VERSIONS WITH 500 QUESTIONS WITH DETAILED VERIFIED
ANSWERS / EXAM QUESTIONS WILL COME FROM HERE
(100% CORRECT ANSWERS/ A+ GRADED
True or false if we have two HFC refrigerants we can use the
same recovery cylinder because they are the same type of
refrigerant - ANSWER-False
True of false Nitrogen can be used to pressurize or blow debris
out of a system containing a half charge of refrigerant - ANSWER-
False
True or False only refrigerant blends without HFCs are accepted
under the snap program - ANSWER-False
True or False section 608 is a part of the clean air act - ANSWER-
True
,True or false the snap program could label refrigerant A as an
acceptable substitute for a freezer but an unacceptable substitute
for vending machines - ANSWER-True
True of false Type 1 appliances can have 3lbs of refrigerant -
ANSWER-True
Near azeotropic blend fractionation will contain - ANSWER-Two
saturation pressure valves that are close
A zeotropic blend will contain - ANSWER-Two saturation valves
that are far apart
Access fittings - ANSWER-Are used to gain access to type 1
appliances
Defrost heaters - ANSWER-Can be used to increase recovery
speed and temperature
,If the compressor is not working and we are performing passive
recovery we need to - ANSWER-Release trapped refrigerant from
the compressor oil
If the pressure of a system is found at 0psi can we recover
refrigerant from the system - ANSWER-No
True or false if pressure reading are far apart are there
contaminants in the refrigerant - ANSWER-True
Solderless piercing valves tend to - ANSWER-Leak over time and
should not be left on an appliance after service
System dependent recovery - ANSWER-Is passive uses the
compressor and can be used for appliances with under 15 lbs of
refrigerant
We can use a known refrigerants PT chart to see if there's non
condensables in the refrigerant - ANSWER-Only true if we can
measure both pressure and temperature
, When performing active recovery and the compressor is working
we must recover what levels - ANSWER-90% or 4 inch vacuum
What method of monitoring fill levels is most effective - ANSWER-
Gross cylinder weight
A recovery machine is required for appliances with _ lbs or more
of refrigerant - ANSWER-15 lbs
If the oil is contaminated what do we do - ANSWER-Flush the
system
Non-condensables would _ the pressure on the high side of an
active recovery device - ANSWER-Increase
Recovery devices are tested and certified by - ANSWER-AHRI UL
Vacuum pumps can be used to - ANSWER-Remove air and non
condensables