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How fast, generally, does a system dependent recovery
process take when the refrigeration systems compressor isn't
working? - ANSWER-If the systems compressor isn't working
it won't pump at all
System dependent devices may only be used on systems
containing———-
pounds of refrigerant or less -
ANSWER-15
After recovering refrigerant———-is used to flush debris out
of the system. -
ANSWER-
Nitrogen
The sale of CFC's and HCFC's are no longer permitted by law.
- ANSWER-
False
Which system is NOT covered under Type 1 certification?
- ANSWER-An
, automobile
AC
Active recovery process for small appliances users: -
ANSWER-An approved
recovery machine with its' own
compressor.
A storage cylinder of R-134a at a temperature of 68 degrees F
will be approximately how much pressure? You will need to
use a pressure temperature chart such as that found in your
textbook on page 46. – ANSWER-69 psig
A storage cylinder of R-502 at an ambient temperature of 32
degrees F will
exert approximately this much pressure -
ANSWER-65 psig
While most refrigerants are non-toxic, they can cause
suffocation because: -
ANSWER-They are heavier than air and displace
breathable oxygen.
When called to do a service call on a domestic type
refrigerator or freezer because the compressor is not
operational, then it may be necessary to install what prior to
recovery. - ANSWER-Access valves on the process stub or
high and low sides of the tubing.