When adding oil to a refrigeration system,...

Question 1 / 270705eccef9dbacbc34ba4d460ba

Question 1 of 270705eccef9dbacbc34ba4d460ba

When adding oil to a refrigeration system, what precautions must be taken?

Question 1 of 27070

When adding oil to a refrigeration system, what precautions must be taken?

🔍 Key Concepts

• Safe charging procedures for refrigeration systems • How to prevent air and moisture from entering a closed refrigeration circuit • What conditions are required before opening a system to add oil

💭 Think About

• Which option focuses on keeping contaminants (like air) out of the refrigeration system while adding oil? • Which steps would actually increase risk or are unrelated to the oil-addition process? • Think about what you must ensure about the charging line and pump before you connect them to the system.

✅ Before You Answer

• Identify which choice deals directly with the charging equipment (pump/hose) condition. • Eliminate any options that would not be a normal or safe practice when adding oil. • Ask: which step is essential to avoid getting air into the system, which can cause poor operation and corrosion.

Question 1 of 27070

When adding oil to a refrigeration system, what precautions must be taken?

the compressor suction pressure should not be too high

all air is purged from the pump and charging hose with clean oil

the high pressure cutout switch is held open to prevent accidental starting

the compressor must be running