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First off, you need to know what you're doing, and be certified before you hurt yourself. Why does it have to be charged? Is there a leak? You need leak testing equipment, and then a way to evacuate the system, and charge the system. You will have to be certified to buy the refrigerant and today's tool cash that most technicians carry is well into the several thousands of dollars. Not something the guy off the street can do.
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∙ 12y ago
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How do you determine if charge is correct using R22?
the things that must be considered when charging the system with R22; R404;R134;R507;R406
When pressurizing a refrigeration system with nitrogen what rule should you always follow?
charge through a pressure regulator
When pressurizing a refrigeration system with nitrogen what rule should always follow?
charge through a pressure regulator
Pressure in a refrigeration system is changed where?
pressure in a refrigeration system is changed in the
IS R134a freon compatible with R404?
No. NEVER mix refrigerants or use any refrigerant other than what the system is intended to use.
Is R404 denser than air?
Refrigerant
Can r404-a freon be substitted for r22 freon?
NO
Why COP is used for evaluation of compression refrigeration system but not absorption refrigeration system?
cause its a gas
Where the refrigeration changes in a refrigeration system?
at the metering device before the evaporator
How do you determine when enough vapor has entered the refrigeration system before you charge refrigerant liquid?
When the refrigerant saturation temperature increases to 36 degrees F.
What does the evaporator do in the refrigeration system?
An evaporator in a refrigeration system works by passing warm air over it's coils.
What do you check before you charge the refrigeration unit?
that theres a vacuum on it
