor is left in an average 350 ton R-123 chiller at zero psig once all
of the R123 liquid has been eliminated? - ANS-100 lbs
ASHRAE trendy 15-2013 requires the usage of room sensors and alarms to stumble on what? -
ANS-A1 refrigerants
, ASHRAE standard 15-2013 calls for using room sensors in alarms to discover what? -
ANS-Refrigerant leaks
Before beginning a refrigerant restoration process, it's miles usually essential to: - ANS-Know
the type of refrigerant this is within the gadget
earlier than making a main restore technicians ought to evacuate an equipment or issue retain
extra than 2 hundred lbs of R-410A to which of the subsequent levels? - ANS-10 in HG vacuum
fee low pressure refrigeration machines can be most correctly leak checked by means of? -
ANS-Adding heat with circulated hot water or heating blankets
EPA segment 608 policies require capture of 80% of the HCFC's and HFC's from a small
appliance sealed system with a non working compressor if techs are the usage of: - ANS-self
contained (active) system
For an equipment that uses a CFC, HCFC, or HFC refrigerant, which of the following violates
the prohibition of venting? - ANS-Refrigerants emitted while cutting a line with out properly
evacuation an appliance.
For what refrigerant is an gadget room refrigerant detector not required underneath ASHRAE
fashionable 15 furnished the mechanical ventilation system inside the equipment is
administered constantly? - ANS-R-717
For which of the following refrigeration structures/home equipment wouldn't it be permissible to
apply a passive recovery tool for refrigerant recuperation of CFC's, HCFC's, and HFC's. -
ANS-A home refrigerator
HFC refrigerants include which of the subsequent? - ANS-Hydrogen, Fluorine, Carbon
how can you accelerate the elimination of the refrigerant charge from a gadget? - ANS-cooling
the recovery cylinder to lower is stress
how long become the technician evacuating refrigerant from appliances with a complete charge
of extra than 5lbs and less than 50lbs which are being disposed of hold data of the occasion? -
ANS-5 years
How many get right of entry to valves are had to recover the refrigerant on a sealed machine
with an working compressor that has a very confined capillary tube? - ANS-Two valves, one on
the inlet to the compressor and one at the opening of the condenser coil.
How have to disposable cylinders of refrigerants be discarded? - ANS-Recover all final
refrigerant, render the cylinders vain, and recycle the metallic.
A belt driven non airtight compressor is maximum probable to leak if the compressor has not
been used for several months. - ANS-Rotating shaft seal
a hydrostatic tube test kit will? - ANS-If a tube leaks
A passive machine-dependent restoration system for small appliances: - ANS-captures
refrigerant in a non-pressurized field.
A normal putting for the high pressure cut out manipulate on a restoration unit used for
evacuating the refrigerant from a low stress chiller is what? - ANS-10 PSIG
A very big refrigerant leak can reason suffocation due to the fact refrigerants: - ANS-Are heavier
than air and displace oxygen
After a leak restore of a grocery store rack the use of 3000 pounds of R-22 and a a hit initial
verification take a look at while need to they comply with up leak verification exams be
performed? - ANS-Within 10 days
after refrigerant liquid has been recovered from the equipment any final vapor is -
ANS-Removed by the recovery device
After gadget servicing in recharging why is refrigerant vapor reintroduced to the chiller earlier
than refrigerant liquid? - ANS-Liquid rate right into a deep vacuum will evaporate and might
decrease the temperature freezing water within the warmth exchanger to package deal
All home equipment should be prepared with a provider aperture or other device that's used
when including or doing away with refrigerant from the appliance. What is generally used on
small appliances? - ANS-A directly piece of tubing this is entered the use of a piercing get entry
to valve.
An preliminary leak verification check failed after repairing a leak in a rack refrigeration device
for grocery store the use of an HCFC refrigerant what would be the next step - ANS-Conduct
extra upkeep in the 30 day repair window or mothball the appliance
about how a lot refrigerant vapor is left in an average 350 ton R-123 chiller at zero psig once all
of the R123 liquid has been eliminated? - ANS-100 lbs
ASHRAE trendy 15-2013 requires the usage of room sensors and alarms to stumble on what? -
ANS-A1 refrigerants
, ASHRAE standard 15-2013 calls for using room sensors in alarms to discover what? -
ANS-Refrigerant leaks
Before beginning a refrigerant restoration process, it's miles usually essential to: - ANS-Know
the type of refrigerant this is within the gadget
earlier than making a main restore technicians ought to evacuate an equipment or issue retain
extra than 2 hundred lbs of R-410A to which of the subsequent levels? - ANS-10 in HG vacuum
fee low pressure refrigeration machines can be most correctly leak checked by means of? -
ANS-Adding heat with circulated hot water or heating blankets
EPA segment 608 policies require capture of 80% of the HCFC's and HFC's from a small
appliance sealed system with a non working compressor if techs are the usage of: - ANS-self
contained (active) system
For an equipment that uses a CFC, HCFC, or HFC refrigerant, which of the following violates
the prohibition of venting? - ANS-Refrigerants emitted while cutting a line with out properly
evacuation an appliance.
For what refrigerant is an gadget room refrigerant detector not required underneath ASHRAE
fashionable 15 furnished the mechanical ventilation system inside the equipment is
administered constantly? - ANS-R-717
For which of the following refrigeration structures/home equipment wouldn't it be permissible to
apply a passive recovery tool for refrigerant recuperation of CFC's, HCFC's, and HFC's. -
ANS-A home refrigerator
HFC refrigerants include which of the subsequent? - ANS-Hydrogen, Fluorine, Carbon
how can you accelerate the elimination of the refrigerant charge from a gadget? - ANS-cooling
the recovery cylinder to lower is stress
how long become the technician evacuating refrigerant from appliances with a complete charge
of extra than 5lbs and less than 50lbs which are being disposed of hold data of the occasion? -
ANS-5 years
How many get right of entry to valves are had to recover the refrigerant on a sealed machine
with an working compressor that has a very confined capillary tube? - ANS-Two valves, one on
the inlet to the compressor and one at the opening of the condenser coil.
How have to disposable cylinders of refrigerants be discarded? - ANS-Recover all final
refrigerant, render the cylinders vain, and recycle the metallic.
