a vacum pump should be connected - Answer- as far away from the pump as possible
a high capacity vacuum pump and short, large diameter hoses will - Answer- dramatically reduce emissions, pressure drop, and evacuation/
...
a vacum pump should be connected - Answer- as far away from the pump as possible
a high capacity vacuum pump and short, large diameter hoses will - Answer- dramatically reduce emissions, pressure drop, and evacuation/dehydration time
ozone contains three - Answer- oxygen atoms
one chlorine atom can destroy - Answer- 100,000 ozone molecules
CFC's do not dissolve in water and do not breakdown into other compounds that dissolve in water - Answer- CFC's cannot be washed out of the lower atmosphere
ODP - Answer- ozone depletion potential
azeotrope - Answer- where the mixture behaves like a single chemical (new refrigerant)
HFC's will not damage the ozone in the stratosphere - Answer- ...
in 1992 the united states ordered the stoppage of all CFC production and importation after - Answer- December 31, 1995
according to the clean air act, no person installing, maintaining, repairing, or disposing of any appliance may knowingly vent or otherwise release into the environment and class 1 or class 2 substance after - Answer- July 1, 1992
class 1 - Answer- CFC
class 2 - Answer- HCFC
it became illegal to vent substitutes for CFC and HCFC refridgerants on - Answer- November 15, 1995
any device which contains and uses a class 1 or class 2 substance as a refridgerant and is used for household or commercial purpose. - Answer- appliance
self contained recovery equipment type - Answer- Active
system dependent recovery equipment type - Answer- Passive
only section 609 certified technicians may buy CFC-12 in containers smaller than 20 pounds - Answer- ...
who must ensure that all refridgerant has been recovered prior to disposal of any appliance - Answer- The final person in the disposal chain (scrap metal recycler, landfill owner, ect.)
the removal of refridgerant in any condition - Answer- Recovery
to clean refridgerant by oil seperation, non-condensable removal and single or multiple passes through replaceable filter-driers to reduce moisture, acidity and particulate matter - Answer- Recycling
a complicated distillation process that returns recovered refridgerant to the purity of factory fresh refridgerant. - Answer- Reclaiming (ARI Standard 700)
under no circumstance should different refridgerants be - Answer- mixed together
Currently there is NOT a drop-in for CFC-12 - Answer- ...
oils that are hygroscopic - Answer- Ester based (polyolesters)
the alkylbenzene, use for some ternary blends - Answer- ...
as a general rule, different lubricants should never be mixed - Answer- ...
oxygen and oil when mixed can form an - Answer- extremely explosive mixture
sight glasses can be cleaned with - Answer- alcohol spray
before discarding a container the internal cylinder pressure should be reduced to at least - Answer- 0 psig
recovery cylinders must be approved by - Answer- Department of Transportation (DOT)
Refridgerant cylinders should never be filled above - Answer- 80% capacity
refridgerant cylinders should always be stored - Answer- vertical or upright position with their valves at the top
Service oses must be fitted with some type of low loss fitting - Answer- to prevent the loss of refridgerant
for small appliances, this service port typically is a straight piece of tubing that is entered using a - Answer- Piercing access valve
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