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Hi Howard,thanks for taking my question:When charging a system that has a sight glass on the liquid line,should refrigerant be added until the sight glass shows no bubbles?Does this work on all systems?No speceial applications.Thanks Howard. Gregg
It's better than nothing Gregg. But it can show bubbles & be over/under charged. The type of expansion thing you have at the evaporator coil can make a difference too. An expansion valve or capillary tubes will.But there can be a tolerance in the freon amount you will never notice.
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Answers by Expert:
Howard Livingston
Expertise
Can answer questions on electrical control circuits, power supply,airflow & distribution, electrical components,refrigerant problems,gas, electric & propane furnaces.No boiler or refrigerator or oil fired furnaces experience.Just HVAC questions please.
Experience
35 years experience in residential & light commercial repair & installation.
Organizations
None
Publications
None
Education/Credentials
Mechanical Engineering degree.
Awards and Honors
None
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